Mercurial > dive4elements > framework
annotate artifact-database/src/main/java/de/intevation/artifactdatabase/Backend.java @ 309:86dd32b45d87
Use real db connection pooling for artifact database.
artifacts/trunk@2429 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author | Sascha L. Teichmann <sascha.teichmann@intevation.de> |
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date | Sun, 31 Jul 2011 18:43:54 +0000 |
parents | a077bb098eb4 |
children | 63122b9dee1d |
rev | line source |
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1 /* |
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2 * Copyright (c) 2010, 2011 by Intevation GmbH |
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3 * |
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4 * This program is free software under the LGPL (>=v2.1) |
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5 * Read the file LGPL.txt coming with the software for details |
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6 * or visit http://www.gnu.org/licenses/ if it does not exist. |
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7 */ |
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8 package de.intevation.artifactdatabase; |
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9 |
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10 import de.intevation.artifacts.Artifact; |
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11 import de.intevation.artifacts.ArtifactCollection; |
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12 import de.intevation.artifacts.ArtifactCollectionFactory; |
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13 import de.intevation.artifacts.ArtifactDatabase.ArtifactLoadedCallback; |
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14 import de.intevation.artifacts.ArtifactFactory; |
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15 import de.intevation.artifacts.ArtifactSerializer; |
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16 import de.intevation.artifacts.CollectionItem; |
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17 import de.intevation.artifacts.User; |
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18 import de.intevation.artifacts.UserFactory; |
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19 |
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20 import de.intevation.artifacts.common.utils.StringUtils; |
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21 import de.intevation.artifacts.common.utils.XMLUtils; |
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22 import de.intevation.artifacts.common.utils.LRUCache; |
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23 |
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24 import de.intevation.artifactdatabase.db.SQLExecutor; |
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25 import de.intevation.artifactdatabase.db.SQL; |
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26 |
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27 import java.sql.SQLException; |
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28 import java.sql.Timestamp; |
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29 import java.sql.Types; |
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30 |
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31 import java.util.ArrayList; |
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32 import java.util.Date; |
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33 import java.util.HashMap; |
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34 |
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35 import org.apache.log4j.Logger; |
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36 |
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37 import org.w3c.dom.Document; |
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38 |
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39 /** |
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40 * The backend implements the low level layer used to store artifacts |
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41 * in a SQL database. |
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42 * |
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43 * @author <a href="mailto:sascha.teichmann@intevation.de">Sascha L. Teichmann</a> |
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44 */ |
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45 public class Backend |
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46 implements DatabaseCleaner.ArtifactReviver |
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47 { |
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48 private static Logger logger = Logger.getLogger(Backend.class); |
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49 |
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50 /** |
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51 * The SQL statement to create new artifact id inside the database. |
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52 */ |
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53 public String SQL_NEXT_ID; |
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54 |
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55 /** |
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56 * The SQL statement to insert an artifact into the database. |
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57 */ |
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58 public String SQL_INSERT; |
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59 |
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60 /** |
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61 * The SQL statement to update some columns of an existing |
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62 * artifact in the database. |
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63 */ |
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64 public String SQL_UPDATE; |
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65 |
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66 /** |
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67 * The SQL statement to touch the access time of an |
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68 * artifact inside the database. |
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69 */ |
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70 public String SQL_TOUCH; |
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71 |
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72 /** |
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73 * The SQL statement to load an artifact by a given |
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74 * identifier from the database. |
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75 */ |
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76 public String SQL_LOAD_BY_GID; |
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77 |
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78 /** |
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79 * The SQL statement to get the database id of an artifact |
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80 * identified by the identifier. |
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81 */ |
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82 public String SQL_GET_ID; |
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83 |
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84 /** |
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85 * The SQL statement to replace the content of an |
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86 * existing artifact inside the database. |
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87 */ |
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88 public String SQL_REPLACE; |
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89 |
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90 // USER SQL |
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91 |
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92 public String SQL_USERS_NEXT_ID; |
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93 public String SQL_USERS_INSERT; |
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94 public String SQL_USERS_SELECT_ID_BY_GID; |
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95 public String SQL_USERS_SELECT_GID; |
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96 public String SQL_USERS_DELETE_ID; |
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97 public String SQL_USERS_DELETE_COLLECTIONS; |
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98 public String SQL_USERS_SELECT_ALL; |
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99 public String SQL_USERS_COLLECTIONS; |
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100 public String SQL_USERS_COLLECTION_IDS; |
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101 public String SQL_USERS_DELETE_ALL_COLLECTIONS; |
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102 public String SQL_ARTIFACTS_IN_ONLY_COLLECTION_ONLY; |
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103 public String SQL_OUTDATE_ARTIFACTS_COLLECTION; |
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104 public String SQL_UPDATE_COLLECTION_TTL; |
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105 public String SQL_UPDATE_COLLECTION_NAME; |
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106 public String SQL_OUTDATE_ARTIFACTS_USER; |
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107 public String SQL_DELETE_USER_COLLECTION_ITEMS; |
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108 public String SQL_COLLECTIONS_NEXT_ID; |
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109 public String SQL_COLLECTIONS_INSERT; |
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110 public String SQL_COLLECTIONS_SELECT_USER; |
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111 public String SQL_COLLECTIONS_SELECT_ALL; |
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112 public String SQL_COLLECTIONS_SELECT_GID; |
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113 public String SQL_COLLECTIONS_CREATION_TIME; |
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114 public String SQL_COLLECTIONS_ID_BY_GID; |
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115 public String SQL_DELETE_COLLECTION_ITEMS; |
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116 public String SQL_DELETE_COLLECTION; |
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117 public String SQL_COLLECTION_CHECK_ARTIFACT; |
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118 public String SQL_COLLECTION_ITEMS_ID_NEXTVAL; |
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119 public String SQL_COLLECTION_ITEMS_INSERT; |
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120 public String SQL_COLLECTION_GET_ATTRIBUTE; |
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121 public String SQL_COLLECTION_SET_ATTRIBUTE; |
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122 public String SQL_COLLECTION_ITEM_GET_ATTRIBUTE; |
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123 public String SQL_COLLECTION_ITEM_SET_ATTRIBUTE; |
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124 public String SQL_COLLECTIONS_TOUCH_BY_GID; |
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125 public String SQL_COLLECTION_ITEM_ID_CID_AID; |
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126 public String SQL_COLLECTION_ITEM_OUTDATE_ARTIFACT; |
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127 public String SQL_COLLECTION_ITEM_DELETE; |
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128 public String SQL_COLLECTIONS_TOUCH_BY_ID; |
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129 public String SQL_COLLECTION_ITEMS_LIST_GID; |
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130 public String SQL_ALL_ARTIFACTS; |
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131 |
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132 /** The singleton.*/ |
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133 protected static Backend instance; |
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134 |
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135 protected SQLExecutor sqlExecutor; |
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136 |
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137 protected DBConfig config; |
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138 |
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139 /** |
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140 * The database cleaner. Reference is stored here because |
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141 * the cleaner is woken up if the backend finds an outdated |
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142 * artifact. This artifact should be removed as soon as |
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143 * possible. |
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144 */ |
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145 protected DatabaseCleaner cleaner; |
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146 |
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147 /** |
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148 * To revive an artifact from the bytes coming from the database |
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149 * we need the artifact factory which references the artifact |
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150 * serializer which is able to do the reviving job. |
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151 */ |
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152 protected FactoryLookup factoryLookup; |
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153 |
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154 /** |
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155 * Little helper interface to decouple the ArtifactDatabase |
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156 * from the Backend. A ArtifactDatabase should depend on a |
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157 * Backend but a Backend not from an ArtifactDatabase. |
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158 */ |
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159 public interface FactoryLookup { |
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160 |
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161 /** |
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162 * Returns an ArtifactFactory which is bound to a given name. |
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163 * @param factoryName The name of the artifact factory. |
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164 * @return The ArtifactFactory bound to the factory name or |
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165 * null if not matching factory is found. |
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166 */ |
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167 ArtifactFactory getArtifactFactory(String factoryName); |
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168 |
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169 } // interface FactoryLookup |
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170 |
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171 /** |
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172 * Inner class that brigdes between the persisten form of the |
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173 * artifact and the living one inside the artifact database. |
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174 * After the describe(), feed(), advance() and out() operations |
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175 * of the artifact it must be possible to write to modified artifact |
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176 * back into the database. |
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177 */ |
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178 public final class PersistentArtifact |
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179 { |
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180 private int id; |
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181 private Artifact artifact; |
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182 private ArtifactSerializer serializer; |
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183 private Long ttl; |
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184 |
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185 /** |
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186 * Cronstructor to create a persistent artifact. |
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187 * @param artifact The living artifact. |
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188 * @param serializer The serializer to store the artifact |
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189 * after the operations. |
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190 * @param ttl The time to life of the artifact. |
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191 * @param id The database id of the artifact. |
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192 */ |
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193 public PersistentArtifact( |
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194 Artifact artifact, |
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195 ArtifactSerializer serializer, |
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196 Long ttl, |
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197 int id |
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198 ) { |
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199 this.id = id; |
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200 this.artifact = artifact; |
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201 this.serializer = serializer; |
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202 this.ttl = ttl; |
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203 } |
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204 |
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205 public int getId() { |
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206 return id; |
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207 } |
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208 |
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209 /** |
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210 * Returns the wrapped living artifact. |
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211 * @return the living artifact. |
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212 */ |
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213 public Artifact getArtifact() { |
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214 return artifact; |
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215 } |
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216 |
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217 /** |
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218 * Returns the serialized which is able to write a |
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219 * modified artifact back into the database. |
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220 * @return The serializer. |
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221 */ |
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222 public ArtifactSerializer getSerializer() { |
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223 return serializer; |
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224 } |
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225 |
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226 /** |
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227 * The time to life of the artifact. |
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228 * @return The time to live. |
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229 */ |
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230 public Long getTTL() { |
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231 return ttl; |
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232 } |
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233 |
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234 /** |
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235 * Stores the living artifact back into the database. |
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236 */ |
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237 public void store() { |
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238 if (logger.isDebugEnabled()) { |
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239 logger.debug("storing artifact id = " + getId()); |
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240 } |
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241 Backend.this.store(this); |
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242 } |
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243 |
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244 /** |
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245 * Only touches the access time of the artifact. |
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246 */ |
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247 public void touch() { |
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248 if (logger.isDebugEnabled()) { |
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249 logger.debug("touching artifact id = " + getId()); |
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250 } |
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251 Backend.this.touch(this); |
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252 } |
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253 } // class ArtifactWithId |
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254 |
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255 /** |
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256 * Default constructor |
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257 */ |
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258 public Backend() { |
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259 } |
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260 |
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261 public Backend(DBConfig config) { |
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262 this.config = config; |
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263 sqlExecutor = new SQLExecutor(config.getDBConnection()); |
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264 setupSQL(config.getSQL()); |
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265 } |
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266 |
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267 /** |
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268 * Constructor to create a backend with a link to the database cleaner. |
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269 * @param cleaner The clean which periodically removes outdated |
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270 * artifacts from the database. |
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271 */ |
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272 public Backend(DBConfig config, DatabaseCleaner cleaner) { |
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273 this(config); |
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274 this.cleaner = cleaner; |
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275 } |
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276 |
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277 public DBConfig getConfig() { |
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278 return config; |
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279 } |
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280 |
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281 /** |
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282 * Returns the singleton of this Backend. |
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283 * |
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284 * @return the backend. |
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285 */ |
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286 public static synchronized Backend getInstance() { |
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287 if (instance == null) { |
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288 instance = new Backend(DBConfig.getInstance()); |
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289 } |
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290 |
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291 return instance; |
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292 } |
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293 |
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294 protected void setupSQL(SQL sql) { |
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295 SQL_NEXT_ID = sql.get("artifacts.id.nextval"); |
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296 SQL_INSERT = sql.get("artifacts.insert"); |
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297 SQL_UPDATE = sql.get("artifacts.update"); |
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298 SQL_TOUCH = sql.get("artifacts.touch"); |
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299 SQL_LOAD_BY_GID = sql.get("artifacts.select.gid"); |
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300 SQL_GET_ID = sql.get("artifacts.get.id"); |
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301 SQL_REPLACE = sql.get("artifacts.replace"); |
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302 SQL_USERS_NEXT_ID = sql.get("users.id.nextval"); |
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303 SQL_USERS_INSERT = sql.get("users.insert"); |
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304 SQL_USERS_SELECT_ID_BY_GID = sql.get("users.select.id.by.gid"); |
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305 SQL_USERS_SELECT_GID = sql.get("users.select.gid"); |
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306 SQL_USERS_DELETE_ID = sql.get("users.delete.id"); |
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307 SQL_USERS_DELETE_COLLECTIONS = sql.get("users.delete.collections"); |
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308 SQL_USERS_SELECT_ALL = sql.get("users.select.all"); |
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309 SQL_USERS_COLLECTIONS = sql.get("users.collections"); |
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310 SQL_USERS_COLLECTION_IDS = sql.get("users.collection.ids"); |
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311 SQL_USERS_DELETE_ALL_COLLECTIONS = |
307
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312 sql.get("users.delete.collections"); |
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313 SQL_ARTIFACTS_IN_ONLY_COLLECTION_ONLY = |
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314 sql.get("artifacts.in.one.collection.only"); |
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315 SQL_OUTDATE_ARTIFACTS_COLLECTION = |
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316 sql.get("outdate.artifacts.collection"); |
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317 SQL_UPDATE_COLLECTION_TTL = sql.get("collections.update.ttl"); |
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318 SQL_UPDATE_COLLECTION_NAME = sql.get("collections.update.name"); |
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319 SQL_OUTDATE_ARTIFACTS_USER = sql.get("outdate.artifacts.user"); |
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320 SQL_DELETE_USER_COLLECTION_ITEMS = |
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321 sql.get("delete.user.collection.items"); |
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322 SQL_COLLECTIONS_NEXT_ID = sql.get("collections.id.nextval"); |
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323 SQL_COLLECTIONS_INSERT = sql.get("collections.insert"); |
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324 SQL_COLLECTIONS_SELECT_USER = sql.get("collections.select.user"); |
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325 SQL_COLLECTIONS_SELECT_ALL = sql.get("collections.select.all"); |
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326 SQL_COLLECTIONS_SELECT_GID = sql.get("collections.select.by.gid"); |
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327 SQL_COLLECTIONS_CREATION_TIME = sql.get("collection.creation.time"); |
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328 SQL_COLLECTIONS_ID_BY_GID = sql.get("collections.id.by.gid"); |
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329 SQL_DELETE_COLLECTION_ITEMS = sql.get("delete.collection.items"); |
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330 SQL_DELETE_COLLECTION = sql.get("delete.collection"); |
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331 SQL_COLLECTION_CHECK_ARTIFACT = sql.get("collection.check.artifact"); |
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332 SQL_COLLECTION_ITEMS_ID_NEXTVAL = |
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333 sql.get("collection.items.id.nextval"); |
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334 SQL_COLLECTION_ITEMS_INSERT = sql.get("collection.items.insert"); |
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335 SQL_COLLECTION_GET_ATTRIBUTE = sql.get("collection.get.attribute"); |
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336 SQL_COLLECTION_SET_ATTRIBUTE = sql.get("collection.set.attribute"); |
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337 SQL_COLLECTION_ITEM_GET_ATTRIBUTE = |
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338 sql.get("collection.item.get.attribute"); |
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339 SQL_COLLECTION_ITEM_SET_ATTRIBUTE = |
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340 sql.get("collection.item.set.attribute"); |
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341 SQL_COLLECTIONS_TOUCH_BY_GID = sql.get("collections.touch.by.gid"); |
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342 SQL_COLLECTION_ITEM_ID_CID_AID = sql.get("collection.item.id.cid.aid"); |
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343 SQL_COLLECTION_ITEM_OUTDATE_ARTIFACT = |
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344 sql.get("collection.item.outdate.artifact"); |
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345 SQL_COLLECTION_ITEM_DELETE = sql.get("collection.item.delete"); |
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346 SQL_COLLECTIONS_TOUCH_BY_ID = sql.get("collections.touch.by.id"); |
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347 SQL_COLLECTION_ITEMS_LIST_GID = sql.get("collection.items.list.gid"); |
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348 SQL_ALL_ARTIFACTS = sql.get("all.artifacts"); |
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349 } |
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350 |
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351 /** |
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352 * Sets the factory lookup mechanism to decouple ArtifactDatabase |
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353 * and Backend. |
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354 * @param factoryLookup |
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355 */ |
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356 public void setFactoryLookup(FactoryLookup factoryLookup) { |
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357 this.factoryLookup = factoryLookup; |
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358 } |
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359 |
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360 /** |
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361 * Sets the database cleaner explicitly. |
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362 * @param cleaner The database cleaner |
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363 */ |
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364 public void setCleaner(DatabaseCleaner cleaner) { |
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365 this.cleaner = cleaner; |
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366 } |
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367 |
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368 /** |
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369 * Returns a new unique identifier to external identify |
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370 * the artifact across the system. This implementation |
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371 * uses random UUIDs v4 to achieve this target. |
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372 * @return the new identifier |
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373 */ |
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374 public String newIdentifier() { |
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375 // TODO: check database for collisions. |
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376 return StringUtils.newUUID(); |
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377 } |
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378 |
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379 public boolean isValidIdentifier(String identifier) { |
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380 return StringUtils.checkUUID(identifier); |
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381 } |
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382 |
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383 /** |
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384 * Stores a new artifact into the database. |
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385 * @param artifact The artifact to be stored |
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386 * @param factory The factory which build the artifact |
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387 * @param ttl The initial time to life of the artifact. |
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388 * @return A persistent wrapper around the living |
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389 * artifact to be able to write modification later. |
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390 * @throws Exception Thrown if something went wrong with the |
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391 * storage process. |
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392 */ |
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393 public PersistentArtifact storeInitially( |
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394 Artifact artifact, |
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395 ArtifactFactory factory, |
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396 Long ttl |
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397 ) |
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398 throws Exception |
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399 { |
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400 return new PersistentArtifact( |
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401 artifact, |
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402 factory.getSerializer(), |
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403 ttl, |
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404 insertDatabase(artifact, factory, ttl)); |
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405 } |
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406 |
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407 /** |
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408 * Stores an artifact into database if it does not exist there. |
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409 * If it exists there it is only updated. |
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410 * @param artifact The artifact to store/update. |
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411 * @param factory The factory which created the artifact. |
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412 * @param ttl The initial time to live of the artifact. |
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413 * @return A persistent version of the artifact to be able |
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414 * to store a modification later. |
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415 * @throws Exception Thrown if something went wrong during |
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416 * storing/updating. |
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417 */ |
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418 public PersistentArtifact storeOrReplace( |
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419 Artifact artifact, |
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420 ArtifactFactory factory, |
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421 Long ttl |
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422 ) |
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423 throws Exception |
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424 { |
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425 return new PersistentArtifact( |
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426 artifact, |
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427 factory.getSerializer(), |
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428 ttl, |
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429 storeOrReplaceDatabase(artifact, factory, ttl)); |
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430 } |
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431 |
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432 /** |
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433 * Implementors of this interface are able to process the raw |
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434 * artifact data from the database for loading. |
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435 */ |
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436 public interface ArtifactLoader { |
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437 |
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438 /** |
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439 * Creates a custom object from the raw artifact database data. |
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440 * @param factory The factory that created this artifact. |
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441 * @param ttl The current time to life of the artifact. |
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442 * @param bytes The raw artifact bytes from the database. |
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443 * @param id The database id of the artifact. |
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444 * @return The custom object created by the implementation. |
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445 */ |
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446 Object load(ArtifactFactory factory, Long ttl, byte [] bytes, int id); |
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447 |
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448 } // interface ArtifactLoader |
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449 |
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450 /** |
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451 * Fetches an artifact from the database identified by the |
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452 * given identifier. |
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453 * @param identifer The identifier of the artifact. |
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454 * @return A persistent wrapper around the found artifact |
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455 * to be able to write back a modifaction later or null |
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456 * if no artifact is found for this identifier. |
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457 */ |
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458 public PersistentArtifact getArtifact(String identifer) { |
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459 |
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460 return (PersistentArtifact)loadArtifact( |
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461 identifer, |
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462 new ArtifactLoader() { |
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463 |
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464 public Object load( |
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465 ArtifactFactory factory, |
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466 Long ttl, |
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467 byte [] bytes, |
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468 int id |
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469 ) { |
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470 ArtifactSerializer serializer = factory.getSerializer(); |
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471 |
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472 Artifact artifact = serializer.fromBytes(bytes); |
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473 |
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474 return artifact == null |
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475 ? null |
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476 : new PersistentArtifact(artifact, serializer, ttl, id); |
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477 } |
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478 }); |
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479 } |
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480 |
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481 /** |
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482 * More general loading mechanism for artifacts. The concrete |
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483 * load processing is delegated to the given loader. |
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484 * @param identifer The identifier of the artifact. |
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485 * @param loader The loader which processes the raw database data. |
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486 * @return The object created by the loader. |
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487 */ |
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488 public Object loadArtifact( |
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489 final String identifer, |
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490 final ArtifactLoader loader |
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491 ) { |
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492 if (!isValidIdentifier(identifer)) { |
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493 return null; |
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494 } |
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495 |
303
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496 if (factoryLookup == null) { |
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497 logger.error("factory lookup == null"); |
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498 return false; |
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499 } |
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500 |
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501 final Object [] loaded = new Object[1]; |
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502 |
305
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503 SQLExecutor.Instance exec = sqlExecutor.new Instance() { |
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504 public boolean doIt() throws SQLException { |
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505 prepareStatement(SQL_LOAD_BY_GID); |
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506 stmnt.setString(1, identifer); |
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507 |
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508 result = stmnt.executeQuery(); |
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509 |
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510 if (!result.next()) { |
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511 return false; |
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512 } |
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513 |
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514 int id = result.getInt(1); |
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515 long ttlX = result.getLong(2); |
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516 Long ttl = result.wasNull() ? null : ttlX; |
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517 |
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518 String factoryName = result.getString(3); |
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519 |
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520 ArtifactFactory factory = factoryLookup |
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521 .getArtifactFactory(factoryName); |
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522 |
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523 if (factory == null) { |
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524 logger.error("factory '" + factoryName + "' not found"); |
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525 return false; |
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526 } |
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527 |
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528 byte [] bytes = result.getBytes(4); |
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529 |
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530 loaded[0] = loader.load(factory, ttl, bytes, id); |
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531 return true; |
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532 } |
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533 }; |
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534 |
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535 return exec.runRead() ? loaded[0] : null; |
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536 } |
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537 |
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538 /** |
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539 * Called if the load mechanism found an outdated artifact. |
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540 * It wakes up the database cleaner. |
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541 * @param id The id of the outdated artifact. |
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542 */ |
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543 protected void artifactOutdated(int id) { |
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544 if (logger.isDebugEnabled()) { |
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545 logger.info("artifactOutdated: id = " + id); |
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546 } |
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547 if (cleaner != null) { |
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548 cleaner.wakeup(); |
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549 } |
15
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550 } |
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551 |
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552 public Artifact reviveArtifact(String factoryName, byte [] bytes) { |
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553 if (factoryLookup == null) { |
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554 logger.error("reviveArtifact: factory lookup == null"); |
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555 return null; |
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556 } |
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557 ArtifactFactory factory = factoryLookup |
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558 .getArtifactFactory(factoryName); |
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559 |
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560 if (factory == null) { |
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561 logger.error( |
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562 "reviveArtifact: no factory '" + factoryName + "' found"); |
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563 return null; |
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564 } |
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565 |
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566 ArtifactSerializer serializer = factory.getSerializer(); |
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567 |
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568 return serializer.fromBytes(bytes); |
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569 } |
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570 |
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571 /** |
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572 * Internal method to store/replace an artifact inside the database. |
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573 * If an artifact with the given identifier does not exists it is |
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574 * created else only the content data is updated. |
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575 * @param artifact The artifact to be store/update inside the database. |
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576 * @param factory The factory that created the artifact. |
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577 * @param ttl The initial time to life of the artifact. |
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578 * @return The database id of the stored/updated artifact. |
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579 */ |
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580 protected int storeOrReplaceDatabase( |
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581 final Artifact artifact, |
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582 final ArtifactFactory factory, |
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583 final Long ttl |
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584 ) { |
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585 final String uuid = artifact.identifier(); |
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586 |
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587 if (!isValidIdentifier(uuid)) { |
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588 throw new RuntimeException("No valid UUID"); |
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589 } |
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590 |
174
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591 final int [] id = new int[1]; |
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592 |
305
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593 SQLExecutor.Instance exec = sqlExecutor.new Instance() { |
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594 public boolean doIt() throws SQLException { |
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595 |
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596 prepareStatement(SQL_GET_ID); |
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597 stmnt.setString(1, uuid); |
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598 result = stmnt.executeQuery(); |
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599 |
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600 Integer ID = result.next() |
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601 ? Integer.valueOf(result.getInt(1)) |
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602 : null; |
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603 |
174
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604 reset(); |
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605 |
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606 if (ID != null) { // already in database |
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607 prepareStatement(SQL_REPLACE); |
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608 |
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609 if (ttl == null) { |
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610 stmnt.setNull(1, Types.BIGINT); |
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611 } |
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612 else { |
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613 stmnt.setLong(1, ttl.longValue()); |
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614 } |
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615 |
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616 stmnt.setString(2, factory.getName()); |
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617 stmnt.setBytes( |
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618 3, |
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619 factory.getSerializer().toBytes(artifact)); |
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620 id[0] = ID.intValue(); |
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621 stmnt.setInt(4, id[0]); |
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622 } |
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623 else { // new artifact |
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624 prepareStatement(SQL_NEXT_ID); |
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625 result = stmnt.executeQuery(); |
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626 |
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627 if (!result.next()) { |
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628 logger.error("No id generated"); |
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629 return false; |
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630 } |
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631 |
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632 reset(); |
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633 |
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634 prepareStatement(SQL_INSERT); |
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635 |
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636 id[0] = result.getInt(1); |
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637 stmnt.setInt(1, id[0]); |
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638 stmnt.setString(2, uuid); |
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639 if (ttl == null) { |
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640 stmnt.setNull(3, Types.BIGINT); |
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641 } |
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642 else { |
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643 stmnt.setLong(3, ttl.longValue()); |
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644 } |
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645 |
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646 stmnt.setString(4, factory.getName()); |
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647 |
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648 stmnt.setBytes( |
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649 5, |
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650 factory.getSerializer().toBytes(artifact)); |
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651 } |
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652 stmnt.execute(); |
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653 conn.commit(); |
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654 return true; |
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655 } |
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656 }; |
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657 |
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658 if (!exec.runWrite()) { |
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659 throw new RuntimeException("failed insert artifact into database"); |
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660 } |
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661 |
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662 return id[0]; |
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663 } |
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664 |
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665 /** |
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666 * Internal method to store an artifact inside the database. |
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667 * @param artifact The artifact to be stored. |
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668 * @param factory The factory which created the artifact. |
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669 * @param ttl The initial time to live of the artifact. |
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670 * @return The database id of the stored artifact. |
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671 */ |
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672 protected int insertDatabase( |
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673 final Artifact artifact, |
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674 final ArtifactFactory factory, |
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675 final Long ttl |
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676 ) { |
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677 final int [] id = new int[1]; |
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678 |
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679 SQLExecutor.Instance exec = sqlExecutor.new Instance() { |
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680 public boolean doIt() throws SQLException { |
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681 prepareStatement(SQL_NEXT_ID); |
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682 result = stmnt.executeQuery(); |
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683 |
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684 if (!result.next()) { |
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685 logger.error("No id generated"); |
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686 return false; |
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687 } |
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688 |
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689 id[0] = result.getInt(1); |
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690 |
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691 reset(); |
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692 prepareStatement(SQL_INSERT); |
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693 |
174
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694 String uuid = artifact.identifier(); |
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695 stmnt.setInt(1, id[0]); |
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696 stmnt.setString(2, uuid); |
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697 if (ttl == null) { |
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698 stmnt.setNull(3, Types.BIGINT); |
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699 } |
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700 else { |
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701 stmnt.setLong(3, ttl.longValue()); |
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702 } |
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703 |
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704 stmnt.setString(4, factory.getName()); |
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705 |
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706 stmnt.setBytes( |
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707 5, |
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708 factory.getSerializer().toBytes(artifact)); |
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709 |
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710 stmnt.execute(); |
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711 |
174
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712 conn.commit(); |
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713 return true; |
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714 } |
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715 }; |
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716 |
174
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717 if (!exec.runWrite()) { |
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718 throw new RuntimeException("failed insert artifact into database"); |
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719 } |
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720 |
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721 return id[0]; |
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722 } |
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723 |
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724 /** |
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725 * Touches the access timestamp of a given artifact to prevent |
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726 * that it will be removed from the database by the database cleaner. |
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727 * @param artifact The persistent wrapper around the living artifact. |
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728 */ |
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729 public void touch(final PersistentArtifact artifact) { |
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730 sqlExecutor.new Instance() { |
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731 public boolean doIt() throws SQLException { |
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732 prepareStatement(SQL_TOUCH); |
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733 stmnt.setInt(1, artifact.getId()); |
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734 stmnt.execute(); |
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735 conn.commit(); |
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736 return true; |
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737 } |
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738 }.runWrite(); |
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739 } |
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740 |
90
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741 /** |
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742 * Writes modification of an artifact back to the database. |
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743 * @param artifact The persistent wrapper around a living |
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744 * artifact. |
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745 */ |
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746 public void store(final PersistentArtifact artifact) { |
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747 sqlExecutor.new Instance() { |
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748 public boolean doIt() throws SQLException { |
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749 prepareStatement(SQL_UPDATE); |
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750 stmnt.setInt(2, artifact.getId()); |
26
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751 |
174
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752 byte [] bytes = artifact |
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753 .getSerializer() |
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754 .toBytes(artifact.getArtifact()); |
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755 |
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756 stmnt.setBytes(1, bytes); |
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757 stmnt.execute(); |
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758 conn.commit(); |
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759 return true; |
26
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760 } |
174
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761 }.runWrite(); |
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762 } |
133
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763 |
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764 public User createUser( |
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765 final String name, |
174
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766 final Document role, |
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767 final UserFactory factory, |
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768 final Object context |
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769 ) { |
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770 final User [] user = new User[1]; |
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771 |
235
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772 final byte [] roleData = XMLUtils.toByteArray(role, true); |
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773 |
305
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774 SQLExecutor.Instance exec = sqlExecutor.new Instance() { |
174
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775 public boolean doIt() throws SQLException { |
138
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776 |
174
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777 prepareStatement(SQL_USERS_NEXT_ID); |
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778 result = stmnt.executeQuery(); |
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779 |
146
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780 if (!result.next()) { |
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781 return false; |
138
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782 } |
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783 |
145
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784 int id = result.getInt(1); |
138
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785 |
174
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786 reset(); |
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787 |
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788 String identifier = newIdentifier(); |
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789 |
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790 prepareStatement(SQL_USERS_INSERT); |
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791 |
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792 stmnt.setInt(1, id); |
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793 stmnt.setString(2, identifier); |
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794 stmnt.setString(3, name); |
138
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795 |
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796 if (roleData == null) { |
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797 stmnt.setNull(4, Types.BIGINT); |
138
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798 } |
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799 else { |
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800 stmnt.setBytes(4, roleData); |
138
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801 } |
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802 |
174
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803 stmnt.execute(); |
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804 conn.commit(); |
138
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805 |
174
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806 user[0] = factory.createUser( |
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807 identifier, name, role, context); |
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808 return true; |
138
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809 } |
174
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810 }; |
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811 |
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812 return exec.runWrite() ? user[0] : null; |
133
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813 } |
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814 |
174
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815 public boolean deleteUser(final String identifier) { |
144
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816 |
177
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|
817 if (!isValidIdentifier(identifier)) { |
154
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818 return false; |
147
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|
819 } |
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820 |
305
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|
821 SQLExecutor.Instance exec = sqlExecutor.new Instance() { |
174
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822 public boolean doIt() throws SQLException { |
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823 prepareStatement(SQL_USERS_SELECT_ID_BY_GID); |
144
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824 |
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825 stmnt.setString(1, identifier); |
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826 result = stmnt.executeQuery(); |
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827 |
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828 if (!result.next()) { // No such user |
154
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829 return false; |
144
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|
830 } |
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|
831 |
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832 int id = result.getInt(1); |
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|
833 |
174
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|
834 reset(); |
144
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835 |
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836 // outdate the artifacts exclusively used by the user |
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837 |
174
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838 prepareStatement(SQL_OUTDATE_ARTIFACTS_USER); |
144
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839 stmnt.setInt(1, id); |
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840 stmnt.setInt(2, id); |
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|
841 stmnt.execute(); |
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|
842 |
174
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|
843 reset(); |
144
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|
844 |
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845 // delete the collection items of the user |
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846 |
174
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847 prepareStatement(SQL_DELETE_USER_COLLECTION_ITEMS); |
144
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848 stmnt.setInt(1, id); |
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|
849 stmnt.execute(); |
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|
850 |
174
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851 reset(); |
144
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|
852 |
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853 // delete the collections of the user |
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|
854 |
174
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855 prepareStatement(SQL_USERS_DELETE_COLLECTIONS); |
144
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|
856 stmnt.setInt(1, id); |
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|
857 stmnt.execute(); |
174
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|
858 |
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|
859 reset(); |
144
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|
860 |
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861 // delete the user |
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|
862 |
174
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863 prepareStatement(SQL_USERS_DELETE_ID); |
144
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|
864 stmnt.setInt(1, id); |
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|
865 stmnt.execute(); |
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|
866 |
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|
867 conn.commit(); |
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868 return true; |
144
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|
869 } |
174
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870 }; |
154
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|
871 |
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872 return exec.runWrite(); |
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873 } |
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874 |
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875 public User getUser( |
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876 final String identifier, |
174
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877 final UserFactory factory, |
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878 final Object context |
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879 ) { |
177
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880 if (!isValidIdentifier(identifier)) { |
147
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881 logger.debug("Invalid UUID: '" + identifier + "'"); |
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882 return null; |
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883 } |
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|
884 |
174
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885 final User [] user = new User[1]; |
147
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|
886 |
305
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303
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|
887 SQLExecutor.Instance exec = sqlExecutor.new Instance() { |
174
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888 public boolean doIt() throws SQLException { |
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889 prepareStatement(SQL_USERS_SELECT_GID); |
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890 stmnt.setString(1, identifier); |
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891 result = stmnt.executeQuery(); |
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892 if (!result.next()) { // no such user |
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893 return false; |
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894 } |
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895 // omit id |
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896 String name = result.getString(2); |
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897 byte [] roleData = result.getBytes(3); |
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898 |
235
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899 Document role = XMLUtils.fromByteArray(roleData, true); |
174
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900 |
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901 user[0] = factory.createUser( |
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902 identifier, name, role, context); |
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|
903 return true; |
147
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|
904 } |
174
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|
905 }; |
147
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|
906 |
174
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|
907 return exec.runRead() ? user[0] : null; |
133
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|
908 } |
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|
909 |
174
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|
910 public User [] getUsers( |
233
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diff
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|
911 final UserFactory factory, |
174
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|
912 final Object context |
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|
913 ) { |
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|
914 final ArrayList<User> users = new ArrayList<User>(); |
148
101a52d3ad08
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|
915 |
305
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303
diff
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|
916 SQLExecutor.Instance exec = sqlExecutor.new Instance() { |
174
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|
917 public boolean doIt() throws SQLException { |
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|
918 prepareStatement(SQL_USERS_SELECT_ALL); |
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|
919 result = stmnt.executeQuery(); |
148
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|
920 |
174
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diff
changeset
|
921 while (result.next()) { |
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|
922 // omit id |
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|
923 String identifier = result.getString(2); |
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|
924 String name = result.getString(3); |
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diff
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|
925 byte [] roleData = result.getBytes(4); |
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|
926 |
235
3e29395ebac6
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diff
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|
927 Document role = XMLUtils.fromByteArray(roleData, true); |
174
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|
928 User user = factory.createUser( |
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diff
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|
929 identifier, name, role, context); |
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|
930 users.add(user); |
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|
931 } |
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diff
changeset
|
932 return true; |
148
101a52d3ad08
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147
diff
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|
933 } |
174
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diff
changeset
|
934 }; |
148
101a52d3ad08
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diff
changeset
|
935 |
174
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diff
changeset
|
936 return exec.runRead() |
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diff
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|
937 ? users.toArray(new User[users.size()]) |
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Reduce the code repetition and the complexity of the backend.
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diff
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|
938 : null; |
133
2950c6011afa
Fixed typo in keys.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
128
diff
changeset
|
939 } |
156
a76de72ad6d1
Added stubs for the collection handling in db backend.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
154
diff
changeset
|
940 |
159
db0d20440b92
Added code to create collections.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
158
diff
changeset
|
941 public ArtifactCollection createCollection( |
233
16cd059945e5
Removed trailing whitespace.
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230
diff
changeset
|
942 final String ownerIdentifier, |
174
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diff
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|
943 final String name, |
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170
diff
changeset
|
944 final ArtifactCollectionFactory factory, |
199
face2302387c
Insert collection attribute into database, too.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
194
diff
changeset
|
945 final Document attribute, |
174
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diff
changeset
|
946 final Object context |
159
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158
diff
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|
947 ) { |
db0d20440b92
Added code to create collections.
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diff
changeset
|
948 if (name == null) { |
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diff
changeset
|
949 logger.debug("Name is null"); |
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diff
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|
950 return null; |
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diff
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|
951 } |
db0d20440b92
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158
diff
changeset
|
952 |
177
77cd37a93fca
Backend: isIdentifierValid more symmetric to new newIndentifier
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parents:
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diff
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|
953 if (!isValidIdentifier(ownerIdentifier)) { |
159
db0d20440b92
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diff
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|
954 logger.debug("Invalid owner id: '" + ownerIdentifier + "'"); |
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|
955 return null; |
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diff
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|
956 } |
db0d20440b92
Added code to create collections.
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158
diff
changeset
|
957 |
235
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233
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|
958 final ArtifactCollection [] collection = new ArtifactCollection[1]; |
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|
959 |
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|
960 final byte [] data = XMLUtils.toByteArray(attribute, true); |
159
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diff
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|
961 |
305
f33401ea2a6c
Artifact database: Refactorized the usage of dialect independent SQL to be reusable.
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parents:
303
diff
changeset
|
962 SQLExecutor.Instance exec = sqlExecutor.new Instance() { |
174
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|
963 public boolean doIt() throws SQLException { |
159
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|
964 // fetch owner id |
174
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|
965 prepareStatement(SQL_USERS_SELECT_ID_BY_GID); |
159
db0d20440b92
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|
966 stmnt.setString(1, ownerIdentifier); |
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|
967 result = stmnt.executeQuery(); |
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|
968 |
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|
969 if (!result.next()) { // no such user |
174
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|
970 return false; |
159
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|
971 } |
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diff
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|
972 |
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|
973 int ownerId = result.getInt(1); |
174
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|
974 reset(); |
159
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|
975 |
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diff
changeset
|
976 // fetch new collection seq number. |
174
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|
977 prepareStatement(SQL_COLLECTIONS_NEXT_ID); |
159
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|
978 result = stmnt.executeQuery(); |
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|
979 |
db0d20440b92
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changeset
|
980 if (!result.next()) { // no identifier generated |
174
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981 return false; |
159
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982 } |
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983 |
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984 int id = result.getInt(1); |
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985 reset(); |
159
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986 |
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987 String identifier = newIdentifier(); |
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988 |
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989 prepareStatement(SQL_COLLECTIONS_INSERT); |
159
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990 |
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991 stmnt.setInt(1, id); |
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992 stmnt.setString(2, identifier); |
161
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993 stmnt.setString(3, name); |
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994 stmnt.setInt(4, ownerId); |
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995 |
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996 // XXX: A bit odd: we don't have a collection, yet. |
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997 Long ttl = factory.timeToLiveUntouched(null, context); |
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998 |
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999 if (ttl == null) { |
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1000 stmnt.setNull(5, Types.BIGINT); |
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1001 } |
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|
1002 else { |
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1003 stmnt.setLong(5, ttl); |
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1004 } |
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1005 |
199
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1006 if (data == null) { |
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1007 stmnt.setNull(6, Types.BINARY); |
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1008 } |
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1009 else { |
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1010 stmnt.setBytes(6, data); |
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1011 } |
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1012 |
159
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1013 stmnt.execute(); |
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1014 conn.commit(); |
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1015 |
174
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1016 reset(); |
170
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1017 |
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1018 // fetch creation time from database |
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1019 // done this way to use the time system |
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1020 // of the database. |
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1021 |
174
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1022 prepareStatement(SQL_COLLECTIONS_CREATION_TIME); |
170
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1023 stmnt.setInt(1, id); |
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1024 |
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1025 result = stmnt.executeQuery(); |
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1026 |
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1027 Date creationTime = null; |
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1028 |
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1029 if (result.next()) { |
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1030 Timestamp timestamp = result.getTimestamp(1); |
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1031 creationTime = new Date(timestamp.getTime()); |
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1032 } |
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1033 |
174
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|
1034 collection[0] = factory.createCollection( |
281
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|
1035 identifier, name, creationTime, ttl, attribute, context); |
174
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1036 |
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|
1037 return true; |
159
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1038 } |
174
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|
1039 }; |
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|
1040 |
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|
1041 return exec.runWrite() ? collection[0]: null; |
156
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|
1042 } |
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|
1043 |
217
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diff
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|
1044 public ArtifactCollection getCollection( |
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|
1045 final String collectionId, |
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diff
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|
1046 final ArtifactCollectionFactory collectionFactory, |
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diff
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|
1047 final UserFactory userFactory, |
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|
1048 final Object context |
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206
diff
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|
1049 ) { |
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206
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|
1050 if (!isValidIdentifier(collectionId)) { |
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206
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|
1051 logger.debug("collection id is not valid: " + collectionId); |
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206
diff
changeset
|
1052 return null; |
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diff
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|
1053 } |
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206
diff
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|
1054 |
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|
1055 final ArtifactCollection[] ac = new ArtifactCollection[1]; |
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diff
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|
1056 |
305
f33401ea2a6c
Artifact database: Refactorized the usage of dialect independent SQL to be reusable.
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parents:
303
diff
changeset
|
1057 SQLExecutor.Instance exec = sqlExecutor.new Instance() { |
217
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diff
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|
1058 public boolean doIt() throws SQLException { |
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206
diff
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|
1059 |
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206
diff
changeset
|
1060 prepareStatement(SQL_COLLECTIONS_SELECT_GID); |
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|
1061 stmnt.setString(1, collectionId); |
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206
diff
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|
1062 |
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206
diff
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|
1063 result = stmnt.executeQuery(); |
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diff
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|
1064 if (!result.next()) { |
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diff
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|
1065 logger.debug("No such collection"); |
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diff
changeset
|
1066 return false; |
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diff
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|
1067 } |
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diff
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|
1068 |
235
3e29395ebac6
The XML documents stored aside users, collections and collection items are now compressed/decompressed transparently.
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diff
changeset
|
1069 String collectionName = result.getString(2); |
3e29395ebac6
The XML documents stored aside users, collections and collection items are now compressed/decompressed transparently.
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diff
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|
1070 String ownerId = result.getString(3); |
3e29395ebac6
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diff
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|
1071 Date creationTime = |
217
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206
diff
changeset
|
1072 new Date(result.getTimestamp(4).getTime()); |
235
3e29395ebac6
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diff
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|
1073 Date lastAccess = |
217
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206
diff
changeset
|
1074 new Date(result.getTimestamp(5).getTime()); |
235
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233
diff
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|
1075 Document attr = |
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diff
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|
1076 XMLUtils.fromByteArray(result.getBytes(6), true); |
281
942a54670a72
Made the TTL of a Collection retrievable via getter method.
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275
diff
changeset
|
1077 long ttl = result.getLong(7); |
217
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diff
changeset
|
1078 |
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diff
changeset
|
1079 ArtifactCollection collection = |
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changeset
|
1080 collectionFactory.createCollection( |
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diff
changeset
|
1081 collectionId, |
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206
diff
changeset
|
1082 collectionName, |
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206
diff
changeset
|
1083 creationTime, |
281
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Made the TTL of a Collection retrievable via getter method.
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diff
changeset
|
1084 ttl, |
217
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206
diff
changeset
|
1085 attr, |
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206
diff
changeset
|
1086 context); |
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206
diff
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|
1087 |
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206
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|
1088 if (ownerId != null) { |
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206
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1089 collection.setUser(new LazyBackendUser( |
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1090 ownerId, userFactory, Backend.this, context)); |
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1091 } |
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1092 |
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1093 ac[0] = collection; |
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1094 |
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1095 return true; |
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1096 } |
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1097 }; |
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1098 |
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1099 return exec.runRead() ? ac[0] : null; |
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1100 } |
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1101 |
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1102 public ArtifactCollection [] listCollections( |
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1103 final String ownerIdentifier, |
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1104 final Document data, |
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1105 final ArtifactCollectionFactory collectionFactory, |
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1106 final UserFactory userFactory, |
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1107 final Object context |
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1108 ) { |
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1109 if (ownerIdentifier != null |
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1110 && !isValidIdentifier(ownerIdentifier)) { |
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1111 logger.debug("Invalid owner id: '" + ownerIdentifier + "'"); |
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1112 return null; |
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1113 } |
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1114 |
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1115 final ArrayList<ArtifactCollection> collections = |
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1116 new ArrayList<ArtifactCollection>(); |
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1117 |
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1118 SQLExecutor.Instance exec = sqlExecutor.new Instance() { |
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1119 |
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1120 public boolean doIt() throws SQLException { |
167
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1121 |
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1122 if (ownerIdentifier != null) { |
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1123 prepareStatement(SQL_COLLECTIONS_SELECT_USER); |
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1124 stmnt.setString(1, ownerIdentifier); |
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1125 } |
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1126 else { |
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1127 prepareStatement(SQL_COLLECTIONS_SELECT_ALL); |
167
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1128 } |
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1129 |
174
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1130 result = stmnt.executeQuery(); |
167
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1131 |
235
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1132 HashMap<String, LazyBackendUser> users = |
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1133 new HashMap<String, LazyBackendUser>(); |
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1134 |
174
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1135 while (result.next()) { |
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1136 String collectionIdentifier = result.getString(1); |
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1137 String collectionName = result.getString(2); |
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1138 Date creationTime = |
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1139 new Date(result.getTimestamp(3).getTime()); |
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|
1140 String userIdentifier = result.getString(4); |
281
942a54670a72
Made the TTL of a Collection retrievable via getter method.
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|
1141 long ttl = result.getLong(5); |
174
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|
1142 |
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|
1143 ArtifactCollection collection = |
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1144 collectionFactory.createCollection( |
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|
1145 collectionIdentifier, |
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|
1146 collectionName, |
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|
1147 creationTime, |
281
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diff
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|
1148 ttl, |
174
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|
1149 data, |
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|
1150 context); |
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|
1151 |
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|
1152 if (userIdentifier != null) { |
235
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1153 LazyBackendUser user = users.get(userIdentifier); |
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|
1154 if (user == null) { |
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diff
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|
1155 user = new LazyBackendUser( |
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|
1156 userIdentifier, userFactory, |
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diff
changeset
|
1157 Backend.this, context); |
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|
1158 users.put(userIdentifier, user); |
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|
1159 } |
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|
1160 collection.setUser(user); |
174
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|
1161 } |
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|
1162 |
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|
1163 collections.add(collection); |
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|
1164 } |
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|
1165 return true; |
167
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|
1166 } |
174
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|
1167 }; |
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|
1168 |
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|
1169 return exec.runRead() |
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|
1170 ? collections.toArray(new ArtifactCollection[collections.size()]) |
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1171 : null; |
156
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|
1172 } |
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|
1173 |
174
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1174 |
175
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|
1175 public boolean deleteCollection(final String collectionId) { |
177
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|
1176 if (!isValidIdentifier(collectionId)) { |
175
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1177 logger.debug("Invalid collection id: '" + collectionId + "'"); |
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1178 return false; |
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|
1179 } |
305
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|
1180 SQLExecutor.Instance exec = sqlExecutor.new Instance() { |
175
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1181 public boolean doIt() throws SQLException { |
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1182 // fetch collection id |
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|
1183 prepareStatement(SQL_COLLECTIONS_ID_BY_GID); |
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1184 stmnt.setString(1, collectionId); |
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1185 result = stmnt.executeQuery(); |
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1186 if (!result.next()) { |
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1187 logger.debug("No such collection: " + collectionId); |
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1188 return false; |
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1189 } |
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1190 int id = result.getInt(1); |
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1191 reset(); |
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1192 |
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|
1193 // outdate artifacts that are only in this collection |
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1194 prepareStatement(SQL_OUTDATE_ARTIFACTS_COLLECTION); |
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1195 stmnt.setInt(1, id); |
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1196 stmnt.setInt(2, id); |
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1197 stmnt.execute(); |
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1198 reset(); |
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1199 |
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1200 // delete the collection items |
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1201 prepareStatement(SQL_DELETE_COLLECTION_ITEMS); |
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1202 stmnt.setInt(1, id); |
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1203 stmnt.execute(); |
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1204 reset(); |
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1205 |
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1206 // delete the collection |
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1207 prepareStatement(SQL_DELETE_COLLECTION); |
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1208 stmnt.setInt(1, id); |
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1209 stmnt.execute(); |
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1210 conn.commit(); |
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1211 return true; |
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1212 } |
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1213 }; |
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1214 return exec.runWrite(); |
156
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1215 } |
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1216 |
253
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1217 public Document getCollectionAttribute(final String collectionId) { |
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1218 if (!isValidIdentifier(collectionId)) { |
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1219 logger.debug("collection id is not valid: " + collectionId); |
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1220 } |
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1221 |
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1222 final byte[][] data = new byte[1][1]; |
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1223 |
305
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1224 SQLExecutor.Instance exec = sqlExecutor.new Instance() { |
253
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1225 public boolean doIt() throws SQLException { |
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1226 prepareStatement(SQL_COLLECTION_GET_ATTRIBUTE); |
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1227 stmnt.setString(1, collectionId); |
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1228 result = stmnt.executeQuery(); |
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1229 if (!result.next()) { |
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1230 logger.debug("No such collection."); |
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1231 return false; |
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1232 } |
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1233 |
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1234 data[0] = result.getBytes(1); |
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1235 return true; |
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1236 } |
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1237 }; |
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1238 |
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1239 return exec.runRead() |
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1240 ? XMLUtils.fromByteArray(data[0], true) |
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1241 : null; |
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1242 } |
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1243 |
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|
1244 public boolean setCollectionAttribute( |
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1245 final String collectionId, |
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1246 Document attribute |
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1247 ) { |
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|
1248 if (!isValidIdentifier(collectionId)) { |
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|
1249 logger.debug("collection id is not valid: " + collectionId); |
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1250 return false; |
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1251 } |
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1252 |
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|
1253 final byte [] data = XMLUtils.toByteArray(attribute, true); |
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1254 |
305
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diff
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|
1255 return sqlExecutor.new Instance() { |
253
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Enabled the artifact database to handle requests specific to collection attributes and collection item attributes.
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|
1256 public boolean doIt() throws SQLException { |
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|
1257 |
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diff
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|
1258 // set the column in collection items |
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Enabled the artifact database to handle requests specific to collection attributes and collection item attributes.
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|
1259 prepareStatement(SQL_COLLECTION_SET_ATTRIBUTE); |
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|
1260 if (data == null) { |
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|
1261 stmnt.setNull(1, Types.BINARY); |
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|
1262 } |
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1263 else { |
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Enabled the artifact database to handle requests specific to collection attributes and collection item attributes.
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diff
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|
1264 stmnt.setBytes(1, data); |
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|
1265 } |
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Enabled the artifact database to handle requests specific to collection attributes and collection item attributes.
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diff
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|
1266 stmnt.setString(2, collectionId); |
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Enabled the artifact database to handle requests specific to collection attributes and collection item attributes.
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|
1267 stmnt.execute(); |
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diff
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|
1268 reset(); |
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diff
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|
1269 |
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|
1270 // touch the collection |
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diff
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|
1271 prepareStatement(SQL_COLLECTIONS_TOUCH_BY_GID); |
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|
1272 stmnt.setString(1, collectionId); |
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|
1273 stmnt.execute(); |
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|
1274 |
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diff
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|
1275 conn.commit(); |
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|
1276 return true; |
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|
1277 } |
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|
1278 }.runWrite(); |
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|
1279 } |
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diff
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|
1280 |
252
6de74b0b878e
Changed the method names to get and set the attributes of collection items.
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diff
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|
1281 public Document getCollectionItemAttribute( |
178
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1282 final String collectionId, |
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1283 final String artifactId |
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1284 ) { |
178
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1285 if (!isValidIdentifier(collectionId)) { |
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|
1286 logger.debug("collection id is not valid: " + collectionId); |
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1287 return null; |
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1288 } |
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|
1289 if (!isValidIdentifier(artifactId)) { |
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|
1290 logger.debug("artifact id is not valid: " + artifactId); |
179
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diff
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1291 return null; |
178
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1292 } |
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|
1293 |
235
3e29395ebac6
The XML documents stored aside users, collections and collection items are now compressed/decompressed transparently.
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|
1294 final byte [][] data = new byte[1][1]; |
178
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1295 |
305
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|
1296 SQLExecutor.Instance exec = sqlExecutor.new Instance() { |
178
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1297 public boolean doIt() throws SQLException { |
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|
1298 prepareStatement(SQL_COLLECTION_ITEM_GET_ATTRIBUTE); |
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|
1299 stmnt.setString(1, collectionId); |
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1300 stmnt.setString(2, artifactId); |
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1301 result = stmnt.executeQuery(); |
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1302 if (!result.next()) { |
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|
1303 logger.debug("No such collection item"); |
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1304 return false; |
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1305 } |
235
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1306 data[0] = result.getBytes(1); |
178
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|
1307 return true; |
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1308 } |
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diff
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|
1309 }; |
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|
1310 |
235
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1311 return exec.runRead() |
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1312 ? XMLUtils.fromByteArray(data[0], true) |
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1313 : null; |
156
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1314 } |
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diff
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|
1315 |
252
6de74b0b878e
Changed the method names to get and set the attributes of collection items.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
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242
diff
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|
1316 public boolean setCollectionItemAttribute( |
233
16cd059945e5
Removed trailing whitespace.
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diff
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|
1317 final String collectionId, |
179
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1318 final String artifactId, |
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|
1319 Document attribute |
156
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1320 ) { |
179
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1321 if (!isValidIdentifier(collectionId)) { |
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1322 logger.debug("collection id is not valid: " + collectionId); |
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1323 return false; |
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1324 } |
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1325 if (!isValidIdentifier(artifactId)) { |
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1326 logger.debug("artifact id is not valid: " + artifactId); |
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1327 return false; |
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1328 } |
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1329 |
235
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1330 final byte [] data = XMLUtils.toByteArray(attribute, true); |
179
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1331 |
305
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diff
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|
1332 return sqlExecutor.new Instance() { |
179
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1333 public boolean doIt() throws SQLException { |
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1334 |
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1335 // set the column in collection items |
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1336 prepareStatement(SQL_COLLECTION_ITEM_SET_ATTRIBUTE); |
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|
1337 if (data == null) { |
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1338 stmnt.setNull(1, Types.BINARY); |
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1339 } |
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1340 else { |
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|
1341 stmnt.setBytes(1, data); |
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1342 } |
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|
1343 stmnt.setString(2, collectionId); |
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|
1344 stmnt.setString(3, artifactId); |
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|
1345 stmnt.execute(); |
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|
1346 reset(); |
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diff
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|
1347 |
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diff
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|
1348 // touch the collection |
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diff
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|
1349 prepareStatement(SQL_COLLECTIONS_TOUCH_BY_GID); |
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|
1350 stmnt.setString(1, collectionId); |
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diff
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|
1351 stmnt.execute(); |
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diff
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|
1352 |
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diff
changeset
|
1353 conn.commit(); |
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diff
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|
1354 return true; |
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diff
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|
1355 } |
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diff
changeset
|
1356 }.runWrite(); |
156
a76de72ad6d1
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diff
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|
1357 } |
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diff
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|
1358 |
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diff
changeset
|
1359 public boolean addCollectionArtifact( |
176
a0eff2227588
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diff
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|
1360 final String collectionId, |
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diff
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|
1361 final String artifactId, |
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diff
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|
1362 final Document attribute |
156
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diff
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|
1363 ) { |
177
77cd37a93fca
Backend: isIdentifierValid more symmetric to new newIndentifier
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176
diff
changeset
|
1364 if (!isValidIdentifier(collectionId)) { |
176
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diff
changeset
|
1365 logger.debug("Invalid collection id: '" + collectionId + "'"); |
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diff
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|
1366 return false; |
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diff
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|
1367 } |
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diff
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|
1368 |
177
77cd37a93fca
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176
diff
changeset
|
1369 if (!isValidIdentifier(artifactId)) { |
176
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175
diff
changeset
|
1370 logger.debug("Invalid artifact id: '" + artifactId + "'"); |
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|
1371 return false; |
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diff
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|
1372 } |
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diff
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|
1373 |
235
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diff
changeset
|
1374 final byte [] data = XMLUtils.toByteArray(attribute, true); |
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diff
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|
1375 |
305
f33401ea2a6c
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
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303
diff
changeset
|
1376 SQLExecutor.Instance exec = sqlExecutor.new Instance() { |
176
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diff
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|
1377 public boolean doIt() throws SQLException { |
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diff
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|
1378 // fetch artifact id |
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diff
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|
1379 prepareStatement(SQL_GET_ID); |
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diff
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|
1380 stmnt.setString(1, artifactId); |
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|
1381 result = stmnt.executeQuery(); |
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diff
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|
1382 if (!result.next()) { |
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diff
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|
1383 logger.debug("No such artifact: " + artifactId); |
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|
1384 return false; |
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|
1385 } |
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|
1386 int aid = result.getInt(1); |
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|
1387 reset(); |
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|
1388 |
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diff
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|
1389 // fetch collection id |
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changeset
|
1390 prepareStatement(SQL_COLLECTIONS_ID_BY_GID); |
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|
1391 stmnt.setString(1, collectionId); |
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|
1392 result = stmnt.executeQuery(); |
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|
1393 if (!result.next()) { |
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changeset
|
1394 logger.debug("No such collection: " + collectionId); |
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|
1395 } |
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|
1396 int cid = result.getInt(1); |
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|
1397 reset(); |
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|
1398 |
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diff
changeset
|
1399 // check if artifact is already in collection |
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|
1400 prepareStatement(SQL_COLLECTION_CHECK_ARTIFACT); |
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|
1401 stmnt.setInt(1, aid); |
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|
1402 stmnt.setInt(2, cid); |
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|
1403 result = stmnt.executeQuery(); |
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|
1404 if (result.next()) { |
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|
1405 logger.debug("artifact already in collection"); |
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|
1406 return false; |
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|
1407 } |
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|
1408 reset(); |
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diff
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|
1409 |
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changeset
|
1410 // fetch fresh id for new collection item |
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diff
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|
1411 prepareStatement(SQL_COLLECTION_ITEMS_ID_NEXTVAL); |
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|
1412 result = stmnt.executeQuery(); |
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|
1413 if (!result.next()) { |
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|
1414 logger.debug("no collection item id generated"); |
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1415 return false; |
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1416 } |
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1417 int ci_id = result.getInt(1); |
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|
1418 reset(); |
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1419 |
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1420 // insert new collection item |
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1421 prepareStatement(SQL_COLLECTION_ITEMS_INSERT); |
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1422 stmnt.setInt(1, ci_id); |
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|
1423 stmnt.setInt(2, cid); |
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|
1424 stmnt.setInt(3, aid); |
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1425 |
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1426 if (data == null) { |
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1427 stmnt.setNull(4, Types.BINARY); |
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1428 } |
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1429 else { |
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|
1430 stmnt.setBytes(4, data); |
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1431 } |
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|
1432 stmnt.execute(); |
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1433 conn.commit(); |
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1434 |
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|
1435 return true; |
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1436 } |
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1437 }; |
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|
1438 return exec.runWrite(); |
156
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1439 } |
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1440 |
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|
1441 public boolean removeCollectionArtifact( |
180
38fbbeffe8fe
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|
1442 final String collectionId, |
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|
1443 final String artifactId |
156
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1444 ) { |
180
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1445 if (!isValidIdentifier(collectionId)) { |
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|
1446 logger.debug("Invalid collection id: '" + collectionId + "'"); |
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|
1447 return false; |
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1448 } |
305
f33401ea2a6c
Artifact database: Refactorized the usage of dialect independent SQL to be reusable.
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diff
changeset
|
1449 return sqlExecutor.new Instance() { |
180
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1450 public boolean doIt() throws SQLException { |
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1451 |
38fbbeffe8fe
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|
1452 // fetch id, collection id and artitfact id |
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|
1453 prepareStatement(SQL_COLLECTION_ITEM_ID_CID_AID); |
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1454 stmnt.setString(1, collectionId); |
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1455 stmnt.setString(2, artifactId); |
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|
1456 result = stmnt.executeQuery(); |
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1457 if (!result.next()) { |
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1458 logger.debug("No such collection item"); |
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|
1459 return false; |
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|
1460 } |
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|
1461 int id = result.getInt(1); |
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|
1462 int cid = result.getInt(2); |
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|
1463 int aid = result.getInt(3); |
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|
1464 reset(); |
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|
1465 |
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|
1466 // outdate artifact iff it is only in this collection |
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|
1467 prepareStatement(SQL_COLLECTION_ITEM_OUTDATE_ARTIFACT); |
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|
1468 stmnt.setInt(1, aid); |
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diff
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|
1469 stmnt.setInt(2, cid); |
194
fde2f193e846
Small typo fix
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diff
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|
1470 stmnt.setInt(3, aid); |
180
38fbbeffe8fe
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|
1471 stmnt.execute(); |
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diff
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|
1472 reset(); |
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diff
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|
1473 |
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|
1474 // delete collection item |
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|
1475 prepareStatement(SQL_COLLECTION_ITEM_DELETE); |
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|
1476 stmnt.setInt(1, id); |
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|
1477 stmnt.execute(); |
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diff
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|
1478 reset(); |
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diff
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|
1479 |
38fbbeffe8fe
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|
1480 // touch collection |
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|
1481 prepareStatement(SQL_COLLECTIONS_TOUCH_BY_ID); |
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|
1482 stmnt.setInt(1, cid); |
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diff
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|
1483 stmnt.execute(); |
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diff
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|
1484 |
38fbbeffe8fe
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diff
changeset
|
1485 conn.commit(); |
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diff
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|
1486 return true; |
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|
1487 } |
38fbbeffe8fe
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|
1488 }.runWrite(); |
156
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|
1489 } |
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diff
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|
1490 |
184
a22b7e367b25
Added Backend code to list the collection items in a collection.
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diff
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|
1491 public CollectionItem [] listCollectionArtifacts( |
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diff
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|
1492 final String collectionId |
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diff
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|
1493 ) { |
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|
1494 if (!isValidIdentifier(collectionId)) { |
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|
1495 logger.debug("Invalid collection id: '" + collectionId + "'"); |
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|
1496 return null; |
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|
1497 } |
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|
1498 |
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|
1499 final ArrayList<CollectionItem> collectionItems = |
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|
1500 new ArrayList<CollectionItem>(); |
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|
1501 |
305
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diff
changeset
|
1502 SQLExecutor.Instance exec = sqlExecutor.new Instance() { |
184
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|
1503 public boolean doIt() throws SQLException { |
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|
1504 prepareStatement(SQL_COLLECTION_ITEMS_LIST_GID); |
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|
1505 stmnt.setString(1, collectionId); |
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|
1506 result = stmnt.executeQuery(); |
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|
1507 while (result.next()) { |
186
15c7638511dc
Added an interface for CollectionItems and renamed the CollectionItem class from the artifact-database package to DefaultCollectionItem - because this is the default implementation of the interface.
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diff
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|
1508 CollectionItem item = new DefaultCollectionItem( |
184
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|
1509 result.getString(1), |
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|
1510 result.getBytes(2)); |
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|
1511 collectionItems.add(item); |
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1512 } |
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1513 return true; |
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|
1514 } |
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|
1515 }; |
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|
1516 |
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|
1517 return exec.runRead() |
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|
1518 ? collectionItems.toArray( |
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|
1519 new CollectionItem[collectionItems.size()]) |
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1520 : null; |
156
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|
1521 } |
273
22a90706d32d
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diff
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|
1522 |
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changeset
|
1523 |
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diff
changeset
|
1524 public boolean setCollectionTTL(final String uuid, final Long ttl) { |
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1525 if (!isValidIdentifier(uuid)) { |
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1526 logger.debug("Invalid collection id: '" + uuid + "'"); |
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1527 return false; |
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1528 } |
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1529 |
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1530 return sqlExecutor.new Instance() { |
273
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1531 public boolean doIt() throws SQLException { |
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1532 prepareStatement(SQL_UPDATE_COLLECTION_TTL); |
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1533 if (ttl == null) { |
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1534 stmnt.setNull(1, Types.BIGINT); |
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1535 } |
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1536 else { |
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1537 stmnt.setLong(1, ttl); |
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1538 } |
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1539 stmnt.setString(2, uuid); |
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1540 stmnt.execute(); |
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1541 conn.commit(); |
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1542 |
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1543 return true; |
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1544 } |
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1545 }.runWrite(); |
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1546 } |
275
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1547 |
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1548 |
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1549 public boolean setCollectionName(final String uuid, final String name) { |
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1550 if (!isValidIdentifier(uuid)) { |
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1551 logger.debug("Invalid collection id: '" + uuid + "'"); |
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1552 return false; |
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1553 } |
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1554 |
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1555 return sqlExecutor.new Instance() { |
275
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1556 public boolean doIt() throws SQLException { |
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1557 prepareStatement(SQL_UPDATE_COLLECTION_NAME); |
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1558 stmnt.setString(1, name); |
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1559 stmnt.setString(2, uuid); |
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1560 stmnt.execute(); |
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1561 conn.commit(); |
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1562 |
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1563 return true; |
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1564 } |
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1565 }.runWrite(); |
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1566 } |
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1567 |
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|
1568 public boolean loadAllArtifacts(final ArtifactLoadedCallback alc) { |
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1569 |
308
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|
1570 logger.debug("loadAllArtifacts"); |
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1571 |
303
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1572 if (factoryLookup == null) { |
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|
1573 logger.error("factory lookup == null"); |
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|
1574 return false; |
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|
1575 } |
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|
1576 |
308
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|
1577 boolean success = sqlExecutor.new Instance() { |
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|
1578 @Override |
303
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|
1579 public boolean doIt() throws SQLException { |
308
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|
1580 logger.debug("doIt"); |
303
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|
1581 |
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|
1582 // a little cache to avoid too much deserializations. |
308
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|
1583 LRUCache<String, Artifact> alreadyLoaded = |
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|
1584 new LRUCache<String, Artifact>(200); |
303
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|
1585 |
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|
1586 prepareStatement(SQL_ALL_ARTIFACTS); |
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|
1587 result = stmnt.executeQuery(); |
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|
1588 while (result.next()) { |
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|
1589 String userId = result.getString(1); |
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|
1590 String collectionId = result.getString(2); |
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|
1591 String artifactId = result.getString(3); |
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|
1592 String factoryName = result.getString(4); |
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|
1593 |
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|
1594 Artifact artifact = alreadyLoaded.get(artifactId); |
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|
1595 |
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|
1596 if (artifact != null) { |
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|
1597 alc.artifactLoaded( |
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|
1598 userId, collectionId, artifactId, artifact); |
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|
1599 continue; |
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|
1600 } |
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|
1601 |
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|
1602 ArtifactFactory factory = factoryLookup |
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|
1603 .getArtifactFactory(factoryName); |
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|
1604 |
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|
1605 if (factory == null) { |
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|
1606 logger.error("factory '" + factoryName + "' not found"); |
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|
1607 continue; |
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|
1608 } |
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|
1609 |
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|
1610 byte [] bytes = result.getBytes(5); |
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|
1611 |
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|
1612 artifact = factory.getSerializer().fromBytes(bytes); |
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|
1613 |
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|
1614 if (artifact != null) { |
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|
1615 alc.artifactLoaded( |
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|
1616 userId, collectionId, artifactId, artifact); |
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|
1617 } |
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|
1618 |
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|
1619 alreadyLoaded.put(artifactId, artifact); |
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|
1620 } |
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|
1621 return true; |
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|
1622 } |
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|
1623 }.runRead(); |
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|
1624 |
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|
1625 if (logger.isDebugEnabled()) { |
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|
1626 logger.debug("loadAllArtifacts success: " + success); |
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|
1627 } |
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|
1628 |
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|
1629 return success; |
303
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|
1630 } |
13
0d6badf6af42
Added not yet working backend to artifact database.
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parents:
diff
changeset
|
1631 } |
79
f69e5b87f05f
Implementation to export artifacts as xml (applied patch from issue208 by SLT).
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47
diff
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|
1632 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |