Mercurial > dive4elements > framework
annotate artifact-database/src/main/java/de/intevation/artifactdatabase/Backend.java @ 308:a077bb098eb4
Fixed broken SQL statement. Added debug output.
artifacts/trunk@2427 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author | Sascha L. Teichmann <sascha.teichmann@intevation.de> |
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date | Sun, 31 Jul 2011 17:28:07 +0000 |
parents | d96bcb40dbf9 |
children | 86dd32b45d87 |
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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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Implemented the createCollection() method in the artifact database.
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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.Map; |
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34 import java.util.LinkedHashMap; |
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35 import java.util.HashMap; |
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36 |
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37 import org.apache.log4j.Logger; |
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38 |
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39 import org.w3c.dom.Document; |
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40 |
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41 /** |
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42 * The backend implements the low level layer used to store artifacts |
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43 * in a SQL database. |
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44 * |
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45 * @author <a href="mailto:sascha.teichmann@intevation.de">Sascha L. Teichmann</a> |
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46 */ |
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47 public class Backend |
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48 implements DatabaseCleaner.ArtifactReviver |
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49 { |
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50 private static Logger logger = Logger.getLogger(Backend.class); |
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51 |
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52 /** |
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53 * The SQL statement to create new artifact id inside the database. |
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54 */ |
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55 public String SQL_NEXT_ID; |
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56 |
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57 /** |
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58 * The SQL statement to insert an artifact into the database. |
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59 */ |
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60 public String SQL_INSERT; |
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61 |
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62 /** |
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63 * The SQL statement to update some columns of an existing |
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64 * artifact in the database. |
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65 */ |
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66 public String SQL_UPDATE; |
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67 |
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68 /** |
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69 * The SQL statement to touch the access time of an |
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70 * artifact inside the database. |
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71 */ |
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72 public String SQL_TOUCH; |
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73 |
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74 /** |
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75 * The SQL statement to load an artifact by a given |
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76 * identifier from the database. |
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77 */ |
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78 public String SQL_LOAD_BY_GID; |
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79 |
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80 /** |
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81 * The SQL statement to get the database id of an artifact |
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82 * identified by the identifier. |
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83 */ |
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84 public String SQL_GET_ID; |
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85 |
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86 /** |
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87 * The SQL statement to replace the content of an |
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88 * existing artifact inside the database. |
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89 */ |
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90 public String SQL_REPLACE; |
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91 |
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92 // USER SQL |
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93 |
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94 public String SQL_USERS_NEXT_ID; |
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95 public String SQL_USERS_INSERT; |
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96 public String SQL_USERS_SELECT_ID_BY_GID; |
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97 public String SQL_USERS_SELECT_GID; |
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98 public String SQL_USERS_DELETE_ID; |
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99 public String SQL_USERS_DELETE_COLLECTIONS; |
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100 public String SQL_USERS_SELECT_ALL; |
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101 public String SQL_USERS_COLLECTIONS; |
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102 public String SQL_USERS_COLLECTION_IDS; |
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103 public String SQL_USERS_DELETE_ALL_COLLECTIONS; |
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104 public String SQL_ARTIFACTS_IN_ONLY_COLLECTION_ONLY; |
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105 public String SQL_OUTDATE_ARTIFACTS_COLLECTION; |
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106 public String SQL_UPDATE_COLLECTION_TTL; |
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107 public String SQL_UPDATE_COLLECTION_NAME; |
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108 public String SQL_OUTDATE_ARTIFACTS_USER; |
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109 public String SQL_DELETE_USER_COLLECTION_ITEMS; |
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110 public String SQL_COLLECTIONS_NEXT_ID; |
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111 public String SQL_COLLECTIONS_INSERT; |
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112 public String SQL_COLLECTIONS_SELECT_USER; |
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113 public String SQL_COLLECTIONS_SELECT_ALL; |
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114 public String SQL_COLLECTIONS_SELECT_GID; |
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115 public String SQL_COLLECTIONS_CREATION_TIME; |
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116 public String SQL_COLLECTIONS_ID_BY_GID; |
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117 public String SQL_DELETE_COLLECTION_ITEMS; |
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118 public String SQL_DELETE_COLLECTION; |
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119 public String SQL_COLLECTION_CHECK_ARTIFACT; |
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120 public String SQL_COLLECTION_ITEMS_ID_NEXTVAL; |
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121 public String SQL_COLLECTION_ITEMS_INSERT; |
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122 public String SQL_COLLECTION_GET_ATTRIBUTE; |
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123 public String SQL_COLLECTION_SET_ATTRIBUTE; |
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124 public String SQL_COLLECTION_ITEM_GET_ATTRIBUTE; |
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125 public String SQL_COLLECTION_ITEM_SET_ATTRIBUTE; |
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126 public String SQL_COLLECTIONS_TOUCH_BY_GID; |
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127 public String SQL_COLLECTION_ITEM_ID_CID_AID; |
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128 public String SQL_COLLECTION_ITEM_OUTDATE_ARTIFACT; |
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129 public String SQL_COLLECTION_ITEM_DELETE; |
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130 public String SQL_COLLECTIONS_TOUCH_BY_ID; |
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131 public String SQL_COLLECTION_ITEMS_LIST_GID; |
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132 public String SQL_ALL_ARTIFACTS; |
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133 |
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134 /** The singleton.*/ |
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135 protected static Backend instance; |
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136 |
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137 protected SQLExecutor sqlExecutor; |
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138 |
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139 protected DBConfig config; |
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140 |
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141 /** |
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142 * The database cleaner. Reference is stored here because |
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143 * the cleaner is woken up if the backend finds an outdated |
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144 * artifact. This artifact should be removed as soon as |
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145 * possible. |
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146 */ |
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147 protected DatabaseCleaner cleaner; |
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148 |
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149 /** |
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150 * To revive an artifact from the bytes coming from the database |
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151 * we need the artifact factory which references the artifact |
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152 * serializer which is able to do the reviving job. |
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153 */ |
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154 protected FactoryLookup factoryLookup; |
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155 |
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156 /** |
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157 * Little helper interface to decouple the ArtifactDatabase |
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158 * from the Backend. A ArtifactDatabase should depend on a |
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159 * Backend but a Backend not from an ArtifactDatabase. |
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160 */ |
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161 public interface FactoryLookup { |
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162 |
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163 /** |
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164 * Returns an ArtifactFactory which is bound to a given name. |
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165 * @param factoryName The name of the artifact factory. |
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166 * @return The ArtifactFactory bound to the factory name or |
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167 * null if not matching factory is found. |
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168 */ |
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169 ArtifactFactory getArtifactFactory(String factoryName); |
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170 |
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171 } // interface FactoryLookup |
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172 |
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173 /** |
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174 * Inner class that brigdes between the persisten form of the |
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175 * artifact and the living one inside the artifact database. |
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176 * After the describe(), feed(), advance() and out() operations |
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177 * of the artifact it must be possible to write to modified artifact |
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178 * back into the database. |
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179 */ |
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180 public final class PersistentArtifact |
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181 { |
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182 private int id; |
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183 private Artifact artifact; |
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184 private ArtifactSerializer serializer; |
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185 private Long ttl; |
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186 |
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187 /** |
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188 * Cronstructor to create a persistent artifact. |
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189 * @param artifact The living artifact. |
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190 * @param serializer The serializer to store the artifact |
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191 * after the operations. |
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192 * @param ttl The time to life of the artifact. |
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193 * @param id The database id of the artifact. |
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194 */ |
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195 public PersistentArtifact( |
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196 Artifact artifact, |
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197 ArtifactSerializer serializer, |
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198 Long ttl, |
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199 int id |
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200 ) { |
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201 this.id = id; |
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202 this.artifact = artifact; |
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203 this.serializer = serializer; |
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204 this.ttl = ttl; |
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205 } |
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206 |
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207 public int getId() { |
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208 return id; |
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209 } |
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210 |
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211 /** |
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212 * Returns the wrapped living artifact. |
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213 * @return the living artifact. |
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214 */ |
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215 public Artifact getArtifact() { |
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216 return artifact; |
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217 } |
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218 |
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219 /** |
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220 * Returns the serialized which is able to write a |
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221 * modified artifact back into the database. |
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222 * @return The serializer. |
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223 */ |
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224 public ArtifactSerializer getSerializer() { |
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225 return serializer; |
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226 } |
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227 |
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228 /** |
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229 * The time to life of the artifact. |
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230 * @return The time to live. |
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231 */ |
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232 public Long getTTL() { |
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233 return ttl; |
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234 } |
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235 |
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236 /** |
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237 * Stores the living artifact back into the database. |
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238 */ |
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239 public void store() { |
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240 if (logger.isDebugEnabled()) { |
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241 logger.debug("storing artifact id = " + getId()); |
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242 } |
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243 Backend.this.store(this); |
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244 } |
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245 |
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246 /** |
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247 * Only touches the access time of the artifact. |
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248 */ |
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249 public void touch() { |
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250 if (logger.isDebugEnabled()) { |
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251 logger.debug("touching artifact id = " + getId()); |
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252 } |
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253 Backend.this.touch(this); |
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254 } |
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255 } // class ArtifactWithId |
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256 |
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257 /** |
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258 * Default constructor |
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259 */ |
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260 public Backend() { |
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261 } |
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262 |
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263 public Backend(DBConfig config) { |
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264 this.config = config; |
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265 sqlExecutor = new SQLExecutor(config.getDBConnection()); |
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266 setupSQL(config.getSQL()); |
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267 } |
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268 |
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269 /** |
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270 * Constructor to create a backend with a link to the database cleaner. |
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271 * @param cleaner The clean which periodically removes outdated |
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272 * artifacts from the database. |
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273 */ |
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274 public Backend(DBConfig config, DatabaseCleaner cleaner) { |
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275 this(config); |
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276 this.cleaner = cleaner; |
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277 } |
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278 |
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279 public DBConfig getConfig() { |
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280 return config; |
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281 } |
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282 |
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283 /** |
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284 * Returns the singleton of this Backend. |
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285 * |
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286 * @return the backend. |
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287 */ |
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288 public static synchronized Backend getInstance() { |
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289 if (instance == null) { |
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290 instance = new Backend(DBConfig.getInstance()); |
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291 } |
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292 |
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293 return instance; |
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294 } |
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295 |
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296 protected void setupSQL(SQL sql) { |
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297 SQL_NEXT_ID = sql.get("artifacts.id.nextval"); |
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298 SQL_INSERT = sql.get("artifacts.insert"); |
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299 SQL_UPDATE = sql.get("artifacts.update"); |
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300 SQL_TOUCH = sql.get("artifacts.touch"); |
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301 SQL_LOAD_BY_GID = sql.get("artifacts.select.gid"); |
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302 SQL_GET_ID = sql.get("artifacts.get.id"); |
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303 SQL_REPLACE = sql.get("artifacts.replace"); |
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304 SQL_USERS_NEXT_ID = sql.get("users.id.nextval"); |
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305 SQL_USERS_INSERT = sql.get("users.insert"); |
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306 SQL_USERS_SELECT_ID_BY_GID = sql.get("users.select.id.by.gid"); |
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307 SQL_USERS_SELECT_GID = sql.get("users.select.gid"); |
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308 SQL_USERS_DELETE_ID = sql.get("users.delete.id"); |
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309 SQL_USERS_DELETE_COLLECTIONS = sql.get("users.delete.collections"); |
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310 SQL_USERS_SELECT_ALL = sql.get("users.select.all"); |
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311 SQL_USERS_COLLECTIONS = sql.get("users.collections"); |
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312 SQL_USERS_COLLECTION_IDS = sql.get("users.collection.ids"); |
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313 SQL_USERS_DELETE_ALL_COLLECTIONS = |
307
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314 sql.get("users.delete.collections"); |
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315 SQL_ARTIFACTS_IN_ONLY_COLLECTION_ONLY = |
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316 sql.get("artifacts.in.one.collection.only"); |
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317 SQL_OUTDATE_ARTIFACTS_COLLECTION = |
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318 sql.get("outdate.artifacts.collection"); |
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319 SQL_UPDATE_COLLECTION_TTL = sql.get("collections.update.ttl"); |
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320 SQL_UPDATE_COLLECTION_NAME = sql.get("collections.update.name"); |
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321 SQL_OUTDATE_ARTIFACTS_USER = sql.get("outdate.artifacts.user"); |
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322 SQL_DELETE_USER_COLLECTION_ITEMS = |
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323 sql.get("delete.user.collection.items"); |
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324 SQL_COLLECTIONS_NEXT_ID = sql.get("collections.id.nextval"); |
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325 SQL_COLLECTIONS_INSERT = sql.get("collections.insert"); |
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326 SQL_COLLECTIONS_SELECT_USER = sql.get("collections.select.user"); |
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327 SQL_COLLECTIONS_SELECT_ALL = sql.get("collections.select.all"); |
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328 SQL_COLLECTIONS_SELECT_GID = sql.get("collections.select.by.gid"); |
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329 SQL_COLLECTIONS_CREATION_TIME = sql.get("collection.creation.time"); |
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330 SQL_COLLECTIONS_ID_BY_GID = sql.get("collections.id.by.gid"); |
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331 SQL_DELETE_COLLECTION_ITEMS = sql.get("delete.collection.items"); |
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332 SQL_DELETE_COLLECTION = sql.get("delete.collection"); |
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333 SQL_COLLECTION_CHECK_ARTIFACT = sql.get("collection.check.artifact"); |
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334 SQL_COLLECTION_ITEMS_ID_NEXTVAL = |
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335 sql.get("collection.items.id.nextval"); |
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336 SQL_COLLECTION_ITEMS_INSERT = sql.get("collection.items.insert"); |
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337 SQL_COLLECTION_GET_ATTRIBUTE = sql.get("collection.get.attribute"); |
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338 SQL_COLLECTION_SET_ATTRIBUTE = sql.get("collection.set.attribute"); |
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339 SQL_COLLECTION_ITEM_GET_ATTRIBUTE = |
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340 sql.get("collection.item.get.attribute"); |
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341 SQL_COLLECTION_ITEM_SET_ATTRIBUTE = |
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342 sql.get("collection.item.set.attribute"); |
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343 SQL_COLLECTIONS_TOUCH_BY_GID = sql.get("collections.touch.by.gid"); |
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344 SQL_COLLECTION_ITEM_ID_CID_AID = sql.get("collection.item.id.cid.aid"); |
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345 SQL_COLLECTION_ITEM_OUTDATE_ARTIFACT = |
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346 sql.get("collection.item.outdate.artifact"); |
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347 SQL_COLLECTION_ITEM_DELETE = sql.get("collection.item.delete"); |
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348 SQL_COLLECTIONS_TOUCH_BY_ID = sql.get("collections.touch.by.id"); |
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349 SQL_COLLECTION_ITEMS_LIST_GID = sql.get("collection.items.list.gid"); |
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350 SQL_ALL_ARTIFACTS = sql.get("all.artifacts"); |
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351 } |
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352 |
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353 /** |
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354 * Sets the factory lookup mechanism to decouple ArtifactDatabase |
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355 * and Backend. |
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356 * @param factoryLookup |
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357 */ |
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358 public void setFactoryLookup(FactoryLookup factoryLookup) { |
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359 this.factoryLookup = factoryLookup; |
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360 } |
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361 |
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362 /** |
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363 * Sets the database cleaner explicitly. |
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364 * @param cleaner The database cleaner |
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365 */ |
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366 public void setCleaner(DatabaseCleaner cleaner) { |
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367 this.cleaner = cleaner; |
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368 } |
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369 |
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370 /** |
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371 * Returns a new unique identifier to external identify |
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372 * the artifact across the system. This implementation |
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373 * uses random UUIDs v4 to achieve this target. |
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374 * @return the new identifier |
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375 */ |
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376 public String newIdentifier() { |
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377 // TODO: check database for collisions. |
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378 return StringUtils.newUUID(); |
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379 } |
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380 |
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381 public boolean isValidIdentifier(String identifier) { |
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382 return StringUtils.checkUUID(identifier); |
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383 } |
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384 |
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385 /** |
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386 * Stores a new artifact into the database. |
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387 * @param artifact The artifact to be stored |
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388 * @param factory The factory which build the artifact |
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389 * @param ttl The initial time to life of the artifact. |
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390 * @return A persistent wrapper around the living |
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391 * artifact to be able to write modification later. |
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392 * @throws Exception Thrown if something went wrong with the |
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393 * storage process. |
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394 */ |
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395 public PersistentArtifact storeInitially( |
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396 Artifact artifact, |
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397 ArtifactFactory factory, |
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398 Long ttl |
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399 ) |
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400 throws Exception |
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401 { |
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402 return new PersistentArtifact( |
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403 artifact, |
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404 factory.getSerializer(), |
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405 ttl, |
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406 insertDatabase(artifact, factory, ttl)); |
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407 } |
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408 |
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409 /** |
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410 * Stores an artifact into database if it does not exist there. |
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411 * If it exists there it is only updated. |
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412 * @param artifact The artifact to store/update. |
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413 * @param factory The factory which created the artifact. |
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414 * @param ttl The initial time to live of the artifact. |
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415 * @return A persistent version of the artifact to be able |
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416 * to store a modification later. |
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417 * @throws Exception Thrown if something went wrong during |
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418 * storing/updating. |
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419 */ |
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420 public PersistentArtifact storeOrReplace( |
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421 Artifact artifact, |
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422 ArtifactFactory factory, |
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423 Long ttl |
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424 ) |
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425 throws Exception |
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426 { |
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427 return new PersistentArtifact( |
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428 artifact, |
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429 factory.getSerializer(), |
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430 ttl, |
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431 storeOrReplaceDatabase(artifact, factory, ttl)); |
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432 } |
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433 |
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434 /** |
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435 * Implementors of this interface are able to process the raw |
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436 * artifact data from the database for loading. |
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437 */ |
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438 public interface ArtifactLoader { |
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439 |
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440 /** |
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441 * Creates a custom object from the raw artifact database data. |
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442 * @param factory The factory that created this artifact. |
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443 * @param ttl The current time to life of the artifact. |
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444 * @param bytes The raw artifact bytes from the database. |
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445 * @param id The database id of the artifact. |
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446 * @return The custom object created by the implementation. |
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447 */ |
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448 Object load(ArtifactFactory factory, Long ttl, byte [] bytes, int id); |
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449 |
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450 } // interface ArtifactLoader |
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451 |
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452 /** |
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453 * Fetches an artifact from the database identified by the |
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454 * given identifier. |
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455 * @param identifer The identifier of the artifact. |
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456 * @return A persistent wrapper around the found artifact |
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457 * to be able to write back a modifaction later or null |
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458 * if no artifact is found for this identifier. |
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459 */ |
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460 public PersistentArtifact getArtifact(String identifer) { |
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461 |
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462 return (PersistentArtifact)loadArtifact( |
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463 identifer, |
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464 new ArtifactLoader() { |
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465 |
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466 public Object load( |
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467 ArtifactFactory factory, |
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468 Long ttl, |
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469 byte [] bytes, |
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470 int id |
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471 ) { |
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472 ArtifactSerializer serializer = factory.getSerializer(); |
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473 |
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474 Artifact artifact = serializer.fromBytes(bytes); |
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475 |
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476 return artifact == null |
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477 ? null |
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478 : new PersistentArtifact(artifact, serializer, ttl, id); |
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479 } |
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480 }); |
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481 } |
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482 |
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483 /** |
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484 * More general loading mechanism for artifacts. The concrete |
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485 * load processing is delegated to the given loader. |
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486 * @param identifer The identifier of the artifact. |
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487 * @param loader The loader which processes the raw database data. |
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488 * @return The object created by the loader. |
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489 */ |
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490 public Object loadArtifact( |
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491 final String identifer, |
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492 final ArtifactLoader loader |
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493 ) { |
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494 if (!isValidIdentifier(identifer)) { |
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495 return null; |
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496 } |
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497 |
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498 if (factoryLookup == null) { |
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499 logger.error("factory lookup == null"); |
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500 return false; |
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501 } |
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502 |
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503 final Object [] loaded = new Object[1]; |
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504 |
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505 SQLExecutor.Instance exec = sqlExecutor.new Instance() { |
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506 public boolean doIt() throws SQLException { |
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507 prepareStatement(SQL_LOAD_BY_GID); |
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508 stmnt.setString(1, identifer); |
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509 |
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510 result = stmnt.executeQuery(); |
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511 |
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512 if (!result.next()) { |
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513 return false; |
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514 } |
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515 |
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516 int id = result.getInt(1); |
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517 long ttlX = result.getLong(2); |
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518 Long ttl = result.wasNull() ? null : ttlX; |
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519 |
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520 String factoryName = result.getString(3); |
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521 |
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522 ArtifactFactory factory = factoryLookup |
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523 .getArtifactFactory(factoryName); |
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524 |
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525 if (factory == null) { |
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526 logger.error("factory '" + factoryName + "' not found"); |
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527 return false; |
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528 } |
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529 |
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530 byte [] bytes = result.getBytes(4); |
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531 |
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532 loaded[0] = loader.load(factory, ttl, bytes, id); |
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533 return true; |
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534 } |
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535 }; |
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536 |
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537 return exec.runRead() ? loaded[0] : null; |
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538 } |
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539 |
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540 /** |
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541 * Called if the load mechanism found an outdated artifact. |
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542 * It wakes up the database cleaner. |
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543 * @param id The id of the outdated artifact. |
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544 */ |
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545 protected void artifactOutdated(int id) { |
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546 if (logger.isDebugEnabled()) { |
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547 logger.info("artifactOutdated: id = " + id); |
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548 } |
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549 if (cleaner != null) { |
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550 cleaner.wakeup(); |
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551 } |
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552 } |
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553 |
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554 public Artifact reviveArtifact(String factoryName, byte [] bytes) { |
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555 if (factoryLookup == null) { |
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556 logger.error("reviveArtifact: factory lookup == null"); |
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557 return null; |
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558 } |
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559 ArtifactFactory factory = factoryLookup |
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560 .getArtifactFactory(factoryName); |
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561 |
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562 if (factory == null) { |
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563 logger.error( |
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564 "reviveArtifact: no factory '" + factoryName + "' found"); |
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565 return null; |
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566 } |
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567 |
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568 ArtifactSerializer serializer = factory.getSerializer(); |
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569 |
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570 return serializer.fromBytes(bytes); |
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571 } |
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572 |
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573 /** |
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574 * Internal method to store/replace an artifact inside the database. |
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575 * If an artifact with the given identifier does not exists it is |
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576 * created else only the content data is updated. |
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577 * @param artifact The artifact to be store/update inside the database. |
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578 * @param factory The factory that created the artifact. |
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579 * @param ttl The initial time to life of the artifact. |
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580 * @return The database id of the stored/updated artifact. |
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581 */ |
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582 protected int storeOrReplaceDatabase( |
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583 final Artifact artifact, |
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584 final ArtifactFactory factory, |
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585 final Long ttl |
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586 ) { |
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587 final String uuid = artifact.identifier(); |
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588 |
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589 if (!isValidIdentifier(uuid)) { |
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590 throw new RuntimeException("No valid UUID"); |
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591 } |
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592 |
174
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593 final int [] id = new int[1]; |
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594 |
305
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595 SQLExecutor.Instance exec = sqlExecutor.new Instance() { |
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596 public boolean doIt() throws SQLException { |
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597 |
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598 prepareStatement(SQL_GET_ID); |
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599 stmnt.setString(1, uuid); |
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600 result = stmnt.executeQuery(); |
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601 |
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602 Integer ID = result.next() |
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603 ? Integer.valueOf(result.getInt(1)) |
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604 : null; |
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605 |
174
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606 reset(); |
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607 |
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608 if (ID != null) { // already in database |
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609 prepareStatement(SQL_REPLACE); |
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610 |
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611 if (ttl == null) { |
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612 stmnt.setNull(1, Types.BIGINT); |
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613 } |
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614 else { |
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615 stmnt.setLong(1, ttl.longValue()); |
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616 } |
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617 |
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618 stmnt.setString(2, factory.getName()); |
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619 stmnt.setBytes( |
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620 3, |
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621 factory.getSerializer().toBytes(artifact)); |
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622 id[0] = ID.intValue(); |
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623 stmnt.setInt(4, id[0]); |
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624 } |
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625 else { // new artifact |
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626 prepareStatement(SQL_NEXT_ID); |
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627 result = stmnt.executeQuery(); |
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628 |
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629 if (!result.next()) { |
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630 logger.error("No id generated"); |
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631 return false; |
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632 } |
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633 |
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634 reset(); |
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635 |
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636 prepareStatement(SQL_INSERT); |
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637 |
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638 id[0] = result.getInt(1); |
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639 stmnt.setInt(1, id[0]); |
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640 stmnt.setString(2, uuid); |
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641 if (ttl == null) { |
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642 stmnt.setNull(3, Types.BIGINT); |
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643 } |
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644 else { |
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645 stmnt.setLong(3, ttl.longValue()); |
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646 } |
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647 |
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648 stmnt.setString(4, factory.getName()); |
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649 |
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650 stmnt.setBytes( |
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651 5, |
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652 factory.getSerializer().toBytes(artifact)); |
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653 } |
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654 stmnt.execute(); |
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655 conn.commit(); |
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656 return true; |
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657 } |
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658 }; |
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659 |
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660 if (!exec.runWrite()) { |
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661 throw new RuntimeException("failed insert artifact into database"); |
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662 } |
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663 |
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664 return id[0]; |
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665 } |
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666 |
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667 /** |
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668 * Internal method to store an artifact inside the database. |
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669 * @param artifact The artifact to be stored. |
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670 * @param factory The factory which created the artifact. |
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671 * @param ttl The initial time to live of the artifact. |
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672 * @return The database id of the stored artifact. |
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673 */ |
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674 protected int insertDatabase( |
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675 final Artifact artifact, |
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676 final ArtifactFactory factory, |
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677 final Long ttl |
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678 ) { |
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679 final int [] id = new int[1]; |
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680 |
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681 SQLExecutor.Instance exec = sqlExecutor.new Instance() { |
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682 public boolean doIt() throws SQLException { |
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683 prepareStatement(SQL_NEXT_ID); |
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684 result = stmnt.executeQuery(); |
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685 |
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686 if (!result.next()) { |
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687 logger.error("No id generated"); |
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688 return false; |
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689 } |
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690 |
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691 id[0] = result.getInt(1); |
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692 |
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693 reset(); |
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694 prepareStatement(SQL_INSERT); |
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695 |
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696 String uuid = artifact.identifier(); |
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697 stmnt.setInt(1, id[0]); |
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698 stmnt.setString(2, uuid); |
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699 if (ttl == null) { |
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700 stmnt.setNull(3, Types.BIGINT); |
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701 } |
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702 else { |
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703 stmnt.setLong(3, ttl.longValue()); |
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704 } |
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705 |
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706 stmnt.setString(4, factory.getName()); |
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707 |
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708 stmnt.setBytes( |
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709 5, |
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710 factory.getSerializer().toBytes(artifact)); |
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711 |
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712 stmnt.execute(); |
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713 |
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714 conn.commit(); |
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715 return true; |
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716 } |
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717 }; |
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718 |
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719 if (!exec.runWrite()) { |
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720 throw new RuntimeException("failed insert artifact into database"); |
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721 } |
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722 |
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723 return id[0]; |
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724 } |
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725 |
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726 /** |
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727 * Touches the access timestamp of a given artifact to prevent |
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728 * that it will be removed from the database by the database cleaner. |
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729 * @param artifact The persistent wrapper around the living artifact. |
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730 */ |
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731 public void touch(final PersistentArtifact artifact) { |
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732 sqlExecutor.new Instance() { |
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733 public boolean doIt() throws SQLException { |
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734 prepareStatement(SQL_TOUCH); |
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735 stmnt.setInt(1, artifact.getId()); |
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736 stmnt.execute(); |
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737 conn.commit(); |
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738 return true; |
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739 } |
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740 }.runWrite(); |
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741 } |
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742 |
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743 /** |
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744 * Writes modification of an artifact back to the database. |
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745 * @param artifact The persistent wrapper around a living |
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746 * artifact. |
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747 */ |
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748 public void store(final PersistentArtifact artifact) { |
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749 sqlExecutor.new Instance() { |
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750 public boolean doIt() throws SQLException { |
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751 prepareStatement(SQL_UPDATE); |
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752 stmnt.setInt(2, artifact.getId()); |
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753 |
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754 byte [] bytes = artifact |
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755 .getSerializer() |
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756 .toBytes(artifact.getArtifact()); |
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757 |
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758 stmnt.setBytes(1, bytes); |
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759 stmnt.execute(); |
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760 conn.commit(); |
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761 return true; |
26
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762 } |
174
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763 }.runWrite(); |
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764 } |
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765 |
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766 public User createUser( |
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767 final String name, |
174
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768 final Document role, |
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769 final UserFactory factory, |
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770 final Object context |
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771 ) { |
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772 final User [] user = new User[1]; |
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773 |
235
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774 final byte [] roleData = XMLUtils.toByteArray(role, true); |
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775 |
305
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776 SQLExecutor.Instance exec = sqlExecutor.new Instance() { |
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777 public boolean doIt() throws SQLException { |
138
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778 |
174
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779 prepareStatement(SQL_USERS_NEXT_ID); |
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780 result = stmnt.executeQuery(); |
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781 |
146
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782 if (!result.next()) { |
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783 return false; |
138
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784 } |
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785 |
145
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786 int id = result.getInt(1); |
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787 |
174
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788 reset(); |
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789 |
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790 String identifier = newIdentifier(); |
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791 |
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792 prepareStatement(SQL_USERS_INSERT); |
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793 |
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794 stmnt.setInt(1, id); |
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795 stmnt.setString(2, identifier); |
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796 stmnt.setString(3, name); |
138
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797 |
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798 if (roleData == null) { |
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799 stmnt.setNull(4, Types.BIGINT); |
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800 } |
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801 else { |
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802 stmnt.setBytes(4, roleData); |
138
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803 } |
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804 |
174
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805 stmnt.execute(); |
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806 conn.commit(); |
138
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807 |
174
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808 user[0] = factory.createUser( |
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809 identifier, name, role, context); |
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810 return true; |
138
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811 } |
174
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812 }; |
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813 |
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814 return exec.runWrite() ? user[0] : null; |
133
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815 } |
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|
816 |
174
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817 public boolean deleteUser(final String identifier) { |
144
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818 |
177
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Backend: isIdentifierValid more symmetric to new newIndentifier
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|
819 if (!isValidIdentifier(identifier)) { |
154
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|
820 return false; |
147
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821 } |
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822 |
305
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|
823 SQLExecutor.Instance exec = sqlExecutor.new Instance() { |
174
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824 public boolean doIt() throws SQLException { |
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825 prepareStatement(SQL_USERS_SELECT_ID_BY_GID); |
144
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826 |
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827 stmnt.setString(1, identifier); |
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828 result = stmnt.executeQuery(); |
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829 |
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830 if (!result.next()) { // No such user |
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|
831 return false; |
144
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|
832 } |
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|
833 |
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834 int id = result.getInt(1); |
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835 |
174
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|
836 reset(); |
144
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|
837 |
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838 // outdate the artifacts exclusively used by the user |
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839 |
174
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|
840 prepareStatement(SQL_OUTDATE_ARTIFACTS_USER); |
144
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841 stmnt.setInt(1, id); |
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|
842 stmnt.setInt(2, id); |
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|
843 stmnt.execute(); |
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|
844 |
174
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|
845 reset(); |
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|
846 |
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847 // delete the collection items of the user |
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848 |
174
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|
849 prepareStatement(SQL_DELETE_USER_COLLECTION_ITEMS); |
144
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850 stmnt.setInt(1, id); |
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|
851 stmnt.execute(); |
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|
852 |
174
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|
853 reset(); |
144
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|
854 |
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855 // delete the collections of the user |
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856 |
174
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|
857 prepareStatement(SQL_USERS_DELETE_COLLECTIONS); |
144
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858 stmnt.setInt(1, id); |
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|
859 stmnt.execute(); |
174
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|
860 |
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|
861 reset(); |
144
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|
862 |
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|
863 // delete the user |
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|
864 |
174
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|
865 prepareStatement(SQL_USERS_DELETE_ID); |
144
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866 stmnt.setInt(1, id); |
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|
867 stmnt.execute(); |
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|
868 |
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|
869 conn.commit(); |
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|
870 return true; |
144
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|
871 } |
174
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872 }; |
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873 |
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874 return exec.runWrite(); |
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|
875 } |
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|
876 |
157
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|
877 public User getUser( |
233
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878 final String identifier, |
174
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879 final UserFactory factory, |
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880 final Object context |
157
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881 ) { |
177
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|
882 if (!isValidIdentifier(identifier)) { |
147
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883 logger.debug("Invalid UUID: '" + identifier + "'"); |
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|
884 return null; |
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diff
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|
885 } |
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diff
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|
886 |
174
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887 final User [] user = new User[1]; |
147
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888 |
305
f33401ea2a6c
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diff
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|
889 SQLExecutor.Instance exec = sqlExecutor.new Instance() { |
174
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890 public boolean doIt() throws SQLException { |
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891 prepareStatement(SQL_USERS_SELECT_GID); |
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892 stmnt.setString(1, identifier); |
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893 result = stmnt.executeQuery(); |
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894 if (!result.next()) { // no such user |
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895 return false; |
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896 } |
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897 // omit id |
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898 String name = result.getString(2); |
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|
899 byte [] roleData = result.getBytes(3); |
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900 |
235
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901 Document role = XMLUtils.fromByteArray(roleData, true); |
174
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|
902 |
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|
903 user[0] = factory.createUser( |
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|
904 identifier, name, role, context); |
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|
905 return true; |
147
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|
906 } |
174
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|
907 }; |
147
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diff
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|
908 |
174
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|
909 return exec.runRead() ? user[0] : null; |
133
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diff
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|
910 } |
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diff
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|
911 |
174
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|
912 public User [] getUsers( |
233
16cd059945e5
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diff
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|
913 final UserFactory factory, |
174
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|
914 final Object context |
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|
915 ) { |
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diff
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|
916 final ArrayList<User> users = new ArrayList<User>(); |
148
101a52d3ad08
Added code to load all users from database.
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147
diff
changeset
|
917 |
305
f33401ea2a6c
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
303
diff
changeset
|
918 SQLExecutor.Instance exec = sqlExecutor.new Instance() { |
174
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diff
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|
919 public boolean doIt() throws SQLException { |
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|
920 prepareStatement(SQL_USERS_SELECT_ALL); |
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diff
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|
921 result = stmnt.executeQuery(); |
148
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147
diff
changeset
|
922 |
174
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diff
changeset
|
923 while (result.next()) { |
25d472a67a9f
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diff
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|
924 // omit id |
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|
925 String identifier = result.getString(2); |
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diff
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|
926 String name = result.getString(3); |
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parents:
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diff
changeset
|
927 byte [] roleData = result.getBytes(4); |
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parents:
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diff
changeset
|
928 |
235
3e29395ebac6
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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diff
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|
929 Document role = XMLUtils.fromByteArray(roleData, true); |
174
25d472a67a9f
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diff
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|
930 User user = factory.createUser( |
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diff
changeset
|
931 identifier, name, role, context); |
25d472a67a9f
Reduce the code repetition and the complexity of the backend.
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diff
changeset
|
932 users.add(user); |
25d472a67a9f
Reduce the code repetition and the complexity of the backend.
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diff
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|
933 } |
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diff
changeset
|
934 return true; |
148
101a52d3ad08
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
147
diff
changeset
|
935 } |
174
25d472a67a9f
Reduce the code repetition and the complexity of the backend.
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diff
changeset
|
936 }; |
148
101a52d3ad08
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parents:
147
diff
changeset
|
937 |
174
25d472a67a9f
Reduce the code repetition and the complexity of the backend.
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diff
changeset
|
938 return exec.runRead() |
25d472a67a9f
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diff
changeset
|
939 ? users.toArray(new User[users.size()]) |
25d472a67a9f
Reduce the code repetition and the complexity of the backend.
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diff
changeset
|
940 : null; |
133
2950c6011afa
Fixed typo in keys.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
128
diff
changeset
|
941 } |
156
a76de72ad6d1
Added stubs for the collection handling in db backend.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
154
diff
changeset
|
942 |
159
db0d20440b92
Added code to create collections.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
158
diff
changeset
|
943 public ArtifactCollection createCollection( |
233
16cd059945e5
Removed trailing whitespace.
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parents:
230
diff
changeset
|
944 final String ownerIdentifier, |
174
25d472a67a9f
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diff
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|
945 final String name, |
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Reduce the code repetition and the complexity of the backend.
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parents:
170
diff
changeset
|
946 final ArtifactCollectionFactory factory, |
199
face2302387c
Insert collection attribute into database, too.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
194
diff
changeset
|
947 final Document attribute, |
174
25d472a67a9f
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diff
changeset
|
948 final Object context |
159
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diff
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|
949 ) { |
db0d20440b92
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diff
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|
950 if (name == null) { |
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diff
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|
951 logger.debug("Name is null"); |
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diff
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|
952 return null; |
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diff
changeset
|
953 } |
db0d20440b92
Added code to create collections.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
158
diff
changeset
|
954 |
177
77cd37a93fca
Backend: isIdentifierValid more symmetric to new newIndentifier
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parents:
176
diff
changeset
|
955 if (!isValidIdentifier(ownerIdentifier)) { |
159
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diff
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|
956 logger.debug("Invalid owner id: '" + ownerIdentifier + "'"); |
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158
diff
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|
957 return null; |
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diff
changeset
|
958 } |
db0d20440b92
Added code to create collections.
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158
diff
changeset
|
959 |
235
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|
960 final ArtifactCollection [] collection = new ArtifactCollection[1]; |
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|
961 |
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|
962 final byte [] data = XMLUtils.toByteArray(attribute, true); |
159
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diff
changeset
|
963 |
305
f33401ea2a6c
Artifact database: Refactorized the usage of dialect independent SQL to be reusable.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
303
diff
changeset
|
964 SQLExecutor.Instance exec = sqlExecutor.new Instance() { |
174
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|
965 public boolean doIt() throws SQLException { |
159
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diff
changeset
|
966 // fetch owner id |
174
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|
967 prepareStatement(SQL_USERS_SELECT_ID_BY_GID); |
159
db0d20440b92
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|
968 stmnt.setString(1, ownerIdentifier); |
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|
969 result = stmnt.executeQuery(); |
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|
970 |
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|
971 if (!result.next()) { // no such user |
174
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|
972 return false; |
159
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diff
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|
973 } |
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diff
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|
974 |
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changeset
|
975 int ownerId = result.getInt(1); |
174
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|
976 reset(); |
159
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diff
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|
977 |
db0d20440b92
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diff
changeset
|
978 // fetch new collection seq number. |
174
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diff
changeset
|
979 prepareStatement(SQL_COLLECTIONS_NEXT_ID); |
159
db0d20440b92
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|
980 result = stmnt.executeQuery(); |
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changeset
|
981 |
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982 if (!result.next()) { // no identifier generated |
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983 return false; |
159
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984 } |
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985 |
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986 int id = result.getInt(1); |
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987 reset(); |
159
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988 |
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989 String identifier = newIdentifier(); |
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990 |
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991 prepareStatement(SQL_COLLECTIONS_INSERT); |
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992 |
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993 stmnt.setInt(1, id); |
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994 stmnt.setString(2, identifier); |
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995 stmnt.setString(3, name); |
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996 stmnt.setInt(4, ownerId); |
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997 |
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998 // XXX: A bit odd: we don't have a collection, yet. |
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999 Long ttl = factory.timeToLiveUntouched(null, context); |
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1000 |
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1001 if (ttl == null) { |
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1002 stmnt.setNull(5, Types.BIGINT); |
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1003 } |
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1004 else { |
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1005 stmnt.setLong(5, ttl); |
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1006 } |
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1007 |
199
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1008 if (data == null) { |
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1009 stmnt.setNull(6, Types.BINARY); |
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1010 } |
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1011 else { |
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1012 stmnt.setBytes(6, data); |
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1013 } |
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1014 |
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1015 stmnt.execute(); |
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1016 conn.commit(); |
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1017 |
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1018 reset(); |
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1019 |
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1020 // fetch creation time from database |
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1021 // done this way to use the time system |
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1022 // of the database. |
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1023 |
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1024 prepareStatement(SQL_COLLECTIONS_CREATION_TIME); |
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1025 stmnt.setInt(1, id); |
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1026 |
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1027 result = stmnt.executeQuery(); |
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1028 |
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1029 Date creationTime = null; |
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1030 |
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1031 if (result.next()) { |
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1032 Timestamp timestamp = result.getTimestamp(1); |
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1033 creationTime = new Date(timestamp.getTime()); |
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1034 } |
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1035 |
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1036 collection[0] = factory.createCollection( |
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1037 identifier, name, creationTime, ttl, attribute, context); |
174
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1038 |
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1039 return true; |
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1040 } |
174
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1041 }; |
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1042 |
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1043 return exec.runWrite() ? collection[0]: null; |
156
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1044 } |
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1045 |
217
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|
1046 public ArtifactCollection getCollection( |
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1047 final String collectionId, |
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1048 final ArtifactCollectionFactory collectionFactory, |
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1049 final UserFactory userFactory, |
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1050 final Object context |
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|
1051 ) { |
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1052 if (!isValidIdentifier(collectionId)) { |
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|
1053 logger.debug("collection id is not valid: " + collectionId); |
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|
1054 return null; |
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1055 } |
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1056 |
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|
1057 final ArtifactCollection[] ac = new ArtifactCollection[1]; |
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1058 |
305
f33401ea2a6c
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|
1059 SQLExecutor.Instance exec = sqlExecutor.new Instance() { |
217
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|
1060 public boolean doIt() throws SQLException { |
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1061 |
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|
1062 prepareStatement(SQL_COLLECTIONS_SELECT_GID); |
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|
1063 stmnt.setString(1, collectionId); |
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1064 |
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1065 result = stmnt.executeQuery(); |
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|
1066 if (!result.next()) { |
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|
1067 logger.debug("No such collection"); |
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|
1068 return false; |
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|
1069 } |
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|
1070 |
235
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1071 String collectionName = result.getString(2); |
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|
1072 String ownerId = result.getString(3); |
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1073 Date creationTime = |
217
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|
1074 new Date(result.getTimestamp(4).getTime()); |
235
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|
1075 Date lastAccess = |
217
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|
1076 new Date(result.getTimestamp(5).getTime()); |
235
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|
1077 Document attr = |
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|
1078 XMLUtils.fromByteArray(result.getBytes(6), true); |
281
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|
1079 long ttl = result.getLong(7); |
217
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|
1080 |
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|
1081 ArtifactCollection collection = |
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|
1082 collectionFactory.createCollection( |
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|
1083 collectionId, |
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|
1084 collectionName, |
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|
1085 creationTime, |
281
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|
1086 ttl, |
217
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|
1087 attr, |
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|
1088 context); |
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|
1089 |
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|
1090 if (ownerId != null) { |
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1091 collection.setUser(new LazyBackendUser( |
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1092 ownerId, userFactory, Backend.this, context)); |
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1093 } |
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1094 |
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1095 ac[0] = collection; |
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1096 |
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1097 return true; |
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1098 } |
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1099 }; |
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1100 |
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1101 return exec.runRead() ? ac[0] : null; |
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1102 } |
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1103 |
164
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1104 public ArtifactCollection [] listCollections( |
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1105 final String ownerIdentifier, |
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1106 final Document data, |
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1107 final ArtifactCollectionFactory collectionFactory, |
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1108 final UserFactory userFactory, |
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1109 final Object context |
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1110 ) { |
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1111 if (ownerIdentifier != null |
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1112 && !isValidIdentifier(ownerIdentifier)) { |
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1113 logger.debug("Invalid owner id: '" + ownerIdentifier + "'"); |
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1114 return null; |
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1115 } |
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1116 |
174
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1117 final ArrayList<ArtifactCollection> collections = |
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1118 new ArrayList<ArtifactCollection>(); |
167
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1119 |
305
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1120 SQLExecutor.Instance exec = sqlExecutor.new Instance() { |
167
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1121 |
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1122 public boolean doIt() throws SQLException { |
167
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1123 |
174
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1124 if (ownerIdentifier != null) { |
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1125 prepareStatement(SQL_COLLECTIONS_SELECT_USER); |
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1126 stmnt.setString(1, ownerIdentifier); |
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1127 } |
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1128 else { |
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1129 prepareStatement(SQL_COLLECTIONS_SELECT_ALL); |
167
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1130 } |
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|
1131 |
174
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1132 result = stmnt.executeQuery(); |
167
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1133 |
235
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1134 HashMap<String, LazyBackendUser> users = |
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1135 new HashMap<String, LazyBackendUser>(); |
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1136 |
174
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|
1137 while (result.next()) { |
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1138 String collectionIdentifier = result.getString(1); |
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|
1139 String collectionName = result.getString(2); |
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|
1140 Date creationTime = |
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|
1141 new Date(result.getTimestamp(3).getTime()); |
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|
1142 String userIdentifier = result.getString(4); |
281
942a54670a72
Made the TTL of a Collection retrievable via getter method.
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diff
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|
1143 long ttl = result.getLong(5); |
174
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|
1144 |
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|
1145 ArtifactCollection collection = |
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diff
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|
1146 collectionFactory.createCollection( |
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diff
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|
1147 collectionIdentifier, |
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diff
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|
1148 collectionName, |
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diff
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|
1149 creationTime, |
281
942a54670a72
Made the TTL of a Collection retrievable via getter method.
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275
diff
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|
1150 ttl, |
174
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diff
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|
1151 data, |
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diff
changeset
|
1152 context); |
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Reduce the code repetition and the complexity of the backend.
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diff
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|
1153 |
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170
diff
changeset
|
1154 if (userIdentifier != null) { |
235
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diff
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|
1155 LazyBackendUser user = users.get(userIdentifier); |
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diff
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|
1156 if (user == null) { |
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diff
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|
1157 user = new LazyBackendUser( |
3e29395ebac6
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diff
changeset
|
1158 userIdentifier, userFactory, |
3e29395ebac6
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diff
changeset
|
1159 Backend.this, context); |
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|
1160 users.put(userIdentifier, user); |
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diff
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|
1161 } |
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|
1162 collection.setUser(user); |
174
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|
1163 } |
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|
1164 |
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|
1165 collections.add(collection); |
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|
1166 } |
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|
1167 return true; |
167
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|
1168 } |
174
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|
1169 }; |
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|
1170 |
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|
1171 return exec.runRead() |
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|
1172 ? collections.toArray(new ArtifactCollection[collections.size()]) |
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|
1173 : null; |
156
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|
1174 } |
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|
1175 |
174
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|
1176 |
175
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|
1177 public boolean deleteCollection(final String collectionId) { |
177
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|
1178 if (!isValidIdentifier(collectionId)) { |
175
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|
1179 logger.debug("Invalid collection id: '" + collectionId + "'"); |
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|
1180 return false; |
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|
1181 } |
305
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|
1182 SQLExecutor.Instance exec = sqlExecutor.new Instance() { |
175
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|
1183 public boolean doIt() throws SQLException { |
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1184 // fetch collection id |
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|
1185 prepareStatement(SQL_COLLECTIONS_ID_BY_GID); |
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1186 stmnt.setString(1, collectionId); |
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|
1187 result = stmnt.executeQuery(); |
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|
1188 if (!result.next()) { |
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|
1189 logger.debug("No such collection: " + collectionId); |
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|
1190 return false; |
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1191 } |
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|
1192 int id = result.getInt(1); |
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|
1193 reset(); |
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|
1194 |
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|
1195 // outdate artifacts that are only in this collection |
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|
1196 prepareStatement(SQL_OUTDATE_ARTIFACTS_COLLECTION); |
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|
1197 stmnt.setInt(1, id); |
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1198 stmnt.setInt(2, id); |
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1199 stmnt.execute(); |
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1200 reset(); |
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1201 |
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1202 // delete the collection items |
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1203 prepareStatement(SQL_DELETE_COLLECTION_ITEMS); |
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1204 stmnt.setInt(1, id); |
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1205 stmnt.execute(); |
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1206 reset(); |
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1207 |
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1208 // delete the collection |
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1209 prepareStatement(SQL_DELETE_COLLECTION); |
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1210 stmnt.setInt(1, id); |
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1211 stmnt.execute(); |
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1212 conn.commit(); |
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1213 return true; |
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1214 } |
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1215 }; |
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1216 return exec.runWrite(); |
156
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1217 } |
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1218 |
253
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1219 public Document getCollectionAttribute(final String collectionId) { |
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1220 if (!isValidIdentifier(collectionId)) { |
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1221 logger.debug("collection id is not valid: " + collectionId); |
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1222 } |
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1223 |
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1224 final byte[][] data = new byte[1][1]; |
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1225 |
305
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1226 SQLExecutor.Instance exec = sqlExecutor.new Instance() { |
253
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1227 public boolean doIt() throws SQLException { |
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1228 prepareStatement(SQL_COLLECTION_GET_ATTRIBUTE); |
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1229 stmnt.setString(1, collectionId); |
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1230 result = stmnt.executeQuery(); |
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1231 if (!result.next()) { |
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1232 logger.debug("No such collection."); |
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1233 return false; |
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1234 } |
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1235 |
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1236 data[0] = result.getBytes(1); |
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1237 return true; |
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1238 } |
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1239 }; |
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1240 |
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1241 return exec.runRead() |
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1242 ? XMLUtils.fromByteArray(data[0], true) |
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1243 : null; |
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1244 } |
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1245 |
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|
1246 public boolean setCollectionAttribute( |
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1247 final String collectionId, |
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1248 Document attribute |
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1249 ) { |
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1250 if (!isValidIdentifier(collectionId)) { |
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|
1251 logger.debug("collection id is not valid: " + collectionId); |
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1252 return false; |
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1253 } |
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1254 |
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|
1255 final byte [] data = XMLUtils.toByteArray(attribute, true); |
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Enabled the artifact database to handle requests specific to collection attributes and collection item attributes.
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1256 |
305
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diff
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|
1257 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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|
1258 public boolean doIt() throws SQLException { |
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Enabled the artifact database to handle requests specific to collection attributes and collection item attributes.
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1259 |
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diff
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|
1260 // 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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diff
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|
1261 prepareStatement(SQL_COLLECTION_SET_ATTRIBUTE); |
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Enabled the artifact database to handle requests specific to collection attributes and collection item attributes.
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|
1262 if (data == null) { |
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|
1263 stmnt.setNull(1, Types.BINARY); |
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|
1264 } |
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Enabled the artifact database to handle requests specific to collection attributes and collection item attributes.
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1265 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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|
1266 stmnt.setBytes(1, data); |
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|
1267 } |
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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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|
1268 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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|
1269 stmnt.execute(); |
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|
1270 reset(); |
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diff
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|
1271 |
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diff
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|
1272 // touch the collection |
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Enabled the artifact database to handle requests specific to collection attributes and collection item attributes.
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|
1273 prepareStatement(SQL_COLLECTIONS_TOUCH_BY_GID); |
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Enabled the artifact database to handle requests specific to collection attributes and collection item attributes.
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|
1274 stmnt.setString(1, collectionId); |
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|
1275 stmnt.execute(); |
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|
1276 |
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|
1277 conn.commit(); |
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|
1278 return true; |
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|
1279 } |
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|
1280 }.runWrite(); |
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|
1281 } |
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diff
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|
1282 |
252
6de74b0b878e
Changed the method names to get and set the attributes of collection items.
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|
1283 public Document getCollectionItemAttribute( |
178
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1284 final String collectionId, |
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1285 final String artifactId |
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1286 ) { |
178
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1287 if (!isValidIdentifier(collectionId)) { |
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1288 logger.debug("collection id is not valid: " + collectionId); |
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1289 return null; |
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1290 } |
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|
1291 if (!isValidIdentifier(artifactId)) { |
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|
1292 logger.debug("artifact id is not valid: " + artifactId); |
179
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diff
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|
1293 return null; |
178
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1294 } |
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1295 |
235
3e29395ebac6
The XML documents stored aside users, collections and collection items are now compressed/decompressed transparently.
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|
1296 final byte [][] data = new byte[1][1]; |
178
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1297 |
305
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|
1298 SQLExecutor.Instance exec = sqlExecutor.new Instance() { |
178
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1299 public boolean doIt() throws SQLException { |
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|
1300 prepareStatement(SQL_COLLECTION_ITEM_GET_ATTRIBUTE); |
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|
1301 stmnt.setString(1, collectionId); |
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|
1302 stmnt.setString(2, artifactId); |
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|
1303 result = stmnt.executeQuery(); |
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|
1304 if (!result.next()) { |
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1305 logger.debug("No such collection item"); |
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1306 return false; |
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1307 } |
235
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1308 data[0] = result.getBytes(1); |
178
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1309 return true; |
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1310 } |
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|
1311 }; |
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1312 |
235
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1313 return exec.runRead() |
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1314 ? XMLUtils.fromByteArray(data[0], true) |
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1315 : null; |
156
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1316 } |
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|
1317 |
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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diff
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|
1318 public boolean setCollectionItemAttribute( |
233
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Removed trailing whitespace.
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diff
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1319 final String collectionId, |
179
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1320 final String artifactId, |
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1321 Document attribute |
156
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1322 ) { |
179
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1323 if (!isValidIdentifier(collectionId)) { |
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1324 logger.debug("collection id is not valid: " + collectionId); |
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1325 return false; |
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1326 } |
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1327 if (!isValidIdentifier(artifactId)) { |
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1328 logger.debug("artifact id is not valid: " + artifactId); |
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1329 return false; |
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1330 } |
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1331 |
235
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1332 final byte [] data = XMLUtils.toByteArray(attribute, true); |
179
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1333 |
305
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1334 return sqlExecutor.new Instance() { |
179
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1335 public boolean doIt() throws SQLException { |
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1336 |
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1337 // set the column in collection items |
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1338 prepareStatement(SQL_COLLECTION_ITEM_SET_ATTRIBUTE); |
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1339 if (data == null) { |
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1340 stmnt.setNull(1, Types.BINARY); |
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1341 } |
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1342 else { |
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|
1343 stmnt.setBytes(1, data); |
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1344 } |
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1345 stmnt.setString(2, collectionId); |
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1346 stmnt.setString(3, artifactId); |
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1347 stmnt.execute(); |
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1348 reset(); |
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|
1349 |
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|
1350 // touch the collection |
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|
1351 prepareStatement(SQL_COLLECTIONS_TOUCH_BY_GID); |
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|
1352 stmnt.setString(1, collectionId); |
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|
1353 stmnt.execute(); |
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|
1354 |
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|
1355 conn.commit(); |
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|
1356 return true; |
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|
1357 } |
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|
1358 }.runWrite(); |
156
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|
1359 } |
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diff
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|
1360 |
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diff
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|
1361 public boolean addCollectionArtifact( |
176
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diff
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|
1362 final String collectionId, |
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|
1363 final String artifactId, |
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diff
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|
1364 final Document attribute |
156
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diff
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|
1365 ) { |
177
77cd37a93fca
Backend: isIdentifierValid more symmetric to new newIndentifier
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176
diff
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|
1366 if (!isValidIdentifier(collectionId)) { |
176
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|
1367 logger.debug("Invalid collection id: '" + collectionId + "'"); |
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1368 return false; |
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|
1369 } |
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|
1370 |
177
77cd37a93fca
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diff
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|
1371 if (!isValidIdentifier(artifactId)) { |
176
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|
1372 logger.debug("Invalid artifact id: '" + artifactId + "'"); |
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1373 return false; |
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|
1374 } |
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|
1375 |
235
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|
1376 final byte [] data = XMLUtils.toByteArray(attribute, true); |
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|
1377 |
305
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diff
changeset
|
1378 SQLExecutor.Instance exec = sqlExecutor.new Instance() { |
176
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|
1379 public boolean doIt() throws SQLException { |
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|
1380 // fetch artifact id |
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|
1381 prepareStatement(SQL_GET_ID); |
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|
1382 stmnt.setString(1, artifactId); |
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1383 result = stmnt.executeQuery(); |
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1384 if (!result.next()) { |
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|
1385 logger.debug("No such artifact: " + artifactId); |
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1386 return false; |
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|
1387 } |
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|
1388 int aid = result.getInt(1); |
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|
1389 reset(); |
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|
1390 |
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|
1391 // fetch collection id |
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|
1392 prepareStatement(SQL_COLLECTIONS_ID_BY_GID); |
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|
1393 stmnt.setString(1, collectionId); |
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|
1394 result = stmnt.executeQuery(); |
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|
1395 if (!result.next()) { |
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|
1396 logger.debug("No such collection: " + collectionId); |
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1397 } |
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|
1398 int cid = result.getInt(1); |
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|
1399 reset(); |
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|
1400 |
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|
1401 // check if artifact is already in collection |
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|
1402 prepareStatement(SQL_COLLECTION_CHECK_ARTIFACT); |
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|
1403 stmnt.setInt(1, aid); |
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|
1404 stmnt.setInt(2, cid); |
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1405 result = stmnt.executeQuery(); |
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1406 if (result.next()) { |
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|
1407 logger.debug("artifact already in collection"); |
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1408 return false; |
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|
1409 } |
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|
1410 reset(); |
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1411 |
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|
1412 // fetch fresh id for new collection item |
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|
1413 prepareStatement(SQL_COLLECTION_ITEMS_ID_NEXTVAL); |
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1414 result = stmnt.executeQuery(); |
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|
1415 if (!result.next()) { |
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1416 logger.debug("no collection item id generated"); |
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|
1417 return false; |
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1418 } |
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|
1419 int ci_id = result.getInt(1); |
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1420 reset(); |
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1421 |
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1422 // insert new collection item |
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|
1423 prepareStatement(SQL_COLLECTION_ITEMS_INSERT); |
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1424 stmnt.setInt(1, ci_id); |
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|
1425 stmnt.setInt(2, cid); |
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|
1426 stmnt.setInt(3, aid); |
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1427 |
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|
1428 if (data == null) { |
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|
1429 stmnt.setNull(4, Types.BINARY); |
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1430 } |
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1431 else { |
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|
1432 stmnt.setBytes(4, data); |
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1433 } |
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|
1434 stmnt.execute(); |
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|
1435 conn.commit(); |
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|
1436 |
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|
1437 return true; |
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1438 } |
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1439 }; |
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|
1440 return exec.runWrite(); |
156
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1441 } |
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1442 |
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|
1443 public boolean removeCollectionArtifact( |
180
38fbbeffe8fe
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|
1444 final String collectionId, |
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|
1445 final String artifactId |
156
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1446 ) { |
180
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|
1447 if (!isValidIdentifier(collectionId)) { |
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|
1448 logger.debug("Invalid collection id: '" + collectionId + "'"); |
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|
1449 return false; |
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1450 } |
305
f33401ea2a6c
Artifact database: Refactorized the usage of dialect independent SQL to be reusable.
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diff
changeset
|
1451 return sqlExecutor.new Instance() { |
180
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1452 public boolean doIt() throws SQLException { |
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1453 |
38fbbeffe8fe
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diff
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|
1454 // fetch id, collection id and artitfact id |
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|
1455 prepareStatement(SQL_COLLECTION_ITEM_ID_CID_AID); |
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|
1456 stmnt.setString(1, collectionId); |
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|
1457 stmnt.setString(2, artifactId); |
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|
1458 result = stmnt.executeQuery(); |
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1459 if (!result.next()) { |
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|
1460 logger.debug("No such collection item"); |
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|
1461 return false; |
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|
1462 } |
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|
1463 int id = result.getInt(1); |
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|
1464 int cid = result.getInt(2); |
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|
1465 int aid = result.getInt(3); |
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|
1466 reset(); |
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|
1467 |
38fbbeffe8fe
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|
1468 // outdate artifact iff it is only in this collection |
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|
1469 prepareStatement(SQL_COLLECTION_ITEM_OUTDATE_ARTIFACT); |
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|
1470 stmnt.setInt(1, aid); |
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|
1471 stmnt.setInt(2, cid); |
194
fde2f193e846
Small typo fix
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diff
changeset
|
1472 stmnt.setInt(3, aid); |
180
38fbbeffe8fe
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|
1473 stmnt.execute(); |
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diff
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|
1474 reset(); |
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|
1475 |
38fbbeffe8fe
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|
1476 // delete collection item |
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|
1477 prepareStatement(SQL_COLLECTION_ITEM_DELETE); |
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Added code to remove an artifact from a collection
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|
1478 stmnt.setInt(1, id); |
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diff
changeset
|
1479 stmnt.execute(); |
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diff
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|
1480 reset(); |
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diff
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|
1481 |
38fbbeffe8fe
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|
1482 // touch collection |
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diff
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|
1483 prepareStatement(SQL_COLLECTIONS_TOUCH_BY_ID); |
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diff
changeset
|
1484 stmnt.setInt(1, cid); |
38fbbeffe8fe
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diff
changeset
|
1485 stmnt.execute(); |
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diff
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|
1486 |
38fbbeffe8fe
Added code to remove an artifact from a collection
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diff
changeset
|
1487 conn.commit(); |
38fbbeffe8fe
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diff
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|
1488 return true; |
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diff
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|
1489 } |
38fbbeffe8fe
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diff
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|
1490 }.runWrite(); |
156
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|
1491 } |
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diff
changeset
|
1492 |
184
a22b7e367b25
Added Backend code to list the collection items in a collection.
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diff
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|
1493 public CollectionItem [] listCollectionArtifacts( |
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diff
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|
1494 final String collectionId |
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diff
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|
1495 ) { |
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diff
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|
1496 if (!isValidIdentifier(collectionId)) { |
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|
1497 logger.debug("Invalid collection id: '" + collectionId + "'"); |
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|
1498 return null; |
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diff
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|
1499 } |
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|
1500 |
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|
1501 final ArrayList<CollectionItem> collectionItems = |
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|
1502 new ArrayList<CollectionItem>(); |
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|
1503 |
305
f33401ea2a6c
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diff
changeset
|
1504 SQLExecutor.Instance exec = sqlExecutor.new Instance() { |
184
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|
1505 public boolean doIt() throws SQLException { |
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|
1506 prepareStatement(SQL_COLLECTION_ITEMS_LIST_GID); |
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|
1507 stmnt.setString(1, collectionId); |
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|
1508 result = stmnt.executeQuery(); |
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|
1509 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
changeset
|
1510 CollectionItem item = new DefaultCollectionItem( |
184
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|
1511 result.getString(1), |
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|
1512 result.getBytes(2)); |
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|
1513 collectionItems.add(item); |
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|
1514 } |
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|
1515 return true; |
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|
1516 } |
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|
1517 }; |
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|
1518 |
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|
1519 return exec.runRead() |
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|
1520 ? collectionItems.toArray( |
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|
1521 new CollectionItem[collectionItems.size()]) |
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|
1522 : null; |
156
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|
1523 } |
273
22a90706d32d
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diff
changeset
|
1524 |
22a90706d32d
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diff
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|
1525 |
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1526 public boolean setCollectionTTL(final String uuid, final Long ttl) { |
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1527 if (!isValidIdentifier(uuid)) { |
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1528 logger.debug("Invalid collection id: '" + uuid + "'"); |
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1529 return false; |
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1530 } |
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1531 |
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1532 return sqlExecutor.new Instance() { |
273
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1533 public boolean doIt() throws SQLException { |
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1534 prepareStatement(SQL_UPDATE_COLLECTION_TTL); |
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1535 if (ttl == null) { |
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1536 stmnt.setNull(1, Types.BIGINT); |
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1537 } |
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1538 else { |
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1539 stmnt.setLong(1, ttl); |
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1540 } |
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1541 stmnt.setString(2, uuid); |
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1542 stmnt.execute(); |
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1543 conn.commit(); |
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1544 |
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1545 return true; |
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1546 } |
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1547 }.runWrite(); |
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1548 } |
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1549 |
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1550 |
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1551 public boolean setCollectionName(final String uuid, final String name) { |
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1552 if (!isValidIdentifier(uuid)) { |
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1553 logger.debug("Invalid collection id: '" + uuid + "'"); |
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1554 return false; |
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1555 } |
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1556 |
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1557 return sqlExecutor.new Instance() { |
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1558 public boolean doIt() throws SQLException { |
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1559 prepareStatement(SQL_UPDATE_COLLECTION_NAME); |
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1560 stmnt.setString(1, name); |
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1561 stmnt.setString(2, uuid); |
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1562 stmnt.execute(); |
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1563 conn.commit(); |
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1564 |
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1565 return true; |
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1566 } |
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1567 }.runWrite(); |
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1568 } |
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1569 |
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1570 public boolean loadAllArtifacts(final ArtifactLoadedCallback alc) { |
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1571 |
308
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|
1572 logger.debug("loadAllArtifacts"); |
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1573 |
303
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1574 if (factoryLookup == null) { |
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|
1575 logger.error("factory lookup == null"); |
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|
1576 return false; |
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|
1577 } |
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|
1578 |
308
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1579 boolean success = sqlExecutor.new Instance() { |
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|
1580 @Override |
303
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1581 public boolean doIt() throws SQLException { |
308
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|
1582 logger.debug("doIt"); |
303
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|
1583 |
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1584 // a little cache to avoid too much deserializations. |
308
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|
1585 LRUCache<String, Artifact> alreadyLoaded = |
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1586 new LRUCache<String, Artifact>(200); |
303
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|
1587 |
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|
1588 prepareStatement(SQL_ALL_ARTIFACTS); |
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|
1589 result = stmnt.executeQuery(); |
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|
1590 while (result.next()) { |
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|
1591 String userId = result.getString(1); |
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|
1592 String collectionId = result.getString(2); |
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|
1593 String artifactId = result.getString(3); |
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|
1594 String factoryName = result.getString(4); |
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|
1595 |
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|
1596 Artifact artifact = alreadyLoaded.get(artifactId); |
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|
1597 |
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|
1598 if (artifact != null) { |
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|
1599 alc.artifactLoaded( |
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|
1600 userId, collectionId, artifactId, artifact); |
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|
1601 continue; |
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|
1602 } |
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|
1603 |
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|
1604 ArtifactFactory factory = factoryLookup |
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|
1605 .getArtifactFactory(factoryName); |
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1606 |
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|
1607 if (factory == null) { |
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|
1608 logger.error("factory '" + factoryName + "' not found"); |
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|
1609 continue; |
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|
1610 } |
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|
1611 |
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|
1612 byte [] bytes = result.getBytes(5); |
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|
1613 |
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|
1614 artifact = factory.getSerializer().fromBytes(bytes); |
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|
1615 |
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|
1616 if (artifact != null) { |
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|
1617 alc.artifactLoaded( |
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|
1618 userId, collectionId, artifactId, artifact); |
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1619 } |
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|
1620 |
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|
1621 alreadyLoaded.put(artifactId, artifact); |
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|
1622 } |
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|
1623 return true; |
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|
1624 } |
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|
1625 }.runRead(); |
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|
1626 |
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|
1627 if (logger.isDebugEnabled()) { |
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|
1628 logger.debug("loadAllArtifacts success: " + success); |
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|
1629 } |
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|
1630 |
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|
1631 return success; |
303
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|
1632 } |
13
0d6badf6af42
Added not yet working backend to artifact database.
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parents:
diff
changeset
|
1633 } |
79
f69e5b87f05f
Implementation to export artifacts as xml (applied patch from issue208 by SLT).
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47
diff
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|
1634 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |