Mercurial > dive4elements > river

annotate flys-artifacts/src/main/java/de/intevation/flys/artifacts/datacage/Datacage.java @ 987:82ef338fee91

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Datacage: Add collections at initial scan. flys-artifacts/trunk@2419 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Sascha L. Teichmann <sascha.teichmann@intevation.de>
date Thu, 28 Jul 2011 15:34:26 +0000
parents 70545233f8ee
children dbe39e1fb5e7
rev   line source
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1 package de.intevation.flys.artifacts.datacage;
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2
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3 import java.sql.SQLException;
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4
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5 import de.intevation.artifacts.GlobalContext;
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6
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7 import de.intevation.artifactdatabase.db.SQL;
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8 import de.intevation.artifactdatabase.db.SQLExecutor;
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9
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10 import de.intevation.artifactdatabase.LifetimeListener;
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11
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12 import de.intevation.artifacts.Artifact;
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13 import de.intevation.artifacts.ArtifactDatabase;
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14 import de.intevation.artifacts.ArtifactDatabaseException;
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15
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16 import de.intevation.flys.artifacts.FLYSArtifact;
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17
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18 import de.intevation.artifacts.common.utils.LRUCache;
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19
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20 import org.apache.log4j.Logger;
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21
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22 import org.w3c.dom.Document;
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23
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24 public class Datacage
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25 implements LifetimeListener
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26 {
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27 private static Logger log = Logger.getLogger(Datacage.class);
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28
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29 public static final String ARTEFACT_DATABASE_KEY =
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30 "global.artifact.database";
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31
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32 private String SQL_DELETE_ALL_USERS = "delete.all.users";
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33 private String SQL_USER_ID_NEXTVAL = "user.id.nextval";
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34 private String SQL_USER_BY_GID = "user.by.gid";
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35 private String SQL_INSERT_USER = "insert.user";
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36 private String SQL_COLLECTION_BY_GID = "collection.by.gid";
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37 private String SQL_COLLECTION_ID_NEXTVAL = "collection.id.nextval";
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38 private String SQL_INSERT_COLLECTION = "insert.collection";
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39
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40 protected SQLExecutor sqlExecutor;
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41
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42 public class InitialScan
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43 implements ArtifactDatabase.ArtifactLoadedCallback
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44 {
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45 protected LRUCache<String, Integer> users;
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46 protected LRUCache<String, Integer> collections;
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47
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48 public InitialScan() {
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49 users = new LRUCache<String, Integer>();
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50 collections = new LRUCache<String, Integer>();
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51 }
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52
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53 @Override
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54 public void artifactLoaded(
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55 String userId,
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56 String collectionId,
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57 String artifactId,
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58 Artifact artifact
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59 ) {
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60 if (!(artifact instanceof FLYSArtifact)) {
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61 log.warn("ignoring none FLYS artifacts");
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62 return;
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63 }
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64
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65 FLYSArtifact flysArtifact = (FLYSArtifact)artifact;
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66
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67 Integer uId = getUserId(userId);
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68 // TODO: We need the name of the collection
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69 Integer cId = getCollectionId(collectionId, uId, "XXX");
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70
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71 // TODO: implement me!
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72 }
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73
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74 protected Integer getId(
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75 LRUCache<String, Integer> cache,
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76 final String idString,
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77 final String selectById
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78 ) {
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79 Integer id = cache.get(idString);
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80 if (id != null) {
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81 return id;
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82 }
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83
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84 final Integer [] res = new Integer[1];
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85
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86 SQLExecutor.Instance exec = sqlExecutor.new Instance() {
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87 @Override
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88 public boolean doIt() throws SQLException {
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89 prepareStatement(selectById);
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90 stmnt.setString(1, idString);
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91 result = stmnt.executeQuery();
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92 if (!result.next()) {
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93 return false;
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94 }
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95 res[0] = result.getInt(1);
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96 return true;
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97 }
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98 };
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99
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100 if (exec.runRead()) {
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101 cache.put(idString, res[0]);
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102 return res[0];
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103 }
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104
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105 return null;
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106 }
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107
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108
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109 protected Integer getCollectionId(
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110 final String collectionId,
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111 final Integer ownerId,
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112 final String collectionName
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113 ) {
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114 Integer c = getId(collections, collectionId, SQL_COLLECTION_BY_GID);
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115
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116 if (c != null) {
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117 return c;
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118 }
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119
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120 final Integer [] res = new Integer[1];
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121
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122 SQLExecutor.Instance exec = sqlExecutor.new Instance() {
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diff changeset
123 @Override
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124 public boolean doIt() throws SQLException {
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125 prepareStatement(SQL_COLLECTION_ID_NEXTVAL);
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126 result = stmnt.executeQuery();
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127 if (!result.next()) {
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128 return false;
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129 }
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130 res[0] = result.getInt(1);
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131 reset();
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132 prepareStatement(SQL_INSERT_COLLECTION);
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133 stmnt.setInt (1, res[0]);
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134 stmnt.setString(2, collectionId);
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135 stmnt.setInt (3, ownerId);
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136 stmnt.setString(4, collectionName);
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137 stmnt.execute();
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138 return true;
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diff changeset
139 }
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diff changeset
140 };
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141
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142 if (exec.runWrite()) {
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diff changeset
143 collections.put(collectionId, res[0]);
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144 return res[0];
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145 }
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146
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147 return null;
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148 }
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149
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150 protected Integer getUserId(final String userId) {
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151
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152 Integer u = getId(users, userId, SQL_USER_BY_GID);
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153
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154 if (u != null) {
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155 return u;
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156 }
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157
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158 final Integer [] res = new Integer[1];
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159
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160 SQLExecutor.Instance exec = sqlExecutor.new Instance() {
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161 @Override
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162 public boolean doIt() throws SQLException {
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163 prepareStatement(SQL_USER_ID_NEXTVAL);
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diff changeset
164 result = stmnt.executeQuery();
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diff changeset
165 if (!result.next()) {
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diff changeset
166 return false;
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167 }
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diff changeset
168 res[0] = result.getInt(1);
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diff changeset
169 reset();
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diff changeset
170 prepareStatement(SQL_INSERT_USER);
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diff changeset
171 stmnt.setInt (1, res[0]);
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diff changeset
172 stmnt.setString(2, userId);
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diff changeset
173 stmnt.execute();
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diff changeset
174 return true;
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parents: 984
diff changeset
175 }
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parents: 984
diff changeset
176 };
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177
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diff changeset
178 if (exec.runWrite()) {
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diff changeset
179 users.put(userId, res[0]);
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diff changeset
180 return res[0];
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diff changeset
181 }
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182
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183 return null;
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184 }
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185
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186 public boolean scan(ArtifactDatabase adb) {
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diff changeset
187 try {
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diff changeset
188 adb.loadAllArtifacts(this);
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189 }
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diff changeset
190 catch (ArtifactDatabaseException ade) {
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diff changeset
191 log.error(ade);
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diff changeset
192 return false;
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diff changeset
193 }
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diff changeset
194 return true;
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diff changeset
195 }
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196 } // class InitialScan
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197
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198
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199 public Datacage() {
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200 }
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201
66b3f2f064de Added the datacage as lifetime listener to the artifact database to create the initial index.
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diff changeset
202 @Override
66b3f2f064de Added the datacage as lifetime listener to the artifact database to create the initial index.
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parents:
diff changeset
203 public void setup(Document document) {
66b3f2f064de Added the datacage as lifetime listener to the artifact database to create the initial index.
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diff changeset
204 log.debug("setup");
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4ea5f5a2284e Ajusted datacage to use the SQL infrastructure from the artifact database.
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diff changeset
205 DBConfig config = DBConfig.getInstance();
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diff changeset
206 setupSQL(config.getSQL());
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diff changeset
207 sqlExecutor = new SQLExecutor(config.getDBConnection());
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diff changeset
208 }
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diff changeset
209
4ea5f5a2284e Ajusted datacage to use the SQL infrastructure from the artifact database.
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parents: 982
diff changeset
210 protected void setupSQL(SQL sql) {
987
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parents: 986
diff changeset
211 SQL_DELETE_ALL_USERS = sql.get(SQL_DELETE_ALL_USERS);
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parents: 986
diff changeset
212 SQL_USER_ID_NEXTVAL = sql.get(SQL_USER_ID_NEXTVAL);
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diff changeset
213 SQL_USER_BY_GID = sql.get(SQL_USER_BY_GID);
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diff changeset
214 SQL_INSERT_USER = sql.get(SQL_INSERT_USER);
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parents: 986
diff changeset
215 SQL_COLLECTION_BY_GID = sql.get(SQL_COLLECTION_BY_GID);
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diff changeset
216 SQL_COLLECTION_ID_NEXTVAL = sql.get(SQL_COLLECTION_ID_NEXTVAL);
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diff changeset
217 SQL_INSERT_COLLECTION = sql.get(SQL_INSERT_COLLECTION);
982
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diff changeset
218 }
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parents:
diff changeset
219
66b3f2f064de Added the datacage as lifetime listener to the artifact database to create the initial index.
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diff changeset
220 @Override
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parents:
diff changeset
221 public void systemUp(GlobalContext context) {
66b3f2f064de Added the datacage as lifetime listener to the artifact database to create the initial index.
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diff changeset
222 log.debug("systemUp");
984
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diff changeset
223 initialScan(context);
982
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diff changeset
224 }
66b3f2f064de Added the datacage as lifetime listener to the artifact database to create the initial index.
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parents:
diff changeset
225
984
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diff changeset
226 protected void initialScan(GlobalContext context) {
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diff changeset
227 log.debug("initialScan");
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diff changeset
228
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diff changeset
229 Object adbObject = context.get(ARTEFACT_DATABASE_KEY);
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diff changeset
230
2b05c4a0c6fd Datacage: clear database before initial scan
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parents: 983
diff changeset
231 if (!(adbObject instanceof ArtifactDatabase)) {
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parents: 983
diff changeset
232 log.error("missing artefact database. Cannot scan");
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diff changeset
233 return;
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parents: 983
diff changeset
234 }
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parents: 983
diff changeset
235
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diff changeset
236 ArtifactDatabase adb = (ArtifactDatabase)adbObject;
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diff changeset
237
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diff changeset
238 if (!cleanDatabase()) {
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parents: 983
diff changeset
239 log.error("cleaning database failed");
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diff changeset
240 return;
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parents: 983
diff changeset
241 }
2b05c4a0c6fd Datacage: clear database before initial scan
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diff changeset
242
2b05c4a0c6fd Datacage: clear database before initial scan
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parents: 983
diff changeset
243 InitialScan is = new InitialScan();
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diff changeset
244
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parents: 983
diff changeset
245 if (!is.scan(adb)) {
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parents: 983
diff changeset
246 log.error("initial scan failed");
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parents: 983
diff changeset
247 return;
2b05c4a0c6fd Datacage: clear database before initial scan
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parents: 983
diff changeset
248 }
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diff changeset
249
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250 }
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251
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252 protected boolean cleanDatabase() {
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253
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254 return sqlExecutor.new Instance() {
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255 @Override
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256 public boolean doIt() throws SQLException {
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257 prepareStatement(SQL_DELETE_ALL_USERS);
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258 stmnt.execute();
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259 return true;
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260 }
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261 }.runWrite();
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262 }
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263
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264
982
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265 @Override
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266 public void systemDown(GlobalContext context) {
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267 log.debug("systemDown");
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268 }
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269 }
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270 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org