Mercurial > dive4elements > river
annotate flys-artifacts/src/main/java/de/intevation/flys/artifacts/datacage/Datacage.java @ 984:2b05c4a0c6fd
Datacage: clear database before initial scan
flys-artifacts/trunk@2416 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author | Sascha L. Teichmann <sascha.teichmann@intevation.de> |
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date | Thu, 28 Jul 2011 14:26:01 +0000 |
parents | 4ea5f5a2284e |
children | 70545233f8ee |
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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_INSERT_USER = "insert.user"; |
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34 |
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35 protected SQLExecutor sqlExecutor; |
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36 |
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37 public class InitialScan |
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38 implements ArtifactDatabase.ArtifactLoadedCallback |
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39 { |
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40 protected LRUCache<String, Integer> users; |
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41 |
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42 public InitialScan() { |
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43 } |
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44 |
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45 @Override |
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46 public void artifactLoaded( |
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47 String userId, |
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48 String collectionId, |
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49 String artifactId, |
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50 Artifact artifact |
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51 ) { |
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52 if (!(artifact instanceof FLYSArtifact)) { |
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53 log.warn("ignoring none FLYS artifacts"); |
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54 return; |
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55 } |
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56 |
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57 FLYSArtifact flysArtifact = (FLYSArtifact)artifact; |
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58 // TODO: implement me! |
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59 } |
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60 |
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61 public boolean scan(ArtifactDatabase adb) { |
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62 try { |
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63 adb.loadAllArtifacts(this); |
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64 } |
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65 catch (ArtifactDatabaseException ade) { |
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66 log.error(ade); |
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67 return false; |
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68 } |
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69 return true; |
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70 } |
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71 } // class InitialScan |
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72 |
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73 |
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74 public Datacage() { |
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75 } |
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76 |
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77 @Override |
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78 public void setup(Document document) { |
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79 log.debug("setup"); |
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80 DBConfig config = DBConfig.getInstance(); |
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81 setupSQL(config.getSQL()); |
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82 sqlExecutor = new SQLExecutor(config.getDBConnection()); |
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83 } |
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84 |
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85 protected void setupSQL(SQL sql) { |
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86 SQL_DELETE_ALL_USERS = sql.get(SQL_DELETE_ALL_USERS); |
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87 SQL_INSERT_USER = sql.get(SQL_INSERT_USER); |
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88 } |
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89 |
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90 @Override |
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91 public void systemUp(GlobalContext context) { |
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92 log.debug("systemUp"); |
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93 initialScan(context); |
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94 } |
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95 |
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96 protected void initialScan(GlobalContext context) { |
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97 log.debug("initialScan"); |
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98 |
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99 Object adbObject = context.get(ARTEFACT_DATABASE_KEY); |
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100 |
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101 if (!(adbObject instanceof ArtifactDatabase)) { |
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102 log.error("missing artefact database. Cannot scan"); |
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103 return; |
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104 } |
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105 |
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106 ArtifactDatabase adb = (ArtifactDatabase)adbObject; |
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107 |
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108 if (!cleanDatabase()) { |
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109 log.error("cleaning database failed"); |
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110 return; |
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111 } |
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112 |
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113 InitialScan is = new InitialScan(); |
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114 |
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115 if (!is.scan(adb)) { |
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116 log.error("initial scan failed"); |
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117 return; |
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118 } |
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119 |
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120 } |
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121 |
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122 protected boolean cleanDatabase() { |
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123 |
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124 return sqlExecutor.new Instance() { |
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125 @Override |
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126 public boolean doIt() throws SQLException { |
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127 prepareStatement(SQL_DELETE_ALL_USERS); |
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128 stmnt.execute(); |
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129 return true; |
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130 } |
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131 }.runWrite(); |
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132 } |
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133 |
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134 |
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135 @Override |
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136 public void systemDown(GlobalContext context) { |
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137 log.debug("systemDown"); |
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138 } |
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139 } |
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140 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |