Mercurial > dive4elements > gnv-client

annotate gnv-artifacts/src/main/java/de/intevation/gnv/state/cache/ThematicDataCacheCleaner.java @ 1117:dec4257ad570

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Changed imports to fit new positions of XMLUtils and Config gnv-artifacts/trunk@1478 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Sascha L. Teichmann <sascha.teichmann@intevation.de>
date Tue, 15 Mar 2011 16:13:39 +0000
parents f953c9a559d8
children
rev   line source
1115
f953c9a559d8 Added license file and license headers.
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1 /*
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2 * Copyright (c) 2010 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
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9 /**
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10 *
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11 */
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12 package de.intevation.gnv.state.cache;
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13
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14 import java.util.ArrayList;
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15 import java.util.Collection;
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16 import java.util.Iterator;
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17 import java.util.List;
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18
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19 import net.sf.ehcache.Cache;
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20
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21 import org.apache.log4j.Logger;
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22 import org.w3c.dom.Document;
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23 import org.w3c.dom.Element;
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24 import org.w3c.dom.NodeList;
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25
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26 import de.intevation.artifacts.common.utils.Config;
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27 import de.intevation.gnv.artifacts.cache.CacheFactory;
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28 import de.intevation.gnv.geobackend.base.query.cache.CacheCleaner;
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29 import de.intevation.gnv.geobackend.base.query.container.QueryContainerFactory;
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30 import de.intevation.gnv.geobackend.base.query.container.exception.QueryContainerException;
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31 import de.intevation.gnv.geobackend.base.query.exception.QueryException;
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32 import de.intevation.gnv.state.StateBase;
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33 import de.intevation.gnv.utils.ArtifactXMLUtilities;
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34
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35
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36 /**
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37 * Extended Class of the CacheCleaner.
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38 * This Cleaner has the job to cleanup the ThematicData-Cache if it
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39 * is necessary.
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40 * @author <a href="mailto:tim.englich@intevation.de">Tim Englich</a>
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41 *
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42 */
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43 public class ThematicDataCacheCleaner extends CacheCleaner {
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44
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45 /**
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46 * the logger, used to log exceptions and additonaly information
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47 */
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48 private static Logger log = Logger.getLogger(ThematicDataCacheCleaner.class);
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49
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50 private final static String XPATH_ARTIFACTS =
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51 "/artifact-database/artifacts/artifact";
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52 private final static String XPATH_STATES = "states/state";
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53 private final static String XPATH_STATEID = "id";
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54 private final static String XPATH_QUERYID = "queryID";
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55
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56 /**
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57 * The Queries that should be Cleaned with its links to the
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58 * StateIds.
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59 */
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60 private Collection<QueryObject> queryObjects = null;
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61
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62 /**
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63 * Constructor
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64 */
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65 public ThematicDataCacheCleaner() {
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66 this.setUp();
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67 }
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68
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69 /**
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70 * Constructor
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71 * @param arg0
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72 */
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73 public ThematicDataCacheCleaner(Runnable arg0) {
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74 this.setUp();
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75 }
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76
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77 /**
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78 * Constructor
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79 * @param arg0
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80 */
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81 public ThematicDataCacheCleaner(String arg0) {
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82 this.setUp();
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83 }
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84
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85 /**
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86 * Constructor
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87 * @param arg0
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88 * @param arg1
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89 */
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90 public ThematicDataCacheCleaner(ThreadGroup arg0, Runnable arg1) {
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91 this.setUp();
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92 }
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93
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94 /**
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95 * Constructor
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96 * @param arg0
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97 * @param arg1
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98 */
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99 public ThematicDataCacheCleaner(ThreadGroup arg0, String arg1) {
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100 this.setUp();
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101 }
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102
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103 /**
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104 * Constructor
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105 * @param arg0
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106 * @param arg1
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107 */
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108 public ThematicDataCacheCleaner(Runnable arg0, String arg1) {
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109 this.setUp();
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110 }
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111
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112 /**
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113 * Constructor
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114 * @param arg0
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115 * @param arg1
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116 * @param arg2
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117 */
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118 public ThematicDataCacheCleaner(ThreadGroup arg0, Runnable arg1, String arg2) {
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119 this.setUp();
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120 }
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121
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122 /**
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123 * Constructor
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124 * @param arg0
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125 * @param arg1
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126 * @param arg2
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127 * @param arg3
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128 */
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129 public ThematicDataCacheCleaner(ThreadGroup arg0, Runnable arg1,
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130 String arg2, long arg3) {
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131 this.setUp();
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132 }
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133
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134 /**
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135 * Initializes the QueryObjects.
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136 * The Queryobjects will be read from the Configuration.
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137 * Only Queries which are defined in <code>queryID</code>-Elements
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138 * are used.
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139 * The other Queries are currently not put into the Cache.
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140 */
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141 @Override
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142 protected void setUp(){
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143 super.setUp();
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144 this.queryObjects = new ArrayList<QueryObject>();
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145 Document configuration = Config.getConfig();
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146 NodeList artifactList = Config.getNodeSetXPath(configuration,
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147 XPATH_ARTIFACTS);
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148 log.debug("ThematicDataCacheCleaner.setUp()");
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diff changeset
149 if (artifactList != null && artifactList.getLength() > 0){
797a6264b89b Integrated the CacheCleaner for the ThematicDataCache
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diff changeset
150 for (int i = 0; i < artifactList.getLength(); i++){
797a6264b89b Integrated the CacheCleaner for the ThematicDataCache
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151 Element currentArtifactNode = (Element)artifactList.item(i);
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152
845
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153 String link = currentArtifactNode.getAttribute("xlink:href");
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154 if (link != null && link.length() > 0){
797a6264b89b Integrated the CacheCleaner for the ThematicDataCache
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parents:
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155 String absolutFileName = Config.replaceConfigDir(link);
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parents:
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156 currentArtifactNode = (Element)new ArtifactXMLUtilities()
797a6264b89b Integrated the CacheCleaner for the ThematicDataCache
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157 .readConfiguration(absolutFileName);
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parents:
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158 }
797a6264b89b Integrated the CacheCleaner for the ThematicDataCache
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parents:
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159 NodeList stateList = Config.getNodeSetXPath(currentArtifactNode,
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160 XPATH_STATES);
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parents:
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161 if (stateList != null && stateList.getLength() > 0){
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parents:
diff changeset
162 for (int j = 0; j < stateList.getLength() ; j++){
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163 Element currentStateNode = (Element)stateList.item(j);
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164 String stateId = currentStateNode
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165 .getAttribute(XPATH_STATEID);
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166 String queryID = Config.getStringXPath(currentStateNode,
845
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167 XPATH_QUERYID);
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parents:
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168 try {
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parents:
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169 if (queryID != null){
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parents:
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170 String query = QueryContainerFactory
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171 .getInstance()
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Tim Englich <tim.englich@intevation.de>
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172 .getQueryContainer()
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Tim Englich <tim.englich@intevation.de>
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173 .getQuery(queryID);
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Tim Englich <tim.englich@intevation.de>
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174 QueryObject qo = new QueryObject(stateId, query);
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175 queryObjects.add(qo);
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parents:
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176 }
797a6264b89b Integrated the CacheCleaner for the ThematicDataCache
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parents:
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177 } catch (QueryContainerException e) {
797a6264b89b Integrated the CacheCleaner for the ThematicDataCache
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178 log.error(e,e);
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parents:
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179 }
797a6264b89b Integrated the CacheCleaner for the ThematicDataCache
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parents:
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180 }
797a6264b89b Integrated the CacheCleaner for the ThematicDataCache
Tim Englich <tim.englich@intevation.de>
parents:
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181 }
797a6264b89b Integrated the CacheCleaner for the ThematicDataCache
Tim Englich <tim.englich@intevation.de>
parents:
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182 }
797a6264b89b Integrated the CacheCleaner for the ThematicDataCache
Tim Englich <tim.englich@intevation.de>
parents:
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183 }
797a6264b89b Integrated the CacheCleaner for the ThematicDataCache
Tim Englich <tim.englich@intevation.de>
parents:
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184 }
797a6264b89b Integrated the CacheCleaner for the ThematicDataCache
Tim Englich <tim.englich@intevation.de>
parents:
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185
797a6264b89b Integrated the CacheCleaner for the ThematicDataCache
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parents:
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186 @Override
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187 protected void cleanup() {
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188 log.debug("ThematicDataCacheCleaner.cleanup");
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parents:
diff changeset
189 try {
797a6264b89b Integrated the CacheCleaner for the ThematicDataCache
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
190 if (queryObjects != null && queryObjects.size() > 0){
797a6264b89b Integrated the CacheCleaner for the ThematicDataCache
Tim Englich <tim.englich@intevation.de>
parents:
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191 String[] tableNames = this.getUpdatedTableNames();
797a6264b89b Integrated the CacheCleaner for the ThematicDataCache
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
192 if (tableNames != null && tableNames.length > 0){
797a6264b89b Integrated the CacheCleaner for the ThematicDataCache
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
193 Iterator<QueryObject> it = queryObjects.iterator();
797a6264b89b Integrated the CacheCleaner for the ThematicDataCache
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
194 while (it.hasNext()){
797a6264b89b Integrated the CacheCleaner for the ThematicDataCache
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
195 QueryObject qo = it.next();
797a6264b89b Integrated the CacheCleaner for the ThematicDataCache
Tim Englich <tim.englich@intevation.de>
parents:
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196 for (int i = 0; i < tableNames.length; i++){
797a6264b89b Integrated the CacheCleaner for the ThematicDataCache
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
197 if (qo.queryContainsTableName(tableNames[i])){
797a6264b89b Integrated the CacheCleaner for the ThematicDataCache
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
198 String stateId = qo.getStateId();
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Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
199 this.cleanUpCache(stateId);
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Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
200 break;
797a6264b89b Integrated the CacheCleaner for the ThematicDataCache
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
201 }
797a6264b89b Integrated the CacheCleaner for the ThematicDataCache
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
202 }
797a6264b89b Integrated the CacheCleaner for the ThematicDataCache
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
203 }
797a6264b89b Integrated the CacheCleaner for the ThematicDataCache
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
204 }else{
797a6264b89b Integrated the CacheCleaner for the ThematicDataCache
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
205 log.debug("No Tables found to cleanup.");
797a6264b89b Integrated the CacheCleaner for the ThematicDataCache
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
206 }
797a6264b89b Integrated the CacheCleaner for the ThematicDataCache
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
207 }else{
797a6264b89b Integrated the CacheCleaner for the ThematicDataCache
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
208 log.warn("No Queries to clean");
797a6264b89b Integrated the CacheCleaner for the ThematicDataCache
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
209 }
797a6264b89b Integrated the CacheCleaner for the ThematicDataCache
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
210 } catch (QueryException e) {
797a6264b89b Integrated the CacheCleaner for the ThematicDataCache
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
211 log.error(e,e);
797a6264b89b Integrated the CacheCleaner for the ThematicDataCache
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
212 }
797a6264b89b Integrated the CacheCleaner for the ThematicDataCache
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
213 }
797a6264b89b Integrated the CacheCleaner for the ThematicDataCache
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
214
797a6264b89b Integrated the CacheCleaner for the ThematicDataCache
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
215 /**
797a6264b89b Integrated the CacheCleaner for the ThematicDataCache
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
216 * Removes the Entries which Keys matches to the <code>stateId</code>
797a6264b89b Integrated the CacheCleaner for the ThematicDataCache
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
217 * from the Cache.
797a6264b89b Integrated the CacheCleaner for the ThematicDataCache
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
218 * @param stateId The Id of the State which Entries has to be removed.
797a6264b89b Integrated the CacheCleaner for the ThematicDataCache
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
219 */
797a6264b89b Integrated the CacheCleaner for the ThematicDataCache
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
220 private void cleanUpCache(String stateId){
797a6264b89b Integrated the CacheCleaner for the ThematicDataCache
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
221 log.debug("ThematicDataCacheCleaner.cleanUpCache "+stateId);
797a6264b89b Integrated the CacheCleaner for the ThematicDataCache
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
222 CacheFactory factory = CacheFactory.getInstance();
797a6264b89b Integrated the CacheCleaner for the ThematicDataCache
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
223 Cache cache = factory.getCache();
797a6264b89b Integrated the CacheCleaner for the ThematicDataCache
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
224 List<String> keys = cache.getKeys();
797a6264b89b Integrated the CacheCleaner for the ThematicDataCache
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
225 String keySample = StateBase.HASH_ID_SEPARATOR +
870
dfd02f8d3602 Removed trailing whitespace.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 845
diff changeset
226 stateId +
845
797a6264b89b Integrated the CacheCleaner for the ThematicDataCache
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
227 StateBase.HASH_ID_SEPARATOR;
797a6264b89b Integrated the CacheCleaner for the ThematicDataCache
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
228 if (keys != null && keys.size() > 0){
797a6264b89b Integrated the CacheCleaner for the ThematicDataCache
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
229 Iterator<String> it = keys.iterator();
797a6264b89b Integrated the CacheCleaner for the ThematicDataCache
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
230 while (it.hasNext()){
797a6264b89b Integrated the CacheCleaner for the ThematicDataCache
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
231 String key = it.next();
797a6264b89b Integrated the CacheCleaner for the ThematicDataCache
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
232 if (key != null && key.contains(keySample)){
797a6264b89b Integrated the CacheCleaner for the ThematicDataCache
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
233 boolean removed = cache.remove(key);
797a6264b89b Integrated the CacheCleaner for the ThematicDataCache
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
234 if (!removed){
870
dfd02f8d3602 Removed trailing whitespace.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 845
diff changeset
235 log.warn("Object with Key " +
845
797a6264b89b Integrated the CacheCleaner for the ThematicDataCache
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
236 key + "could not be removed from Cache");
797a6264b89b Integrated the CacheCleaner for the ThematicDataCache
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
237 }else{
870
dfd02f8d3602 Removed trailing whitespace.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 845
diff changeset
238 log.debug("Object with Key " +
845
797a6264b89b Integrated the CacheCleaner for the ThematicDataCache
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
239 key + "has been removed from Cache");
797a6264b89b Integrated the CacheCleaner for the ThematicDataCache
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
240 }
797a6264b89b Integrated the CacheCleaner for the ThematicDataCache
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
241 }
797a6264b89b Integrated the CacheCleaner for the ThematicDataCache
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
242 }
797a6264b89b Integrated the CacheCleaner for the ThematicDataCache
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
243 }
797a6264b89b Integrated the CacheCleaner for the ThematicDataCache
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
244 }
797a6264b89b Integrated the CacheCleaner for the ThematicDataCache
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
245 }
http://dive4elements.wald.intevation.org