Mercurial > dive4elements > river

annotate flys-artifacts/src/main/java/de/intevation/flys/artifacts/WMSDBArtifact.java @ 2197:5781847433d8

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"Bezugslinienverfahren": Implemented the on-the-flys shift to (0, 0). flys-artifacts/trunk@3813 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Sascha L. Teichmann <sascha.teichmann@intevation.de>
date Fri, 27 Jan 2012 17:59:24 +0000
parents 0da8874bd378
children 5afccab9aac1
rev   line source
1805
5e9696c32f04 Added datacage config and loaders for KM WMS layer in floodmaps.
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1 package de.intevation.flys.artifacts;
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2
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3 import java.util.ArrayList;
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4 import java.util.List;
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5
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6 import java.util.regex.Pattern;
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7 import java.util.regex.Matcher;
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8
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9 import org.w3c.dom.Document;
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10
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11 import org.apache.log4j.Logger;
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12
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13 import org.hibernate.impl.SessionFactoryImpl;
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14
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15 import com.vividsolutions.jts.geom.Envelope;
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16
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17 import de.intevation.artifacts.Artifact;
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18 import de.intevation.artifacts.ArtifactFactory;
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19 import de.intevation.artifacts.CallMeta;
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20
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21 import de.intevation.artifactdatabase.data.DefaultStateData;
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22 import de.intevation.artifactdatabase.state.Facet;
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23 import de.intevation.artifactdatabase.state.State;
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24
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25 import de.intevation.artifacts.common.ArtifactNamespaceContext;
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26 import de.intevation.artifacts.common.utils.XMLUtils;
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28 import de.intevation.flys.backend.SessionFactoryProvider;
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29
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30 import de.intevation.flys.artifacts.states.DefaultState;
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31 import de.intevation.flys.artifacts.model.WMSDBLayerFacet;
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32 import de.intevation.flys.utils.FLYSUtils;
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33
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34
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35 public abstract class WMSDBArtifact extends StaticFLYSArtifact {
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36
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37 private static final Logger logger = Logger.getLogger(WMSDBArtifact.class);
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38
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39 public static final String XPATH_IDS = "/art:action/art:ids/@value";
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40
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41 public static final Pattern DB_URL_PATTERN =
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42 Pattern.compile("(.*)\\/\\/(.*):([0-9]+)\\/([a-zA-Z]+)");
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43
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44
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45 @Override
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46 public void setup(
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47 String identifier,
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48 ArtifactFactory factory,
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49 Object context,
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50 CallMeta callMeta,
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51 Document data)
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52 {
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53 logger.debug("WMSDBArtifact.setup");
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54
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55 super.setup(identifier, factory, context, callMeta, data);
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56
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57 String ids = XMLUtils.xpathString(
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58 data, XPATH_IDS, ArtifactNamespaceContext.INSTANCE);
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59
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60 if (ids != null && ids.length() > 0) {
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61 addData("ids", new DefaultStateData("ids", null, null, ids));
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62 }
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63 else {
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64 throw new IllegalArgumentException("No attribute 'ids' found!");
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65 }
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66
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67 List<Facet> fs = new ArrayList<Facet>();
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68
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69 WMSDBState state = (WMSDBState) getCurrentState(context);
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70 state.computeInit(this, hash(), context, callMeta, fs);
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71
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72 if (!fs.isEmpty()) {
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73 facets.put(getCurrentStateId(), fs);
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74 }
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75 }
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76
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77
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78 @Override
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79 protected void initialize(
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80 Artifact artifact,
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81 Object context,
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82 CallMeta callMeta)
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83 {
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84 // do nothing
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85 }
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86
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87
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88 /**
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89 * Get a list containing the one and only State.
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90 * @param context ignored.
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91 * @return list with one and only state.
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92 */
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93 @Override
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94 protected List<State> getStates(Object context) {
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95 ArrayList<State> states = new ArrayList<State>();
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96 states.add(getCurrentState(context));
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97
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98 return states;
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99 }
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100
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101
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102
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103 public static abstract class WMSDBState extends DefaultState {
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104 private static final Logger logger = Logger.getLogger(WMSDBState.class);
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105
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106 protected FLYSArtifact artifact;
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107
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108 public WMSDBState() {}
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109
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110 public WMSDBState(FLYSArtifact artifact) {
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111 this.artifact = artifact;
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112 }
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113
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114 @Override
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115 public Object computeInit(
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116 FLYSArtifact artifact,
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117 String hash,
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118 Object context,
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119 CallMeta meta,
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120 List<Facet> facets
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121 ) {
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122 logger.debug("WMSDBState.computeInit");
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123
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124 String type = getFacetType();
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125
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126 WMSDBLayerFacet facet = new WMSDBLayerFacet(
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127 0,
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128 type,
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129 getTitle(meta),
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130 ComputeType.INIT,
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131 getID(), hash,
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132 getUrl());
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133
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134 String name = type + "-" + artifact.identifier();
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135
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136 facet.addLayer(name);
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137 facet.setExtent(getExtent());
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138 facet.setSrid(getSrid());
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139 facet.setData(getDataString());
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140 facet.setFilter(getFilter());
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141 facet.setGeometryType(getGeometryType());
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142 facet.setConnection(getConnection());
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143 facet.setConnectionType(getConnectionType());
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144 facet.setLabelItem(getLabelItem());
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145
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146 facets.add(facet);
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147
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148 return null;
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149 }
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150
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151 /**
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152 * This method returns a connection string for databases used by
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153 * Mapserver's Mapfile.
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154 *
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155 * @return A connection string for Mapserver.
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156 */
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157 protected String getConnection() {
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158 SessionFactoryImpl sf = (SessionFactoryImpl)
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159 SessionFactoryProvider.getSessionFactory();
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160
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161 String user = SessionFactoryProvider.getUser(sf);
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162 String pass = SessionFactoryProvider.getPass(sf);
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163 String url = SessionFactoryProvider.getURL(sf);
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164
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165 logger.debug("Parse connection url: " + url);
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166
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167 Matcher m = DB_URL_PATTERN.matcher(url);
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168 if (!m.matches()) {
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169 logger.warn("Could not parse Connection string.");
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170 return null;
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171 }
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172
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173 logger.debug("Groups for connection string: " + m.groupCount());
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174 int groups = m.groupCount();
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175
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176 for (int i = 0; i <= m.groupCount(); i++) {
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177 logger.debug("Group " + i + ": " + m.group(i));
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178 }
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179
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180 String connection = null;
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181
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182 if (FLYSUtils.isUsingOracle()) {
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183 if (groups < 3) {
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184 logger.warn("Could only partially parse connection string.");
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185 return null;
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186 }
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187
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188 String host = m.group(2);
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189 String port = m.group(3);
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190
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191 connection = user + "/" + pass + "@" + host;
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192 }
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193 else {
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194 if (groups < 4) {
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195 logger.warn("Could only partially parse connection string.");
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196 return null;
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197 }
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198
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199 String host = m.group(2);
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200 String port = m.group(3);
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201 String db = m.group(4);
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202
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203 StringBuilder sb = new StringBuilder();
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204 sb.append("dbname=" + db);
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205 sb.append("host='" + host + "'");
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206 sb.append("port=" + port);
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207 sb.append("password='" + pass + "'");
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208 sb.append("sslmode=disable");
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209
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210 connection = sb.toString();
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211 }
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212
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213 logger.debug("Created connection: '" + connection + "'");
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214
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215 return connection;
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216 }
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217
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218 protected String getConnectionType() {
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219 return FLYSUtils.isUsingOracle() ? "oraclespatial" : "postgis";
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220 }
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221
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222 protected String getLabelItem() {
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223 return null;
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224 }
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225
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226 protected abstract String getFacetType();
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227
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228 protected abstract String getTitle(CallMeta meta);
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229
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230 protected abstract String getUrl();
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231
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232 protected abstract String getSrid();
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233
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234 protected abstract Envelope getExtent();
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235
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236 protected abstract String getFilter();
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237
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238 protected abstract String getDataString();
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239
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240 protected abstract String getGeometryType();
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241 } // end of WMSDBState
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242 }
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243 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org