Mercurial > dive4elements > river

annotate flys-artifacts/src/main/java/de/intevation/flys/artifacts/WMSDBArtifact.java @ 2683:f5af3adb3b95

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Improved datacage configuration for floodmaps and maps and modified the WMS layer artifacts to support names for layers. flys-artifacts/trunk@4383 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Thu, 10 May 2012 11:14:17 +0000
parents 5afccab9aac1
children 64dc2997b2dd
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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27
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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.resources.Resources;
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31 import de.intevation.flys.artifacts.states.DefaultState;
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32 import de.intevation.flys.artifacts.model.WMSDBLayerFacet;
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33 import de.intevation.flys.utils.FLYSUtils;
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34
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35
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36 public abstract class WMSDBArtifact extends StaticFLYSArtifact {
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37
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38 private static final Logger logger = Logger.getLogger(WMSDBArtifact.class);
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39
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40 public static final String XPATH_IDS = "/art:action/art:ids/@value";
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41
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42 public static final Pattern DB_URL_PATTERN =
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43 Pattern.compile("(.*)\\/\\/(.*):([0-9]+)\\/([a-zA-Z]+)");
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44
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45
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46 @Override
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47 public void setup(
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48 String identifier,
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49 ArtifactFactory factory,
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50 Object context,
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51 CallMeta callMeta,
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52 Document data)
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53 {
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54 logger.debug("WMSDBArtifact.setup");
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55
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56 super.setup(identifier, factory, context, callMeta, data);
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57
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58 String ids = XMLUtils.xpathString(
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59 data, XPATH_IDS, ArtifactNamespaceContext.INSTANCE);
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60
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61 if (ids != null && ids.length() > 0) {
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62 addData("ids", new DefaultStateData("ids", null, null, ids));
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63 }
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64 else {
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65 throw new IllegalArgumentException("No attribute 'ids' found!");
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66 }
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67
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68 List<Facet> fs = new ArrayList<Facet>();
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69
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70 WMSDBState state = (WMSDBState) getCurrentState(context);
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71 state.computeInit(this, hash(), context, callMeta, fs);
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72
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73 if (!fs.isEmpty()) {
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74 facets.put(getCurrentStateId(), fs);
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75 }
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76 }
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77
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78
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79 @Override
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80 protected void initialize(
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81 Artifact artifact,
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82 Object context,
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83 CallMeta callMeta)
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84 {
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85 // do nothing
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86 }
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87
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88
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89 /**
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90 * Get a list containing the one and only State.
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91 * @param context ignored.
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92 * @return list with one and only state.
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93 */
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94 @Override
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95 protected List<State> getStates(Object context) {
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96 ArrayList<State> states = new ArrayList<State>();
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97 states.add(getCurrentState(context));
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98
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99 return states;
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100 }
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101
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102
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103
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104 public static abstract class WMSDBState extends DefaultState {
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105 private static final Logger logger = Logger.getLogger(WMSDBState.class);
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106
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107 protected FLYSArtifact artifact;
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108
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109 protected String name;
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110 protected int riverId;
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111
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112
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113 public WMSDBState() {}
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114
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115 public WMSDBState(FLYSArtifact artifact) {
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116 this.artifact = artifact;
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117 this.name = null;
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118 this.riverId = 0;
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119 }
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120
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121 @Override
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122 public Object computeInit(
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123 FLYSArtifact artifact,
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124 String hash,
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125 Object context,
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126 CallMeta meta,
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127 List<Facet> facets
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128 ) {
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129 logger.debug("WMSDBState.computeInit");
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130
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131 String type = getFacetType();
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132
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133 WMSDBLayerFacet facet = new WMSDBLayerFacet(
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134 0,
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135 type,
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136 getTitle(meta),
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137 ComputeType.INIT,
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138 getID(), hash,
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139 getUrl());
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140
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141 String name = type + "-" + artifact.identifier();
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142
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143 facet.addLayer(name);
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144 facet.setExtent(getExtent());
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145 facet.setSrid(getSrid());
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146 facet.setData(getDataString());
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147 facet.setFilter(getFilter());
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148 facet.setGeometryType(getGeometryType());
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149 facet.setConnection(getConnection());
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150 facet.setConnectionType(getConnectionType());
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151 facet.setLabelItem(getLabelItem());
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152
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153 facets.add(facet);
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154
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155 return null;
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156 }
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157
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158 /**
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159 * This method returns a connection string for databases used by
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160 * Mapserver's Mapfile.
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161 *
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162 * @return A connection string for Mapserver.
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163 */
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164 protected String getConnection() {
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165 SessionFactoryImpl sf = (SessionFactoryImpl)
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166 SessionFactoryProvider.getSessionFactory();
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167
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168 String user = SessionFactoryProvider.getUser(sf);
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169 String pass = SessionFactoryProvider.getPass(sf);
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170 String url = SessionFactoryProvider.getURL(sf);
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171
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172 logger.debug("Parse connection url: " + url);
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173
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174 Matcher m = DB_URL_PATTERN.matcher(url);
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175 if (!m.matches()) {
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176 logger.warn("Could not parse Connection string.");
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177 return null;
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178 }
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179
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180 logger.debug("Groups for connection string: " + m.groupCount());
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181 int groups = m.groupCount();
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182
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183 for (int i = 0; i <= m.groupCount(); i++) {
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184 logger.debug("Group " + i + ": " + m.group(i));
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185 }
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186
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187 String connection = null;
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188
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189 if (FLYSUtils.isUsingOracle()) {
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190 if (groups < 3) {
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191 logger.warn("Could only partially parse connection string.");
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192 return null;
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193 }
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194
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195 String host = m.group(2);
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196 String port = m.group(3);
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197
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198 connection = user + "/" + pass + "@" + host;
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199 }
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200 else {
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201 if (groups < 4) {
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202 logger.warn("Could only partially parse connection string.");
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203 return null;
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204 }
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205
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206 String host = m.group(2);
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207 String port = m.group(3);
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208 String db = m.group(4);
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209
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210 StringBuilder sb = new StringBuilder();
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211 sb.append("dbname=" + db);
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212 sb.append("host='" + host + "'");
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213 sb.append("port=" + port);
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214 sb.append("password='" + pass + "'");
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215 sb.append("sslmode=disable");
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216
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217 connection = sb.toString();
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218 }
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219
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220 logger.debug("Created connection: '" + connection + "'");
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221
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222 return connection;
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223 }
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224
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225 protected String getConnectionType() {
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226 return FLYSUtils.isUsingOracle() ? "oraclespatial" : "postgis";
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227 }
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228
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229 protected String getLabelItem() {
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230 return null;
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231 }
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232
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233 public int getRiverId() {
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234 if (riverId == 0) {
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235 String ids = artifact.getDataAsString("ids");
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236 String[] parts = ids.split(";");
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237
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238 try {
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239 riverId = Integer.valueOf(parts[0]);
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240 }
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241 catch (NumberFormatException nfe) {
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242 logger.error("Cannot parse river id from '" + parts[0] + "'");
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243 }
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244 }
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245
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246 return riverId;
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247 }
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248
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249 /**
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250 * Returns the name of the WMS layer. This method extracts the name
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251 * from 'ids' data string. It is expected, that the 'ids' string is
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252 * seperated by ';' and that the name is placed at index 1.
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253 *
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254 * @return the name of the WMS layer.
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255 */
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256 public String getName() {
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257 if (name == null) {
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258 String ids = artifact.getDataAsString("ids");
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259
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260 String parts[] = ids != null ? ids.split(";") : null;
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261
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262 if (parts != null && parts.length >= 2) {
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263 name = parts[1];
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264 }
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265 }
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266
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267 return name;
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268 }
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269
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270
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271 /**
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272 * Returns the name of the layer (returned by getName()) or the layer
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273 * type if the name is empty. The layer type is created by an i18n
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274 * string of getFacetType().
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275 *
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276 * @param meta A CallMeta used for i18n.
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277 *
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278 * @return the name of the layer or its type if name is empty.
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279 */
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280 protected String getTitle(CallMeta meta) {
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281 String name = getName();
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282
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283 return name != null && name.length() > 0
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284 ? name
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285 : Resources.getMsg(
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286 meta,
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287 getFacetType(),
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288 getFacetType());
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289 }
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290
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291
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292 protected abstract String getFacetType();
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293
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294 protected abstract String getUrl();
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295
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296 protected abstract String getSrid();
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297
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298 protected abstract Envelope getExtent();
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299
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300 protected abstract String getFilter();
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301
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302 protected abstract String getDataString();
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303
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304 protected abstract String getGeometryType();
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305 } // end of WMSDBState
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306 }
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307 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org