Mercurial > dive4elements > river

annotate flys-artifacts/src/main/java/de/intevation/flys/artifacts/ExternalWMSArtifact.java @ 1926:fde3db5e68e8

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Added a new Artifact to enable users to add external WMS layers to floodmaps. flys-artifacts/trunk@3302 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Tue, 22 Nov 2011 20:04:46 +0000
parents
children 8afd6a9bb244
rev   line source
1926
fde3db5e68e8 Added a new Artifact to enable users to add external WMS layers to 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 org.apache.log4j.Logger;
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7
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8 import org.w3c.dom.Document;
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9
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10 import de.intevation.artifacts.Artifact;
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11 import de.intevation.artifacts.ArtifactFactory;
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12 import de.intevation.artifacts.CallMeta;
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13
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14 import de.intevation.artifacts.common.ArtifactNamespaceContext;
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15 import de.intevation.artifacts.common.utils.XMLUtils;
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16
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17 import de.intevation.artifactdatabase.data.DefaultStateData;
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18 import de.intevation.artifactdatabase.state.DefaultOutput;
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19 import de.intevation.artifactdatabase.state.Facet;
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20 import de.intevation.artifactdatabase.state.State;
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21
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22 import de.intevation.flys.artifacts.states.WMSBackgroundState;
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23
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24
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25 public class ExternalWMSArtifact extends StaticFLYSArtifact {
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26
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27 public static final String XPATH_IDS = "/art:action/art:ids/@value";
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28
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29 public static final String NAME = "external_wms";
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30
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31 private static final Logger logger =
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32 Logger.getLogger(ExternalWMSArtifact.class);
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33
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34
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35 @Override
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36 public String getName() {
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37 return NAME;
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38 }
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39
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40
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41 @Override
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42 public void setup(
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43 String identifier,
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44 ArtifactFactory factory,
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45 Object context,
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46 CallMeta callMeta,
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47 Document data)
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48 {
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49 logger.info("ExternalWMSArtifact.setup");
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50
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51 super.setup(identifier, factory, context, callMeta, data);
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52
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53 String ids = XMLUtils.xpathString(
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54 data, XPATH_IDS, ArtifactNamespaceContext.INSTANCE);
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55
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56 if (ids != null && ids.length() > 0) {
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57 addData("ids", new DefaultStateData("ids", null, null, ids));
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58 }
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59 else {
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60 throw new IllegalArgumentException("No attribute 'ids' found!");
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61 }
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62
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63 List<Facet> fs = new ArrayList<Facet>();
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64
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65 WMSBackgroundState s = (WMSBackgroundState) getCurrentState(context);
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66 s.computeInit(this, hash(), context, callMeta, fs);
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67
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68 if (!fs.isEmpty()) {
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69 facets.put(getCurrentStateId(), fs);
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70 }
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71 }
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72
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73
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74 @Override
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75 protected void initialize(
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76 Artifact artifact,
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77 Object context,
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78 CallMeta callMeta)
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79 {
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80 // do nothing
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81 }
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82
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83
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84 @Override
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85 public State getCurrentState(Object cc) {
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86 State s = new ExternalWMSState(this);
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87
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88 List<Facet> fs = facets.get(getCurrentStateId());
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89
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90 DefaultOutput o = new DefaultOutput(
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91 "floodmap",
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92 "floodmap",
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93 "image/png",
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94 fs,
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95 "map");
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96
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97 s.getOutputs().add(o);
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98
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99 return s;
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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 * Get a list containing the one and only State.
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105 * @param context ignored.
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106 * @return list with one and only state.
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107 */
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108 @Override
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109 protected List<State> getStates(Object context) {
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110 ArrayList<State> states = new ArrayList<State>();
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111 states.add(getCurrentState(context));
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112
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113 return states;
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114 }
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115
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116
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117 public static class ExternalWMSState extends WMSBackgroundState {
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118
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119 protected ExternalWMSArtifact artifact;
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120
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121 protected String ids;
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122
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123
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124 public ExternalWMSState(ExternalWMSArtifact artifact) {
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125 super();
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126 this.artifact = artifact;
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127 }
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128
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129 protected String getIds() {
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130 if (ids == null || ids.length() == 0) {
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131 ids = artifact.getDataAsString("ids");
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132 }
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133
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134 return ids;
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135 }
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136
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137 @Override
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138 protected String getFacetType() {
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139 return FLOODMAP_EXTERNAL_WMS;
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140 }
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141
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142 @Override
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143 protected String getSrid() {
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144 return "";
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145 }
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146
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147 @Override
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148 protected String getUrl() {
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149 String ids = getIds();
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150 String[] parts = ids.split(";");
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151
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152 return parts[0];
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153 }
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154
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155 @Override
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156 protected String getLayer() {
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157 String ids = getIds();
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158 String[] parts = ids.split(";");
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159
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160 return parts[1];
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161 }
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162
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163 @Override
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164 protected String getTitle(CallMeta meta) {
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165 String ids = getIds();
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166 String[] parts = ids.split(";");
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167
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168 return parts[2];
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169 }
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170 } // end of class ExternalWMSState
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171 }
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172 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org