Mercurial > dive4elements > river

annotate flys-artifacts/src/main/java/de/intevation/flys/artifacts/ExternalWMSArtifact.java @ 2096:bf598599782a

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Made old calculation results available for floodmaps. flys-artifacts/trunk@3644 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Wed, 11 Jan 2012 10:17:16 +0000
parents 8afd6a9bb244
children 6717b4725ddf
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.state.DefaultOutput;
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18 import de.intevation.artifactdatabase.state.Facet;
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19 import de.intevation.artifactdatabase.state.State;
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20
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21 import de.intevation.flys.artifacts.states.WMSBackgroundState;
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22
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23
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24 public class ExternalWMSArtifact extends StaticFLYSArtifact {
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25
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26 public static final String XPATH_IDS = "/art:action/art:ids/@value";
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27
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28 public static final String NAME = "external_wms";
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29
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30 private static final Logger logger =
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31 Logger.getLogger(ExternalWMSArtifact.class);
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32
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33
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34 @Override
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35 public String getName() {
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36 return NAME;
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37 }
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38
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39
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40 @Override
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41 public void setup(
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42 String identifier,
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43 ArtifactFactory factory,
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44 Object context,
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45 CallMeta callMeta,
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46 Document data)
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47 {
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48 logger.info("ExternalWMSArtifact.setup");
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49
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50 super.setup(identifier, factory, context, callMeta, data);
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51
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52 String ids = XMLUtils.xpathString(
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53 data, XPATH_IDS, ArtifactNamespaceContext.INSTANCE);
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54
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55 if (ids != null && ids.length() > 0) {
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56 addStringData("ids", ids);
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57 }
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58 else {
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59 throw new IllegalArgumentException("No attribute 'ids' found!");
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60 }
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61
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62 List<Facet> fs = new ArrayList<Facet>();
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63
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64 WMSBackgroundState s = (WMSBackgroundState) getCurrentState(context);
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65 s.computeInit(this, hash(), context, callMeta, fs);
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66
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67 if (!fs.isEmpty()) {
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68 facets.put(getCurrentStateId(), fs);
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69 }
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70 }
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71
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72
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73 @Override
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74 protected void initialize(
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75 Artifact artifact,
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76 Object context,
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77 CallMeta callMeta)
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78 {
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79 // do nothing
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80 }
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81
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82
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83 @Override
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84 public State getCurrentState(Object cc) {
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85 State s = new ExternalWMSState(this);
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86
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87 List<Facet> fs = facets.get(getCurrentStateId());
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88
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89 DefaultOutput o = new DefaultOutput(
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90 "floodmap",
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91 "floodmap",
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92 "image/png",
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93 fs,
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94 "map");
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95
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96 s.getOutputs().add(o);
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97
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98 return s;
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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 * Get a list containing the one and only State.
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104 * @param context ignored.
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105 * @return list with one and only state.
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106 */
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107 @Override
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108 protected List<State> getStates(Object context) {
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109 ArrayList<State> states = new ArrayList<State>();
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110 states.add(getCurrentState(context));
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111
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112 return states;
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113 }
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114
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115
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116 public static class ExternalWMSState extends WMSBackgroundState {
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117
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118 protected ExternalWMSArtifact artifact;
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119
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120 protected String ids;
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121
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122
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123 public ExternalWMSState(ExternalWMSArtifact artifact) {
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124 super();
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125 this.artifact = artifact;
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126 }
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127
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128 protected String getIds() {
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129 if (ids == null || ids.length() == 0) {
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130 ids = artifact.getDataAsString("ids");
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131 }
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132
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133 return ids;
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134 }
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135
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136 @Override
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137 protected String getFacetType() {
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138 return FLOODMAP_EXTERNAL_WMS;
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139 }
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140
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141 @Override
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142 protected String getSrid() {
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143 return "";
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144 }
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145
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146 @Override
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147 protected String getUrl() {
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148 String ids = getIds();
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149 String[] parts = ids.split(";");
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150
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151 return parts[0];
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152 }
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153
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154 @Override
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155 protected String getLayer() {
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156 String ids = getIds();
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157 String[] parts = ids.split(";");
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158
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159 return parts[1];
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160 }
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161
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162 @Override
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163 protected String getTitle(CallMeta meta) {
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164 String ids = getIds();
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165 String[] parts = ids.split(";");
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166
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167 return parts[2];
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168 }
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169 } // end of class ExternalWMSState
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170 }
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171 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org