Mercurial > dive4elements > river

annotate flys-artifacts/src/main/java/de/intevation/flys/artifacts/MapArtifact.java @ 2089:0da8874bd378

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Added initial state to map artifact to be able to advance and step back. The map artifact overrides describe() to have the complete UI information in the describe response document. flys-artifacts/trunk@3613 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Raimund Renkert <raimund.renkert@intevation.de>
date Fri, 06 Jan 2012 12:02:10 +0000
parents 007a8f5ed9f1
children 60e3bf470c5b
rev   line source
2082
007a8f5ed9f1 Implemented new module "new map".
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parents:
diff changeset
1 package de.intevation.flys.artifacts;
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2
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3 import org.apache.log4j.Logger;
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4
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5 import java.util.List;
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6
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7 import org.w3c.dom.Document;
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8 import org.w3c.dom.Element;
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9 import org.w3c.dom.Node;
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10
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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 import de.intevation.artifacts.CallContext;
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14
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15 import de.intevation.artifacts.common.utils.XMLUtils;
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16 import de.intevation.artifacts.common.utils.XMLUtils.ElementCreator;
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17 import de.intevation.artifacts.common.ArtifactNamespaceContext;
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18
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19 import de.intevation.artifactdatabase.ProtocolUtils;
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20 import de.intevation.artifactdatabase.state.Facet;
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21 import de.intevation.artifactdatabase.state.State;
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22 import de.intevation.artifactdatabase.state.StateEngine;
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23 import de.intevation.artifactdatabase.state.Output;
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24 import de.intevation.artifactdatabase.transition.TransitionEngine;
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25
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26 import de.intevation.flys.model.River;
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27 import de.intevation.flys.utils.FLYSUtils;
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28
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29 import de.intevation.flys.artifacts.RiverAxisArtifact.RiverAxisState;
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30 import de.intevation.flys.artifacts.states.DefaultState;
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31 import de.intevation.flys.artifacts.context.FLYSContext;
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32 import de.intevation.flys.artifacts.model.WMSDBLayerFacet;
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33
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34
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35 public class MapArtifact extends FLYSArtifact {
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36
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37 private static final Logger logger =
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38 Logger.getLogger(MapArtifact.class);
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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.debug("MapArtifact.setup");
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49 this.identifier = identifier;
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50 name = "map";
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51
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52 FLYSContext flysContext = FLYSUtils.getFlysContext(context);
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53
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54 List<State> states = getStates(context);
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55
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56 setCurrentState(states.get(0));
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57 }
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58
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59
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60 @Override
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61 public Document describe(Document data, CallContext context) {
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62 logger.debug("Describe: the current state is: " + getCurrentStateId());
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63
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64 if (logger.isDebugEnabled()) {
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65 dumpArtifact();
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66 }
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67
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68 FLYSContext flysContext = FLYSUtils.getFlysContext(context);
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69
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70 StateEngine stateEngine = (StateEngine) flysContext.get(
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71 FLYSContext.STATE_ENGINE_KEY);
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72
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73 TransitionEngine transitionEngine = (TransitionEngine) flysContext.get(
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74 FLYSContext.TRANSITION_ENGINE_KEY);
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75
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76 List<State> reachable = transitionEngine.getReachableStates(
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77 this, getCurrentState(context), stateEngine);
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78
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79 Document description = XMLUtils.newDocument();
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80 XMLUtils.ElementCreator creator = new XMLUtils.ElementCreator(
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81 description,
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82 ArtifactNamespaceContext.NAMESPACE_URI,
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83 ArtifactNamespaceContext.NAMESPACE_PREFIX);
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84
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85 Element root = ProtocolUtils.createRootNode(creator);
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86 description.appendChild(root);
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87
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88 State current = getCurrentState(context);
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89
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90 ProtocolUtils.appendDescribeHeader(creator, root, identifier(), hash());
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91 ProtocolUtils.appendState(creator, root, current);
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92 ProtocolUtils.appendReachableStates(creator, root, reachable);
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93
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94 appendBackgroundActivity(creator, root, context);
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95
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96 Element name = ProtocolUtils.createArtNode(
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97 creator, "name",
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98 new String[] { "value" },
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99 new String[] { getName() });
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100
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101 Element ui = ProtocolUtils.createArtNode(
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102 creator, "ui", null, null);
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103
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104 Element staticUI = ProtocolUtils.createArtNode(
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105 creator, "static", null, null);
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106
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107 Element outs = ProtocolUtils.createArtNode(
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108 creator, "outputmodes", null, null);
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109 appendOutputModes(description, outs, context, identifier());
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110
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111 appendStaticUI(description, staticUI, context, identifier());
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112
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113 Element dynamic = current.describe(
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114 this,
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115 description,
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116 root,
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117 context,
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118 identifier());
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119
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120 if (dynamic != null) {
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121 ui.appendChild(dynamic);
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122 }
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123
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124 ui.appendChild(staticUI);
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125
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126 root.appendChild(name);
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127 root.appendChild(ui);
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128 root.appendChild(outs);
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129
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130 return description;
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131
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132 }
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133
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134
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135 protected static void appendBackgroundActivity(
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136 ElementCreator cr,
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137 Element root,
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138 CallContext context
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139 ) {
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140 Element inBackground = cr.create("background-processing");
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141 root.appendChild(inBackground);
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142
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143 cr.addAttr(
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144 inBackground,
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145 "value",
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146 String.valueOf(context.isInBackground()),
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147 true);
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148 }
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149
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150
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151 /**
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152 * Append output mode nodes to a document.
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153 */
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154 protected void appendOutputModes(
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155 Document doc,
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156 Element outs,
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157 CallContext context,
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158 String uuid)
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159 {
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160 List<String> stateIds = getPreviousStateIds();
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161
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162 XMLUtils.ElementCreator creator = new XMLUtils.ElementCreator(
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163 doc,
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Raimund Renkert <raimund.renkert@intevation.de>
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164 ArtifactNamespaceContext.NAMESPACE_URI,
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165 ArtifactNamespaceContext.NAMESPACE_PREFIX);
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166
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167 FLYSContext flysContext = FLYSUtils.getFlysContext(context);
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168 StateEngine engine = (StateEngine) flysContext.get(
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169 FLYSContext.STATE_ENGINE_KEY);
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170
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171 for (String stateId: stateIds) {
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172 logger.debug("Append output modes for state: " + stateId);
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173 DefaultState state = (DefaultState) engine.getState(stateId);
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174
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175 List<Output> list = state.getOutputs();
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176 if (list == null || list.size() == 0) {
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177 logger.debug("-> No output modes for this state.");
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178 continue;
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179 }
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180
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181 List<Facet> fs = facets.get(stateId);
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182
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183 if (fs == null || fs.size() == 0) {
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184 logger.debug("No facets for previous state found.");
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185 continue;
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186 }
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187
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188 logger.debug("Found " + fs.size() + " facets in previous states.");
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189
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190 List<Output> generated = generateOutputs(list, fs);
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191
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192 ProtocolUtils.appendOutputModes(doc, outs, generated);
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193 }
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194
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195 try {
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196 DefaultState cur = (DefaultState) getCurrentState(context);
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197 if (cur.validate(this)) {
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198 List<Output> list = cur.getOutputs();
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199 if (list != null && list.size() > 0) {
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200 logger.debug(
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201 "Append output modes for current state: " + cur.getID());
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202
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203 List<Facet> fs = facets.get(cur.getID());
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204
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205 if (fs != null && fs.size() > 0) {
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206 List<Output> generated = generateOutputs(list, fs);
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207
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208 logger.debug("Found " + fs.size() + " current facets.");
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209 if (!generated.isEmpty()) {
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210 ProtocolUtils.appendOutputModes(
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211 doc, outs, generated);
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212 }
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213 }
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214 else {
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215 logger.debug("No facets found for the current state.");
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216 }
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217 }
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218 }
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219 }
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220 catch (IllegalArgumentException iae) {
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221 // state is not valid, so we do not append its outputs.
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222 }
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223 }
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224
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225
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226 /**
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227 * This method appends the static data - that has already been inserted by
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228 * the user - to the static node of the DESCRIBE document.
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229 *
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230 * @param doc The document.
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231 * @param ui The root node.
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232 * @param context The CallContext.
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233 * @param uuid The identifier of the artifact.
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234 */
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235 protected void appendStaticUI(
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236 Document doc,
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Raimund Renkert <raimund.renkert@intevation.de>
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diff changeset
237 Node ui,
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Raimund Renkert <raimund.renkert@intevation.de>
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238 CallContext context,
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Raimund Renkert <raimund.renkert@intevation.de>
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239 String uuid)
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240 {
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241 List<String> stateIds = getPreviousStateIds();
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242
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243 logger.debug("previous states: " + stateIds);
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244 FLYSContext flysContext = FLYSUtils.getFlysContext(context);
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245 StateEngine engine = (StateEngine) flysContext.get(
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diff changeset
246 FLYSContext.STATE_ENGINE_KEY);
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247
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248 for (String stateId: stateIds) {
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249 logger.debug("Append static data for state: " + stateId);
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250 DefaultState state = (DefaultState) engine.getState(stateId);
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251
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252 ui.appendChild(state.describeStatic(this, doc, ui, context, uuid));
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253 }
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254 }
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255
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256
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257 public static class MapState extends RiverAxisState {
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258
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259 @Override
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260 public Object computeAdvance(
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261 FLYSArtifact artifact,
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262 String hash,
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263 CallContext context,
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264 List<Facet> facets,
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265 Object old)
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266 {
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267 logger.debug("MapState.computeAdvance");
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268
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269 this.artifact = artifact;
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270
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271 String type = getFacetType();
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272
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273 WMSDBLayerFacet facet = new WMSDBLayerFacet(
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274 0,
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275 type,
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276 getTitle(context.getMeta()),
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277 ComputeType.ADVANCE,
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278 getID(), hash,
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279 getUrl());
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280
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281 String name = type + "-" + artifact.identifier();
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282
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283 facet.addLayer(name);
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284 facet.setExtent(getExtent());
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285 facet.setSrid(getSrid());
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286 facet.setData(getDataString());
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287 facet.setFilter(getFilter());
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288 facet.setGeometryType(getGeometryType());
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289 facet.setConnection(getConnection());
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290 facet.setConnectionType(getConnectionType());
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291 facet.setLabelItem(getLabelItem());
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292
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293 facets.add(facet);
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294
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295 return null;
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296 }
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297
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298 @Override
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299 public int getRiverId() {
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300 River r = FLYSUtils.getRiver(artifact);
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301 int riverId = r.getId();
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302
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303 return riverId;
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304 }
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305 }
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306 }
http://dive4elements.wald.intevation.org