Mercurial > dive4elements > river

annotate flys-artifacts/src/main/java/de/intevation/flys/artifacts/AnnotationArtifact.java @ 1032:abd2ab6dff4f

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Let AnnotationArtifact fetch "more correct" data. flys-artifacts/trunk@2492 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Felix Wolfsteller <felix.wolfsteller@intevation.de>
date Fri, 12 Aug 2011 12:54:19 +0000
parents a39511688679
children 821aaceb2776
rev   line source
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a39511688679 Added initial version of AnnotationArtifact and friends.
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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.Iterator;
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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
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10 import org.apache.log4j.Logger;
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11
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12 import org.hibernate.Session;
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13
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14 //import net.sf.ehcache.Cache;
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15
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16 import de.intevation.artifacts.Artifact;
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17 import de.intevation.artifacts.ArtifactNamespaceContext;
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18 import de.intevation.artifacts.CallContext;
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19 import de.intevation.artifacts.CallMeta;
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20
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21 import de.intevation.artifactdatabase.ProtocolUtils;
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22 import de.intevation.artifactdatabase.state.Facet;
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23 import de.intevation.artifactdatabase.state.Output;
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24 import de.intevation.artifactdatabase.state.State;
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25 import de.intevation.artifactdatabase.state.StateEngine;
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26
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27 import de.intevation.artifacts.common.utils.XMLUtils;
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28
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29 import de.intevation.flys.artifacts.states.DefaultState;
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30 import de.intevation.flys.artifacts.context.FLYSContext;
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31
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32 import de.intevation.flys.backend.SessionHolder;
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33
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34 import de.intevation.flys.artifacts.cache.CacheFactory;
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35
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36 import de.intevation.flys.model.Annotation;
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37 import de.intevation.flys.artifacts.model.AnnotationsFactory;
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38
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39
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40 /**
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41 * Artifact to access names of Points Of Interest along a segment of a river.
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42 */
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43 public class AnnotationArtifact extends StaticFLYSArtifact {
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44
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45 /** The logger for this class. */
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46 private static Logger logger = Logger.getLogger(WINFOArtifact.class);
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47
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48 /** The name of the artifact. */
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49 public static final String ARTIFACT_NAME = "annotation";
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50
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51 /* Name of cache. */
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52 //public static final String CACHE_NAME = "annotations";
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53
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54 @Override
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55 protected void initialize(Artifact artifact, Object context, CallMeta meta) {
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56 logger.debug("Initialize internal state of AnnotationArtifact with: " + artifact.identifier());
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57
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58 FLYSArtifact flys = (FLYSArtifact) artifact;
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59 addData("river", flys.getData("river"));
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60 /*
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61 logger.debug("Could set ranges to " +
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62 AnnotationsFactory.getAnnotationsBreadth(
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63 getRiver().getName())[0]);
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64 */
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65
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66 List<Facet> fs = new ArrayList<Facet>();
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67
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68 // TODO Add CallMeta (duplicate TODO in RiverAxisArtifact.java).
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69 DefaultState state = (DefaultState) getCurrentState(context);
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70 state.computeInit(this, hash(), context, meta, fs);
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71
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72 if (!fs.isEmpty()) {
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73 logger.debug("Facets to add in AnnotationsArtifact.initialize .");
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74 facets.put(getCurrentStateId(), fs);
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75 }
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76 else {
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77 logger.debug("No facets to add in AnnotationsArtifact.initialize .");
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78 }
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79 }
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80
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81
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82 @Override
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83 public double[] getDistance() {
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84 /** TODO In initialize(), access maximal range of river (via
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85 * AnnotationFactory) instead of overriding getDistance,
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86 * important for diagram generation. */
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87 return new double[] {0f, 1000f};
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88 }
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89
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90
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91 /**
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92 * Create the description of this AnnotationArtifact-instance.
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93 *
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94 * @param data Some data.
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95 * @param context The CallContext.
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96 *
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97 * @return the description of this artifact.
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98 */
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99 public Document describe(Document data, CallContext context) {
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100 logger.debug("Describe: the current state is: " + getCurrentStateId());
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101
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102 if (logger.isDebugEnabled()) {
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103 dumpArtifact();
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104 }
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105
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106 FLYSContext flysContext = getFlysContext(context);
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107 StateEngine stateEngine = (StateEngine) flysContext.get(
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108 FLYSContext.STATE_ENGINE_KEY);
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109
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110 Document description = XMLUtils.newDocument();
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111 XMLUtils.ElementCreator creator = new XMLUtils.ElementCreator(
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112 description,
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113 ArtifactNamespaceContext.NAMESPACE_URI,
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114 ArtifactNamespaceContext.NAMESPACE_PREFIX);
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115
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116 Element root = ProtocolUtils.createRootNode(creator);
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117 description.appendChild(root);
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118
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119 State current = getCurrentState(context);
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120
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121 ProtocolUtils.appendDescribeHeader(creator, root, identifier(), hash());
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122 ProtocolUtils.appendState(creator, root, current);
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123
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124 Element name = ProtocolUtils.createArtNode(
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125 creator, "name",
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126 new String[] { "value" },
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127 new String[] { getName() });
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128
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129 Element outs = ProtocolUtils.createArtNode(
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130 creator, "outputmodes", null, null);
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131 appendOutputModes(description, outs, context);
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132
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133 root.appendChild(name);
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134 root.appendChild(outs);
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135
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136 return description;
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137 }
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138
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139
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140 /**
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141 * Returns the name of the concrete artifact.
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142 *
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143 * @return the name of the concrete artifact.
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144 */
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145 public String getName() {
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146 return ARTIFACT_NAME;
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147 }
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148
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149
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150 /**
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151 * Append outputmode elements to given document.
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152 *
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153 * @param doc Document to add outputmodes to.
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154 * @param outs Element to add outputmode elements to.
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155 * @param context The given CallContext (mostly for internationalization).
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156 */
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157 protected void appendOutputModes(
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158 Document doc,
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159 Element outs,
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160 CallContext context)
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161 {
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162 List<String> stateIds = getPreviousStateIds();
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163
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164 XMLUtils.ElementCreator creator = new XMLUtils.ElementCreator(
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165 doc,
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166 ArtifactNamespaceContext.NAMESPACE_URI,
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167 ArtifactNamespaceContext.NAMESPACE_PREFIX);
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168
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169 FLYSContext flysContext = getFlysContext(context);
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170 StateEngine engine = (StateEngine) flysContext.get(
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171 FLYSContext.STATE_ENGINE_KEY);
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172
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173 for (String stateId: stateIds) {
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174 logger.debug("Append output modes for state: " + stateId);
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175 DefaultState state = (DefaultState) engine.getState(stateId);
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176
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177 List<Output> list = state.getOutputs();
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178 if (list == null || list.size() == 0) {
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179 logger.debug("-> No output modes for this state.");
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180 continue;
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181 }
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182
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183 List<Facet> fs = facets.get(stateId);
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184 if (fs == null || fs.size() == 0) {
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185 logger.debug("No facets found.");
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186 continue;
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187 }
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188
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189 logger.debug("Found " + fs.size() + " facets in previous states.");
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190
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191 List<Output> generated = generateOutputs(list, fs);
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192
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193 ProtocolUtils.appendOutputModes(doc, outs, generated);
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194 }
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195
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196 try {
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197 DefaultState cur = (DefaultState) getCurrentState(context);
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198 if (cur.validate(this, context)) {
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199 List<Output> list = cur.getOutputs();
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200 if (list != null && list.size() > 0) {
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201 logger.debug(
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202 "Append output modes for state: " + cur.getID());
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203
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204 List<Facet> fs = facets.get(cur.getID());
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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 else{
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214 logger.debug("Cannot append output to generated document.");
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215 }
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216 }
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217 else {
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218 logger.debug("No facets found for the current state.");
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219 }
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parents:
diff changeset
220 }
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parents:
diff changeset
221 }
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parents:
diff changeset
222 }
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diff changeset
223 catch (IllegalArgumentException iae) {
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224 // state is not valid, so we do not append its outputs.
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parents:
diff changeset
225 }
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parents:
diff changeset
226 }
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227
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228
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229 /**
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diff changeset
230 * Get Annotations for Points (opposed to segments) in river in range.
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parents:
diff changeset
231 *
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diff changeset
232 * @return list of Annotations.
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233 */
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diff changeset
234 public List<Annotation> getAnnotations() {
1032
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parents: 1026
diff changeset
235 String river = getRiver().getName();
1026
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diff changeset
236 logger.debug("Search annotations for river: " /*+ river*/);
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diff changeset
237 //Cache cache = CacheFactory.getCache(CACHE_NAME);
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diff changeset
238
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diff changeset
239 List<Annotation> annotations = new ArrayList<Annotation>();
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diff changeset
240
1032
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diff changeset
241 return getAnnotationsUncached(river);
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diff changeset
242 }
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Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 1026
diff changeset
243
abd2ab6dff4f Let AnnotationArtifact fetch "more correct" data.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
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diff changeset
244 /**
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diff changeset
245 * Gets Annotations from Session/Database.
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Felix Wolfsteller <felix.wolfsteller@intevation.de>
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diff changeset
246 *
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247 * @return List of Annotations fetched fresh from session/database.
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diff changeset
248 * @see DistanceInfoService to access cached documents.
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diff changeset
249 */
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diff changeset
250 protected List<Annotation> getAnnotationsUncached(String river) {
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diff changeset
251 List<Annotation> annotations = new ArrayList<Annotation>();
1026
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diff changeset
252 Session session = SessionHolder.acquire();
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diff changeset
253 try {
1032
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diff changeset
254 annotations = AnnotationsFactory.getPointAnnotations(river);
1026
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255 } finally {session.close(); SessionHolder.release();}
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256 return annotations;
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diff changeset
257 }
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258 }
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parents:
diff changeset
259 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org