Mercurial > dive4elements > river
annotate flys-artifacts/src/main/java/de/intevation/flys/artifacts/AnnotationArtifact.java @ 1032:abd2ab6dff4f
Let AnnotationArtifact fetch "more correct" data.
flys-artifacts/trunk@2492 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author | Felix Wolfsteller <felix.wolfsteller@intevation.de> |
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date | Fri, 12 Aug 2011 12:54:19 +0000 |
parents | a39511688679 |
children | 821aaceb2776 |
rev | line source |
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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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220 } |
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221 } |
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222 } |
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223 catch (IllegalArgumentException iae) { |
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224 // state is not valid, so we do not append its outputs. |
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225 } |
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226 } |
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227 |
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228 |
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229 /** |
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230 * Get Annotations for Points (opposed to segments) in river in range. |
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231 * |
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232 * @return list of Annotations. |
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233 */ |
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234 public List<Annotation> getAnnotations() { |
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235 String river = getRiver().getName(); |
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236 logger.debug("Search annotations for river: " /*+ river*/); |
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237 //Cache cache = CacheFactory.getCache(CACHE_NAME); |
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238 |
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239 List<Annotation> annotations = new ArrayList<Annotation>(); |
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240 |
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241 return getAnnotationsUncached(river); |
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242 } |
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243 |
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244 /** |
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245 * Gets Annotations from Session/Database. |
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246 * |
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247 * @return List of Annotations fetched fresh from session/database. |
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248 * @see DistanceInfoService to access cached documents. |
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249 */ |
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250 protected List<Annotation> getAnnotationsUncached(String river) { |
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251 List<Annotation> annotations = new ArrayList<Annotation>(); |
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252 Session session = SessionHolder.acquire(); |
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253 try { |
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254 annotations = AnnotationsFactory.getPointAnnotations(river); |
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255 } finally {session.close(); SessionHolder.release();} |
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256 return annotations; |
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257 } |
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258 } |
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259 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |