Mercurial > dive4elements > river
annotate flys-artifacts/src/main/java/de/intevation/flys/artifacts/AnnotationArtifact.java @ 2004:94c4dd5aaf20
Made StaticState a bit more convenient to use.
flys-artifacts/trunk@3446 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author | Felix Wolfsteller <felix.wolfsteller@intevation.de> |
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date | Fri, 16 Dec 2011 14:11:50 +0000 |
parents | a8aa343799a2 |
children | 2d0b22602fc2 |
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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.w3c.dom.Document; |
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7 import org.w3c.dom.Element; |
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8 |
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9 import org.apache.log4j.Logger; |
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10 |
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11 import net.sf.ehcache.Cache; |
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12 |
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13 import de.intevation.artifacts.Artifact; |
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14 import de.intevation.artifacts.ArtifactNamespaceContext; |
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15 import de.intevation.artifacts.CallContext; |
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16 import de.intevation.artifacts.CallMeta; |
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17 |
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18 import de.intevation.artifactdatabase.ProtocolUtils; |
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19 import de.intevation.artifactdatabase.state.Facet; |
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20 import de.intevation.artifactdatabase.state.Output; |
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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 |
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24 import de.intevation.artifacts.common.utils.XMLUtils; |
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25 |
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26 import de.intevation.flys.artifacts.states.DefaultState; |
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27 import de.intevation.flys.artifacts.cache.CacheFactory; |
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28 import de.intevation.flys.artifacts.context.FLYSContext; |
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29 import de.intevation.flys.artifacts.model.AnnotationsFactory; |
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30 |
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31 import de.intevation.flys.model.Annotation; |
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32 |
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33 import de.intevation.flys.utils.FLYSUtils; |
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34 |
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35 /** |
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36 * Artifact to access names of Points Of Interest along a segment of a river. |
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37 */ |
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38 public class AnnotationArtifact extends StaticFLYSArtifact { |
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39 |
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40 /** The logger for this class. */ |
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41 private static Logger logger = Logger.getLogger(AnnotationArtifact.class); |
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42 |
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43 /** The name of the artifact. */ |
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44 public static final String ARTIFACT_NAME = "annotation"; |
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45 |
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46 /* Name of cache. */ |
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47 public static final String CACHE_NAME = "annotations"; |
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48 |
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49 @Override |
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50 protected void initialize(Artifact artifact, Object context, |
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51 CallMeta meta) { |
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52 logger.debug("AnnotationArtifact.initialize, id: " |
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53 + artifact.identifier()); |
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54 |
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55 FLYSArtifact flys = (FLYSArtifact) artifact; |
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56 addData("river", flys.getData("river")); |
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57 |
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58 List<Facet> fs = new ArrayList<Facet>(); |
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59 |
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60 // TODO Add CallMeta (duplicate TODO in RiverAxisArtifact.java). |
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61 DefaultState state = (DefaultState) getCurrentState(context); |
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62 state.computeInit(this, hash(), context, meta, fs); |
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63 |
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64 if (!fs.isEmpty()) { |
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65 logger.debug("Facets to add in AnnotationsArtifact.initialize ."); |
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66 facets.put(getCurrentStateId(), fs); |
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67 } |
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68 else { |
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69 logger.debug("No facets to add in AnnotationsArtifact.initialize ."); |
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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 public double[] getDistance() { |
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75 /** TODO In initialize(), access maximal range of river (via |
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76 * AnnotationFactory) instead of overriding getDistance, |
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77 * important for diagram generation. */ |
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78 return new double[] {0f, 1000f}; |
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79 } |
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80 |
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81 |
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82 /** |
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83 * Create the description of this AnnotationArtifact-instance. |
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84 * |
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85 * @param data Some data. |
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86 * @param context The CallContext. |
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87 * |
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88 * @return the description of this artifact. |
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89 */ |
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90 @Override |
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91 public Document describe(Document data, CallContext context) { |
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92 logger.debug("Describe: the current state is: " + getCurrentStateId()); |
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93 |
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94 if (logger.isDebugEnabled()) { |
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95 dumpArtifact(); |
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96 } |
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97 |
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98 FLYSContext flysContext = FLYSUtils.getFlysContext(context); |
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99 StateEngine stateEngine = (StateEngine) flysContext.get( |
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100 FLYSContext.STATE_ENGINE_KEY); |
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101 |
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102 Document description = XMLUtils.newDocument(); |
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103 XMLUtils.ElementCreator creator = new XMLUtils.ElementCreator( |
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104 description, |
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105 ArtifactNamespaceContext.NAMESPACE_URI, |
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106 ArtifactNamespaceContext.NAMESPACE_PREFIX); |
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107 |
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108 Element root = ProtocolUtils.createRootNode(creator); |
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109 description.appendChild(root); |
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110 |
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111 State current = getCurrentState(context); |
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112 |
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113 ProtocolUtils.appendDescribeHeader(creator, root, identifier(), hash()); |
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114 ProtocolUtils.appendState(creator, root, current); |
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115 |
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116 Element name = ProtocolUtils.createArtNode( |
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117 creator, "name", |
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118 new String[] { "value" }, |
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119 new String[] { getName() }); |
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120 |
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121 Element outs = ProtocolUtils.createArtNode( |
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122 creator, "outputmodes", null, null); |
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123 appendOutputModes(description, outs, context); |
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124 |
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125 root.appendChild(name); |
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126 root.appendChild(outs); |
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127 |
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128 return description; |
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129 } |
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130 |
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131 |
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132 /** |
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133 * Returns the name of the concrete artifact. |
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134 * |
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135 * @return the name of the concrete artifact. |
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136 */ |
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137 public String getName() { |
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138 return ARTIFACT_NAME; |
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139 } |
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140 |
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141 |
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142 /** |
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143 * Append outputmode elements to given document. |
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144 * |
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145 * @param doc Document to add outputmodes to. |
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146 * @param outs Element to add outputmode elements to. |
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147 * @param context The given CallContext (mostly for internationalization). |
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148 */ |
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149 //@Override |
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150 protected void appendOutputModes( |
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151 Document doc, |
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152 Element outs, |
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153 CallContext context) |
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154 { |
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155 List<String> stateIds = getPreviousStateIds(); |
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156 |
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157 XMLUtils.ElementCreator creator = new XMLUtils.ElementCreator( |
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158 doc, |
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159 ArtifactNamespaceContext.NAMESPACE_URI, |
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160 ArtifactNamespaceContext.NAMESPACE_PREFIX); |
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161 |
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162 FLYSContext flysContext = FLYSUtils.getFlysContext(context); |
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163 StateEngine engine = (StateEngine) flysContext.get( |
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164 FLYSContext.STATE_ENGINE_KEY); |
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165 |
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166 for (String stateId: stateIds) { |
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167 logger.debug("Append output modes for state: " + stateId); |
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168 DefaultState state = (DefaultState) engine.getState(stateId); |
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169 |
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170 List<Output> list = state.getOutputs(); |
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171 if (list == null || list.size() == 0) { |
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172 logger.debug("-> No output modes for this state."); |
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173 continue; |
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174 } |
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175 |
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176 List<Facet> fs = facets.get(stateId); |
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177 if (fs == null || fs.size() == 0) { |
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178 logger.debug("No facets found."); |
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179 continue; |
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180 } |
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181 |
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182 logger.debug("Found " + fs.size() + " facets in previous states."); |
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183 |
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184 List<Output> generated = generateOutputs(list, fs); |
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185 |
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186 ProtocolUtils.appendOutputModes(doc, outs, generated); |
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187 } |
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188 |
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189 try { |
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190 DefaultState cur = (DefaultState) getCurrentState(context); |
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191 if (cur.validate(this)) { |
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192 List<Output> list = cur.getOutputs(); |
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193 if (list != null && list.size() > 0) { |
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194 logger.debug( |
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195 "Append output modes for state: " + cur.getID()); |
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196 |
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197 List<Facet> fs = facets.get(cur.getID()); |
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198 if (fs != null && fs.size() > 0) { |
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199 List<Output> generated = generateOutputs(list, fs); |
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200 |
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201 logger.debug("Found " + fs.size() + " current facets."); |
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202 if (!generated.isEmpty()) { |
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203 ProtocolUtils.appendOutputModes( |
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204 doc, outs, generated); |
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205 } |
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206 else{ |
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207 logger.debug("Cannot append output to generated document."); |
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208 } |
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209 } |
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210 else { |
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211 logger.debug("No facets found for the current state."); |
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212 } |
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213 } |
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214 } |
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215 } |
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216 catch (IllegalArgumentException iae) { |
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217 // state is not valid, so we do not append its outputs. |
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218 } |
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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 * Get Annotations for Points (opposed to segments) in river in range. |
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224 * |
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225 * @return list of Annotations. |
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226 */ |
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227 public List<Annotation> getAnnotations() { |
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228 String river = FLYSUtils.getRiver(this).getName(); |
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229 logger.debug("Search annotations for river: " + river); |
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230 |
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231 Cache cache = CacheFactory.getCache(CACHE_NAME); |
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232 String key = river; |
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233 Object old = null; |
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234 |
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235 if (cache != null) { |
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236 logger.debug("We are using a cache for annotations."); |
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237 |
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238 net.sf.ehcache.Element element = cache.get(key); |
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239 if (element != null) { |
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240 logger.info("Fetched annotations from cache."); |
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241 old = element.getValue(); |
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242 } |
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243 } |
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244 |
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245 if (old == null) { |
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246 old = getAnnotationsUncached(river); |
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247 } |
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248 |
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249 if (cache != null && old != null) { |
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250 cache.put(new net.sf.ehcache.Element(key, old)); |
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251 } |
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252 |
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253 return old != null |
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254 ? (List<Annotation>) old |
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255 : new ArrayList<Annotation>(); |
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256 } |
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257 |
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258 /** |
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259 * Gets Annotations from Session/Database. |
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260 * |
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261 * @return List of Annotations fetched fresh from session/database. |
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262 * @see DistanceInfoService to access cached documents. |
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263 */ |
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264 protected List<Annotation> getAnnotationsUncached(String river) { |
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265 logger.info("Fetch annotations from database."); |
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266 |
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267 List<Annotation> annotations = new ArrayList<Annotation>(); |
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268 annotations = AnnotationsFactory.getPointAnnotations(river); |
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269 |
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270 return annotations; |
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271 } |
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272 } |
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273 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |