Mercurial > dive4elements > river

annotate artifacts/src/main/java/org/dive4elements/river/collections/AttributeWriter.java @ 6140:60b94dec104b

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Add handling of bound artifacts. When an artifact is bound to an out its facets will only be shown in that Out. They will be removed in the blackboard pass and marked as incompatible by the AttributeWriter
author Andre Heinecke <aheinecke@intevation.de>
date Fri, 31 May 2013 15:29:30 +0200
parents af13ceeba52a
children d4a3031448d3
rev   line source
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Sascha L. Teichmann <teichmann@intevation.de>
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1 /* Copyright (C) 2011, 2012, 2013 by Bundesanstalt für Gewässerkunde
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2 * Software engineering by Intevation GmbH
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3 *
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4 * This file is Free Software under the GNU AGPL (>=v3)
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5 * and comes with ABSOLUTELY NO WARRANTY! Check out the
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6 * documentation coming with Dive4Elements River for details.
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7 */
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8
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9 package org.dive4elements.river.collections;
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10
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11 import java.util.ArrayList;
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12 import java.util.List;
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13 import java.util.HashMap;
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14 import java.util.Map;
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15
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16 import org.apache.log4j.Logger;
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17
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18 import org.dive4elements.artifacts.ArtifactDatabase;
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19 import org.dive4elements.artifacts.ArtifactDatabaseException;
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20
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21 import org.dive4elements.artifactdatabase.state.Facet;
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22 import org.dive4elements.artifactdatabase.state.FacetActivity;
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23 import org.dive4elements.artifactdatabase.state.Output;
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24
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25 import org.dive4elements.river.artifacts.D4EArtifact;
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26 import org.dive4elements.river.artifacts.model.ManagedFacet;
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27
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28 /**
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29 * Create attribute- element of describe document of an ArtifactCollection.
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30 * The attribute-element contains the merged output of all outputmodes and
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31 * facets that are part of the collection.
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32 */
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33 public class AttributeWriter {
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34
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35 /** ArtifactDatabase used to fetch Artifacts. */
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36 protected ArtifactDatabase db = null;
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37
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38 protected Map<String, Output> oldAttr;
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39
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40 protected Map<String, Output> newAttr;
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41
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42 /** List of already seen facets. */
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43 protected List<Facet> oldFacets;
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44
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45 /** List of "new" facets. */
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46 protected List<Facet> newFacets;
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47
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48 /**
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49 * "Compatibility matrix", mapws list of facet names to output names.
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50 * Any facet that is not found in the list for a specific output will
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51 * not be added to the resulting document.
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52 */
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53 protected Map<String, List<String>> compatibilities;
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54
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55
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56 /** The result of the <i>write()</i> operation.*/
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57 protected CollectionAttribute attribute;
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58
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59
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60 private static Logger logger = Logger.getLogger(AttributeWriter.class);
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61
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62
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63 /**
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64 * Create a AttributeWriter.
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65 * Attributes not present in newAttr will not be included in the document.
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66 * @param db Database to fetch artifacts.
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67 * @param oldAttr "Old" (possibly user-changed) outputs.
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68 * @param newAttr "New" (eventually re-read in its original, unchanged
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69 * form) outputs.
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70 * @param matrix Compatibility matrix, mapping output names to list of
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71 * facet names that can be included in this out.
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72 */
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73 public AttributeWriter(
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74 ArtifactDatabase db,
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75 CollectionAttribute attribute,
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76 Map<String, Output> oldAttr,
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77 List<Facet> oldFacets,
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78 Map<String, Output> newAttr,
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79 List<Facet> newFacets,
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80 Map<String, List<String>> matrix)
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81 {
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82 this.db = db;
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83 this.attribute = attribute;
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84 this.oldAttr = oldAttr;
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85 this.newAttr = newAttr;
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86 this.oldFacets = oldFacets;
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87 this.newFacets = newFacets;
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88 this.compatibilities = matrix;
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89 }
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90
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91
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92 /**
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93 * Create document by merging outputs given in
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94 * constructor.
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95 *
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96 * The "new" set rules about existance of attributes, so anything not
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97 * present in it will not be included in the resulting document.
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98 * The "old" set rules about the content of attributes (as user changes
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99 * are recorded here and not in the new set).
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100 *
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101 * @return document with merged outputs as described.
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102 */
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103 protected CollectionAttribute write() {
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104
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105 boolean debug = logger.isDebugEnabled();
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106
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107 for (Map.Entry<String, Output> entry: newAttr.entrySet()) {
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108 String outName = entry.getKey();
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109 Output a = entry.getValue();
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110
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111 if (!attribute.hasOutput(outName)) {
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112 attribute.addOutput(outName, a);
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113 }
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114
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115 attribute.clearFacets(outName);
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116
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117 if (debug) {
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118 logger.debug("Merge Output: " + outName);
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119 logger.debug(" old Facets: " + oldFacets.size());
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120 logger.debug(" new Facets: " + newFacets.size());
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121 }
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122
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123 writeOutput(a.getName(), newFacets, oldFacets);
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124 }
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125
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126 // THIS CALL IS ABSOLUTELY NECESSARY!
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127 attribute.cleanEmptyOutputs();
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128
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129 return attribute;
346
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130 }
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131
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132
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133 /**
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134 * @param outputName the "new" outputs name
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135 * @param newOutFacets Facets of the new outputs
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136 * @param oldOutFacets Facets of the old outputs (can be null)
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137 */
346
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138 protected void writeOutput(
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139 String outputName,
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140 List<Facet> newOutFacets,
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141 List<Facet> oldOutFacets
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142 ) {
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143 List<String> compatFacets = this.compatibilities.get(outputName);
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144
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145 if (logger.isDebugEnabled() && compatFacets != null) {
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146 logger.debug("Compabitle Facets:");
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147 for (String compatible: compatFacets) {
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148 logger.debug( "- " + compatible);
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149 }
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150 }
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151
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152 try {
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153 writeFacets(outputName, newOutFacets, oldOutFacets, compatFacets);
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154 }
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155 catch (ArtifactDatabaseException ade) {
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156 logger.error(ade, ade);
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157 }
346
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158 }
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159
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160
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161 /**
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162 * @param newFacets the new facets
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163 * @param oldFacets the old facets
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164 * @param compatibleFacets List of facets to accept
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165 * @return true if any facets are written to the out.
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166 */
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167 protected boolean writeFacets(
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168 String outputName,
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169 List<Facet> newFacets,
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170 List<Facet> oldFacets,
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171 List<String> compatibleFacets)
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172 throws ArtifactDatabaseException
346
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173 {
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174 if (compatibleFacets == null) {
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175 logger.warn("No compatible facets, not generating out " + outputName + ".");
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176 return false;
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177 }
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178
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179 int num = newFacets.size();
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180
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181 // Add all new Facets either in their old state or (if really
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182 // new) as they are.
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183 List<ManagedFacet> currentFacets = new ArrayList<ManagedFacet>();
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184 List<ManagedFacet> genuinelyNewFacets = new ArrayList<ManagedFacet>();
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185
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186 boolean debug = logger.isDebugEnabled();
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187 if (debug) {
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188 logger.debug("Compatible facets are " + compatibleFacets);
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189 }
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190
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191 for (Facet fac: newFacets) {
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192 ManagedFacet facet = (ManagedFacet) fac;
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193
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194 if (debug) {
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195 logger.debug("Try to add Facet: " + facet.getName());
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196 }
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197
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198 if (!compatibleFacets.contains(facet.getName())) {
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199 logger.debug("Have incompatible facet, skip: " + facet.getName());
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200 continue;
6140
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diff changeset
201 } else if (facet.getBoundToOut() != null &&
60b94dec104b Add handling of bound artifacts.
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202 !facet.getBoundToOut().equals(outputName)) {
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203 logger.debug("Skip facet " + facet.getName() +
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204 " because it is bound to: " + facet.getBoundToOut());
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diff changeset
205 continue;
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diff changeset
206 } else {
60b94dec104b Add handling of bound artifacts.
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207 logger.debug("Facet is bound to: " + facet.getBoundToOut());
4025
721d55bdab9e Add warning if no compatible facet is found
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diff changeset
208 logger.debug("Have compatible facet: " + facet.getName());
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diff changeset
209 }
346
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210
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211 ManagedFacet picked = pickFacet(facet, oldFacets);
1785
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212
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213 if (facet.equals(picked)) {
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diff changeset
214 genuinelyNewFacets.add(picked);
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215 }
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216 else {
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217 currentFacets.add(picked);
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218 }
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219 }
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220
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221 FacetActivity.Registry registry = FacetActivity.Registry.getInstance();
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222
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223 // With each genuinely new Facet, figure out whether it comes to live
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diff changeset
224 // in/activate.
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diff changeset
225 for (ManagedFacet newMF: genuinelyNewFacets) {
5867
59ff03ff48f1 River artifacts: Renamed FLYSArtifact(Collection) to D4EArtifact(Collection).
Sascha L. Teichmann <teichmann@intevation.de>
parents: 5863
diff changeset
226 D4EArtifact flys =
59ff03ff48f1 River artifacts: Renamed FLYSArtifact(Collection) to D4EArtifact(Collection).
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diff changeset
227 (D4EArtifact)db.getRawArtifact(newMF.getArtifact());
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228
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diff changeset
229 boolean isActive = registry.isInitialActive(
c3cd414982fe Adjusted to follow the Chain-of-responsibility pattern in figuring out facet activities.
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diff changeset
230 flys.getName(), flys, newMF, outputName);
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diff changeset
231
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diff changeset
232 newMF.setActive(isActive ? 1 : 0);
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233 }
1976
0b466bd4ab24 Introduced a CollectionAttribute class that stores the information provided by the Collection's attribute document.
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diff changeset
234
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diff changeset
235 // For each genuinely new Facet check positional conflicts.
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diff changeset
236 for (ManagedFacet newMF: genuinelyNewFacets) {
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diff changeset
237 boolean conflicts = true;
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diff changeset
238 // Loop until all conflicts resolved.
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diff changeset
239 while (conflicts) {
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diff changeset
240 conflicts = false;
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diff changeset
241 for (ManagedFacet oldMF: currentFacets) {
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diff changeset
242 if (newMF.getPosition() == oldMF.getPosition()) {
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diff changeset
243 conflicts = true;
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diff changeset
244 if (debug) {
afc7bfb4800b Use the new infrastructure to figure out if a facet should
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diff changeset
245 logger.debug(
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diff changeset
246 "Positional conflict while merging " +
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diff changeset
247 "facets, pushing newest facet 1 up (" +
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diff changeset
248 newMF.getPosition() + ")");
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diff changeset
249 }
1639
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diff changeset
250 newMF.setPosition(newMF.getPosition() + 1);
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diff changeset
251 break;
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diff changeset
252 }
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diff changeset
253 }
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diff changeset
254 }
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diff changeset
255 currentFacets.add(newMF);
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diff changeset
256 }
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257
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258 // Fill/correct "gaps" (e.g. position 1,2,5 are taken, after gap filling
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259 // expect positions 1,2,3 [5->3])
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260 // Preparations to be able to detect gaps.
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261 Map<Integer, ManagedFacet> mfmap =
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262 new HashMap<Integer, ManagedFacet>();
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263 int max = 0;
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264 for (ManagedFacet mf: currentFacets) {
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265 int pos = mf.getPosition();
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266 mfmap.put(Integer.valueOf(pos), mf);
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267 if (pos > max) max = pos;
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268 }
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269
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270 // Finally do gap correction.
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271 if (max != currentFacets.size()) {
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272 int gap = 0;
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273 for (int i = 1; i <= max; i++) {
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274 ManagedFacet mf = mfmap.get(Integer.valueOf(i));
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275 if (mf == null) {
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276 gap++;
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277 continue;
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278 }
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279 mf.setPosition(mf.getPosition() - gap);
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280 }
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281 }
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282
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283 // Now add all facets.
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284 for (ManagedFacet oldMF: currentFacets) {
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285 attribute.addFacet(outputName, oldMF);
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286 }
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287
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288 return !currentFacets.isEmpty();
346
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289 }
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290
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291
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292 /**
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293 * Returns the facet to be added to Document.
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294 * Return the new facet only if the "same" facet was not present before.
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295 * Return the "old" facet otherwise (user-defined information sticks
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296 * to it).
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297 * @param facet the new facet.
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298 * @param oldFacets the old facets, new facet is compared against each of
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299 * these.
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300 * @return facet if genuinely new, matching old facet otherwise.
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301 */
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302 protected ManagedFacet pickFacet(ManagedFacet facet, List<Facet> oldFacets)
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303 {
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304 if (oldFacets == null) {
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305 logger.debug("No old facets to compare a new to found.");
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306 return facet;
346
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307 }
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308
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309 String hash = facet.getName() + facet.getIndex() + facet.getArtifact();
346
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310
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311 // Compare "new" facet with all old facets.
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312 // Take oldFacet if that facet was already present (otherwise
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313 // information is lost, the new one otherwise.
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314 for (Facet oFacet: oldFacets) {
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315 ManagedFacet oldFacet = (ManagedFacet) oFacet;
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316 String oldHash = oldFacet.getName()
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317 + oldFacet.getIndex()
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318 + oldFacet.getArtifact();
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319 if (hash.equals(oldHash)) {
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320 return oldFacet;
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321 }
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322 }
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323 return facet;
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324 }
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325 }
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853dceead0f4 Only generate facets when needed.
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326 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf-8 :
http://dive4elements.wald.intevation.org