Mercurial > dive4elements > river
annotate flys-artifacts/src/main/java/de/intevation/flys/collections/AttributeWriter.java @ 3561:f7e6b35f0b5c
Partly reverted Double->double change of clins.
flys-artifacts/trunk@5158 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author | Sascha L. Teichmann <sascha.teichmann@intevation.de> |
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date | Sun, 29 Jul 2012 16:04:40 +0000 |
parents | c3cd414982fe |
children | 721d55bdab9e |
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1 package de.intevation.flys.collections; |
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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 import java.util.HashMap; |
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6 import java.util.Map; |
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7 |
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8 import org.apache.log4j.Logger; |
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9 |
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10 import de.intevation.artifacts.ArtifactDatabase; |
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11 import de.intevation.artifacts.ArtifactDatabaseException; |
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12 |
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13 import de.intevation.artifactdatabase.state.Facet; |
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14 import de.intevation.artifactdatabase.state.FacetActivity; |
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15 import de.intevation.artifactdatabase.state.Output; |
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16 |
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17 import de.intevation.flys.artifacts.FLYSArtifact; |
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18 import de.intevation.flys.artifacts.model.ManagedFacet; |
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19 |
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20 /** |
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21 * Create attribute- element of describe document of an ArtifactCollection. |
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22 * The attribute-element contains the merged output of all outputmodes and |
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23 * facets that are part of the collection. |
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24 */ |
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25 public class AttributeWriter { |
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26 |
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27 /** ArtifactDatabase used to fetch Artifacts. */ |
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28 protected ArtifactDatabase db = null; |
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29 |
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30 protected Map<String, Output> oldAttr; |
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31 |
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32 protected Map<String, Output> newAttr; |
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33 |
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34 /** List of already seen facets. */ |
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35 protected List<Facet> oldFacets; |
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36 |
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37 /** List of "new" facets. */ |
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38 protected List<Facet> newFacets; |
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39 |
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40 /** |
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41 * "Compatibility matrix", mapws list of facet names to output names. |
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42 * Any facet that is not found in the list for a specific output will |
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43 * not be added to the resulting document. |
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44 */ |
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45 protected Map<String, List<String>> compatibilities; |
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46 |
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47 |
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48 /** The result of the <i>write()</i> operation.*/ |
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49 protected CollectionAttribute attribute; |
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50 |
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51 |
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52 private static Logger logger = Logger.getLogger(AttributeWriter.class); |
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53 |
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54 |
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55 /** |
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56 * Create a AttributeWriter. |
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57 * Attributes not present in newAttr will not be included in the document. |
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58 * @param db Database to fetch artifacts. |
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59 * @param oldAttr "Old" (possibly user-changed) outputs. |
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60 * @param newAttr "New" (eventually re-read in its original, unchanged |
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61 * form) outputs. |
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62 */ |
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63 public AttributeWriter( |
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64 ArtifactDatabase db, |
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65 CollectionAttribute attribute, |
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66 Map<String, Output> oldAttr, |
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67 List<Facet> oldFacets, |
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68 Map<String, Output> newAttr, |
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69 List<Facet> newFacets, |
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70 Map<String, List<String>> matrix) |
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71 { |
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72 this.db = db; |
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73 this.attribute = attribute; |
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74 this.oldAttr = oldAttr; |
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75 this.newAttr = newAttr; |
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76 this.oldFacets = oldFacets; |
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77 this.newFacets = newFacets; |
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78 this.compatibilities = matrix; |
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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 document by merging outputs given in |
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84 * constructor. |
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85 * |
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86 * The "new" set rules about existance of attributes, so anything not |
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87 * present in it will not be included in the resulting document. |
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88 * The "old" set rules about the content of attributes (as user changes |
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89 * are recorded here and not in the new set). |
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90 * |
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91 * @return document with merged outputs as described. |
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92 */ |
1976
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parents:
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93 protected CollectionAttribute write() { |
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94 |
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95 boolean debug = logger.isDebugEnabled(); |
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96 |
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97 for (Map.Entry<String, Output> entry: newAttr.entrySet()) { |
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98 String outName = entry.getKey(); |
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99 Output a = entry.getValue(); |
1996
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100 |
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101 Output exists = attribute.getOutput(outName); |
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102 if (exists == null) { |
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103 attribute.addOutput(outName, a); |
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104 } |
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105 |
1993
85132c9edd64
Make reuse of the old CollectionAttribute during the describe() operation of FLYSArtifactCollection - remove the old facets only.
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1984
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106 attribute.clearFacets(outName); |
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107 |
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108 if (debug) { |
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109 logger.debug("Merge Output: " + outName); |
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110 logger.debug(" old Facets: " + oldFacets.size()); |
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111 logger.debug(" new Facets: " + newFacets.size()); |
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112 } |
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113 |
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114 writeOutput(a.getName(), newFacets, oldFacets); |
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115 } |
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116 |
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117 // THIS CALL IS ABSOLUTELY NECESSARY! |
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118 attribute.cleanEmptyOutputs(); |
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119 |
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120 return attribute; |
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121 } |
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122 |
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123 |
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124 /** |
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125 * @param outputName the "new" outputs name |
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126 * @param newOutFacets Facets of the new outputs |
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127 * @param oldOutFacets Facets of the old outputs (can be null) |
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128 */ |
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129 protected void writeOutput( |
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130 String outputName, |
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131 List<Facet> newOutFacets, |
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132 List<Facet> oldOutFacets |
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133 ) { |
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134 List<String> compatFacets = this.compatibilities.get(outputName); |
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135 |
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136 if (logger.isDebugEnabled() && compatFacets != null) { |
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137 logger.debug("Compabitle Facets:"); |
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138 for (String compatible: compatFacets) { |
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139 logger.debug( "- " + compatible); |
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140 } |
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141 } |
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142 |
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143 try { |
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144 writeFacets(outputName, newOutFacets, oldOutFacets, compatFacets); |
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145 } |
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146 catch (ArtifactDatabaseException ade) { |
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147 logger.error(ade, ade); |
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148 } |
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149 } |
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150 |
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151 |
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152 /** |
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153 * @param newFacets the new facets |
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154 * @param oldFacets the old facets |
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155 * @param compatibleFacets List of facets to accept |
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156 * @return true if any facets are written to the out. |
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157 */ |
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158 protected boolean writeFacets( |
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159 String outputName, |
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160 List<Facet> newFacets, |
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161 List<Facet> oldFacets, |
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162 List<String> compatibleFacets) |
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163 throws ArtifactDatabaseException |
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164 { |
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165 if (compatibleFacets == null) { |
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166 logger.warn("No compatible facets, not generating out."); |
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167 return false; |
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168 } |
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169 |
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170 int num = newFacets.size(); |
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171 |
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172 // Add all new Facets either in their old state or (if really |
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173 // new) as they are. |
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174 List<ManagedFacet> currentFacets = new ArrayList<ManagedFacet>(); |
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175 List<ManagedFacet> genuinelyNewFacets = new ArrayList<ManagedFacet>(); |
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176 |
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177 boolean debug = logger.isDebugEnabled(); |
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178 |
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179 for (int i = 0; i < num; i++) { |
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180 ManagedFacet facet = (ManagedFacet) newFacets.get(i); |
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181 |
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182 if (debug) { |
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183 logger.debug("Try to add Facet: " + facet.getName()); |
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184 } |
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185 |
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186 if (!compatibleFacets.contains(facet.getName())) { |
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187 //logger.debug("Have incompatible facet, skip: " + facet.getName()); |
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188 continue; |
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189 } |
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190 //else logger.debug("Have compatible facet: " + facet.getName()); |
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191 |
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192 ManagedFacet picked = pickFacet(facet, oldFacets); |
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193 |
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194 if (facet.equals(picked)) { |
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195 genuinelyNewFacets.add(picked); |
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196 } |
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197 else { |
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198 currentFacets.add(picked); |
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199 } |
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200 } |
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201 |
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202 FacetActivity.Registry registry = FacetActivity.Registry.getInstance(); |
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203 |
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204 // With each genuinely new Facet, figure out whether it comes to live |
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205 // in/activate. |
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206 for (ManagedFacet newMF: genuinelyNewFacets) { |
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207 FLYSArtifact flys = |
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208 (FLYSArtifact)db.getRawArtifact(newMF.getArtifact()); |
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209 |
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210 boolean isActive = registry.isInitialActive( |
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211 flys.getName(), flys, newMF, outputName); |
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212 |
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213 newMF.setActive(isActive ? 1 : 0); |
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214 } |
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215 |
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216 // For each genuinely new Facet check positional conflicts. |
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217 for (ManagedFacet newMF: genuinelyNewFacets) { |
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218 boolean conflicts = true; |
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219 // Loop until all conflicts resolved. |
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220 while (conflicts) { |
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221 conflicts = false; |
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222 for (ManagedFacet oldMF: currentFacets) { |
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223 if (newMF.getPosition() == oldMF.getPosition()) { |
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224 conflicts = true; |
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225 if (debug) { |
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226 logger.debug( |
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227 "Positional conflict while merging " + |
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228 "facets, pushing newest facet 1 up (" + |
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229 newMF.getPosition() + ")"); |
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230 } |
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231 newMF.setPosition(newMF.getPosition() + 1); |
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232 break; |
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233 } |
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234 } |
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235 } |
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236 currentFacets.add(newMF); |
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237 } |
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238 |
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239 // Fill/correct "gaps" (e.g. position 1,2,5 are taken, after gap filling |
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240 // expect positions 1,2,3 [5->3]) |
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241 // Preparations to be able to detect gaps. |
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242 Map<Integer, ManagedFacet> mfmap = |
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243 new HashMap<Integer, ManagedFacet>(); |
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244 int max = 0; |
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245 for (ManagedFacet mf: currentFacets) { |
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246 int pos = mf.getPosition(); |
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247 mfmap.put(Integer.valueOf(pos), mf); |
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248 if (pos > max) max = pos; |
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249 } |
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250 |
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251 // Finally do gap correction. |
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252 if (max != currentFacets.size()) { |
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253 int gap = 0; |
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254 for (int i = 1; i <= max; i++) { |
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255 ManagedFacet mf = mfmap.get(Integer.valueOf(i)); |
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256 if (mf == null) { |
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257 gap++; |
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258 continue; |
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259 } |
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260 mf.setPosition(mf.getPosition() - gap); |
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261 } |
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262 } |
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263 |
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264 // Now add all facets. |
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265 for (ManagedFacet oldMF: currentFacets) { |
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266 attribute.addFacet(outputName, oldMF); |
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267 } |
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268 |
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269 return !currentFacets.isEmpty(); |
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270 } |
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271 |
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272 |
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273 /** |
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274 * Returns the facet to be added to Document. |
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275 * Return the new facet only if the "same" facet was not present before. |
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276 * Return the "old" facet otherwise (user-defined information sticks |
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277 * to it). |
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278 * @param facet the new facet. |
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279 * @param oldFacets the old facets, new facet is compared against each of |
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280 * these. |
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281 * @return facet if genuinely new, matching old facet otherwise. |
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282 */ |
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283 protected ManagedFacet pickFacet(ManagedFacet facet, List<Facet> oldFacets) |
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284 { |
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285 if (oldFacets == null) { |
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286 logger.debug("No old facets to compare a new to found."); |
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287 return facet; |
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288 } |
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289 |
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290 String hash = facet.getName() + facet.getIndex() + facet.getArtifact(); |
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291 |
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292 // Compare "new" facet with all old facets. |
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293 // Take oldFacet if that facet was already present (otherwise |
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294 // information is lost, the new one otherwise. |
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295 for (Facet oFacet: oldFacets) { |
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296 ManagedFacet oldFacet = (ManagedFacet) oFacet; |
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297 String oldHash = oldFacet.getName() |
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298 + oldFacet.getIndex() |
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299 + oldFacet.getArtifact(); |
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300 if (hash.equals(oldHash)) { |
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301 return oldFacet; |
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302 } |
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303 } |
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304 return facet; |
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305 } |
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306 } |
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307 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf-8 : |