bundles/org.simantics.diagram/src/org/simantics/diagram/symbolcontribution/IndexRootSymbolProviderFactory.java

   1 /*******************************************************************************\r
   2  * Copyright (c) 2007, 2010 Association for Decentralized Information Management\r
   3  * in Industry THTH ry.\r
   4  * All rights reserved. This program and the accompanying materials\r
   5  * are made available under the terms of the Eclipse Public License v1.0\r
   6  * which accompanies this distribution, and is available at\r
   7  * http://www.eclipse.org/legal/epl-v10.html\r
   8  *\r
   9  * Contributors:\r
  10  *     VTT Technical Research Centre of Finland - initial API and implementation\r
  11  *******************************************************************************/\r
  12 package org.simantics.diagram.symbolcontribution;\r
  13 \r
  14 import java.util.ArrayList;\r
  15 import java.util.Collection;\r
  16 \r
  17 import org.simantics.db.ReadGraph;\r
  18 import org.simantics.db.Resource;\r
  19 import org.simantics.db.common.request.BinaryRead;\r
  20 import org.simantics.db.exception.DatabaseException;\r
  21 import org.simantics.db.layer0.adapter.Instances;\r
  22 import org.simantics.diagram.stubs.DiagramResource;\r
  23 import org.simantics.diagram.symbollibrary.ISymbolGroup;\r
  24 import org.simantics.layer0.Layer0;\r
  25 \r
  26 /**\r
  27  * \r
  28  * @author Antti Villberg\r
  29  */\r
  30 public class IndexRootSymbolProviderFactory implements SymbolProviderFactory {\r
  31                 \r
  32     Resource indexRoot;\r
  33     Resource diagram;\r
  34 \r
  35     public IndexRootSymbolProviderFactory(Resource indexRoot, Resource diagram) {\r
  36         this.indexRoot = indexRoot;\r
  37         this.diagram = diagram;\r
  38     }\r
  39 \r
  40         @Override\r
  41         public int hashCode() {\r
  42                 final int prime = 31;\r
  43                 int result = 1;\r
  44                 result = prime * result + ((diagram == null) ? 0 : diagram.hashCode());\r
  45                 result = prime * result + ((indexRoot == null) ? 0 : indexRoot.hashCode());\r
  46                 return result;\r
  47         }\r
  48 \r
  49         @Override\r
  50         public boolean equals(Object obj) {\r
  51                 if (this == obj)\r
  52                         return true;\r
  53                 if (obj == null)\r
  54                         return false;\r
  55                 if (getClass() != obj.getClass())\r
  56                         return false;\r
  57                 IndexRootSymbolProviderFactory other = (IndexRootSymbolProviderFactory) obj;\r
  58                 if (diagram == null) {\r
  59                         if (other.diagram != null)\r
  60                                 return false;\r
  61                 } else if (!diagram.equals(other.diagram))\r
  62                         return false;\r
  63                 if (indexRoot == null) {\r
  64                         if (other.indexRoot != null)\r
  65                                 return false;\r
  66                 } else if (!indexRoot.equals(other.indexRoot))\r
  67                         return false;\r
  68                 return true;\r
  69         }\r
  70 \r
  71     @Override\r
  72     public ISymbolProvider create(ReadGraph g) throws DatabaseException {\r
  73         return g.syncRequest(new LoadRequest(indexRoot, diagram));\r
  74     }\r
  75 \r
  76     static class LoadRequest extends BinaryRead<Resource, Resource, ISymbolProvider> {\r
  77         public LoadRequest(Resource contribution, Resource diagram) {\r
  78             super(contribution, diagram);\r
  79         }\r
  80         @Override\r
  81         public ISymbolProvider perform(ReadGraph graph) throws DatabaseException {\r
  82                 \r
  83                 Layer0 L0 = Layer0.getInstance(graph);\r
  84             DiagramResource dr = DiagramResource.getInstance(graph);\r
  85             \r
  86             Collection<ISymbolGroup> groups = new ArrayList<ISymbolGroup>();\r
  87             \r
  88             if (parameter != null) {\r
  89                 Instances query = graph.adapt(dr.SymbolReferenceLibrary, Instances.class);\r
  90                 for(Resource library : query.find(graph, parameter)) {\r
  91                     if (SymbolProviderFactories.accept(graph, dr, library, parameter2)) {\r
  92                                 groups.add(BasicSymbolProviderFactory.createGroup(graph, library, L0.IsRelatedTo, parameter2));\r
  93                     }\r
  94                 }\r
  95             }\r
  96 \r
  97             return new SymbolProvider(groups);\r
  98         }\r
  99     }\r
 100 \r
 101     static class SymbolProvider extends AbstractSymbolProvider {\r
 102         public SymbolProvider(Collection<ISymbolGroup> groups) {\r
 103             super();\r
 104             setSymbolGroup(groups);\r
 105             lockGroups();\r
 106         }\r
 107     }\r
 108 \r
 109 }\r