org.simantics.objmap2/src/org/simantics/objmap/structural/rules/domain/StructuralRelatedObjectsAccessor.java

   1 /*******************************************************************************\r
   2  * Copyright (c) 2007, 2013 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.objmap.structural.rules.domain;\r
  13 \r
  14 import java.util.ArrayList;\r
  15 import java.util.Collection;\r
  16 import java.util.Collections;\r
  17 import java.util.List;\r
  18 \r
  19 import org.apache.log4j.Logger;\r
  20 import org.simantics.db.ReadGraph;\r
  21 import org.simantics.db.Resource;\r
  22 import org.simantics.db.WriteGraph;\r
  23 import org.simantics.db.exception.DatabaseException;\r
  24 import org.simantics.layer0.Layer0;\r
  25 import org.simantics.objmap.exceptions.MappingException;\r
  26 import org.simantics.objmap.graph.rules.domain.IDomainAccessor;\r
  27 import org.simantics.objmap.graph.rules.domain.MappingUtils;\r
  28 import org.simantics.objmap.structural.StructuralResource;\r
  29 import org.simantics.structural.stubs.StructuralResource2;\r
  30 \r
  31 \r
  32 public class StructuralRelatedObjectsAccessor implements IDomainAccessor<StructuralResource,Collection<StructuralResource>> {\r
  33 \r
  34     static Logger LOGGER = Logger.getLogger("org.simantics.objmap");\r
  35     \r
  36         Resource relation;\r
  37         boolean deleteExtraObjects;\r
  38 \r
  39         public StructuralRelatedObjectsAccessor(Resource relation, boolean deleteExtraObjects) {\r
  40         super();\r
  41         this.relation = relation;\r
  42         this.deleteExtraObjects = deleteExtraObjects;\r
  43     }\r
  44 \r
  45     @Override\r
  46         public Collection<StructuralResource> get(ReadGraph g, StructuralResource element) throws MappingException {\r
  47                 try {\r
  48                     LOGGER.info("        RelatedObjectsAccessor.get");\r
  49                         \r
  50                     if (!element.isStructural())\r
  51                         return Collections.EMPTY_LIST;\r
  52                     \r
  53                     // Structural instance\r
  54                     Resource instance = StructuralUtils.getContainingInstance(element);\r
  55                     \r
  56                     Resource publicRelation = StructuralUtils.getPublishedRelation(g, element, relation);\r
  57                     \r
  58                     if (publicRelation == null)\r
  59                       return Collections.EMPTY_LIST;\r
  60                     \r
  61                     Collection<Resource> coll = g.getObjects(instance, publicRelation);\r
  62                         List<StructuralResource> result = new ArrayList<StructuralResource>(coll.size());\r
  63                         List<Resource> context = new ArrayList<Resource>();\r
  64                         for (int i = 0; i < element.getContext().size()-1; i++)\r
  65                                 context.add(element.getContext().get(i));\r
  66                         for (Resource r : coll) {\r
  67                                 if (StructuralUtils.isStructuralInstance(g, r)) {\r
  68                                         result.add(new StructuralResource(g, r, context,r));\r
  69                                 } else {\r
  70                                         result.add(new StructuralResource(g, r, context));\r
  71                                 }\r
  72                         }\r
  73                         return result;\r
  74                 } catch (DatabaseException e) {\r
  75                         throw new MappingException(e);\r
  76                 }\r
  77         }\r
  78         \r
  79         @Override\r
  80         public boolean set(WriteGraph g, StructuralResource element, Collection<StructuralResource> value)\r
  81                         throws MappingException {\r
  82                 try {\r
  83                     LOGGER.info("        RelatedObjectsAccessor.set");\r
  84                     \r
  85                     if (!element.isStructural())\r
  86                         return false;\r
  87                     \r
  88                     Resource instance = StructuralUtils.getContainingInstance(element);\r
  89                     Resource publicRelation = null;\r
  90                     if (value.size() == 0) {\r
  91                         publicRelation = StructuralUtils.getPublishedRelation(g, element, relation);\r
  92                         if (publicRelation == null)\r
  93                                 return false;\r
  94                         else {\r
  95                                 return MappingUtils.synchronizeStatements(g, instance, publicRelation, new Resource[0], deleteExtraObjects);\r
  96                         }\r
  97                     } else {\r
  98                         publicRelation = StructuralUtils.getOrCreatePublishedRelation(g, element, relation);\r
  99                         if (publicRelation == null)\r
 100                                 throw new MappingException("Structural Resource " + element + " cannot contain structural elements, the Resource is not published.");\r
 101                             Resource[] arr = new Resource[value.size()];\r
 102                             int i = 0; \r
 103                             for (StructuralResource sr : value) {\r
 104                                 arr[i++] = sr.getResource();\r
 105                             }\r
 106                             return MappingUtils.synchronizeStatements(g, instance, publicRelation, arr, deleteExtraObjects);\r
 107                     }\r
 108                     \r
 109                     \r
 110                         \r
 111                 } catch (DatabaseException e) {\r
 112                         throw new MappingException(e);\r
 113                 }\r
 114                 \r
 115         }\r
 116 \r
 117         \r
 118 }\r