bundles/org.simantics.objmap2/src/org/simantics/objmap/structural/rules/domain/RelatedOrderedSetElementsAccessor.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.common.utils.OrderedSetUtils;\r
  24 import org.simantics.db.exception.DatabaseException;\r
  25 import org.simantics.objmap.exceptions.MappingException;\r
  26 import org.simantics.objmap.graph.rules.domain.IDomainAccessor;\r
  27 import org.simantics.objmap.structural.StructuralResource;\r
  28 \r
  29 public class RelatedOrderedSetElementsAccessor implements IDomainAccessor<StructuralResource, Collection<StructuralResource>> {\r
  30 \r
  31     static Logger LOGGER = Logger.getLogger("org.simantics.objmap");\r
  32     \r
  33         boolean deleteExtraObjects;\r
  34         boolean useTypeResource;\r
  35 \r
  36         public RelatedOrderedSetElementsAccessor(boolean deleteExtraObjects, boolean useTypeResource) {\r
  37         super();\r
  38         this.deleteExtraObjects = deleteExtraObjects;\r
  39         this.useTypeResource = useTypeResource;\r
  40     }\r
  41 \r
  42     @Override\r
  43         public Collection<StructuralResource> get(ReadGraph g, StructuralResource element) throws MappingException {\r
  44                 try {\r
  45                     LOGGER.info("        RelatedOrderedSetElementsAccessor.get");\r
  46                     Resource res = getServiceResource(g, element);\r
  47                     if (res == null)\r
  48                         return Collections.emptyList();\r
  49                         List<Resource> list =  OrderedSetUtils.toList(g, res);\r
  50                         List<StructuralResource> result = new ArrayList<StructuralResource>(list.size());\r
  51                         for (Resource r : list) {\r
  52                                 result.add(new StructuralResource(g,r,element.getContext()));\r
  53                         }\r
  54                         return result;\r
  55                 } catch (DatabaseException e) {\r
  56                         throw new MappingException(e);\r
  57                 }\r
  58         }\r
  59         \r
  60         @Override\r
  61         public boolean set(WriteGraph g, StructuralResource element, Collection<StructuralResource> value)\r
  62                         throws MappingException {\r
  63                 try {\r
  64                     LOGGER.info("        RelatedOrderedSetElementsAccessor.set");\r
  65                     Resource res = getServiceResource(g, element);\r
  66                     if (res == null)\r
  67                         return false;\r
  68                     List<Resource> list = new ArrayList<Resource>(value.size());\r
  69                     for (StructuralResource r : value) {\r
  70                         list.add(r.getResource());\r
  71                     }\r
  72                     return OrderedSetUtils.set(g, res, list);\r
  73                     // FIXME Implement deleteExtraObjects\r
  74                 } catch (DatabaseException e) {\r
  75                         throw new MappingException(e);\r
  76                 }\r
  77                 \r
  78         }\r
  79         \r
  80         private Resource getServiceResource(ReadGraph g, StructuralResource element) {\r
  81                 if (!useTypeResource)\r
  82                         return element.getResource();\r
  83                 return element.getTypeResource();\r
  84         }\r
  85 \r
  86 }\r