gerrit.simantics Code Review - simantics/3d.git/blob

   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.graph.annotations.factories;\r
  13 \r
  14 import java.lang.annotation.Annotation;\r
  15 import java.lang.reflect.Field;\r
  16 \r
  17 import org.simantics.db.ReadGraph;\r
  18 import org.simantics.db.Resource;\r
  19 import org.simantics.db.exception.ResourceNotFoundException;\r
  20 import org.simantics.db.exception.ServiceException;\r
  21 import org.simantics.db.exception.ValidationException;\r
  22 \r
  23 import org.simantics.objmap.bidirectional.IBidirectionalMappingRule;\r
  24 import org.simantics.objmap.graph.annotations.RelatedValue;\r
  25 import org.simantics.objmap.graph.rules.ValueRule;\r
  26 import org.simantics.objmap.graph.rules.adapters.IdentityAdapter;\r
  27 import org.simantics.objmap.graph.rules.adapters.ValueAdapter;\r
  28 import org.simantics.objmap.graph.rules.domain.RelatedValueAccessor;\r
  29 import org.simantics.objmap.graph.rules.factory.IFieldRuleFactory;\r
  30 import org.simantics.objmap.graph.rules.range.AdaptedRangeAccessor;\r
  31 import org.simantics.objmap.graph.rules.range.FieldAccessor;\r
  32 import org.simantics.objmap.graph.rules.range.IRangeAccessor;\r
  33 \r
  34 \r
  35 public class RelatedValueRuleFactory<Range> implements IFieldRuleFactory<Resource, Range> {\r
  36 \r
  37     @Override\r
  38     public IBidirectionalMappingRule<Resource, Range> create(ReadGraph g, Annotation _annotation, Field field) throws ResourceNotFoundException,\r
  39             ValidationException, ServiceException {\r
  40         RelatedValue annotation = (RelatedValue) _annotation;\r
  41         Class<? extends ValueAdapter> adapterClass = annotation.adapter();\r
  42         IRangeAccessor<Range,Object> rangeAccessor = new FieldAccessor<Range,Object>(field);\r
  43         Resource valueType;\r
  44         if (adapterClass == IdentityAdapter.class) {\r
  45             valueType = DataTypeUtils.dataTypeOfClass(g, field.getType());\r
  46         } else {\r
  47             try {\r
  48                 ValueAdapter adapter = adapterClass.newInstance();\r
  49                 rangeAccessor = new AdaptedRangeAccessor<Range>(rangeAccessor, adapter);\r
  50                 valueType = adapter.rangeTypeToDomainType(g, field.getType());\r
  51             } catch (InstantiationException e) {\r
  52                 throw new RuntimeException(e);\r
  53             } catch (IllegalAccessException e) {\r
  54                 throw new RuntimeException(e);\r
  55             }\r
  56         }\r
  57         return new ValueRule<Resource,Range>(new RelatedValueAccessor(g.getResource(annotation.value()), valueType), rangeAccessor);\r
  58     }\r
  59 \r
  60 }\r