bundles/org.simantics.objmap2/src/org/simantics/objmap/graph/schema/DynamicSimpleLinkType.java

   1 /*******************************************************************************
   2  * Copyright (c) 2012, 2013 Association for Decentralized Information Management in
   3  * Industry THTH ry.
   4  * All rights reserved. This program and the accompanying materials
   5  * are made available under the terms of the Eclipse Public License v1.0
   6  * which accompanies this distribution, and is available at
   7  * http://www.eclipse.org/legal/epl-v10.html
   8  *
   9  * Contributors:
  10  *     VTT Technical Research Centre of Finland - initial API and implementation
  11  *******************************************************************************/
  12 package org.simantics.objmap.graph.schema;
  13
  14 import java.lang.reflect.InvocationTargetException;
  15 import java.lang.reflect.Method;
  16 import java.util.ArrayList;
  17
  18 import org.simantics.db.ReadGraph;
  19 import org.simantics.db.Resource;
  20 import org.simantics.db.WriteGraph;
  21 import org.simantics.db.common.utils.NameUtils;
  22 import org.simantics.db.exception.DatabaseException;
  23 import org.simantics.layer0.Layer0;
  24 import org.simantics.objmap.bidirectional.IBidirectionalMappingRule;
  25 import org.simantics.objmap.exceptions.MappingException;
  26 import org.simantics.objmap.graph.annotations.GetType;
  27 import org.simantics.objmap.graph.annotations.SetType;
  28
  29 public class DynamicSimpleLinkType<Range> extends SimpleLinkType<Range>{
  30
  31         protected Method typeGetter;
  32         protected Method typeSetter;
  33
  34         public DynamicSimpleLinkType(Resource domainType, Class<?> rangeType, ArrayList<IBidirectionalMappingRule<Resource, Range>> rules) {
  35                 super(domainType, rangeType, rules);
  36                 findTypeGetter(rangeType);
  37         }
  38
  39         public DynamicSimpleLinkType(Resource domainType, Class<?> rangeType) {
  40                 super(domainType, rangeType);
  41                 findTypeGetter(rangeType);
  42         }
  43
  44         private void findTypeGetter(Class<?> clazz) {
  45                 for (Method m : clazz.getDeclaredMethods()) {
  46                          m.setAccessible(true);
  47                          GetType t = m.getAnnotation(GetType.class);
  48                          if (t != null) {
  49                                  typeGetter = m;
  50                          }
  51                          SetType t2 = m.getAnnotation(SetType.class);
  52                          if (t2 != null) {
  53                                  typeSetter = m;
  54                          }
  55                 }
  56                 if (typeGetter == null || typeSetter == null) {
  57                         Class<?> superClazz = clazz.getSuperclass();
  58                         if (superClazz != Object.class)
  59                                 findTypeGetter(superClazz);
  60                         if (typeGetter == null || typeSetter == null) {
  61                                 throw new RuntimeException("Cannot find dynamic type methods for class " + clazz.getSimpleName());
  62                         }
  63                 }
  64
  65
  66         }
  67
  68         @Override
  69     public Resource createDomainElement(WriteGraph g, Range rangeElement)
  70             throws MappingException {
  71         try {
  72                 String typeUri = (String)typeGetter.invoke(rangeElement, (Object[]) null);
  73             if(LOGGER.isTraceEnabled())
  74                 LOGGER.trace("SimpleLinkType.createDomainElement " +
  75                         rangeElement.toString()
  76                 );
  77             Resource actualDomainType = g.getResource(typeUri);
  78             Resource result = g.newResource();
  79             //g.claim(result, Layer0.getInstance(g).InstanceOf, null, domainType);
  80             g.claim(result, Layer0.getInstance(g).InstanceOf, null, actualDomainType);
  81             return result;
  82         } catch(DatabaseException e) {
  83             throw new MappingException(e);
  84         } catch (IllegalArgumentException e) {
  85                  throw new MappingException(e);
  86                 } catch (IllegalAccessException e) {
  87                          throw new MappingException(e);
  88                 } catch (InvocationTargetException e) {
  89                          throw new MappingException(e.getCause());
  90                 }
  91     }
  92
  93          @SuppressWarnings("unchecked")
  94         @Override
  95             public Range createRangeElement(ReadGraph g, Resource domainElement)
  96                     throws MappingException {
  97                 try {
  98                     if(LOGGER.isTraceEnabled())
  99                         try {
 100                             LOGGER.trace("SimpleLinkType.createRangeElement " +
 101                                         NameUtils.getSafeName(g, domainElement)
 102                                     );
 103                         } catch(DatabaseException e) {
 104                             throw new MappingException(e);
 105                         }
 106                    Range r =  (Range)rangeType.newInstance();
 107                    Resource type = g.getSingleType(domainElement, domainType);
 108                    String uri = g.getURI(type);
 109                    typeSetter.invoke(r, uri);
 110                    return r;
 111                 } catch (InstantiationException e) {
 112                     throw new MappingException(e);
 113                 } catch (IllegalAccessException e) {
 114                     throw new MappingException(e);
 115                 } catch (DatabaseException e) {
 116                         throw new MappingException(e);
 117                         } catch (IllegalArgumentException e) {
 118                                 throw new MappingException(e);
 119                         } catch (InvocationTargetException e) {
 120                                 throw new MappingException(e.getCause());
 121                         }
 122             }
 123
 124 }