bundles/org.simantics.db.services/src/org/simantics/db/services/adaption/reflection/AtMostOneRelatedResource2.java

   1 /*******************************************************************************
   2  * Copyright (c) 2007, 2010 Association for Decentralized Information Management
   3  * in 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.db.services.adaption.reflection;
  13
  14 import org.simantics.db.Resource;
  15 import org.simantics.db.ReadGraph;
  16 import org.simantics.db.exception.DatabaseException;
  17
  18 public class AtMostOneRelatedResource2 implements IDynamicAdapter2 {
  19
  20         Resource relation;
  21
  22         public AtMostOneRelatedResource2(Resource relation) {
  23                 this.relation = relation;
  24         }
  25
  26         @Override
  27         public Class<?> getType() {
  28                 return Resource.class;
  29         }
  30
  31         @Override
  32         public Resource adapt(ReadGraph g, Resource r) throws DatabaseException {
  33             return g.getPossibleObject(r, relation);
  34         }
  35
  36 }