bundles/org.simantics.db.common/src/org/simantics/db/common/primitiverequest/Adapter.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.common.primitiverequest;
  13
  14 import org.simantics.db.ReadGraph;
  15 import org.simantics.db.Resource;
  16 import org.simantics.db.adaption.AdaptionService;
  17 import org.simantics.db.common.request.BinaryRead;
  18 import org.simantics.db.exception.DatabaseException;
  19 import org.simantics.db.exception.ServiceException;
  20
  21 final public class Adapter<T> extends BinaryRead<Resource,Class<T>,T> {
  22
  23     public Adapter(Resource resource, Class<T> clazz) {
  24         super(resource, clazz);
  25     }
  26
  27         @Override
  28         public T perform(ReadGraph graph) throws DatabaseException {
  29
  30                 final AdaptionService service = graph.peekService(AdaptionService.class);
  31                 if (service == null) throw new ServiceException("No AdaptionService available");
  32
  33                 return service.adapt(graph, parameter, parameter, Resource.class, parameter2, false);
  34
  35         }
  36
  37     @Override
  38     public String toString() {
  39         return "Adapter for resource " + parameter.getResourceId() + " as " + parameter2.getName();
  40     }
  41
  42
  43 }