bundles/org.simantics.db.layer0/src/org/simantics/db/layer0/request/PossibleVariableModel.java

   1 /*******************************************************************************
   2  * Copyright (c) 2014 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  *     Semantum Oy - initial API and implementation
  11  *******************************************************************************/
  12 package org.simantics.db.layer0.request;
  13
  14 import org.simantics.db.ReadGraph;
  15 import org.simantics.db.Resource;
  16 import org.simantics.db.exception.DatabaseException;
  17 import org.simantics.db.layer0.variable.Variable;
  18 import org.simantics.simulation.ontology.SimulationResource;
  19
  20 public class PossibleVariableModel extends VariableRead<Resource> {
  21
  22         public PossibleVariableModel(Variable variable) {
  23                 super(variable);
  24         }
  25
  26         @Override
  27         public Resource perform(ReadGraph graph) throws DatabaseException {
  28
  29                 SimulationResource SIMU = SimulationResource.getInstance(graph);
  30
  31                 Resource represents = variable.getPossibleRepresents(graph);
  32                 if(represents != null) {
  33                         if(graph.isInstanceOf(represents, SIMU.Model)) return represents;
  34                         if(graph.getRootLibrary().equals(represents)) return null;
  35                 }
  36
  37                 return graph.syncRequest(new PossibleVariableModel(variable.getParent(graph)));
  38
  39         }
  40
  41 }