bundles/org.simantics.modeling.ui/src/org/simantics/modeling/ui/chart/property/ObtainedDoubleAdapter.java

   1 /*******************************************************************************
   2  * Copyright (c) 2007, 2011 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.modeling.ui.chart.property;
  13
  14 import java.util.ArrayList;
  15 import java.util.Collections;
  16
  17 import org.simantics.databoard.Bindings;
  18 import org.simantics.db.ReadGraph;
  19 import org.simantics.db.RelationContext;
  20 import org.simantics.db.Resource;
  21 import org.simantics.db.Statement;
  22 import org.simantics.db.common.adaption.SimpleContextualAdapter;
  23 import org.simantics.db.exception.AdaptionException;
  24 import org.simantics.db.exception.DatabaseException;
  25 import org.simantics.db.layer0.property.OrderedResource;
  26 import org.simantics.operation.Layer0X;
  27
  28 /**
  29  * @author Tuukka Lehtonen
  30  */
  31 public class ObtainedDoubleAdapter extends SimpleContextualAdapter<Double, RelationContext> {
  32
  33     @Override
  34     public Double adapt(ReadGraph graph, Resource source, RelationContext context) throws DatabaseException {
  35         Layer0X L0X = Layer0X.getInstance(graph);
  36         ArrayList<OrderedResource> order = new ArrayList<OrderedResource>();
  37         for (Statement stm : graph.getStatements(context.getSubject(), L0X.ObtainsProperty)) {
  38             Integer position = graph.getRelatedValue(stm.getPredicate(), L0X.NaturalNumberOrderRelation,
  39                     Bindings.INTEGER);
  40             order.add(new OrderedResource(position, stm.getObject()));
  41         }
  42         if (order.size() > 1)
  43             Collections.sort(order);
  44         for (OrderedResource or : order) {
  45             Double result = graph.getPossibleRelatedAdapter(or.r, context.getStatement().getPredicate(), Double.class);
  46             if (result != null)
  47                 return result;
  48         }
  49
  50         throw new AdaptionException("No obtained double available");
  51     }
  52
  53 }