gerrit.simantics Code Review - simantics/platform.git/blob

   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.DatabaseException;
  24 import org.simantics.db.layer0.property.OrderedResource;
  25 import org.simantics.operation.Layer0X;
  26
  27 /**
  28  * @author Tuukka Lehtonen
  29  */
  30 public class ObtainedDoubleAdapter extends SimpleContextualAdapter<Double, RelationContext> {
  31
  32     @Override
  33     public Double adapt(ReadGraph graph, Resource source, RelationContext context) throws DatabaseException {
  34         Layer0X L0X = Layer0X.getInstance(graph);
  35         ArrayList<OrderedResource> order = new ArrayList<OrderedResource>();
  36         for (Statement stm : graph.getStatements(context.getSubject(), L0X.ObtainsProperty)) {
  37             Integer position = graph.getRelatedValue(stm.getPredicate(), L0X.NaturalNumberOrderRelation,
  38                     Bindings.INTEGER);
  39             order.add(new OrderedResource(position, stm.getObject()));
  40         }
  41         if (order.size() > 1)
  42             Collections.sort(order);
  43         for (OrderedResource or : order) {
  44             Double result = graph.getPossibleRelatedAdapter(or.r, context.getStatement().getPredicate(), Double.class);
  45             if (result != null)
  46                 return result;
  47         }
  48
  49         return null;
  50     }
  51
  52 }