bundles/org.simantics.modeling/src/org/simantics/modeling/adapters/DiagramSubgraphExtent.java

   1 /*******************************************************************************
   2  * Copyright (c) 2012 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.adapters;
  13
  14 import org.simantics.db.AsyncReadGraph;
  15 import org.simantics.db.Resource;
  16 import org.simantics.db.Statement;
  17 import org.simantics.db.layer0.adapter.impl.TypeSubgraphExtent;
  18 import org.simantics.db.procedure.AsyncProcedure;
  19 import org.simantics.diagram.stubs.DiagramResource;
  20
  21 public class DiagramSubgraphExtent extends TypeSubgraphExtent {
  22
  23         final private Classifier classifier = new Classifier() {
  24
  25                 @Override
  26                 public void classify(AsyncReadGraph graph, Statement statement, ExtentStatus objectExtent,
  27                                 Callback callback) {
  28
  29                         if(!ExtentStatus.INTERNAL.equals(objectExtent)) return;
  30
  31                         Resource predicate = statement.getPredicate();
  32
  33                         DiagramResource dr = graph.getService(DiagramResource.class);
  34                         if(dr.JoinsFlag.equalsResource(predicate)) callback.statement(statement, true);
  35                         else if(dr.FlagIsJoinedBy.equalsResource(predicate)) callback.statement(statement, true);
  36
  37                 }
  38
  39         };
  40
  41         @Override
  42         public void accept(AsyncReadGraph graph, Resource resource,
  43                         AsyncProcedure<Classifier> procedure, Callback callback) {
  44                 procedure.execute(graph, classifier);
  45         }
  46
  47 }