bundles/org.simantics.db.layer0/src/org/simantics/db/layer0/adapter/impl/RootParentSubgraphExtent.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.layer0.adapter.impl;
  13
  14 import org.simantics.db.AsyncReadGraph;
  15 import org.simantics.db.Resource;
  16 import org.simantics.db.Statement;
  17 import org.simantics.db.procedure.AsyncProcedure;
  18 import org.simantics.layer0.Layer0;
  19
  20 public class RootParentSubgraphExtent extends TypeSubgraphExtent {
  21
  22         public static boolean DEBUG = false;
  23
  24         final private Classifier classifier;
  25
  26         public RootParentSubgraphExtent(final Resource root) {
  27                 this.classifier = new Classifier() {
  28
  29                         @Override
  30                         public void classify(AsyncReadGraph graph, Statement statement, ExtentStatus objectExtent, Callback callback) {
  31                                 if(!root.equals(statement.getSubject())) return;
  32                                 if(!graph.getService(Layer0.class).PartOf.equals(statement.getPredicate())) return;
  33                                 if(!ExtentStatus.EXTERNAL.equals(objectExtent)) return;
  34                                 callback.statement(statement, true);
  35                         }
  36
  37                 };
  38         }
  39
  40         @Override
  41         public void accept(AsyncReadGraph graph, final Resource resource, final AsyncProcedure<Classifier> procedure, final Callback callback) {
  42                 procedure.execute(graph, classifier);
  43         }
  44
  45 }