1 /*******************************************************************************
2 * Copyright (c) 2007, 2010 Association for Decentralized Information Management
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
10 * VTT Technical Research Centre of Finland - initial API and implementation
11 *******************************************************************************/
12 package org.simantics.diagram.query;
14 import org.simantics.db.ReadGraph;
15 import org.simantics.db.Resource;
16 import org.simantics.db.common.request.ResourceRead;
17 import org.simantics.db.exception.DatabaseException;
18 import org.simantics.diagram.stubs.DiagramResource;
21 * @author Hannu Niemisto
23 public class FlagPairQuery extends ResourceRead<Resource> {
25 public FlagPairQuery(Resource flag) {
30 public Resource perform(ReadGraph g) throws DatabaseException {
31 DiagramResource dr = DiagramResource.getInstance(g);
33 Resource connectionJoin = g.getPossibleObject(resource, dr.FlagIsJoinedBy);
34 if (connectionJoin == null)
37 for (Resource flag : g.getObjects(connectionJoin, dr.JoinsFlag)) {
38 if (!flag.equals(resource))