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.issues.common;
14 import gnu.trove.set.hash.THashSet;
18 import org.simantics.db.ReadGraph;
19 import org.simantics.db.Resource;
20 import org.simantics.db.common.request.UnaryRead;
21 import org.simantics.db.common.utils.ListUtils;
22 import org.simantics.db.exception.DatabaseException;
23 import org.simantics.db.layer0.variable.Variable;
24 import org.simantics.issues.ontology.IssueResource;
27 * A request for calculating the set of issue context resources for the
28 * specified set of issue variables.
30 * @author Tuukka Lehtonen
32 public class IssueContexts extends UnaryRead<Set<Variable>, Set<Resource>> {
34 public IssueContexts(Set<Variable> variables) {
39 public Set<Resource> perform(ReadGraph graph) throws DatabaseException {
40 IssueResource ISSUE = IssueResource.getInstance(graph);
41 Set<Resource> result = new THashSet<Resource>(parameter.size());
42 for(Variable issue : parameter) {
43 Resource issueResource = issue.getRepresents(graph);
44 result.addAll(graph.getObjects(issueResource, ISSUE.Issue_HasContext));
45 Resource list = graph.getPossibleObject(issueResource, ISSUE.Issue_HasContexts);
46 if(list != null) result.addAll(ListUtils.toList(graph, list));