]> gerrit.simantics Code Review - simantics/platform.git/blob - bundles/org.simantics.browsing.ui.graph.impl/src/org/simantics/browsing/ui/graph/impl/URIResourceInputSource.java
Fixed multiple issues causing dangling references to discarded queries
[simantics/platform.git] / bundles / org.simantics.browsing.ui.graph.impl / src / org / simantics / browsing / ui / graph / impl / URIResourceInputSource.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.browsing.ui.graph.impl;
13
14 import org.eclipse.ui.IWorkbenchPart;
15 import org.simantics.browsing.ui.GraphExplorer;
16 import org.simantics.browsing.ui.common.ErrorLogger;
17 import org.simantics.db.common.request.Queries;
18 import org.simantics.db.exception.DatabaseException;
19 import org.simantics.db.management.ISessionContext;
20
21 /**
22  * @author Antti Villberg
23  */
24 public class URIResourceInputSource implements SessionContextInputSource {
25
26     final private String uri;
27
28     public URIResourceInputSource(String uri) {
29         this.uri = uri;
30     }
31
32     @Override
33     public Object get(ISessionContext ctx) {
34         if (ctx == null)
35             return GraphExplorer.EMPTY_INPUT;
36
37         try {
38             return ctx.getSession().syncRequest(Queries.resource(uri));
39         } catch (DatabaseException e) {
40             ErrorLogger.defaultLogError(e);
41             return GraphExplorer.EMPTY_INPUT;
42         }
43     }
44     
45     @Override
46     public IWorkbenchPart getProvider() {
47         return null;
48     }
49
50 }