]> gerrit.simantics Code Review - simantics/platform.git/blob - bundles/org.simantics.db.layer0/src/org/simantics/db/layer0/adapter/impl/AbstractRemover.java
Sync git svn branch with SVN repository r33389.
[simantics/platform.git] / bundles / org.simantics.db.layer0 / src / org / simantics / db / layer0 / adapter / impl / AbstractRemover.java
1 /*******************************************************************************\r
2  * Copyright (c) 2007, 2010 Association for Decentralized Information Management\r
3  * in Industry THTH ry.\r
4  * All rights reserved. This program and the accompanying materials\r
5  * are made available under the terms of the Eclipse Public License v1.0\r
6  * which accompanies this distribution, and is available at\r
7  * http://www.eclipse.org/legal/epl-v10.html\r
8  *\r
9  * Contributors:\r
10  *     VTT Technical Research Centre of Finland - initial API and implementation\r
11  *******************************************************************************/\r
12 package org.simantics.db.layer0.adapter.impl;\r
13 \r
14 import java.util.Map;\r
15 \r
16 import org.simantics.db.ReadGraph;\r
17 import org.simantics.db.Resource;\r
18 import org.simantics.db.WriteGraph;\r
19 import org.simantics.db.exception.DatabaseException;\r
20 import org.simantics.db.layer0.adapter.Remover;\r
21 \r
22 /**\r
23  * @author Tuukka Lehtonen\r
24  */\r
25 public abstract class AbstractRemover implements Remover {\r
26 \r
27     protected final Resource resource;\r
28 \r
29     public AbstractRemover(Resource resource) {\r
30         this.resource = resource;\r
31     }\r
32 \r
33     protected String consultPossibleCanRemove(ReadGraph graph, Resource r, Map<Object, Object> aux) throws DatabaseException {\r
34         Remover remover = graph.getPossibleAdapter(r, Remover.class);\r
35         if (remover != null) {\r
36             return remover.canRemove(graph, aux);\r
37         }\r
38         return null;\r
39     }\r
40 \r
41     protected boolean consultPossibleRemover(WriteGraph graph, Resource r) throws DatabaseException {\r
42         Remover remover = graph.getPossibleAdapter(r, Remover.class);\r
43         if (remover != null) {\r
44             remover.remove(graph);\r
45             return true;\r
46         }\r
47         return false;\r
48     }\r
49 \r
50     @Override\r
51     public String canRemove(ReadGraph graph, Map<Object, Object> aux) throws DatabaseException {\r
52         return null;\r
53     }\r
54 \r
55 }\r