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Index tokenized lowercase versions of name and types for UI searches
[simantics/platform.git] / bundles / org.simantics.db.layer0 / src / org / simantics / db / layer0 / request / PossibleVariableIndexRoot.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.request;
13
14 import org.simantics.db.ReadGraph;
15 import org.simantics.db.Resource;
16 import org.simantics.db.exception.DatabaseException;
17 import org.simantics.db.layer0.variable.Variable;
18 import org.simantics.layer0.Layer0;
19
20 public class PossibleVariableIndexRoot extends VariableRead<Resource> {
21
22     public PossibleVariableIndexRoot(Variable variable) {
23         super(variable);
24     }
25
26     @Override
27     public Resource perform(ReadGraph graph) throws DatabaseException {
28
29         Layer0 L0 = Layer0.getInstance(graph);
30         
31         Resource represents = variable.getPossibleRepresents(graph);
32         if(represents != null) {
33                 if(graph.isInstanceOf(represents, L0.IndexRoot)) return represents;
34                 if(graph.getRootLibrary().equals(represents)) return null;
35         }
36         
37         return graph.syncRequest(new PossibleVariableIndexRoot(variable.getParent(graph)));
38
39     }
40
41 }