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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.layer0.utils.predicates;\r
13 \r
14 import java.util.Collection;\r
15 \r
16 import org.simantics.db.Resource;\r
17 import org.simantics.db.ReadGraph;\r
18 import org.simantics.db.WriteGraph;\r
19 import org.simantics.db.exception.DatabaseException;\r
20 \r
21 public interface IUnaryPredicate {\r
22 \r
23         boolean supportsUnboundedQuery();\r
24         \r
25         Collection<Resource> getResources(ReadGraph g) throws DatabaseException;\r
26         boolean has(ReadGraph g, Resource resource) throws DatabaseException;\r
27 \r
28         boolean supportsAddition();\r
29         boolean supportsRemoval();\r
30         \r
31         void add(WriteGraph g, Resource r) throws DatabaseException;\r
32         void remove(WriteGraph g, Resource r) throws DatabaseException;\r
33         \r
34 }\r