1 /*******************************************************************************
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2 * Copyright (c) 2007, 2010 Association for Decentralized Information Management
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3 * in Industry THTH ry.
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4 * All rights reserved. This program and the accompanying materials
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5 * are made available under the terms of the Eclipse Public License v1.0
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6 * which accompanies this distribution, and is available at
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7 * http://www.eclipse.org/legal/epl-v10.html
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10 * VTT Technical Research Centre of Finland - initial API and implementation
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11 *******************************************************************************/
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12 package org.simantics.layer0.utils.binaryPredicates;
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14 import java.util.Collection;
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16 import org.simantics.db.Resource;
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17 import org.simantics.db.ReadGraph;
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18 import org.simantics.db.WriteGraph;
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19 import org.simantics.db.exception.DatabaseException;
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20 import org.simantics.utils.datastructures.Pair;
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22 public interface IBinaryPredicate {
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24 boolean supportsGetObjects();
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25 boolean supportsGetSubjects();
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26 boolean supportsGetStatements();
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28 Collection<Resource> getObjects(ReadGraph g, Resource subject) throws DatabaseException;
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29 Collection<Resource> getSubjects(ReadGraph g, Resource object) throws DatabaseException;
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30 Collection<Pair<Resource,Resource>> getStatements(ReadGraph g) throws DatabaseException;
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31 boolean has(ReadGraph g, Resource subject, Resource object) throws DatabaseException;
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33 boolean supportsAdditions();
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34 boolean supportsRemovals();
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36 void add(WriteGraph g, Resource subject, Resource object) throws DatabaseException;
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37 void remove(WriteGraph g, Resource subject, Resource object) throws DatabaseException;
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39 IBinaryPredicate inverse(ReadGraph g) throws DatabaseException;
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41 String toString(ReadGraph g) throws DatabaseException;
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