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.db.layer0.genericrelation.combinators;
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14 import org.simantics.db.ReadGraph;
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15 import org.simantics.db.exception.DatabaseException;
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16 import org.simantics.db.layer0.adapter.GenericRelation;
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17 import org.simantics.db.layer0.genericrelation.AbstractRelation;
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18 import org.simantics.utils.datastructures.Pair;
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21 * Takes the complement of a relation;
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23 public class Complement extends AbstractRelation {
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25 GenericRelation base;
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27 public Complement(GenericRelation base) {
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32 public boolean contains(ReadGraph g, Object[] tuple) throws DatabaseException {
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33 return !base.contains(g, tuple);
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37 public GenericRelation select(String bindingPattern, Object[] constants) {
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38 return new Complement(base.select(bindingPattern, constants));
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42 public Pair<String, String>[] getFields() {
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43 return base.getFields();
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