1 /*******************************************************************************
2 * Copyright (c) 2007, 2010 Association for Decentralized Information Management
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
10 * VTT Technical Research Centre of Finland - initial API and implementation
11 *******************************************************************************/
12 package org.simantics.db.layer0.genericrelation.combinators;
14 import org.simantics.db.ReadGraph;
15 import org.simantics.db.exception.DatabaseException;
16 import org.simantics.db.layer0.adapter.GenericRelation;
17 import org.simantics.db.layer0.genericrelation.AbstractRelation;
18 import org.simantics.utils.datastructures.Pair;
21 * Takes the complement of a relation;
23 public class Complement extends AbstractRelation {
27 public Complement(GenericRelation base) {
32 public boolean contains(ReadGraph g, Object[] tuple) throws DatabaseException {
33 return !base.contains(g, tuple);
37 public GenericRelation select(String bindingPattern, Object[] constants) {
38 return new Complement(base.select(bindingPattern, constants));
42 public Pair<String, String>[] getFields() {
43 return base.getFields();