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;
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14 import java.util.List;
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16 import org.simantics.db.ReadGraph;
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17 import org.simantics.db.exception.DatabaseException;
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18 import org.simantics.db.layer0.adapter.GenericRelation;
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19 import org.simantics.db.layer0.genericrelation.combinators.SelectByRelation;
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20 import org.simantics.db.layer0.genericrelation.combinators.Selection;
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23 * Default implementation for some methods of IRelation interface.
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25 public abstract class AbstractRelation implements GenericRelation {
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28 public boolean isRealizable() {
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33 public List<Object[]> realize(ReadGraph g) throws DatabaseException {
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34 throw new UnsupportedOperationException();
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38 public GenericRelation select(String bindingPattern, Object[] constants) {
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39 return new Selection(this, bindingPattern, constants);
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43 public GenericRelation selectByRelation(String bindingPattern, GenericRelation constraint) {
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44 return new SelectByRelation(this, bindingPattern, constraint);
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