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.diagram.query;
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14 import org.simantics.db.ReadGraph;
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15 import org.simantics.db.Resource;
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16 import org.simantics.db.common.request.ResourceRead;
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17 import org.simantics.db.exception.DatabaseException;
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18 import org.simantics.diagram.stubs.DiagramResource;
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21 * @author Hannu Niemisto
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23 public class FlagPairQuery extends ResourceRead<Resource> {
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25 public FlagPairQuery(Resource flag) {
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30 public Resource perform(ReadGraph g) throws DatabaseException {
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31 DiagramResource dr = DiagramResource.getInstance(g);
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33 Resource connectionJoin = g.getPossibleObject(resource, dr.FlagIsJoinedBy);
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34 if (connectionJoin == null)
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37 for (Resource flag : g.getObjects(connectionJoin, dr.JoinsFlag)) {
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38 if (!flag.equals(resource))
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