1 /*******************************************************************************
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2 * Copyright (c) 2012 Association for Decentralized Information Management in
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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.modeling.template2d.ui.actions;
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14 import java.util.Collection;
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15 import java.util.HashSet;
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16 import java.util.List;
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17 import java.util.Set;
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19 import org.simantics.Simantics;
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20 import org.simantics.db.Resource;
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21 import org.simantics.db.WriteGraph;
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22 import org.simantics.db.common.request.ObjectsWithType;
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23 import org.simantics.db.common.request.WriteRequest;
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24 import org.simantics.db.common.utils.ListUtils;
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25 import org.simantics.db.exception.DatabaseException;
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26 import org.simantics.db.layer0.adapter.ActionFactory;
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27 import org.simantics.db.layer0.util.RemoverUtil;
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28 import org.simantics.layer0.Layer0;
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29 import org.simantics.scenegraph.ontology.ScenegraphResources;
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31 public class FixLinkedList implements ActionFactory {
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34 public Runnable create(Object target) {
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35 if(!(target instanceof Resource))
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37 final Resource parent = (Resource)target;
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39 return new Runnable() {
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42 Simantics.getSession().asyncRequest(new WriteRequest() {
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44 public void perform(WriteGraph g) throws DatabaseException {
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46 Layer0 L0 = Layer0.getInstance(g);
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47 ScenegraphResources SG = ScenegraphResources.getInstance(g);
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49 Collection<Resource> consist = g.syncRequest(new ObjectsWithType(parent, L0.ConsistsOf, SG.Node));
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51 Resource list = g.getPossibleObject(parent, SG.Node_children);
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54 List<Resource> children = ListUtils.toList(g, list);
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55 Set<Resource> childSet = new HashSet<Resource>(children);
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56 Set<Resource> consistSet = new HashSet<Resource>(consist);
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57 if (childSet.equals(consistSet)) {
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60 } catch (DatabaseException e) {
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63 // List is invalid, recreate it.
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64 RemoverUtil.remove(g, list);
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65 g.deny(parent, SG.Node_children);
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66 list = ListUtils.create(g, consist);
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67 g.claim(parent, SG.Node_children, list);
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70 // No list at all - create one from children.
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71 list = ListUtils.create(g, consist);
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72 g.claim(parent, SG.Node_children, list);
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