1 /*******************************************************************************
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2 * Copyright (c) 2013 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.adapters;
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14 import java.util.ArrayList;
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15 import java.util.Collection;
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16 import java.util.Collections;
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18 import org.simantics.browsing.ui.model.children.ChildRule;
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19 import org.simantics.db.ReadGraph;
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20 import org.simantics.db.Resource;
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21 import org.simantics.db.common.utils.ListUtils;
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22 import org.simantics.db.exception.DatabaseException;
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23 import org.simantics.layer0.Layer0;
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24 import org.simantics.scenegraph.ontology.ScenegraphResources;
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26 public class ScenegraphChildrenRule implements ChildRule {
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29 public boolean isCompatible(Class<?> contentType) {
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30 return contentType.equals(Resource.class);
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34 public Collection<?> getChildren(ReadGraph graph, Object parent)
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35 throws DatabaseException {
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37 Resource entry = (Resource)parent;
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38 Layer0 L0 = Layer0.getInstance(graph);
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39 ScenegraphResources SG = ScenegraphResources.getInstance(graph);
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40 Resource list = graph.getPossibleObject(entry, SG.Node_children);
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42 if(graph.isInstanceOf(list, L0.List)) return ListUtils.toList(graph, list);
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44 return Collections.emptyList();
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48 public Collection<?> getParents(ReadGraph graph, Object child)
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49 throws DatabaseException {
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50 return new ArrayList<Resource>();
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