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.browsing.ui.graph.impl;
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14 import java.util.ArrayList;
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15 import java.util.Collection;
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17 import org.simantics.browsing.ui.BuiltinKeys;
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18 import org.simantics.browsing.ui.NodeContext;
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19 import org.simantics.browsing.ui.PrimitiveQueryUpdater;
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20 import org.simantics.browsing.ui.BuiltinKeys.ViewpointKey;
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21 import org.simantics.browsing.ui.common.NodeContextBuilder;
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22 import org.simantics.browsing.ui.content.Viewpoint;
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23 import org.simantics.browsing.ui.content.ViewpointFactory;
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24 import org.simantics.db.ReadGraph;
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25 import org.simantics.db.Resource;
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26 import org.simantics.db.Statement;
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27 import org.simantics.db.exception.DatabaseException;
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28 import org.simantics.layer0.Layer0;
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31 * A first test version of a viewpoint that provides editing of the shared
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32 * properties of multiple input resources.
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34 public class MultiInputPropertyViewpointFactory implements ViewpointFactory {
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37 public Viewpoint create(PrimitiveQueryUpdater provider, final NodeContext context, ViewpointKey key) {
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39 assert(provider != null);
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40 assert(context != null);
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42 return new LazyViewpoint(provider, context, key) {
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45 public NodeContext[] children(ReadGraph graph) throws DatabaseException {
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46 Resource[] rs = (Resource[]) context.getConstant(BuiltinKeys.INPUT);
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47 if(rs.length == 0) return new NodeContext[0];
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48 if(rs.length == 1) return new NodeContext[0];
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50 Layer0 l0 = Layer0.getInstance(graph);
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51 Resource type = graph.getSingleType(r, l0.Entity);
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52 for(int i=1;i<rs.length;i++) {
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53 Resource type2 = graph.getSingleType(rs[i], l0.Entity);
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54 if(!type.equals(type2)) return new NodeContext[0];
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57 Collection<Statement> children = graph.getStatements(r, l0.HasProperty);
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59 ArrayList<NodeContext> resultContexts = new ArrayList<NodeContext>();
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61 for(Statement child : children) {
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63 ArrayList<Resource> objects = new ArrayList<Resource>();
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65 objects.add(child.getObject());
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68 for(int i=1;i<rs.length;i++) {
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69 Collection<Resource> objects2 = graph.getObjects(rs[1], child.getPredicate());
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70 if(objects2.size() != 1) {
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74 objects.add(objects2.iterator().next());
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77 resultContexts.add(NodeContextBuilder.buildWithInput(new PropertyArray(child.getPredicate(), objects)));
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82 return resultContexts.toArray(new NodeContext[resultContexts.size()]);
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86 public Boolean hasChildren(ReadGraph graph) throws DatabaseException {
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87 return Boolean.valueOf(children(graph).length > 0);
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93 public String toString() {
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94 return "Properties";
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