1 /*******************************************************************************
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2 * Copyright (c) 2014 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.charts.ui;
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14 import java.util.Collections;
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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.browsing.ui.common.ErrorLogger;
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21 import org.simantics.databoard.type.Datatype;
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22 import org.simantics.databoard.util.ObjectUtils;
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23 import org.simantics.db.ReadGraph;
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24 import org.simantics.db.Resource;
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25 import org.simantics.db.WriteGraph;
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26 import org.simantics.db.common.request.WriteRequest;
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27 import org.simantics.db.exception.DatabaseException;
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28 import org.simantics.db.layer0.SelectionHints;
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29 import org.simantics.db.layer0.adapter.DropActionFactory;
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30 import org.simantics.db.layer0.request.PossibleActiveVariableFromVariable;
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31 import org.simantics.db.layer0.request.PossibleModel;
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32 import org.simantics.db.layer0.variable.RVI;
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33 import org.simantics.db.layer0.variable.Variable;
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34 import org.simantics.db.layer0.variable.VariableReference;
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35 import org.simantics.db.layer0.variable.Variables;
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36 import org.simantics.layer0.Layer0;
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37 import org.simantics.modeling.ModelingResources;
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38 import org.simantics.modeling.PropertyVariables;
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39 import org.simantics.modeling.PropertyVariablesImpl;
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40 import org.simantics.modeling.utils.VariableReferences;
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41 import org.simantics.utils.datastructures.Callback;
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42 import org.simantics.utils.datastructures.collections.CollectionUtils;
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43 import org.simantics.utils.ui.ISelectionUtils;
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46 * @author Tuukka Lehtonen
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48 public class SubscriptionDropActionFactory implements DropActionFactory {
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51 public Runnable create(ReadGraph g, Object target, Object source, int operation) throws DatabaseException {
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52 //System.out.println("DROP: " + source + " -> " + target);
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54 final Resource subscription = ISelectionUtils.getSinglePossibleKey(target, SelectionHints.KEY_MAIN, Resource.class);
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55 if (subscription == null)
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57 Resource targetModel = g.syncRequest(new PossibleModel(subscription));
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59 if(source instanceof RVI) {
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61 RVI rvi = (RVI)source;
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62 List<VariableReference> refs = CollectionUtils.toList(new VariableReference(rvi, getDatatype(g, targetModel, rvi), null));
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63 if (!refs.isEmpty())
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64 return addSubscriptions(g, subscription, refs, Collections.<Resource>emptySet());
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68 List<PropertyVariables> vars = ISelectionUtils.getPossibleKeys(source, SelectionHints.KEY_MAIN, PropertyVariables.class);
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69 if (!vars.isEmpty()) {
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70 // FIXME: this is a hack for indexed value support
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71 vars = PropertyVariablesImpl.resolve(g, vars);
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73 List<VariableReference> references = g.syncRequest(VariableReferences.toReferences(targetModel, vars));
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74 if (!references.isEmpty())
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75 return addSubscriptions(g, subscription, references, Collections.<Resource>emptySet());
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77 List<Resource> srcs = ISelectionUtils.getPossibleKeys(source, SelectionHints.KEY_MAIN, Resource.class);
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78 ModelingResources MOD = ModelingResources.getInstance(g);
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79 Set<Resource> movedItems = new HashSet<Resource>();
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80 for (Resource src : srcs) {
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81 if (g.isInstanceOf(src, MOD.Subscription_Item)) {
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82 Resource model = g.syncRequest(new PossibleModel(src));
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83 if (ObjectUtils.objectEquals(targetModel, model))
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84 movedItems.add(src);
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87 if (!movedItems.isEmpty())
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88 return addSubscriptions(g, subscription, Collections.<VariableReference>emptyList(), movedItems);
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96 private Runnable addSubscriptions(ReadGraph graph, final Resource subscription, final List<VariableReference> references,
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97 final Set<Resource> movedSubscriptionItems) throws DatabaseException {
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98 final AddVariableToChartAction action = new AddVariableToChartAction(null, subscription, references);
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100 return new Runnable() {
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102 public void run() {
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104 if(!movedSubscriptionItems.isEmpty()) {
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105 Simantics.getSession().asyncRequest(new WriteRequest() {
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107 public void perform(WriteGraph graph) throws DatabaseException {
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108 Layer0 L0 = Layer0.getInstance(graph);
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109 for (Resource item : movedSubscriptionItems) {
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110 graph.deny(item, L0.PartOf);
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111 graph.claim(subscription, L0.ConsistsOf, item);
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114 }, new Callback<DatabaseException>() {
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116 public void run(DatabaseException e) {
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118 ErrorLogger.defaultLogError(e);
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126 static Datatype getDatatype(ReadGraph graph, Resource resource, RVI rvi) throws DatabaseException {
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127 Variable configuration = Variables.getConfigurationContext(graph, resource);
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128 Variable active = graph.syncRequest(new PossibleActiveVariableFromVariable(configuration));
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129 Variable var = rvi.resolve(graph, active != null ? active : configuration);
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130 return var.getDatatype(graph);
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