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.adapter;
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14 import org.simantics.db.AsyncReadGraph;
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15 import org.simantics.db.ReadGraph;
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16 import org.simantics.db.Resource;
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17 import org.simantics.db.common.request.UniqueRead;
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18 import org.simantics.db.exception.DatabaseException;
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19 import org.simantics.db.procedure.AsyncProcedure;
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20 import org.simantics.g2d.canvas.ICanvasContext;
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21 import org.simantics.g2d.diagram.IDiagram;
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22 import org.simantics.g2d.element.ElementClass;
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23 import org.simantics.g2d.element.IElement;
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26 * A synchronous graph request wrapper for {@link ElementFactory} and
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27 * {@link ElementFactoryAdapter}. Using it will provide simpler but slower
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30 * @author Tuukka Lehtonen
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32 public class SyncElementFactory extends ElementFactoryAdapter {
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35 public void create(AsyncReadGraph graph, final ICanvasContext canvas, final IDiagram diagram,
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36 final Resource elementType, final AsyncProcedure<ElementClass> procedure) {
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37 graph.asyncRequest(new UniqueRead<ElementClass>() {
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39 public ElementClass perform(ReadGraph graph) throws DatabaseException {
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40 return create(graph, canvas, diagram, elementType);
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46 public void load(AsyncReadGraph graph, final ICanvasContext canvas, final IDiagram diagram,
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47 final Resource elementResource, final IElement element, final AsyncProcedure<IElement> procedure) {
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48 graph.asyncRequest(new UniqueRead<IElement>() {
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50 public IElement perform(ReadGraph graph) throws DatabaseException {
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51 if(isOk(graph, elementResource))
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52 load(graph, canvas, diagram, elementResource, element);
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58 public ElementClass create(ReadGraph graph, ICanvasContext canvas, IDiagram diagram, Resource elementType)
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59 throws DatabaseException {
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60 throw new UnsupportedOperationException();
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63 public boolean isOk(ReadGraph graph, Resource elementResource) throws DatabaseException {
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64 return graph.hasStatement(elementResource);
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67 public void load(ReadGraph graph, ICanvasContext canvas, IDiagram diagram, Resource elementResource, IElement element)
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68 throws DatabaseException {
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69 throw new UnsupportedOperationException();
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