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.contribution;
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14 import java.util.Collection;
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16 import org.simantics.browsing.ui.NodeContext;
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17 import org.simantics.browsing.ui.PrimitiveQueryUpdater;
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18 import org.simantics.browsing.ui.BuiltinKeys.ViewpointContributionKey;
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19 import org.simantics.db.AsyncReadGraph;
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20 import org.simantics.db.procedure.Listener;
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21 import org.simantics.db.procedure.Procedure;
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22 import org.simantics.utils.ui.ErrorLogger;
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25 * Implement {@link #children(AsyncReadGraph)} and {@link #hasChildren(AsyncReadGraph)}.
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27 * @author Tuukka Lehtonen
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29 abstract public class ViewpointContributionImpl extends FinalViewpointContributionImpl {
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31 public ViewpointContributionImpl(PrimitiveQueryUpdater updater,
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32 NodeContext context, ViewpointContributionKey key) {
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33 super(updater, context, key);
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37 protected Procedure<Collection<NodeContext>> createProcedure() {
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39 return new Listener<Collection<NodeContext>>() {
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42 public void execute(Collection<NodeContext> result) {
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43 replaceChildrenResult(result);
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47 public boolean isDisposed() {
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48 return updater.isDisposed();
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51 public void exception(Throwable t) {
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52 ErrorLogger.defaultLogError("LazyContributionImpl.childQuery failed, see exception for details.", t);
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56 public String toString() {
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57 return "LazyContributionImpl[" + System.identityHashCode(ViewpointContributionImpl.this) + "].childProcedure";
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