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.db.common.uri;
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14 import java.util.Map;
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15 import java.util.concurrent.ConcurrentHashMap;
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17 import org.simantics.databoard.util.URIStringUtils;
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18 import org.simantics.db.AsyncReadGraph;
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19 import org.simantics.db.Resource;
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20 import org.simantics.db.common.ProcedureBarrier;
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21 import org.simantics.db.common.WriteBindings;
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22 import org.simantics.db.common.procedure.adapter.AsyncMultiProcedureAdapter;
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23 import org.simantics.db.common.request.ResourceAsyncRead;
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24 import org.simantics.db.procedure.AsyncProcedure;
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25 import org.simantics.layer0.Layer0;
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27 public class EscapedChildMapOfResource extends ResourceAsyncRead<Map<String, Resource>> {
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29 public EscapedChildMapOfResource(Resource resource) {
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34 public void perform(AsyncReadGraph g, final AsyncProcedure<Map<String, Resource>> procedure) {
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36 final Layer0 L0 = g.getService(Layer0.class);
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37 final ConcurrentHashMap<String, Resource> map = new ConcurrentHashMap<String, Resource>();
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38 final ProcedureBarrier<Map<String, Resource>> barrier = new ProcedureBarrier<Map<String, Resource>>(1);
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40 g.forEachObject(resource, L0.ConsistsOf, new AsyncMultiProcedureAdapter<Resource>() {
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43 public void execute(AsyncReadGraph g, final Resource child) {
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44 barrier.incrementAndGet();
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46 g.forPossibleRelatedValue(child, L0.HasName, WriteBindings.STRING, new AsyncProcedure<Object>() {
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49 public void execute(AsyncReadGraph g, Object name) {
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51 String escapedName = URIStringUtils.escape((String)name);
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52 if (map.put(escapedName, child) != null)
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53 System.err.println(this + ": The database contains siblings with the same name " + escapedName + " (resource=" + resource.getResourceId() +").");
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55 barrier.dec(g, procedure, map);
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59 public void exception(AsyncReadGraph graph, Throwable t) {
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60 barrier.dec(graph, procedure, t);
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67 public void exception(AsyncReadGraph graph, Throwable t) {
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68 barrier.dec(graph, procedure, t);
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72 public void finished(AsyncReadGraph g) {
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73 barrier.dec(g, procedure, map);
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