1 /*******************************************************************************
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2 * Copyright (c) 2012 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 * Semantum Oy - initial API and implementation
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11 *******************************************************************************/
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12 package org.simantics.event;
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14 import java.util.UUID;
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16 import org.simantics.databoard.Bindings;
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17 import org.simantics.db.Resource;
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18 import org.simantics.db.WriteGraph;
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19 import org.simantics.db.common.request.WriteRequest;
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20 import org.simantics.db.exception.DatabaseException;
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21 import org.simantics.db.service.VirtualGraphSupport;
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22 import org.simantics.event.ontology.EventResource;
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23 import org.simantics.event.writer.EventSourceResolver;
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24 import org.simantics.event.writer.EventWriteTask;
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25 import org.simantics.event.writer.EventWriterJob;
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26 import org.simantics.layer0.Layer0;
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29 * @author Tuukka Lehtonen
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31 public class EventSupport {
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33 private Resource model;
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34 private Resource run;
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35 private EventSourceResolver.Filter filter;
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37 @SuppressWarnings("unused")
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38 private Resource eventLog;
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40 private EventWriterJob writer;
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41 private EventSourceResolver resolver;
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43 public EventSupport(Resource model, Resource run, EventSourceResolver.Filter filter) {
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46 this.filter = filter;
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49 public Resource initialize(WriteGraph graph) throws DatabaseException {
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50 Layer0 L0 = Layer0.getInstance(graph);
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51 final EventResource EVENT = EventResource.getInstance(graph);
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53 Resource log = graph.newResource();
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54 this.eventLog = log;
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55 graph.claim(log, L0.InstanceOf, null, EVENT.EventLog);
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56 graph.claimLiteral(log, L0.HasName, UUID.randomUUID().toString(), Bindings.STRING);
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57 graph.claim(model, EVENT.HasEventLog, log);
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58 graph.claim(model, L0.ConsistsOf, log);
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60 // Switch write to graph of run resource
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61 final Resource _log = log;
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62 VirtualGraphSupport support = graph.getService(VirtualGraphSupport.class);
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63 graph.syncRequest(new WriteRequest( support.getGraph(graph, run) ) {
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65 public void perform(WriteGraph graph) throws DatabaseException {
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66 graph.claim(_log, EVENT.HasEventProducer, run);
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70 // Start event writer & resolver services
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71 this.resolver = new EventSourceResolver(graph.getProvider(), log, filter);
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72 this.writer = new EventWriterJob(graph.getProvider(), log, this.resolver);
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73 this.resolver.schedule();
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78 public void queue(EventWriteTask task) {
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79 EventWriterJob w = writer;
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84 public void dispose() {
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85 if (writer != null) {
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89 if (resolver != null) {
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