1 /*******************************************************************************
2 * Copyright (c) 2007, 2010 Association for Decentralized Information Management
4 * All rights reserved. This program and the accompanying materials
5 * are made available under the terms of the Eclipse Public License v1.0
6 * which accompanies this distribution, and is available at
7 * http://www.eclipse.org/legal/epl-v10.html
10 * VTT Technical Research Centre of Finland - initial API and implementation
11 *******************************************************************************/
12 package org.simantics.diagram.content;
14 import java.util.HashSet;
15 import java.util.concurrent.ConcurrentLinkedQueue;
16 import java.util.concurrent.atomic.AtomicInteger;
18 import org.simantics.db.AsyncReadGraph;
19 import org.simantics.db.Resource;
20 import org.simantics.db.common.request.ResourceAsyncRead;
21 import org.simantics.db.procedure.AsyncMultiProcedure;
22 import org.simantics.db.procedure.AsyncProcedure;
23 import org.simantics.diagram.stubs.DiagramResource;
24 import org.simantics.diagram.synchronization.ErrorHandler;
27 * @author Antti Villberg
28 * @author Tuukka Lehtonen
30 public class ConnectionPartRequest extends ResourceAsyncRead<ConnectionPartData> {
32 final ErrorHandler errorHandler;
34 final DiagramResource dr;
36 public ConnectionPartRequest(ErrorHandler errorHandler, DiagramResource dr, Resource resource) {
38 this.errorHandler = errorHandler;
43 public void perform(AsyncReadGraph graph, final AsyncProcedure<ConnectionPartData> procedure) {
45 final AtomicInteger ready = new AtomicInteger(3);
46 final ConnectionPartData result = new ConnectionPartData();
47 final HashSet<EdgeResource> connectorEdges = new HashSet<EdgeResource>();
48 final HashSet<EdgeResource> branchEdges = new HashSet<EdgeResource>();
50 result.edges = connectorEdges;
51 result.branchPoints = new ConcurrentLinkedQueue<Resource>();
53 AsyncMultiProcedure<Resource> locationProcedure = new AsyncMultiProcedure<Resource>() {
56 public void exception(AsyncReadGraph graph, Throwable throwable) {
57 errorHandler.error("forEachObject(connection, Has I/O) failure", throwable);
61 public void execute(AsyncReadGraph graph, final Resource location) {
63 ready.incrementAndGet();
65 graph.forEachObject(location, dr.AreConnected, new AsyncMultiProcedure<Resource>() {
68 public void exception(AsyncReadGraph graph, Throwable throwable) {
69 errorHandler.error("forEachObject(:I/O Connector, Are Connected) failure", throwable);
73 public void execute(AsyncReadGraph graph, Resource connectedTo) {
74 synchronized (connectorEdges) {
75 connectorEdges.add(new EdgeResource(location, connectedTo));
80 public void finished(AsyncReadGraph graph) {
81 if (ready.decrementAndGet() == 0) {
82 connectorEdges.addAll(branchEdges);
83 procedure.execute(graph, result);
92 public void finished(AsyncReadGraph graph) {
93 if (ready.decrementAndGet() == 0) {
94 connectorEdges.addAll(branchEdges);
95 procedure.execute(graph, result);
101 AsyncMultiProcedure<Resource> locationProcedure2 = new AsyncMultiProcedure<Resource>() {
104 public void exception(AsyncReadGraph graph, Throwable throwable) {
105 errorHandler.error("forEachObject(connection, Has Branch Point) failure", throwable);
109 public void execute(AsyncReadGraph graph, final Resource location) {
111 ready.incrementAndGet();
113 result.branchPoints.add(location);
115 graph.forEachObject(location, dr.AreConnected, new AsyncMultiProcedure<Resource>() {
118 public void exception(AsyncReadGraph graph, Throwable throwable) {
119 errorHandler.error("forEachObject(:Branch Point, Are Connected) failure", throwable);
123 public void execute(AsyncReadGraph graph, Resource connectedTo) {
124 synchronized (branchEdges) {
125 branchEdges.add(new EdgeResource(location, connectedTo));
130 public void finished(AsyncReadGraph graph) {
131 if (ready.decrementAndGet() == 0) {
132 connectorEdges.addAll(branchEdges);
133 procedure.execute(graph, result);
142 public void finished(AsyncReadGraph graph) {
143 if (ready.decrementAndGet() == 0) {
144 connectorEdges.addAll(branchEdges);
145 procedure.execute(graph, result);
151 AsyncMultiProcedure<Resource> locationProcedure3 = new AsyncMultiProcedure<Resource>() {
154 public void exception(AsyncReadGraph graph, Throwable throwable) {
155 errorHandler.error("forEachObject(connection, Has I/O) failure", throwable);
159 public void execute(AsyncReadGraph graph, final Resource location) {
161 ready.incrementAndGet();
163 graph.forEachObject(location, dr.AreConnected, new AsyncMultiProcedure<Resource>() {
166 public void exception(AsyncReadGraph graph, Throwable throwable) {
167 errorHandler.error("forEachObject(:I/O Connector, Are Connected) failure", throwable);
171 public void execute(AsyncReadGraph graph, Resource connectedTo) {
172 synchronized (connectorEdges) {
173 connectorEdges.add(new EdgeResource(connectedTo, location));
178 public void finished(AsyncReadGraph graph) {
179 if (ready.decrementAndGet() == 0) {
180 connectorEdges.addAll(branchEdges);
181 procedure.execute(graph, result);
190 public void finished(AsyncReadGraph graph) {
191 if (ready.decrementAndGet() == 0) {
192 connectorEdges.addAll(branchEdges);
193 procedure.execute(graph, result);
199 graph.forEachObject(resource, dr.HasPlainConnector, locationProcedure);
200 graph.forEachObject(resource, dr.HasBranchPoint, locationProcedure2);
201 graph.forEachObject(resource, dr.HasArrowConnector, locationProcedure3);