projects / deliverable / tracecompass.git / blame
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|---|---|---|
| 5d10d135 ASL |
1 | /******************************************************************************* |
| 2 | * Copyright (c) 2009 Ericsson | |
| 3 | * | |
| 4 | * All rights reserved. This program and the accompanying materials are | |
| 5 | * made available under the terms of the Eclipse Public License v1.0 which | |
| 6 | * accompanies this distribution, and is available at | |
| 7 | * http://www.eclipse.org/legal/epl-v10.html | |
| 8 | * | |
| 9 | * Contributors: | |
| 10 | * Alvaro Sanchez-Leon (alvsan09@gmail.com) - Initial API and implementation | |
| 11 | *******************************************************************************/ | |
| 12 | ||
| 13 | package org.eclipse.linuxtools.lttng.state.evProcessor; | |
| 14 | ||
| 15 | import java.util.HashSet; | |
| 16 | import java.util.Set; | |
| 17 | ||
| 18 | import org.eclipse.linuxtools.lttng.TraceDebug; | |
| 88144d4a | 19 | import org.eclipse.linuxtools.lttng.state.evProcessor.state.StateUpdateFactory; |
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20 | |
| 21 | /** | |
| 22 | * @author alvaro | |
| 23 | * | |
| 24 | */ | |
| 25 | public class EventProcessorProxy { | |
| 26 | // ======================================================================== | |
| 27 | // Data | |
| 28 | // ======================================================================= | |
| 29 | private static EventProcessorProxy instance = null; | |
| 88144d4a | 30 | private final Set<AbsEventProcessorFactory> processingFactories = new HashSet<AbsEventProcessorFactory>(); |
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31 | |
| 32 | ||
| 33 | // ======================================================================== | |
| 34 | // Constructors | |
| 35 | // ======================================================================= | |
| 36 | public EventProcessorProxy() { | |
| 37 | // Manual creation of State update factory | |
| 88144d4a | 38 | addEventProcessorFactory(StateUpdateFactory.getInstance()); |
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39 | } |
| 40 | ||
| 41 | // ======================================================================== | |
| 42 | // Methods | |
| 43 | // ======================================================================= | |
| 44 | /** | |
| 45 | * @return the processingFactories | |
| 46 | */ | |
| 88144d4a | 47 | public Set<AbsEventProcessorFactory> getProcessingFactories() { |
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48 | return processingFactories; |
| 49 | } | |
| 50 | ||
| 51 | /** | |
| 52 | * Returns this singleton | |
| 53 | * | |
| 54 | * @return | |
| 55 | */ | |
| 56 | public static EventProcessorProxy getInstance() { | |
| 57 | if (instance == null) { | |
| 58 | instance = new EventProcessorProxy(); | |
| 59 | } | |
| 60 | ||
| 61 | return instance; | |
| 62 | } | |
| 63 | ||
| 64 | /** | |
| 65 | * Register a factory of event handler methods, each factory provides a map | |
| 66 | * to Before and After state update handlers | |
| 67 | * | |
| 68 | * @param handlersFactory | |
| 69 | */ | |
| 70 | public void addEventProcessorFactory( | |
| 88144d4a | 71 | AbsEventProcessorFactory handlersFactory) { |
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72 | if (handlersFactory != null) { |
| 73 | //only add the listener if not already included | |
| 74 | if (!processingFactories.contains(handlersFactory)) { | |
| 75 | processingFactories.add(handlersFactory); | |
| 76 | } | |
| 77 | } else { | |
| 78 | TraceDebug | |
| 79 | .debug("An attempt to register a null factory has been detected"); | |
| 80 | } | |
| 81 | } | |
| 82 | ||
| 83 | /** | |
| 84 | * Remove a factory previously added with addEventProcessorFactory | |
| 85 | * | |
| 86 | * @param handlersFactory | |
| 87 | */ | |
| 88 | public void removeEventProcessorFactory( | |
| 88144d4a | 89 | AbsEventProcessorFactory handlersFactory) { |
| 5d10d135 ASL |
90 | if (handlersFactory != null) { |
| 91 | processingFactories.remove(handlersFactory); | |
| 92 | } | |
| 93 | } | |
| 94 | ||
| 95 | } |