001    /**
002     * Copyright (c) 2000-2013 Liferay, Inc. All rights reserved.
003     *
004     * This library is free software; you can redistribute it and/or modify it under
005     * the terms of the GNU Lesser General Public License as published by the Free
006     * Software Foundation; either version 2.1 of the License, or (at your option)
007     * any later version.
008     *
009     * This library is distributed in the hope that it will be useful, but WITHOUT
010     * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
011     * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
012     * details.
013     */
014    
015    package com.liferay.portal.kernel.workflow.messaging;
016    
017    import com.liferay.portal.kernel.log.Log;
018    import com.liferay.portal.kernel.log.LogFactoryUtil;
019    import com.liferay.portal.kernel.messaging.BaseDestinationEventListener;
020    import com.liferay.portal.kernel.messaging.DestinationNames;
021    import com.liferay.portal.kernel.messaging.MessageBusUtil;
022    import com.liferay.portal.kernel.messaging.MessageListener;
023    
024    /**
025     * @author Michael C. Han
026     */
027    public class DefaultWorkflowDestinationEventListener
028            extends BaseDestinationEventListener {
029    
030            @Override
031            public void messageListenerRegistered(
032                    String destinationName, MessageListener messageListener) {
033    
034                    if (_log.isInfoEnabled()) {
035                            _log.info(
036                                    "Unregistering default workflow engine " + _workflowEngineName);
037                    }
038    
039                    if (!isProceed(destinationName, messageListener)) {
040                            return;
041                    }
042    
043                    MessageBusUtil.unregisterMessageListener(
044                            DestinationNames.WORKFLOW_DEFINITION,
045                            _workflowDefinitionManagerListener);
046    
047                    MessageBusUtil.unregisterMessageListener(
048                            DestinationNames.WORKFLOW_ENGINE, _workflowEngineManagerListener);
049    
050                    MessageBusUtil.unregisterMessageListener(
051                            DestinationNames.WORKFLOW_INSTANCE,
052                            _workflowInstanceManagerListener);
053    
054                    MessageBusUtil.unregisterMessageListener(
055                            DestinationNames.WORKFLOW_LOG, _workflowLogManagerListener);
056    
057                    MessageBusUtil.unregisterMessageListener(
058                            DestinationNames.WORKFLOW_TASK, _workflowTaskManagerListener);
059            }
060    
061            @Override
062            public void messageListenerUnregistered(
063                    String destinationName, MessageListener messageListener) {
064    
065                    if (!isProceed(destinationName, messageListener)) {
066                            return;
067                    }
068    
069                    if (_log.isInfoEnabled()) {
070                            _log.info(
071                                    "Registering default workflow engine " + _workflowEngineName);
072                    }
073    
074                    MessageBusUtil.registerMessageListener(
075                            DestinationNames.WORKFLOW_DEFINITION,
076                            _workflowDefinitionManagerListener);
077    
078                    MessageBusUtil.registerMessageListener(
079                            DestinationNames.WORKFLOW_ENGINE, _workflowEngineManagerListener);
080    
081                    MessageBusUtil.registerMessageListener(
082                            DestinationNames.WORKFLOW_INSTANCE,
083                            _workflowInstanceManagerListener);
084    
085                    MessageBusUtil.registerMessageListener(
086                            DestinationNames.WORKFLOW_LOG, _workflowLogManagerListener);
087    
088                    MessageBusUtil.registerMessageListener(
089                            DestinationNames.WORKFLOW_TASK, _workflowTaskManagerListener);
090            }
091    
092            public void setWorkflowDefinitionManagerListener(
093                    MessageListener workflowDefinitionManagerListener) {
094    
095                    _workflowDefinitionManagerListener = workflowDefinitionManagerListener;
096            }
097    
098            public void setWorkflowEngineManagerListener(
099                    MessageListener workflowEngineManagerListener) {
100    
101                    _workflowEngineManagerListener = workflowEngineManagerListener;
102            }
103    
104            public void setWorkflowEngineName(String workflowEngineName) {
105                    _workflowEngineName = workflowEngineName;
106            }
107    
108            public void setWorkflowInstanceManagerListener(
109                    MessageListener workflowInstanceManagerListener) {
110    
111                    _workflowInstanceManagerListener = workflowInstanceManagerListener;
112            }
113    
114            public void setWorkflowLogManagerListener(
115                    MessageListener workflowLogManagerListener) {
116    
117                    _workflowLogManagerListener = workflowLogManagerListener;
118            }
119    
120            public void setWorkflowTaskManagerListener(
121                    MessageListener workflowTaskManagerListener) {
122    
123                    _workflowTaskManagerListener = workflowTaskManagerListener;
124            }
125    
126            protected boolean isProceed(
127                    String destinationName, MessageListener messageListener) {
128    
129                    if (messageListener.equals(_workflowEngineManagerListener)) {
130                            return false;
131                    }
132                    else {
133                            return true;
134                    }
135            }
136    
137            private static Log _log = LogFactoryUtil.getLog(
138                    DefaultWorkflowDestinationEventListener.class);
139    
140            private MessageListener _workflowDefinitionManagerListener;
141            private MessageListener _workflowEngineManagerListener;
142            private String _workflowEngineName;
143            private MessageListener _workflowInstanceManagerListener;
144            private MessageListener _workflowLogManagerListener;
145            private MessageListener _workflowTaskManagerListener;
146    
147    }