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1   /*
2    * $Id: DirectComponent.java 11728 2008-05-13 07:31:11Z dirk.olmes $
3    * --------------------------------------------------------------------------------------
4    * Copyright (c) MuleSource, Inc.  All rights reserved.  http://www.mulesource.com
5    *
6    * The software in this package is published under the terms of the CPAL v1.0
7    * license, a copy of which has been included with this distribution in the
8    * LICENSE.txt file.
9    */
10  
11  package org.mule.impl.model.direct;
12  
13  import org.mule.impl.MuleDescriptor;
14  import org.mule.impl.MuleMessage;
15  import org.mule.impl.model.AbstractComponent;
16  import org.mule.impl.model.DefaultMuleProxy;
17  import org.mule.impl.model.MuleProxy;
18  import org.mule.umo.UMOEvent;
19  import org.mule.umo.UMOException;
20  import org.mule.umo.UMOMessage;
21  import org.mule.umo.lifecycle.InitialisationException;
22  import org.mule.umo.model.UMOModel;
23  
24  import java.util.List;
25  
26  /**
27   * A direct component invokes the service component directly without any threading or
28   * pooling, even when the invocation is asynchronous
29   */
30  public class DirectComponent extends AbstractComponent
31  {
32      /**
33       * Serial version
34       */
35      private static final long serialVersionUID = -8590955440156945732L;
36  
37      protected List interceptorList = null;
38      protected MuleProxy proxy;
39  
40      public DirectComponent(MuleDescriptor descriptor, UMOModel model)
41      {
42          super(descriptor, model);
43      }
44  
45      protected void doInitialise() throws InitialisationException
46      {
47  
48          try
49          {
50              Object component = lookupComponent();
51              proxy = new DefaultMuleProxy(component, descriptor, model);
52              proxy.setStatistics(getStatistics());
53          }
54          catch (UMOException e)
55          {
56              throw new InitialisationException(e, this);
57          }
58      }
59  
60      protected UMOMessage doSend(UMOEvent event) throws UMOException
61      {
62  
63          Object obj = proxy.onCall(event);
64          if (obj instanceof UMOMessage)
65          {
66              return (UMOMessage) obj;
67          }
68          else
69          {
70              return new MuleMessage(obj, event.getMessage());
71          }
72      }
73  
74      protected void doDispatch(UMOEvent event) throws UMOException
75      {
76          proxy.onCall(event);
77      }
78  
79      protected void doStop() throws UMOException
80      {
81          proxy.stop();
82      }
83  
84      protected void doStart() throws UMOException
85      {
86          proxy.start();
87      }
88  
89      protected void doPause()
90      {
91          proxy.suspend();
92      }
93  
94      protected void doResume()
95      {
96          proxy.resume();
97      }
98  
99      protected void doDispose()
100     {
101         proxy.dispose();
102     }
103 }