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1   /*
2    * $Id: JdbcMessageRequester.java 10961 2008-02-22 19:01:02Z dfeist $
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.transport.jdbc;
12  
13  import org.mule.api.MuleEvent;
14  import org.mule.api.MuleMessage;
15  import org.mule.api.endpoint.InboundEndpoint;
16  import org.mule.transport.AbstractMessageRequester;
17  
18  
19  public class JdbcMessageRequester extends AbstractMessageRequester
20  {
21  
22      private JdbcConnector connector;
23  
24      public JdbcMessageRequester(InboundEndpoint endpoint)
25      {
26          super(endpoint);
27          this.connector = (JdbcConnector) endpoint.getConnector();
28      }
29  
30      /*
31       * (non-Javadoc)
32       *
33       * @see org.mule.transport.AbstractMessageDispatcher#doDispose()
34       */
35      protected void doDispose()
36      {
37          // template method
38      }
39  
40      /**
41       * Make a specific request to the underlying transport
42       *
43       * @param timeout the maximum time the operation should block before returning.
44       *            The call should return immediately if there is data available. If
45       *            no data becomes available before the timeout elapses, null will be
46       *            returned
47       * @return the result of the request wrapped in a MuleMessage object. Null will be
48       *         returned if no data was available
49       * @throws Exception if the call to the underlying protocol causes an exception
50       */
51      protected MuleMessage doRequest(long timeout) throws Exception
52      {
53          return doRequest(timeout, null);
54      }
55  
56      /**
57       * Make a specific request to the underlying transport
58       * Special case: The event is need when doReceive was called from doSend
59       * @param timeout only for compatibility with doRequest(long timeout)
60       * @param event There is a need to get params from message
61       * @return the result of the request wrapped in a MuleMessage object. Null will be
62       *         returned if no data was available
63       * @throws Exception if the call to the underlying protocol causes an exception
64       */
65      protected MuleMessage doRequest(long timeout, MuleEvent event) throws Exception
66      {
67          return JdbcMessageDispatcher.executeRequest(timeout, event, connector, endpoint);
68      }
69  
70  
71      protected void doConnect() throws Exception
72      {
73          // template method
74      }
75  
76      protected void doDisconnect() throws Exception
77      {
78          // template method
79      }
80  
81  }