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## org.mule.transport.email
Class RetrieveMessageRequester

    java.lang.Object
      org.mule.transport.AbstractTransportMessageHandler
          org.mule.transport.AbstractMessageRequester
              org.mule.transport.email.RetrieveMessageRequester

All Implemented Interfaces:
  Disposable, Initialisable, Lifecycle, LifecycleStateEnabled, Startable, Stoppable, Connectable, MessageRequester, MessageRequesting

    public class RetrieveMessageRequester

extends AbstractMessageRequester

This dispatcher can only be used to receive message (as opposed to listening for them). Trying to send or dispatch will throw an UnsupportedOperationException.

This contains a reference to a mail folder (and also the endpoint and connector, via superclasses)

Field Summary

Fields inherited from class org.mule.transport.AbstractTransportMessageHandler
`connected, connecting, connector, endpoint, lifecycleManager, logger, muleMessageFactory, retryTemplate, startOnConnect`

Fields inherited from interface org.mule.api.lifecycle.Initialisable
`PHASE_NAME`

Fields inherited from interface org.mule.api.lifecycle.Startable
`PHASE_NAME`

Fields inherited from interface org.mule.api.lifecycle.Stoppable
`PHASE_NAME`

Fields inherited from interface org.mule.api.lifecycle.Disposable
`PHASE_NAME`

Fields inherited from interface org.mule.api.transport.MessageRequesting
`REQUEST_NO_WAIT, REQUEST_WAIT_INDEFINITELY`

Constructor Summary
`RetrieveMessageRequester(InboundEndpoint endpoint)`

Method Summary
`protected void` | `doConnect()`
`protected void` | `doDisconnect()`
`protected void` | `doDispatch(MuleEvent event)`
`protected void` | `doDispose()`
`protected MuleMessage` | `doRequest(long timeout)` Make a specific request to the underlying transport.
`protected MuleMessage` | `doSend(MuleEvent event)`
`protected void` | `ensureFolderIsOpen(Folder fldr)`
`protected void` | `flagMessage(Message message)` There seems to be some variation on pop3 implementation so it may be preferrable to mark messages as seen here and also overload the getMessages method to grab only new messages
`protected int` | `getMessageCount()`
`protected Message` | `getNextMessage()`
`protected boolean` | `hasMessages()` Optimised check to se whether to return the message count and retrieve the messages.

Methods inherited from class org.mule.transport.AbstractMessageRequester
`applyInboundTransformers, createLifecycleManager, getEndpoint, getRequesterName, getWorkManager, initialise, request`

Methods inherited from class org.mule.transport.AbstractTransportMessageHandler
`activate, callDoStartWhenItIsConnected, connect, connectAndThenStart, createMuleMessage, createMuleMessage, createMuleMessage, createMuleMessageFactory, createNullMuleMessage, disconnect, dispose, disposeAndLogException, doInitialise, doStart, doStop, getConnectEventId, getConnectionDescription, getConnector, getLifecycleState, initializeMessageFactory, initializeRetryPolicy, isConnected, isConnecting, isDoStartMustFollowDoConnect, isDoThreading, isStarted, passivate, setEndpoint, start, stop, toString, validate, validateConnection`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait`

Methods inherited from interface org.mule.api.transport.MessageRequester
`activate, createMuleMessage, createMuleMessage, getConnector, passivate, validate`

Methods inherited from interface org.mule.api.transport.Connectable
`connect, disconnect, getConnectionDescription, isConnected, validateConnection`

Methods inherited from interface org.mule.api.lifecycle.Startable
`start`

Methods inherited from interface org.mule.api.lifecycle.Stoppable
`stop`

Methods inherited from interface org.mule.api.lifecycle.Disposable
`dispose`

Methods inherited from interface org.mule.api.lifecycle.LifecycleStateEnabled
`getLifecycleState`

Constructor Detail

### RetrieveMessageRequester

    public RetrieveMessageRequester(InboundEndpoint endpoint)

Method Detail

### doConnect

    protected void doConnect()
                      throws Exception

  Overrides:
    `doConnect` in class `AbstractTransportMessageHandler`
  Throws:
    `Exception`

### ensureFolderIsOpen

    protected void ensureFolderIsOpen(Folder fldr)

### doDisconnect

    protected void doDisconnect()
                         throws Exception

  Overrides:
    `doDisconnect` in class `AbstractTransportMessageHandler`
  Throws:
    `Exception`

### doDispatch

    protected void doDispatch(MuleEvent event)
                       throws Exception

  Parameters:
    `event` -
  Throws:
    `UnsupportedOperationException`
    `Exception`

### doSend

    protected MuleMessage doSend(MuleEvent event)
                          throws Exception

  Parameters:
    `event` -
  Throws:
    `UnsupportedOperationException`
    `Exception`

### doRequest

    protected MuleMessage doRequest(long timeout)
                             throws Exception

  Make a specific request to the underlying transport. Endpoint can be in the form of pop3://username:password@pop3.lotsofmail.org

  Specified by:
    `doRequest` in class `AbstractMessageRequester`
  Parameters:
    `timeout` - the maximum time the operation should block before returning. The call should return immediately if there is data available. If no data becomes available before the timeout elapses, null will be returned
  Returns:
    the result of the request wrapped in a MuleMessage object. Null will be returned if no data was avaialable
  Throws:
    `Exception` - if the call to the underlying protocal causes an exception

### flagMessage

    protected void flagMessage(Message message)
                        throws MessagingException

  There seems to be some variation on pop3 implementation so it may be preferrable to mark messages as seen here and also overload the getMessages method to grab only new messages

  Throws:
    `MessagingException`

### getNextMessage

    protected Message getNextMessage()
                              throws MessagingException

  Throws:
    `MessagingException`

### getMessageCount

    protected int getMessageCount()
                           throws MessagingException

  Throws:
    `MessagingException`

### hasMessages

    protected boolean hasMessages()
                           throws MessagingException

  Optimised check to se whether to return the message count and retrieve the messages. Some pop3 implementations differ so an optimised check such as folder.hasNewMessages() cannot be used

  Throws:
    `MessagingException`

### doDispose

    protected void doDispose()

  Overrides:
    `doDispose` in class `AbstractTransportMessageHandler`

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