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## org.codehaus.activemq.store.bdbn
Class BDbMessageStore

    java.lang.Object
      org.codehaus.activemq.store.bdbn.BDbMessageStore

All Implemented Interfaces:
  MessageStore, Service

Direct Known Subclasses:
  BDbTopicMessageStore

public class BDbMessageStore
extends Object
implements MessageStore

An implementation of `MessageStore` using native C Berkeley DB

Version:
  $Revision: 1.2 $

Constructor Summary
`BDbMessageStore()`

Method Summary
`MessageIdentity` | `addMessage(ActiveMQMessage message)` Adds a message to the message store
`protected byte[]` | `asBytes(ActiveMQMessage message)`
`protected byte[]` | `asBytes(String messageID)`
`protected com.sleepycat.db.Dbt` | `createKey(String messageID)`
`protected ActiveMQMessage` | `extractMessage(com.sleepycat.db.Dbt value)`
`ActiveMQMessage` | `getMessage(MessageIdentity identity)` Looks up a message using either the String messageID or the messageNumber.
`void` | `recover(QueueMessageContainer container)` Recover any messages to be delivered onto the dispatch queue.
`void` | `removeMessage(MessageIdentity identity, MessageAck ack)`
`void` | `setMessageContainer(MessageContainer container)`
`void` | `start()` Called to start the service
`void` | `stop()` Called to shutdown the service

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

Constructor Detail

### BDbMessageStore

    public BDbMessageStore()

Method Detail

### setMessageContainer

    public void setMessageContainer(MessageContainer container)

### addMessage

    public MessageIdentity addMessage(ActiveMQMessage message)
                               throws JMSException

  Description copied from interface: `MessageStore`
  Adds a message to the message store

  Specified by:
    `addMessage` in interface `MessageStore`
  Throws:
    `JMSException`

### getMessage

    public ActiveMQMessage getMessage(MessageIdentity identity)
                               throws JMSException

  Description copied from interface: `MessageStore`
  Looks up a message using either the String messageID or the messageNumber. Implementations are encouraged to fill in the missing key if its easy to do so.

  Specified by:
    `getMessage` in interface `MessageStore`
  Parameters:
    `identity` - which contains either the messageID or the messageNumber
  Returns:
    the message or null if it does not exist
  Throws:
    `JMSException`

### removeMessage

    public void removeMessage(MessageIdentity identity,
                              MessageAck ack)
                       throws JMSException

  Specified by:
    `removeMessage` in interface `MessageStore`
  Throws:
    `JMSException`

### recover

    public void recover(QueueMessageContainer container)
                 throws JMSException

  Description copied from interface: `MessageStore`
  Recover any messages to be delivered onto the dispatch queue.

  Only called when this store is used for durable queues.

  Specified by:
    `recover` in interface `MessageStore`
  Parameters:
    `container` -
  Throws:
    `JMSException`

### start

    public void start()
               throws JMSException

  Description copied from interface: `Service`
  Called to start the service

  Specified by:
    `start` in interface `Service`
  Throws:
    `JMSException`

### stop

    public void stop()
              throws JMSException

  Description copied from interface: `Service`
  Called to shutdown the service

  Specified by:
    `stop` in interface `Service`
  Throws:
    `JMSException`

### createKey

    protected com.sleepycat.db.Dbt createKey(String messageID)

### extractMessage

    protected ActiveMQMessage extractMessage(com.sleepycat.db.Dbt value)
                                      throws IOException

  Throws:
    `IOException`

### asBytes

    protected byte[] asBytes(ActiveMQMessage message)
                      throws IOException,
                             JMSException

  Throws:
    `IOException`
    `JMSException`

### asBytes

    protected byte[] asBytes(String messageID)

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