Package org.apache.activemq.store

Class AbstractMessageStore

java.lang.Object

org.apache.activemq.store.AbstractMessageStore

All Implemented Interfaces:

org.apache.activemq.Service, MessageStore

Direct Known Subclasses:

MemoryMessageStore

public abstract class AbstractMessageStore
extends Object
implements MessageStore

Field Summary

Fields

Modifier and Type	Field	Description
protected final org.apache.activemq.command.ActiveMQDestination	destination
static final ListenableFuture<Object>	FUTURE
protected IndexListener	indexListener
protected final MessageStoreStatistics	messageStoreStatistics
protected boolean	prioritizedMessages

Constructor Summary

Constructors

Constructor	Description
AbstractMessageStore(org.apache.activemq.command.ActiveMQDestination destination)

Method Summary

Modifier and Type	Method	Description
void	addMessage(ConnectionContext context, org.apache.activemq.command.Message message, boolean canOptimizeHint)	Adds a message to the message store
ListenableFuture<Object>	asyncAddQueueMessage(ConnectionContext context, org.apache.activemq.command.Message message)	Adds a message to the message store
ListenableFuture<Object>	asyncAddQueueMessage(ConnectionContext context, org.apache.activemq.command.Message message, boolean canOptimizeHint)	Adds a message to the message store
ListenableFuture<Object>	asyncAddTopicMessage(ConnectionContext context, org.apache.activemq.command.Message message)	Adds a message to the message store
ListenableFuture<Object>	asyncAddTopicMessage(ConnectionContext context, org.apache.activemq.command.Message message, boolean canOptimizeHint)	Adds a message to the message store
void	dispose(ConnectionContext context)
org.apache.activemq.command.ActiveMQDestination	getDestination()	The destination that the message store is holding messages for.
IndexListener	getIndexListener()
int	getMessageCount()
long	getMessageSize()
MessageStoreStatistics	getMessageStoreStatistics()
boolean	isEmpty()	flag to indicate if the store is empty
boolean	isPrioritizedMessages()
protected void	recoverMessageStoreStatistics()
void	registerIndexListener(IndexListener indexListener)
void	removeAsyncMessage(ConnectionContext context, org.apache.activemq.command.MessageAck ack)
void	setBatch(org.apache.activemq.command.MessageId messageId)	allow caching cursors to set the current batch offset when cache is exhausted
void	setMemoryUsage(org.apache.activemq.usage.MemoryUsage memoryUsage)
void	setPrioritizedMessages(boolean prioritizedMessages)	A hint to the store to try recover messages according to priority
void	start()
void	stop()
void	updateMessage(org.apache.activemq.command.Message message)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.apache.activemq.store.MessageStore

addMessage, getMessage, recover, recoverNextMessages, removeAllMessages, removeMessage, resetBatching

Field Details

FUTURE

public static final ListenableFuture<Object> FUTURE

destination

protected final org.apache.activemq.command.ActiveMQDestination destination

prioritizedMessages

protected boolean prioritizedMessages

indexListener

protected IndexListener indexListener

messageStoreStatistics

protected final MessageStoreStatistics messageStoreStatistics

Constructor Details

AbstractMessageStore

public AbstractMessageStore(org.apache.activemq.command.ActiveMQDestination destination)

Method Details

dispose

public void dispose(ConnectionContext context)

Specified by:

dispose in interface MessageStore

start

public void start()
           throws Exception

Specified by:

start in interface org.apache.activemq.Service

Throws:

Exception

stop

public void stop()
          throws Exception

Specified by:

stop in interface org.apache.activemq.Service

Throws:

Exception

getDestination

public org.apache.activemq.command.ActiveMQDestination getDestination()

Description copied from interface: MessageStore

The destination that the message store is holding messages for.

Specified by:

getDestination in interface MessageStore

Returns:

the destination

setMemoryUsage

public void setMemoryUsage(org.apache.activemq.usage.MemoryUsage memoryUsage)

Specified by:

setMemoryUsage in interface MessageStore

Parameters:

memoryUsage - The SystemUsage that is controlling the destination's memory usage.

setBatch

public void setBatch(org.apache.activemq.command.MessageId messageId)
              throws IOException,
Exception

Description copied from interface: MessageStore

allow caching cursors to set the current batch offset when cache is exhausted

Specified by:

setBatch in interface MessageStore

Throws:

Exception

IOException

isEmpty

public boolean isEmpty()
                throws Exception

flag to indicate if the store is empty

Specified by:

isEmpty in interface MessageStore

Returns:

true if the message count is 0

Throws:

Exception

setPrioritizedMessages

public void setPrioritizedMessages(boolean prioritizedMessages)

Description copied from interface: MessageStore

A hint to the store to try recover messages according to priority

Specified by:

setPrioritizedMessages in interface MessageStore

isPrioritizedMessages

public boolean isPrioritizedMessages()

Specified by:

isPrioritizedMessages in interface MessageStore

Returns:

true if store is trying to recover messages according to priority

addMessage

public void addMessage(ConnectionContext context,
 org.apache.activemq.command.Message message,
 boolean canOptimizeHint)
                throws IOException

Description copied from interface: MessageStore

Adds a message to the message store

Specified by:

addMessage in interface MessageStore

Parameters:

context - context

canOptimizeHint - - give a hint to the store that the message may be consumed before it hits the disk

Throws:

IOException

asyncAddQueueMessage

public ListenableFuture<Object> asyncAddQueueMessage(ConnectionContext context,
 org.apache.activemq.command.Message message)
                                              throws IOException

Description copied from interface: MessageStore

Adds a message to the message store

Specified by:

asyncAddQueueMessage in interface MessageStore

Parameters:

context - context

Returns:

a Future to track when this is complete

Throws:

IOException

asyncAddQueueMessage

public ListenableFuture<Object> asyncAddQueueMessage(ConnectionContext context,
 org.apache.activemq.command.Message message,
 boolean canOptimizeHint)
                                              throws IOException

Description copied from interface: MessageStore

Adds a message to the message store

Specified by:

asyncAddQueueMessage in interface MessageStore

Parameters:

context - context

canOptimizeHint - - give a hint to the store that the message may be consumed before it hits the disk

Returns:

a Future to track when this is complete

Throws:

IOException

asyncAddTopicMessage

public ListenableFuture<Object> asyncAddTopicMessage(ConnectionContext context,
 org.apache.activemq.command.Message message,
 boolean canOptimizeHint)
                                              throws IOException

Description copied from interface: MessageStore

Adds a message to the message store

Specified by:

asyncAddTopicMessage in interface MessageStore

Parameters:

context - context

canOptimizeHint - - give a hint to the store that the message may be consumed before it hits the disk

Returns:

a ListenableFuture to track when this is complete

Throws:

IOException

asyncAddTopicMessage

public ListenableFuture<Object> asyncAddTopicMessage(ConnectionContext context,
 org.apache.activemq.command.Message message)
                                              throws IOException

Description copied from interface: MessageStore

Adds a message to the message store

Specified by:

asyncAddTopicMessage in interface MessageStore

Parameters:

context - context

Returns:

a ListenableFuture to track when this is complete

Throws:

IOException

removeAsyncMessage

public void removeAsyncMessage(ConnectionContext context,
 org.apache.activemq.command.MessageAck ack)
                        throws IOException

Specified by:

removeAsyncMessage in interface MessageStore

Throws:

IOException

updateMessage

public void updateMessage(org.apache.activemq.command.Message message)
                   throws IOException

Specified by:

updateMessage in interface MessageStore

Throws:

IOException

registerIndexListener

public void registerIndexListener(IndexListener indexListener)

Specified by:

registerIndexListener in interface MessageStore

getIndexListener

public IndexListener getIndexListener()

getMessageCount

public int getMessageCount()
                    throws IOException

Specified by:

getMessageCount in interface MessageStore

Returns:

the number of messages ready to deliver

Throws:

IOException

getMessageSize

public long getMessageSize()
                    throws IOException

Specified by:

getMessageSize in interface MessageStore

Returns:

the size of the messages ready to deliver

Throws:

IOException

getMessageStoreStatistics

public MessageStoreStatistics getMessageStoreStatistics()

Specified by:

getMessageStoreStatistics in interface MessageStore

Returns:

The statistics bean for this message store

recoverMessageStoreStatistics

protected void recoverMessageStoreStatistics()
                                      throws IOException

Throws:

IOException