When does a message be acknowledged actually

How Can a message be acknowledged
Say that i had created a QueueSession using the
QueueSession createQueueSession(true,client_acknowledge)
If i post a Message , please tell me when does it gets acknowledged ??
Either
1. When Successfully Posted to The Queue
Or only when the Consumer Recievies that Message using that Message using the recieve Method .

In the call to QueueSession.createSession(boolean transacted, int acknowledgeMode), the acknowledgeMode parameter indicates how incoming messages will be acknowledged. If you set it to Session.AUTO_ACKNOWLEDGE then the message will be automatically acknowledged when it is received by the consumer. If you set it to Session.CLIENT_ACKNOWLEDGE then the message will not be acknowledged until the receiving application explicitly calls Message.acknowledge().
Note that this behaviour concerns only the delivery of messages from the JMS server to a consuming client. The acknowledgement is sent from the consuming client to the server. The server then knows that the message has been successfully delivered and can delete it from the queue.
The client that sent the original message knows nothing about any of this.
Nigel

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When and how does the message context get removed from the message when we use pass thru send port

Friends,
i have a doubt regarding message context.
Assume i have used XMLRecieve pipeline in the receive side to receive the message so that the message context is created. I.e properties are promoted/written.
now if we use pass thru transmit pipe line at send side, how and when does the message context get removed from the message?? Since pass thru does not have any stages/components, how does the message context removed and sent out a pure message to destination???
i mean what exactly happens here to remove the context??
Ravindar

Thanks for the reply.
"The Context is created by the Adapter, regardless of any Pipeline or Pipeline Component. It has nothing to do with PassThrough vs. XmlReceive, although XmlReceive will write Promoted Properties to the existing Context,
as can any other Component."
yeah yeah, adapter does create some properties in context. You are right, i am aware of it. I just missed to explain it clearly. what i meant is addition of context properties will not happen if pass thru used. Thanks its clear.
"No. The Context already exists on the Message when it comes from the MessageBox and
is equally available to any Component in any Stage. The Context that hits the Pipeline is whatever was last Persisted, either by a Receive Port or Orchestration. It is not created by the XmlAssembler (XmlTransmit)"
You are right , the context already exists on the message while it leaves the receive port, and once it persists
to message box the context and message context gets stored in messages in relative tables.
Now as you said the components get the message from the last persistence, assume i have a send port(with passthru)
subscriber and a orchestration subsrciber for this message.
Orchestration gets the message with context right!!
if the send sendport(with passthru) also gets message along with context, then where is this context removed/demoted
while sending it out?. i guess as per SAAkhlaq said,
here sendport(with passthru) should get a pure message without context as passthru used.
or is it that ultimately send adapter removes the context completely?
or is it something like biztalk run time load the context from database into cache and both orchestration and send port gets pure message, and if needed they use context from cache???
sorry i may be troubling you, but i am confused. i hope i am not creating any nuisance with this
post.
Ravindar

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Message was edited by: Fivepi

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