AcknowledgementMode class

Indicates how messages should be acknowledged by QAnywhere client applications.

Syntax

public class AcknowledgementMode

Members

All members of AcknowledgementMode class, including all inherited members.

Name	Description
EXPLICIT_ACKNOWLEDGEMENT variable	Indicates that received messages are acknowledged using one of the QAManager acknowledge methods.
IMPLICIT_ACKNOWLEDGEMENT variable	Indicates that all messages are acknowledged as soon as they are received by a client application.
TRANSACTIONAL variable	Indicates that messages are only acknowledged as part of the ongoing transaction.

The IMPLICIT_ACKNOWLEDGEMENT and EXPLICIT_ACKNOWLEDGEMENT modes are assigned to a QAManager instance using the QAManager::open() method. The TRANSACTIONAL mode is implicitly assigned to QATransactionalManager instances.

For more information, see Initializing a QAnywhere API.

In implicit acknowledgement mode, messages are acknowledged as soon as they are received by a client application. In explicit acknowledgement mode, you must call one of the QAManager acknowledgement methods. In transactional mode, you must call the QATransactionalManager::commit() method to acknowledge all outstanding messages. The server propagates all status changes from client to client.

For more information, see Receiving messages synchronously and Receiving messages asynchronously.

For transactional messaging, use the QATransactionalManager. In this case, you use the QATransactionalManager::commit method to acknowledge messages belonging to a transaction.

You can determine the mode of a QAManagerBase instance using the QAManagerBase::Mode property.