OpenTP1 Version 7 Description

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2.4.1 Features of MQA message queuing

When MQA message queuing is used, UAPs exchange messages via a queue manager. To put a message, set the destination in the message and catalog it to the queue manager. Then, the queue manager transfers the message to the queue manager of the recipient side. The user of the recipient side can get the message from the queue manager of the recipient side whenever the user decides.

Synchronization with the remote UAP is unnecessary when putting or getting messages. With the MQA message queuing, messages can be used like e-mail because the UAP can handle messages at any time.

Access from UAP to a queue uses MQI (Message Queue Interface). All the queue managers use MQI, so a program the user coded can be used in the system of another queue manager.

The queue that stores the MQA messages from UAPs is an MQA message queue. An MQA message queue can contain several queues arranged according to the purpose of the queue manager. For types of queues, see the OpenTP1 TP1/Message Queue User's Guide.

Figure 2-6 shows the overview of MQA message queuing.

Figure 2-6 Overview of MQA message queuing

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