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   Using the BEA Tuxedo TOP END Domain Gateway

BEA Tuxedo Domains provides a framework for interoperability between the domains of a business that require administrative autonomy but allow sharing of services and data. The TOP END Domain Gateway (TEDG) extends the BEA Tuxedo Domains concept to include BEA TOP END interoperability. The TEDG supports transactional message passing and queuing between the BEA TOP END and BEA Tuxedo systems.

The TOP END Domain Gateway provides the following features:

• Message Passing

• Queue Processing

• Transactional Support

• Security

Message Passing

Message passing provides bi-directional communication between BEA TOP END and BEA Tuxedo user components. The primary message passing capabilities are:

• BEA TOP END client applications can initiate messages that are transparently delivered to BEA Tuxedo servers.

• BEA Tuxedo client applications can initiate messages that are transparently delivered to BEA TOP END servers.

• Request/response mode is supported in both directions.

• BEA TOP END pseudo-conversational mode is mapped to BEA Tuxedo conversational mode.

Queue Processing

Queue processing capabilities include:

• BEA TOP END application components can enqueue items onto BEA Tuxedo /Q queues.

• BEA Tuxedo applications can enqueue items onto BEA TOP END RTQ queues.

• Processing of requests from the queues is handled by the system that hosts the queue.

  • Requests enqueued to BEA TOP END RTQ queues are processed by the RTQ subsystem. BEA TOP END RTQ does not support an explicit dequeue concept.

  • Requests enqueued to BEA Tuxedo /Q queues may be explicitly dequeued by an application or processed via TMQFORWARD.

Transactional Support

Transactional support allows global transactions to span BEA Tuxedo systems and BEA TOP END systems. That is, if a global transaction is begun in a component of one product and subsequent messages or enqueuing operations are sent to components in another product, the scope of the transaction includes work performed by components in the second product.

The TOP END Domain Gateway provides the following security methods for communications:

• Authentication-Each domain performs local authentication of clients.

• Authorization-Existing BEA Tuxedo and Domains authorization is supported in the TOP END Domain Gateway.

• Encryption-The link between the TOP END Domain Gateway and the BEA TOP END system is optionally encrypted to ensure privacy.

See Also

• Interconnecting Systems with the TOP END Domain Gateway

• What Is the BEA Tuxedo Domains Component in Using the BEA Tuxedo Domains Component