Interfaces for a Solicit-Response Send Adapter

Send adapters use the same batch mechanism as receive adapters to submit response messages back into the server.

Note

It is recommended that a solicit-response adapter is process messages asynchronously. If the adapter processes message in a synchronous manner, there is a risk of message duplication.

Send adapters need to implement the following interfaces to work in solicit-response mode:

• IBTTransport

• IBaseComponent

• IBTTransportControl

• IPersistPropertyBag

• IBTTransmitter

• IBTTransmitterBatch and IBTBatchTransmitter (if send batching is required)

• IBTBatchCallBack

  The steps involved in the object interaction are as follows:

1. After the adapter sends a solicit message, it receives back a response message from that destination server. It then obtains a batch from the transport proxy.

2. The adapter adds the response message to the batch by calling IBTTransportProxy::SubmitResponseMessage.

3. The adapter submits the batch by calling IBTTransportProxy::Done passing in a pointer to its IBTBatchComplete interface for the callback from the Messaging Engine.

4. The Messaging Engine calls the adapter's IBTBatchCallBack::BatchComplete callback method using the transport proxy notifying it of the result of submission operation.

   The following figure shows the object interactions involved in creating a solicit-response send adapter.

   
   Interaction diagram for a solicit-response send adapter

See Also

Adapter Variables
Developing a Send Adapter
Instantiating and Initializing a Send Adapter
Interfaces for a Synchronous Send Adapter
Interfaces for an Asynchronous Send Adapter
Interfaces for a Synchronous Batch-Supported Send Adapter
Interfaces for an Asynchronous Batch-Supported Send Adapter
Interfaces for a Transactional Asynchronous Batch-Supported Send Adapter