The request data handler handles data conversion for the WebSphere Business Integration Server Express component that initiates a request:
With InterChange Server Express, the collaboration creates the request business object and sends it to the appropriate connector for request processing.
With InterChange Server Express, you can use an access client to initiate synchronous event processing. For more information, see Support for event processing.
Therefore, the request data handler performs a string-to-business-object conversion on the request, converting the serialized data to a request business object. This serialized data is in the request format, which is the format that the access client or the connector's application generates as output.
The Request-Response data handler determines which data handler to invoke as its request data handler based on the RequestDataHandlerMimeType property in the child meta-object. The RequestDataHandlerMimeType property contains the MIME type that the request data handler supports. If RequestDataHandlerMimeType has not been initialized, the Request-Response data handler logs an error and generates an exception. Therefore, you must initiauses the RequestDataHandlerMimeType property.