5.1.2. Responsibility Assignment of the Application¶

This section describes the classes to be implemented and their responsibilities when creating MOM messaging.

Classes and their responsibilities

Action class

The action class executes the business logic based on the request message (RequestMessage) read by the data reader (FwHeaderReader / MessageReader) and returns the response message (ResponseMessage).

For example, the following processing is performed as business logic when capturing a request message.

• Creates a form class from the request message and performs validation.
• Creates an entity class from the form class and adds data to database.
• Creates and returns a response message.

Tip

Asynchronous response messaging differs in the following points.

• Asynchronous response messaging is not validated because the purpose is to capture data and the business logic is performed by the subsequent batch.
• Since asynchronous response messaging does not return a message, Success is returned as the processing result.

Form class

Class which maps the request message (RequestMessage) read by the data reader (FwHeaderReader / MessageReader).

Has the configuration of annotation for validation of the request message and logic for correlation validation.

All the form class properties are defined by a String.

See Bean Validation for the reason why the property must be a String . However, in the case of a binary item, it is defined by a byte array.

Entity class

A class with a one-to-one correspondence with a table. Has the property corresponding to columns.