This method is called before the service is invoked in change mode.
Input
RequestContext
- Contains session parameters, such as language cd, user id,
and so on.Input/Output
PageBody
- This object contains the information that is to be submitted to
the underlying service.Return value
PageBody
or null
- If a page body is returned, this is
considered the result of the invocation and the underlying service will not be called.
If null is returned, the underlying service will be invoked normally.
Throws
InteceptorError
- Throw this exception when an error occurs.
InterceptorWarning
- Throw this exception to signal an application
warning.