Handler Types and Messaging Types

The availability of each handler type depends on the type of service operation you are using. The following tables list the message types used for each service operation type and the handler types available for use.

Table 1: Handler Types and Messaging Types

Service Operation Type	On Notify Handler Type	On Pre-Notify Handler Type	On Post-Notify Handler Type	On Receive Handler Type
Asynchronous one-way	Request message	Request message	Request message	Request message
Asynchronous request / response	Request message	NA	NA	Request message
Asynchronous to synchronous	Request message	NA	NA	NA
Synchronous	NA	NA	NA	NA

Table 2: Handler Types and Messaging Types (cont.)

Service Operation Type	On Request Handler Type	On Response Handler Type	On Route Handler Type	On Send Handler Type
Asynchronous one-way	NA	NA	Request message	Request message
Asynchronous request / response	NA	Response message	*Request message *Response message	Request message
Asynchronous to synchronous	Request message	Response message	*Request message *Response message	Request message
Synchronous	Request message	NA	Request message	Request message

Note:

For On Route with On Send, the message structure is a request message. For On Route with On Receive, the message structure is a response message.

The On Response handler type is used to identify the type of On Notify event to be fired. For example, assume there are four On Notify handlers that are to be fired—three are general On Notify events, that is, the message is processed as part of the request, and the fourth is a response to the original asynchronous request. The fourth one is specified with a handler type of On Response, and the application class selected is the base class OnNotify.

Table 3: Handler Types and Messaging Types (REST service operations).

REST Provider HTTP Method	On Request Handler Type	On Response Handler Type	On Route Handler Type	On Send Handler Type
Delete	NA	NA	NA	NA
Get	NA	NA	NA	NA
Head	NA	NA	NA	NA
Patch	Request message	NA	NA	NA
Post	Request message	NA	NA	NA
Put	Request message	NA	NA	NA

There are no handlers for REST consumer service operations. You may add connector properties to consumer service operations on the routing definition using the Routings-Connector Properties page or add them dynamically by using PeopleCode.

See Defining and Overriding Gateway and Connector PropertiesUsing PeopleCode to Manage REST Service Operations.