This topic applies only to the IBM Business Automation Workflow Advanced configuration.

Invocation Style property for one way operations

The Invocation Style property of the Service Invoke mediation primitive or the Callout node determines the invocation style that is used to invoke a service

Within Integration Designer for a one way operation using a Callout node or Service Invoke mediation primitive, the options for the invocation style property on the Details page are:
  • As target
  • Sync
  • Async one way

As target

The As target invocation style takes account of the Preferred Interaction Style that is specified on the target component, or import that is invoked by the mediation flow.

When the mediation flow component is invoked as Sync, it is not possible to asynchronously return a response to its caller. As a result, the mediation flow uses Sync invocation style when it is invoked Sync, even if the Preferred Interaction Style of the target is set to Async.

Table 1. Invocation style used by the mediation flow component for Default invocations
Property How the mediation flow component is called Preferred interaction style of the target Invocation style
As target Sync Sync Sync
Async one way Async or Any Async one way
Async with deferred response
Async with callback

Sync

The Callout node or Service Invoke mediation primitive invokes the service using the synchronous invocation style (Synchronous invocation).

Async one way

The Callout node or Service Invoke mediation primitive invokes the service using the asynchronous invocation style. The processing by the invoked service is separate from further processing by the mediation flow (Asynchronous invocation).

Compatibility

The invocation style used for a one-way operation is unchanged in the current release. For more information, see One way operation.