Implementing a Post-Processing Class with Callback

Use

You design and implement a post-processing class to handle information retrieved from scheduled processes once they have been initiated.

initiatedProcess() IGPScheduledInitiationPostProcessingInterface

Apart from that, the class implementation is custom and must be tailored to your application requirements. For example, once you have retrieved process details, you can map them to your own objects or process them in an application-specific way.

Prerequisites

To be able to use the post-processing class, you must have:

• Specified the name of the post-processing class during the creation of the process schedule at design time.

  See: Scheduling Process Initiation Using the GP API

• Deployed the post-processing class on the server before you can use it at runtime.

Procedure

1. Create a post-processing class and implement the

   IGPScheduledInitiationPostProcessingInterface

   interface.
2. Implement the

   initiatedProcess()

   method.

   Retrieve the process initiation context and perform all relevant operations or mappings.

3. Implement the custom methods required for your application logic.

   These are methods that you call from your application to retrieve information after it has been processed by the post-processing class.

Example

In the example, the initiated process is designed to send notifications if they are due.

The callback method of the post-processing class retrieves the initiation context of the process once it has been started. It also sets a notification flag to indicate that a notification was sent out.

isNotificationSentOut()

packagecom.sap.test.caf.test.eu.gp.api.schedinst.postproc;

importjava.util.Locale;

importjavax.naming.InitialContext;

importjavax.naming.NamingException;

importcom.sap.caf.eu.gp.model.svc.IGPService;

importcom.sap.caf.eu.gp.scheduling.api.IGPInitiationContext;

importcom.sap.caf.eu.gp.scheduling.api.IGPScheduledInitiationPostProcessingInterface;

publicclassScheduledInitiationCallbackimplementsIGPScheduledInitiationPostProcessingInterface {

  // notification sent flag

  publicstaticbooleannotificationSentOut =false;

  // implement the initiatedProcess() method

  publicvoidinitiatedProcess(IGPInitiationContext initiationcontext) {    

      IGPService gpService =null;

     try{

        // get initial process context

         InitialContext ctxt =newInitialContext();

         gpService = (IGPService) ctxt.lookup( IGPService.JNDI_REGISTRY_NAME );

      }catch(NamingException e) {

      }

     // indicate that notification is sent out

      notificationSentOut =true;     

   }

   // a custom method that checks if notification is sent out

  publicstaticbooleanisNotificationSentOut() {

     returnnotificationSentOut;

   }

}

isNotificationSentOut()

importcom.sap.test.caf.test.eu.gp.api.schedinst.postproc.ScheduledInitiationCallback;

// check if notification is sent or not

booleansentOut = ScheduledInitiationCallback.isNotificationSentOut();