How does the business event subscription wizard work?
This wizard parses the WSDL that you are attaching in subscription and then prompts you through a series of questions to select the Method that must be called from Web Service.
How does the webservice get invoked?
The Java WSIF [Web Service Invocation Framework] is used to invoke the desired web service dynamically.
What is WSIF?
Usually, when you wish to invoke a method within the Web Service WSDL, you generate the stubs which act like a "local proxy" for the web service. Using WSIF, the Webservice can be dynamically be geneated. The Business Event Subscription in this case invokes a class named oracle.apps.fnd.wf.bes.WebServiceInvokerSubscription. This class internally reads the definition of the subscription and invokes the Web Service.
What if I want to do additional processing before/after Web Service Invocation via Business Event?
When the business event subscription for Web Service fires, then WebServiceInvokerSubscription.onBusinessEvent() is executed. To do further processing, follow the steps below
1. Extend class WebServiceInvokerSubscription
2. Override methods onBusinessEvent(),preInvokeService(), invokeService()and postInvokeService() as required
3. Place the java class name of extended class in field "Java Rule Function" in Business Event Subscription
Click here to see the video demo of attaching webservice to Business Event Subscription via wizard
How do I process the response of the webervice?
There are two options for you.
Option 1. Use extended class based on WebServiceInvokerSubscription and override the methods to trap the response and process it.
Option 2. Attach the following parameters to the business event subscription
WFBES_CALLBACK_EVENT
WFBES_CALLBACK_AGENT
These parameters dictate the name of the business event that will be raised in response to the WebService return message.
Click here to see the video demo of processing response of WebService
One note- I haven't tested this functionality all the way yet. My initial tests indicate that this feature is not 100% production ready yet because some of the legitimate webservices are not getting parsed by WSDL Subscription wizard. The webservice example used in this article is the same as that in Metalink Note 741783.1. However the Metalink note uses the pre-R12.1 technique where wizard was not present.
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Comments
In this example you are triggering a business event to call a webservice -- cool.
Can you expose a business event as a webservice -- so that I can invoke the webservice from an external system?
You can include any business event or interface as endpoints in Integration Respository.
us ing the SOA Gateway of R12.1, you can generate webservices for these integration points in Integration Repository.
Aga in using SOA Gateway of R12.1, you can deploy the webservices to the Application Server.
You can use Integration Repository to expose the following as webservices
PL/ SQL APIs
XML Gateway
Concurr ent Programs
Busine ss Events
Open Interface Tables/Views
ED I
Business Service Object (Service Beans)
Composit e Services
Thank s,
Anil Passi
Again a good article from you.
is this feature comes with R12.1 or do we need to go for any other integration?
a nd how can we call a web service method.
Thanks - Suresh
This feature comes out of the box in R12.1
When the Business Event Subscription wizard parses the WSDL, it presents you with the list of available methods within the web service. You can see the video demo that explains this step.
Thanks
A nil Passi
I had a question regarding the note at bottom of article
One note- I haven't tested this functionality all the way yet. My initial tests indicate that this feature is not 100% production ready yet because some of the legitimate webservices are not getting parsed by WSDL Subscription wizard. The webservice example used in this article is the same as that in Metalink Note 741783.1. However the Metalink note uses the pre-R12.1 technique where wizard was not present.
Can you let me know what are these "legitimate webservices are not getting parsed by WSDL Subscription wizard" which are being referred here? The WSDL parser ensures that all external WSDL files outside the firewall get parsed if proper proxy setup is done. Have you come across any WSDLs which have failed doing so....?
Also would like to mentio that the WSDL Subscription wizard is just a wrapper around the pre-R12.1 technique which has been mentioned in the note. Internally it stores the WSDL properties in the same set of subscription parameters as mentioned in the note even now.
Thanks
Su bhankar
Is this functionality not available in 11i?
If not, is there any doc on enabling webservices on 11i?
Regards,
Femi
We don't have any plans yet to migrate to R12 and we need to create/changes all existing interfaces to SOA standards..
th at'll be very helpful.
Thank s,
Fernando.
Is there any java api's to get all integration repository.
tha nk u in advance.
Kiran
Can you tell me how to test and Invoke this Business Event
Could you please help me with a demo on how to test a subscription which invokes a Web Service.
Also, how can we handle the parameters for the WebService?
Ma ny Thanks,
Raka
How can I debug it?
It seems that my web service call never gets response from the other side.
Thanks
I have created the business event for a secure webservice. But what shoud be my subscription parameters. And how can I use event.setData() , event.setString Property() to set the payload for webservice. plz explain briefly with sample code example
Thanks
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