Dynamic Split Join:Parallel flow using OSB

Hi,
I am implementing a dynamic split join in OSB,where in the for -loop i am invoking a database adapter.
If I select parallel='yes' in the for-loop settings, I get a random number of records from the database as an output.
While on the other hand, on running the for-loop sequentially, i get the exact number of records i am expecting.
Could anybody figure out why is this happening?
Regards,
Tarun

If I understand correctly, this is what you are doing:
Configure a For loop based on a repeating element in source XML (for ex. for each customer id in xml message).
Inside each loop you are making a DB lookup and getting one record for each element (for ex. customer details of each customer id)
Finally you are aggregating them in the same variable (join)
The problem that you see is that if you do it in parallel then you do not see details of all customers in the out variable?
If yes, then can you please let me know how you are updating the details of each record in the out variable.

Similar Messages

Parallel flow using same Partnerlink

Hi all,
This is what i'm trying to do: i have a process that splits up in two parallel processes which are EXACTLY the same (only input differs very slightly). Later on these processes converge again to one.
So, I decided to build a process A that calls upon process B twice, using flow to have it in parallel. I realized I had to do something about getting the receive right. The thing to use looks to be the Correlation Set. However, Correlation set documentation is very meagre. I can't seem to understand the working of the 109.CorrelationSets example, as it looks to use a double correlation (?). It just confuses me.
I really need some help here, and would appreciate a very simple working example.
What I really need to know is:
- what steps to take (BPELDEV guide isn't enough help)
- where to place correlation (on invoke or receive in process A ?, on receive or reply in process B?)
- how to set the correlation value, or is it always derived on the basis of the "query" in the bpws:PropertyAlias?
Thanks in advance!

Hi,
This is probably related to the fact that you cannot have two concurrently enabled activities with the same partner link, operation, and correlation set (this constraint can be found in the BPEL spec.) The correlation sets won't help you here because correlation sets are there to do instance routing (i.e. route an inbound message to the right process instance) but the problem here is not to route to the right process instance, but to route to the appropriate "receive" action... If there are two competing receive actions, the engine just go nuts, and this is why the above constraint was introduced in the BPEL spec.
One way to go around (assuming that the interaction between A and B is based on asynchronous send/receive), is to first send the two messages in a flow, and then wait for the response with a single receive (rather than two separate receive actions). Something like this:
<sequence>
<flow>
<invoke (send asynchronous message to B), no output variable here!>
<invoke (send asychrnous message to B), again, no output variable here!>
</flow>
set variable counter to 1
<while counter <= 2>
<receive one message from B>
increment variable counter by 1
</while>
</sequence>
With a colleague, we have written a more complicated version of this scenario, where we effectively can receive messages through the same partner link not from 2 process instances, but from any arbitrary number of process instances. See http://www.serviceinteraction.com and download the code sample for "one-to-many send/receive with dynamically determined partners".
I can send you the full Oracle BPEL project for this example if you think it would help. But I think that with the above information you should be able to proceed.
Regards
Marlon Dumas (m . dumas @ qut . edu . au)

OSB Parallel Processing using OSB

Hi All,
I am working on a proxy service based on WSDL-A.
Stage-1
I have to do a service callout (sc1) to another business service with a particular parameter.
From the response of that sc1 i need to pick two variables var1 and var2 and use it the request of stage2 and stage 3.
Stage- 2
I have to do another service callout (sc2) to the same business service with a particular parameters including var1 returned by sc1
Stage- 3
I have to do another service callout (sc3) to the same business service with a particular parameters including var2 returned by sc1
Stage-4
I need to Use the response of sc1, sc2 and sc3 and transform that to the desired response.
My only concern is I have to wait for stage 2 to complete to start with stage 3 when I have no real dependency on stage 2.
How can I ensure that My stage 2 and stage 3 can be processed in parallel. ?
Can any one please explain How I can achieve that?

Hi Edwin,
I was trying the example on your blog I am getting this issue that I am not sure how you initialize the response.
It always gives me an exception that the response is used before its is initialised.
If possible can you send me the configuration jar on my email [email protected] ?
Cheers Nitin

Calling two Business service using split join in osb

Hi,
While trying to call two business service using Split Join in osb i am getting selection failure message in Bpel em console. i am using invoke activity to invoke the BS and assign to assign the input. in the assign i am assigning *$request.payload/input* to input.payload . In the em console i am getting input like this
receiveInput
Jun 19, 2012 5:05:45 PM Received "process" call from partner "bpelprocess1_client"
<payload>
<inputVariable>
<part name="payload">
<client:process>xxxxx</client:process>
</part>
</inputVariable>
Assign (pending)
Jun 19, 2012 5:05:48 PM Error in evaluate <from> expression at line "65". The result is empty for the XPath expression : "/client:process/client:input".
<payload>
<client:process>xxxxxx</client:process>
Jun 19, 2012 5:05:48 PM The following exception occurred while attempting to execute operation copy at line 63
<payload>
<bpelFault>
<faultType>0</faultType>
<selectionFailure/>
</bpelFault>
Jun 19, 2012 5:05:57 PM "BPELFault" has not been caught by a catch block.
Jun 19, 2012 5:06:00 PM The transaction was rolled back. The work performed for bpel instance "650002" was rolled back, but the audit trail has been saved for this instance.If this is a sync request, please resubmit the request from the client. If it is an async request, please recover from the recovery console by resubmitting the invoke message.
Can anyone help on this?
Thanks in Advance...

maybe this one helps a bit, it's the same pattern
http://www.xenta.nl/blog/2011/07/03/oracle-service-bus-implementing-aggregator-pattern-by-use-of-split-join/
if you're using a dynamic split join easiest way is to do something like
assing <yourresponse/> to $response
at this moment your assign an empty placeholder to the response variable
now you go into the for-each looping and for each iteration you need to insert the response of your bpel call in the $response variable
so in the looping as last step you add something like
insert $mybpelresponse/rootelement into $response/yourresponse
with the insert it will insert the reponse 1..x times into the $response variable (so actually aggregating all the responses for you)

OSB SPLIT JOin How to verify it is working parallel

HI ,
I am using Oracle service Bus 11.1.1.3 and I have following Requirement
PS 1 : Receives the request ,validates the input and calls proxyservice 2 (using publish action )
PS 2[Sb ] :Receives the req from Proxyservice 1 queries a DB using the DB Dapater and obtains a list of subscribers for the request .
Each item of the list contains information about the subscriber metadata(data format,JMS endpoint) .For Each Subscriber calls Proxyservice 3 which the subscriber meta data info and the actual request received .
PS 3 [SB ]: Receievs the subscriber meta data and the actual request XML .depending upon the format specified in the meta data for the subscriber performs transformation(using xquery) and post the transformed xml to the subscriber specific queue [JMS ].
Proxyservice 3 is common for all subscriber depending upon the metadata different Xquery needs to be called for different subscriber [this is achieved using Dynamic xquery ].
My requirement is i need to call Proxyservice 3 in parallel for all subscriber .
OSB doesnot out of the box provide action for spanning multiple threads of a PS from another PS .
I have tried using Split join .Have created a Split Join which will loop through the list of Subscribers returned in PS2 and call PS3 for Each loop (have specified paralle =yes in split join ).
How do I confirm that PS3 is called in parallel for all the subscribers .
Is there any other way I could implement this requirement of spanning multiple threads ?
Thanks a regards ,
Yamini

HI Abhinav ,
Thanks a lot for the help .I had tried with adding log actions at various places.
Added a log action as the first action of the for loop (split join )
Start of PS3 and End of PS3 ..
Please find some of teh readings .
Reading 1
for loop ******************************: 2011-09-01T16:24:12.825+01:00
for loop ******************************: 2011-09-01T16:24:12.965+01:00
for loop ******************************: 2011-09-01T16:24:12.965+01:00
for loop ******************************: 2011-09-01T16:24:13.137+01:00
progate Input Time Stamp ::::: 2011-09-01T16:24:12.965+01:00 ODM
Progate Input Time Stamp ::::: 2011-09-01T16:24:13.028+01:00 oye
Progate Input Time Stamp ::::: 2011-09-01T16:24:13.121+01:00 hade
Progate Input Time Stamp ::::: 2011-09-01T16:24:13.199+01:00 PAM
JMSSSSS Posting: 2011-09-01T16:24:13.043+01:00 odm
JMSSSSS Posting: 2011-09-01T16:24:13.043+01:00 oye
JMSSSSS Posting: 2011-09-01T16:24:13.137+01:00 hades
JMSSSSS Posting: 2011-09-01T16:24:13.199+01:00 PAM
Reading 2:
Calling the SplitJoin: 2011-08-31T17:54:20.914+01:00
ending the SplitJoin: 2011-08-31T17:54:20.929+01:00
THE COUNT ******************************: 2011-08-31T17:54:21.662+01:00
THE COUNT ******************************: 2011-08-31T17:54:22.021+01:00
Prooooooogate Input Time Stamp ::::: 2011-08-31T17:54:23.254+01:00 odm
Prooooooogate Input Time Stamp ::::: 2011-08-31T17:54:23.269+01:00 pam
JMSSSSS Posting: 2011-08-31T17:54:23.285+01:00 odm
JMSSSSS Posting: 2011-08-31T17:54:23.363+01:00 pam
As far as my analysis goes PS3 is executed in parallel but it is not instantaited at one go (all threads in parallel ) .
I am not able to conclude the level of parallelism achieved using Split join ..
Do let me know if I am missing anything
Yamini

How to set SOAP Header When Calling Business Service (OSB) Using Split-Join

Hi,
We need to call WSDL based webservice which requires heading static content for successful call. As we need to call the same service parallely, hence we want to use Split-Join.
Looked at couple of forum links, noted that we can't play with headers while working with Split-Join.
For curiosity, just want to check any option other than using proxy as mediator in setting header information.
Regards
Venkata Madhu

Venkata,
You still have the option, if you hv n't tried this one.
To enable this capability, you must declare the header parts along with the body parts in a single request/response message in the Split-Join WSDL and in the WSDL of the proxy or business services invoked by the Split-Join. With the message parts declared in the WSDLs, SOAP header content is available to Split-Joins in the request/response message variables.
Following is an example of the message and binding definitions in the WSDL.
Message
<wsdl:message name="retrieveCustomerOverviewByIdRequestMessage">
<wsdl:part name="retrieveCustomerOverviewByIdRequest"
element="co:retrieveCustomerOverviewByIdRequest"/>
*<wsdl:part name="serviceContext" element="sc:serviceContext"/>*
</wsdl:message>
Binding
<wsdl:input>
<soap:body use="literal" parts="retrieveCustomerOverviewByIdRequest"/>
*<soap:header message="tns:retrieveCustomerOverviewByIdRequestMessage"part="serviceContext" use="literal"/>*
</wsdl:input>
hope it helps !!
Regards,
Abhinav

Split joins in OSB

Hi,
Actually i do have a requirement where i need to call 2 business services simultaneously(in parallel) in OSB(Like using Flow activity in SOA) using split joins. Is it possible to call 2 business services parallely in OSB?
Can any one please help me out with any blogs or steps that i can follow to achieve this.
Your help is appreciated.
Thanks,
Naveen

That is not entirely true. Split Join itself is based on single operation, i.e. the input to split join will be a single message, but within the split join you can invoke multiple services in parallel. You can either dynamically decide the number of parallel flows at runtime (similar to FlowN) or you can have static number of parallel calls (like Flow activity of BPEL) within split join.
In case you want to call two business services in parallel, create a WSDL(if needed, in most cases you can reuse the WSDL of the Proxy Service itself for SplitJoin as well unless you are doing enrichment within Proxy before calling business services) for split join which has request message which contains data for both business services. Within the split join you can configure calls to both business services in parallel and you can also add transformations for each business services in respective branches.
You can than aggregate the response from both services if needed and return that as a response of split join.
Here is an example of Static Split Join:
http://www.xenta.nl/blog/2011/07/03/oracle-service-bus-implementing-aggregator-pattern-by-use-of-split-join/

Aggregating output of two BS in OSB Split join

Hi,
i am using split join to invoke two BS and after the each invoke activity in parallel branch i have placed assign activity and assigning output variable of in voke to reply activity output variable response.parameter . However in o/p i am getting response of only one BS. can any one help on how to aggregating output of two BS in OSB Split join . my output is coming like this
<soap-env:Envelope xmlns:soap-env="http://schemas.xmlsoap.org/soap/envelope/">
<soap-env:Body>
<ns2:NewOperationResponse xmlns:ns2="http://www.example.org/SjWsdl/">output</ns2:NewOperationResponse> -------->this is o/p of one BS. But i want to display O/p of two BS
</soap-env:Body>
</soap-env:Envelope>
thanks in advance..
Edited by: 11207106008 on Jun 26, 2012 10:11 PM
Edited by: 11207106008 on Jun 26, 2012 10:12 PM
Edited by: 11207106008 on Jun 26, 2012 10:13 PM

Suppose you saves the response of each BS in variables: $response1 and $response2
then you need to configure the replace action after the parallel branch like this:
Replace node content of . in variable <variable name of reply variable> with <Expression>
Where you can provide in <Expression> a simple XQuery expression to combine the two variable contents. (Choose a root node of your choice, I have used AggregatedResponse)
<AggregatedResponse>
{$response1, $response2}
</AggregatedResponse>

OSB Split Join Repeat Until Question On XPath Condition

I'm trying to use OSB File Transport to stream a very large XML document file into a service which will split the file into very many small XML documents. So, given a file like:
<BookStore>
<Book></Book>
<Book></Book>
... (many more books)
</BookStore>
In the split join I want to use a 'repeat until' to process each Book until there are no more Books in the BookStore. Here's my question: What is the correct XPath expression to use as the Repeat Until terminating condition? (I'm an XPath novice.)
Thanks for your help!!!

Hi,
Based on what I understood, you should be using a for each loop with the conditions as follows:
Within the Split Join flow
for each ( counter variable from 1 to Count (xpath of book) ) --> For my example it was count($request.parameter/sjpoc:Orders/sjpoc:Order) replace this with your xpath.
- do your logic
Snapshot just in case @ http://dl.dropbox.com/u/19901533/sj_foreach_snapshot.JPG
Based on this the split and join would happen for n (based on count) number of Book tags.
Let me know if my understanding is incorrect.
Thanks,
Patrick

Oracle Service Bus 10.3 - Invoke a REST service in split join flow

Hi
I am using WebLogic Workshop to design a split-join service that needs to call 2 services and combine their responses.
Service A - WSDL based service
Service B - REST service
In the split join flow I am able to invoke Service A just fine. However I do not have a way to call Service B. When I open the invoke dialog it only list WSDL based services.
Does this mean in a split join I can only invoke WSDL based services or is this a bug in Weblogic Workshop.
I can get around this by creating a WSDL based proxy that calls the REST service but was hoping I do not have to go down this route.
Any guidance is appreciated.
Thanks,
-Nilay

I think that Split-Joins are implemented in BPEL. Just look at your .flow file and you will see all those BPEL directives. That's why you probably need your service to be described by WSDL, so you are probably on the right way.
http://technology.amis.nl/blog/1273/invoking-http-services-from-oracle-bpel-pm-soa-enabling-php-servlets-rss

Split-Join, unable to set SOAP:HEADER in OSB at Invoke Service Component.

Hi Experts,
i created a Split-join for parallel processing and invoke third party services, but this service requires some mandatory elements in soap:header like WS-Addressing and, WSA-TO and some security infomation, but i don't know how to pass header in invoke service step. Please help me to setup Header for Invoke services in split join.
Please help me to resolve this issue.
Thanks
Ankit

see this :https://forums.oracle.com/thread/951618
not the most fancy way, but you can create some sort of wrapper proxyservice in front of your business service to make it work

For each sample example in OSB without Split join

Hi,
Any body have sample example for For each in OSB without Split join......Thanks in advance

I know this is an old thread, but I just ran into this same problem. Wow! That's a crappy 'feature'. I wasted 4 hours this morning on this thinking it was me doing something wrong in my xpath, but nope, you need to cast the counter to an int .......
I hope they fix things like this in the next major release.
Thanks for the solution.

How to use parallel flowed subforms begining at the same position.

How to use parallel flowed subforms begining at the same position in my form.
Ex
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DropDownList1
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I would like to repeat with a button the 3 subforms in parallel
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OSB Split-Join problem

I am a bit confused as to how to design a split-join via Oracle workshop for weblogic
I have imported a WSDL and can define how to decode my incoming request so that I can issue multuple service requests via a Parallel node
When I try to configure the Invoke Service node - I can't sem to reference anything other than the WSDL I started with ???
I thought I was supposed to be able to access any other Business (or Proxy) service (or even another Split-Join)
Don't know if this is clear enough for anyone to be able to help

When you configure Invoke Service you can choose any WSDL-based business or proxy service operation. Under Input Variable and Output Variable tabs you set message variables of appropriate types.

Error in Split-Join when invoke similliar B.Service with same namespace

Hi Guys,
I having a split-join that doing parallel spliting call out to business service. And i encounter this error.
Severity and Description Path Resource Location Creation Time Id
Error compiling the Schema Type System: error: sch-props-correct.2: Duplicate global type: GetabcParam@http://www.xx.xx.abc (Original global type found in file: null) SplitJoin.flow line 1 1265267604208 5245
Can I know is this a limitation of the OSB or is a Bug? Or there is a more better way to implement this?
Edited by: kpchong on Feb 4, 2010 7:51 AM

I'm not sure if this is a known limitation or a bug. I faced this issue once, but needed quick fix so I didn't contact Oracle support at all.
I remember that the problem emerged in case I had a SplitJoin with Parallel action and both branches used WSDL-based business services whose WSDL files imported the same (shared) XSD file. As I wrote before I needed quick fix, so I ended with re-adjusted namespaces just to overcome this issue. Ugly but effective.

Dynamic Split Join:Parallel flow using OSB

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