Calling java method in BPEL assign step

[rskarthikeyan]

I need your valuable support for the below issues. Kindly provide any possible solution

My queries :

  We have used JCAPS and developed bpel2.0 processes.Now we need to convert those into JBoss bpel using this JBDStudio.

I am facing below  issues while converting,

1. ) We Used the xmlns:sxxf=http://www.sun.com/wsbpel/2.0/process/executable/SUNExtension/XPathFunctions reff imported in my bpel:process and we called the below functions in my copy assign

   <bpel:copy>

<bpel:from> sxxf:current-dateTime()</bpel:from>

            <bpel:to part="payload" variable="output">

<bpel:query queryLanguage="urn:oasis:names:tc:wsbpel:2.0:sublang:xpath1.0"><![CDATA[tns:result]]></bpel:query>

</bpel:to>

</bpel:copy>

But in JBDStudio I am getting the Unknown function "sxxf:current-dateTime" used in <bpel:from>

1. ) I have a java class as a jar and placed in the D:\Jboss\jboss-soa-p-5\jboss-as\server\default\lib in my server location.

Now I am trying to call the one method which is there in the java class like below,

<bpel:copy xmlns:addQuery="java://com.emdeon.poc.java.TstEmpJavaClass">

<bpel:from>addQuery:display()</bpel:from>

            <bpel:to part="payload" variable="output">

<bpel:query queryLanguage="urn:oasis:names:tc:wsbpel:2.0:sublang:xpath1.0"><![CDATA[tns:result]]></bpel:query>

</bpel:to>

</bpel:copy>

Same error I am getting in design time. While run time I am getting error below,

17:10:31,583 INFO  [ASSIGN] Assignment Fault: {http://docs.oasis-open.org/wsbpel/2.0/process/executable}selectionFailure,lineNo=78,faultExplanation=An exception occured while evaluating "{OXPath10Expression addQuery:display()}": No Such Function display

But the above two things are working well in the JCAPS and glassfish server.

Please provide the possible solutions , how can I achieve in the JBoss riftsaw. I am using JBoss SOA 5 platform as server.

[jeff.yuchang]

Hi,

For the 1st question, this thread (http://mail-archives.apache.org/mod_mbox/ode-user/201008.mbox/[e-mail]%3Euser/201008.mbox/[e-mail]%3E) might be of your interest.

In terms of invoking a java class from RiftSaw, I don't think it is doable right now. Why not expose that java class as JAX-WS web service, and then invoke it via web service way.

Hope It Helps.

Jeff

[jeff.yuchang]

Just to let you know, the above two (your original version) are the SUNExtension, so it is not in the BPEL 2.0 spec. Therefore, they are vendor specific.

Regards

Jeff

[rskarthikeyan]

Thanks Jeff.

So suppose if i use my custion class and invoking any method inside the class how should i need to do? Where should place my classes in server path location?

Whethere should need make it as a java class jar or in any other way?

We can expose the java class as a webservice, but as per my requirent i can use only java code only.Once its working than i will update the same to my peers.

Kindly help me.

Regards,

karthick

[rskarthikeyan]

Again Thanks Jeff,

Your correct thats SUNExtension only.So where can i find the same functionality in Apache ODE or in RiftSaw.

Kindly provide the extension.

Regards,

Karthick

[jeff.yuchang]

Hi Karthick,

This link might be of your interest.. http://www.intalio.org/confluence/display/PXE/Custom+XPath+Functions

You also can look up the thread on the ode user mailing list: such as: http://mail-archives.apache.org/mod_mbox/ode-user/201202.mbox/browser

Regards

Jeff

[rskarthikeyan]

Hi Jeff,

Thanks for your support.

I have used the same but when invoke the service using SOAP UI Tool i am getting the below error message,

12:07:53,185 INFO  [STDOUT] Retrieving document at 'file:/D:/Jboss/jboss-soa-p-5/jboss-as/server/default/deploy/EMP_Java_Process-20120227120745.jar/empjavaprocessArtifacts.wsdl'.

12:07:53,340 INFO  [WatchDog] [Endpoint files for {DeploymentUnit EMP_Java_Process-20120227120745}] updated

12:07:55,336 INFO  [ASSIGN] Assignment Fault: {http://docs.oasis-open.org/wsbpel/2.0/process/executable}selectionFailure,lineNo=78,faultExplanation=An exception occured while evaluating "{OXPath10Expression ext:display()}": Error while executing an XPath expression: net.sf.saxon.trans.XPathException: XPath syntax error at char 13 in {ext:display()}:

    Cannot find a matching 0-argument function named {java:com.example.xpath.Random}display()

My Java Class is

public class TstEmpJavaClass {

          public static void display(){

                    System.out.println("This is Process");

          }

          public static void main(String arg[]){

          }

}

I have created jar and placed in the following location - D:\Jboss\jboss-soa-p-5\jboss-as\server\default\lib

My process step code is below,

<bpel:sequence name="main">

        <!-- Receive input from requester.

             Note: This maps to operation defined in empjavaprocess.wsdl

             -->

        <bpel:receive name="receiveInput" partnerLink="client"

                 portType="tns:empjavaprocess"

                 operation="process" variable="input"

                 createInstance="yes"/>

        <!-- Generate reply to synchronous request -->

        <bpel:assign validate="no" name="assign">

            <bpel:copy xmlns:ext="java:com.example.xpath.Random">

                <bpel:from expressionLanguage="urn:oasis:names:tc:wsbpel:2.0:sublang:xpath2.0">ext:display()</bpel:from>              

                <bpel:to variable="myVar">

                    <bpel:query queryLanguage="urn:oasis:names:tc:wsbpel:2.0:sublang:xpath1.0"><![CDATA[tns:input]]></bpel:query>

                </bpel:to>

            </bpel:copy>

        </bpel:assign>

        <bpel:reply name="replyOutput"

               partnerLink="client"

               portType="tns:empjavaprocess"

               operation="process"

               variable="output"

               />

    </bpel:sequence>

Regards,

Karthick.