Hi Anne, To assign arrays you should copy their root element instead of each element individually. So you would use some sort of container element and assign it as a whole.
Now if you really need to copy each of these elements one by one, you will have to rely on XSL. And that's actually a much better alternative for complex data structures manipulations. So you should use the bpws:doXslTransform BPEL function and use simple XSL stylesheets. Cheers, Matthieu On 2/9/07, Anne Noseda <[EMAIL PROTECTED]> wrote:
Hi, I would like to manipulate array dynamically in my BPEL process. I have tryed the following syntax : I have a while loop and a variable counter initialized to 1 and incremented at each loop. In this loop, I make the following assignment : <bpws:copy> <bpws:from xmlns:etnic="http://services.etnic.be ">$responseEtab.parameters</bpws:from> <bpws:to xmlns:etnic="http://services.etnic.be ">$responsesEtab/items[$counter]</bpws:to> </bpws:copy> At execution time, I receive this error : FATAL - ASSIGN - Unexpected exception in assignment, terminating process java.lang.IllegalStateException: LValue must not have more than one variable reference at org.apache.ode.bpel.elang.xpath10.o.OXPath10Expression.getVariable( OXPath10Expression.java:171) at org.apache.ode.bpel.o.OAssign$LValueExpression.getVariable(OAssign.java :117) at org.apache.ode.bpel.runtime.ASSIGN.evalLValue(ASSIGN.java:112) at org.apache.ode.bpel.runtime.ASSIGN.copy(ASSIGN.java:357) at org.apache.ode.bpel.runtime.ASSIGN.run(ASSIGN.java:78) at sun.reflect.GeneratedMethodAccessor19.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke( DelegatingMethodAccessorImpl.java :25) at java.lang.reflect.Method.invoke(Method.java:585) at org.apache.ode.jacob.vpu.JacobVPU$JacobThreadImpl.run(JacobVPU.java:451) at org.apache.ode.jacob.vpu.JacobVPU.execute (JacobVPU.java:139) at org.apache.ode.bpel.engine.BpelRuntimeContextImpl.execute( BpelRuntimeContextImpl.java:731) at org.apache.ode.bpel.engine.BpelProcess.handleWorkEvent(BpelProcess.java :703) at org.apache.ode.bpel.engine.BpelEngineImpl.onScheduledJob( BpelEngineImpl.java:267) at org.apache.ode.bpel.scheduler.quartz.QuartzSchedulerImpl.doExecute (QuartzSchedulerImpl.java:295) at org.apache.ode.bpel.scheduler.quartz.QuartzSchedulerImpl.execute( QuartzSchedulerImpl.java:301) at org.apache.ode.bpel.scheduler.quartz.JobImpl.execute(JobImpl.java:32) at org.quartz.core.JobRunShell.run(JobRunShell.java:195) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask( ThreadPoolExecutor.java :650) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java :675) at java.lang.Thread.run(Thread.java:595) So, my question, how to manipulate dynamically arrays without having two variables in the left expression of the assignment ? And my second question more "philosophical" : is this the good way ? Is a BPEL process able to manipulate arrays or must I invoke external partners for all "complex" manipulations ? Or is there an other way to handle my problem ? With xsl or other things ? I think that BPEL code becomes to much complex when the process logic involves a lot of variables' manipulations. Thanks in advance, Anne. -- View this message in context: http://www.nabble.com/BPEL---array-manipulation-tf3198998.html#a8881712 Sent from the Apache Ode User mailing list archive at Nabble.com.
