Hello everybody.
I'm trying to iterate over a sequence (which came from a third-party
partner response message), filling the output of a process I'm writing.
here is my forEach loop definition :
<bpws:forEach
counterName="Counter"
name="IterateOverResults"
parallel="no">
<bpws:startCounterValue>
<![CDATA[1]]>
</bpws:startCounterValue>
<bpws:finalCounterValue>
<![CDATA[count($feedReaderResponse.parameters/xsd:return/xsd:content)]]>
</bpws:finalCounterValue>
<bpws:scope>
<bpws:assign name="AddResultToOutput" validate="no">
<bpws:copy>
<bpws:from><![CDATA[$feedReaderResponse.parameters/xsd:return/xsd:content[$Counter]/xsd:content]]></bpws:from>
<bpws:to><![CDATA[$output.payload/tns:result[$Counter]/tns:htmlContent]]></bpws:to>
</bpws:copy>
</bpws:assign>
</bpws:scope>
</bpws:forEach>
I'm quite not sure of my XPath Expressions as I'm (really) far from an
expert, but as far as I understand BPEL specification, the counter
variable (basically $Counter) should be implicitly accessible inside the
loop.
Or, when I 'bpel-compile' my process, the compiler fails :
[exec] null:90: error: [UndeclaredVariable] Attempt to reference
undeclared variable "Counter".
[exec] null:95: error: [UndeclaredVariable] Attempt to reference
undeclared variable "Counter".
[exec] java org.apache.ode.tools.bpelc.cline.BpelC: null
[exec] java.lang.NullPointerException
[exec] at
org.apache.ode.bpel.o.OForEach.toString(OForEach.java:41)
[exec] at java.lang.String.valueOf(String.java:2615)
[exec] at java.lang.StringBuilder.append(StringBuilder.java:116)
[exec] at
org.apache.ode.bpel.compiler.BpelCompiler.compile(BpelCompiler.java:839)
[exec] at
org.apache.ode.bpel.compiler.SequenceGenerator.compileChildren(SequenceGenerator.java:47)
[exec] at
org.apache.ode.bpel.compiler.SequenceGenerator.compile(SequenceGenerator.java:41)
[exec] at
org.apache.ode.bpel.compiler.BpelCompiler$7.run(BpelCompiler.java:882)
[exec] at
org.apache.ode.bpel.compiler.BpelCompiler.compile(BpelCompiler.java:1045)
[exec] at
org.apache.ode.bpel.compiler.BpelCompiler.compileActivity(BpelCompiler.java:878)
[exec] at
org.apache.ode.bpel.compiler.BpelCompiler.compile(BpelCompiler.java:831)
[exec] at
org.apache.ode.bpel.compiler.BpelCompiler$5.run(BpelCompiler.java:708)
[exec] at
org.apache.ode.bpel.compiler.BpelCompiler$8.run(BpelCompiler.java:1139)
[exec] at
org.apache.ode.bpel.compiler.BpelCompiler.compile(BpelCompiler.java:1045)
[exec] at
org.apache.ode.bpel.compiler.BpelCompiler.compileScope(BpelCompiler.java:1089)
[exec] at
org.apache.ode.bpel.compiler.BpelCompiler.compile(BpelCompiler.java:688)
[exec] at
org.apache.ode.bpel.compiler.BpelC.compile(BpelC.java:260)
[exec] at
org.apache.ode.bpel.compiler.BpelC.compile(BpelC.java:330)
[exec] at
org.apache.ode.tools.bpelc.BpelCompileCommand.execute(BpelCompileCommand.java:121)
[exec] at
org.apache.ode.tools.bpelc.cline.BpelC.main(BpelC.java:99)
So, I guess that my XPath is wrong, but It should be possible to access
to $Counter inside it however ...
Any ideas ?
Cheers,
--
Sebastian
