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https://issues.apache.org/jira/browse/ODE-541?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Mark Ford updated ODE-541:
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Attachment: HelloWorld2.zip
Attached is the HelloWorld2 process from the examples directory with a small
modification to demonstrate the problem. My change to the process was to switch
the final to-spec to be an XQuery expression as opposed to the standard
variable/part copy.
i.e.
<to variable="myVar" part="TestPart"/>
becomes
<to
expressionLanguage="urn:oasis:names:tc:wsbpel:2.0:sublang:xquery1.0">$myVar.TestPart</to>
The process responds with a selection failure. Note that the to-spec is valid
and will work if you drop the expressionLanguage attribute and force it back to
XPath 2.0 which is the default for this example process.
> NPE in to-spec when default language is XQuery
> ----------------------------------------------
>
> Key: ODE-541
> URL: https://issues.apache.org/jira/browse/ODE-541
> Project: ODE
> Issue Type: Bug
> Components: BPEL Runtime
> Affects Versions: 1.3.2
> Reporter: Mark Ford
> Priority: Minor
> Fix For: 1.4
>
> Attachments: HelloWorld2.zip
>
>
> The expression language for the process has been set to
> urn:oasis:names:tc:wsbpel:2.0:sublang:xquery1.0. The code below throws a NPE
> because the xpath variable in the class is null. Looks like the subclass
> OXQuery10ExpressionBPEL20 needs to override the getVariable method or perhaps
> encapsulate access to the expression variable.
> I suspect that the simple workaround is to override the expressionLanguage
> for the to-spec to force XPath 1.0.
> Caused by: java.lang.NullPointerException
> at
> org.apache.ode.bpel.elang.xpath10.o.OXPath10Expression.getVariable(OXPath10Expression.java:182)
> at
> org.apache.ode.bpel.o.OAssign$LValueExpression.getVariable(OAssign.java:135)
> at org.apache.ode.bpel.runtime.ASSIGN.evalLValue(ASSIGN.java:127)
> at org.apache.ode.bpel.runtime.ASSIGN.copy(ASSIGN.java:361)
> at org.apache.ode.bpel.runtime.ASSIGN.run(ASSIGN.java:81)
> at sun.reflect.GeneratedMethodAccessor72.invoke(Unknown Source)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> at java.lang.reflect.Method.invoke(Method.java:597)
> at
> org.apache.ode.jacob.vpu.JacobVPU$JacobThreadImpl.run(JacobVPU.java:451)
> ... 15 more
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