NPE thrown by PassByValueInterceptor in one-way async ws sample
(greeterws-oneway)
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Key: TUSCANY-1004
URL: http://issues.apache.org/jira/browse/TUSCANY-1004
Project: Tuscany
Issue Type: Bug
Components: Java SCA Axis Binding, Java SCA Core
Affects Versions: Java-Mx
Reporter: Ignacio Silva-Lepe
Fix For: Java-Mx
I'm seeing an NPE thrown by PassByValueInterceptor in the greeterws-oneway
sample, service side. The trace is below. This happens after the invocation of
the service returns (with a null, since it is a void return type). The target
invoker puts the null return value in the message body and returns the message.
The interceptor then gets the body and tries to do something with it. My
thought then was that the supplychain sample should also fail, but it does not,
not sure why, perhaps the interceptor is not used there. Notice that the
databinding interceptor does check to see if the operation is non-blocking (ie,
one-way) before it tries to do something with the result, but in that case the
interceptor returns immediately and does not do any more transformation. Not
sure what the correct behavior for the pass-by-value interceptor should be here.
Trace from tomcat:
INFO: Server startup in 5155 ms
Hello John
java.lang.NullPointerException
at org.apache.tuscany.core.databinding.impl.PassByValueInterceptor.copy(
PassByValueInterceptor.java:108)
at org.apache.tuscany.core.databinding.impl.PassByValueInterceptor.invok
e(PassByValueInterceptor.java:68)
at org.apache.tuscany.core.wire.NonBlockingBridgingInterceptor$1.run(Non
BlockingBridgingInterceptor.java:79)
at org.apache.tuscany.core.services.work.jsr237.Jsr237WorkScheduler$Jsr2
37Work.run(Jsr237WorkScheduler.java:212)
at org.apache.tuscany.core.services.work.jsr237.workmanager.ThreadPoolWo
rkManager$DecoratingWork.run(ThreadPoolWorkManager.java:206)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExec
utor.java:650)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor
.java:675)
at java.lang.Thread.run(Thread.java:595)
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