Re: [Php-java-bridge-users] ClassCastExceptions in standalone deployment

[<php...@li...>]

We did some research on the JAXBContext class, and found that when most
people had trouble and saw ClassCastExceptions, it was related to the
class loader.  To avoid class loader issues as much as possible, we
started sticking the result of each "new JavaClass(...)" in a static
class (which will persist indefintely), so we'd only have to call it
once per class in all of our code.  This seemed to lessen the problem,
but then we began seeing IllegalArgumentExceptions popping up here and
there, like so:


[[o:Exception]:"java.lang.Exception: Invoke failed:
[[o:ObjectFactory]]->createContactInformation((o:ContactInformationType)
[o:ContactInformationType]). Cause: java.lang.IllegalArgumentException:
argument type mismatch Responsible VM: 1.5.0_08@http://java.sun.com/"
at:
#-9 sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
#-8 sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
#-7 sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
#0 http://localhost:8181/JavaBridge/java/Java.inc(151):
java_ThrowExceptionProxyFactory->getProxy(41, true)
#1 http://localhost:8181/JavaBridge/java/Java.inc(304):
java_Arg->getResult(true)
#2 http://localhost:8181/JavaBridge/java/Java.inc(310):
java_Client->getWrappedResult(true)
#3 http://localhost:8181/JavaBridge/java/Java.inc(489):
java_Client->getResult()
#4 http://localhost:8181/JavaBridge/java/Java.inc(735):
java_Client->invokeMethod(38, 'createContactIn...', Array)
#5 http://localhost:8181/JavaBridge/java/Java.inc(853):
java_JavaProxy->__call('createContactIn...', Array)
#6 [internal function]: Java->__call('createContactIn...', Array)
#7 C:\deploy\merged\php-client\IndivoAPI.class.php(708):
Java->createContactInformation(Object(java_InternalJavaObject))


Perfectly functional methods are now rejecting perfectly good arguments,
also pointing toward class loader issues.  It bears repeating that we're
using version 4.0.7 now, and never saw such issues with v3.0.7.  We even
checked out the trunk from CVS and built the latest-and-greatest, and
still saw these problems.  To be completely transparent, we also need to
mention that almost all of the classes that we're working with have
either been generated by JAXB or are part of the JAXB API.  I think JAXB
is a red-herring (it all worked well together in php-java-bridge 3.0.7)
but its worth mentioning.

One last fact... We've run the JavaBridge through Tomcat and in
standalone mode (java -jar...) and the problem seems to arise much
"quicker" when we run in Tomcat.  The errors are sporadic in both and
happen in different locations each time. Sometimes a method invocation
will succeed in one run and then fail in another.

We want to be as helpful as possible while trying to resolve this issue.
What other information can we send you to help isolate the problem?

Thanks,
Jon Abbett & Bill Simons
Children's Hospital Boston

P.S. How do I specify where to write the log file in a Tomcat-deployed
Java Bridge?



> -----Original Message-----
> From: php...@li...=20
> [mailto:php...@li...]=20
> On Behalf Of php...@li...
> Sent: Wednesday, June 06, 2007 5:15 AM
> To: php...@li...
> Subject: Re: [Php-java-bridge-users] ClassCastExceptions in=20
> standalone deployment
>=20
> Hi Jonathan,
>=20
> > [[o:Exception]:"java.lang.Exception: Invoke failed:
> >
> [[c:JAXBContext]]->newInstance((o:String)[o:String]).
> > Cause:
> > java.lang.ClassCastException:
> > com.sun.xml.bind.v2.runtime.JAXBContextImpl
>=20
> sounds like a problem internal to JAXBContextImpl.
>=20
> > Responsible VM:
> > 1.5.0_08@http://java.sun.com/" at:
> > #-14
> >
> javax.xml.bind.ContextFinder.newInstance(ContextFinder.java:149)
>=20
> I guess the above class uses a constructor which
> requires a different logging API than provided.
>=20
> Do you have the source code of the above class?
>=20
>=20
> Regards,
> Jost Boekemeier
>=20
>=20
>=20
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> haben Fragen? Yahoo! Nutzer antworten Ihnen. www.yahoo.de/clever
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