Appian Release 6.6.1 In an if statement we used the function isuserna

felixl over 10 years ago

Appian Release 6.6.1

In an if statement we used the function isusernametake for the conditional. The following exception was thrown:
The expression function 'isusernametaken("fleung")' (user=fleung, exprId=690) could not be evaluated: JAXB failure trying to convert value true to Appian type Boolean (id=26)

The error has not been reproducible. The node that caught the error was restarted and it completed successfully.

In the logs the following exceptions appear as well in the stack.
Caused by: com.appiancorp.common.xml.JaxbConversionException: JAXB failure trying to convert value true to Appian type Boolean (id=26)
Caused by: javax.xml.bind.JAXBException: ClassCastException: attempting to cast jar:file:/opt/jboss-5.1.0.GA/lib/endorsed/jaxb-api.jar!/javax/xml/bind/JAXBContext.class to vfszip:/opt/appian/runtime_ear/suite.ear/lib/jaxb-api-2.1.jar/javax/xml/bind/JAXBContext.class. Please make sure that you are specifying the proper Cl...

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0 felixl over 10 years ago

...assLoader.

This is the first I've seen of this error. If anyone has experienced a similar error before your input is greatly appreciated. Thanks.
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0 felixl over 10 years ago

hmmm, that is an unfortunate carry over
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0 Matt Luo
Appian Employee
over 10 years ago

This error will be thrown if there is a data casting error. Please be sure the input is the expected data type.
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0 shelzle over 10 years ago

Try to restart JBoss. If that fixes the error your problem relates to duplicate libraries within plugin jars. Check all jars for libraries that are also delivered by Appian. Appian support can help you on this.
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