8 Replies Latest reply on Dec 18, 2015 8:23 AM by foutjo

jboss-modules LinkageError / Translet class loaded, but unable to create translet instance.

stephen.flynn Jun 22, 2014 6:52 AM

I am attempting to upgrade from Wildfly 8.0.0.Final to 8.1.0.Final and have encountered the following exception when creating an instance of javax.xml.transform.Transformer from an instance of javax.xml.transform.Templates.

The stack trace is as follows...

Caused by: javax.xml.transform.TransformerConfigurationException: Translet class loaded, but unable to create translet instance.

at com.sun.org.apache.xalan.internal.xsltc.trax.TemplatesImpl.defineTransletClasses(TemplatesImpl.java:369) [rt.jar:1.7.0_45]

at com.sun.org.apache.xalan.internal.xsltc.trax.TemplatesImpl.getTransletInstance(TemplatesImpl.java:383) [rt.jar:1.7.0_45]

at com.sun.org.apache.xalan.internal.xsltc.trax.TemplatesImpl.newTransformer(TemplatesImpl.java:418) [rt.jar:1.7.0_45]

This is a trapped Linkage error. The stack trace doesn't help much as the root cause of this seems to be that the redirected TransformerFactory produced by jboss-modules (of type __redirected.__TransformerFactory) behaves differently between 8.0.0 (containing jboss-module 1.3.1) and 8.1.0 (containing jboss-module 1.3.3).

When calling TransformerFactory.newTemplates() from __redirected.__TransformerFactory class in jboss-module 1.3.1 the factory produces an instance of type org.apache.xalan.xsltc.trax.TemplatesImpl.

When calling TransformerFactory.newTemplates() from __redirected.__TransformerFactory class in jboss-module 1.3.3 the factory produces an instance of type com.sun.org.apache.xalan.internal.xsltc.trax.TemplatesImpl. This appears to be wrong (or at the very least a significant change in behaviour) and leads to a Linkage error when the Templates instance is subsequently used to produce a Transfomer.

1. Re: jboss-modules LinkageError / Translet class loaded, but unable to create translet instance.

dmarcou Nov 21, 2014 7:35 PM (in response to stephen.flynn)

Has there been any movement on this issue, I am also experiencing the exact same issue, when upgrading from Jboss 7.1.1.Final to Wildfly 8.1.0Final ?
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2. Re: jboss-modules LinkageError / Translet class loaded, but unable to create translet instance.

dmlloyd Nov 24, 2014 11:23 AM (in response to dmarcou)

I'm not sure why this would suddenly start happening. Can you test in upstream to see if the problem exists there? What about 8.2.0.Final?
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3. Re: jboss-modules LinkageError / Translet class loaded, but unable to create translet instance.

dmarcou Nov 24, 2014 4:02 PM (in response to dmlloyd)

Not sure what you mean by upstream, however I did just install the 8.2.0.Final update and I see the same exception there.
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4. Re: jboss-modules LinkageError / Translet class loaded, but unable to create translet instance.

dmarcou Nov 26, 2014 12:29 PM (in response to stephen.flynn)

So I solved my problem by including xalan and xerces jars in my web application. Previously I had been trying to reference them via the jboss modules.
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5. Re: jboss-modules LinkageError / Translet class loaded, but unable to create translet instance.

skay088 Dec 11, 2014 4:09 AM (in response to dmarcou)

Hi,

I'm encountering same issue with WildFly 8.1-FInal
However, with the same WAR artifact deployed on
1) Jboss 7.1 -> No LinkageError
2) upgrading to WildFly 8.2-final -> same issue / LinkageError

=> This bug hasn't been corrected (!!!).

I think you'll share my opinion : It is absolutely not safe and Xalan /Jaxp management is clearly the job of the AS / not the application !!
DId you find something else than your work-around / embeeding Xalan ?

BR
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6. Re: jboss-modules LinkageError / Translet class loaded, but unable to create translet instance.

dmlloyd Dec 11, 2014 8:55 AM (in response to skay088)

No, the problem has not been solved yet. I can tell you that the problem seems extremely unlikely to have been introduced between JBoss Modules 1.3.1 and 1.3.3; it may be a result of some change to the application server's class loader building, but I'm not sure about that either.
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7. Re: jboss-modules LinkageError / Translet class loaded, but unable to create translet instance.

skay088 Dec 11, 2014 10:25 AM (in response to dmlloyd)

Thanks for your reply; meanwhile I opened an issue :
https://issues.jboss.org/browse/WFLY-4174
Tell me if this is the correct process !

A workaround consist in embeeding Xalan / see my comments.

But could you tell me if it is possible to add/expose the Wildfly's Xalan distrib into the classpath directly through standalone.xml configuration or something smarter, like adding an extra module.xml configuration ?
BR
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8. Re: jboss-modules LinkageError / Translet class loaded, but unable to create translet instance.

foutjo Dec 18, 2015 8:23 AM (in response to stephen.flynn)

I am getting the same issue with wildfly 9.0.
I was previously running 7.1 and worked without giving exception.

Can anyone tell me if this issue has been fixed yet?
Or is there some type of work around that I can apply?

Any help is greatly appreciated.
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