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From "Rick Curtis (JIRA)" <j...@apache.org>
Subject [jira] Resolved: (OPENJPA-1676) PCClassFileTransformer.transform causing NPE when class name is null
Date Tue, 13 Jul 2010 15:13:49 GMT

     [ https://issues.apache.org/jira/browse/OPENJPA-1676?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Rick Curtis resolved OPENJPA-1676.
----------------------------------

    Resolution: Fixed

Committed revision 963752 to trunk

> PCClassFileTransformer.transform causing NPE when class name is null
> --------------------------------------------------------------------
>
>                 Key: OPENJPA-1676
>                 URL: https://issues.apache.org/jira/browse/OPENJPA-1676
>             Project: OpenJPA
>          Issue Type: Bug
>          Components: kernel
>    Affects Versions: 2.0.0, 2.1.0
>         Environment: jdk1.6.20
>            Reporter: Christophe Roos
>            Assignee: Rick Curtis
>             Fix For: 2.1.0
>
>
> openjpa  WARN   [AWT-EventQueue-0] openjpa.Enhance - An exception was thrown while attempting
to perform class file transformation on "null":
> java.lang.NullPointerException
> 	at org.apache.openjpa.enhance.PCClassFileTransformer.needsEnhance(PCClassFileTransformer.java:175)
> 	at org.apache.openjpa.enhance.PCClassFileTransformer.transform0(PCClassFileTransformer.java:132)
> 	at org.apache.openjpa.enhance.PCClassFileTransformer.transform(PCClassFileTransformer.java:120)
> 	at sun.instrument.TransformerManager.transform(TransformerManager.java:169)
> 	at sun.instrument.InstrumentationImpl.transform(InstrumentationImpl.java:365)
> 	at java.lang.ClassLoader.defineClass1(Native Method)
> 	at java.lang.ClassLoader.defineClassCond(ClassLoader.java:632)
> 	at java.lang.ClassLoader.defineClass(ClassLoader.java:616)
> 	at java.lang.ClassLoader.defineClass(ClassLoader.java:466)
> 	at com.sun.org.apache.xalan.internal.xsltc.trax.TemplatesImpl$TransletClassLoader.defineClass(TemplatesImpl.java:126)
> 	at com.sun.org.apache.xalan.internal.xsltc.trax.TemplatesImpl.defineTransletClasses(TemplatesImpl.java:312)
> 	at com.sun.org.apache.xalan.internal.xsltc.trax.TemplatesImpl.getTransletInstance(TemplatesImpl.java:349)
> 	at com.sun.org.apache.xalan.internal.xsltc.trax.TemplatesImpl.newTransformer(TemplatesImpl.java:382)
> 	at net.sourceforge.jeuclid.DOMBuilder.createTransformer(DOMBuilder.java:95)
> 	at net.sourceforge.jeuclid.DOMBuilder.<init>(DOMBuilder.java:75)
> 	at net.sourceforge.jeuclid.DOMBuilder$SingletonHolder.<clinit>(DOMBuilder.java:53)
> 	at net.sourceforge.jeuclid.DOMBuilder.getInstance(DOMBuilder.java:110)
> 	at net.sourceforge.jeuclid.layout.JEuclidView.<init>(JEuclidView.java:75)
> The code causing the error is in the JVM, because defineClass is called with a null class
name:
> static final class TransletClassLoader extends ClassLoader {
> 	TransletClassLoader(ClassLoader parent) {
> 	    super(parent);
> 	}
>         /**
>          * Access to final protected superclass member from outer class.
>          */
> 	Class defineClass(final byte[] b) {
> ====>            return defineClass(null, b, 0, b.length);    <=====
> 	}
>     }

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