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From "Stuart McCulloch (JIRA)" <j...@codehaus.org>
Subject [jira] Commented: (MNG-5042) Regression: CloningClassLoader causes StackOverflowError in groovy
Date Sun, 27 Mar 2011 10:57:22 GMT

    [ http://jira.codehaus.org/browse/MNG-5042?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=261607#action_261607
] 

Stuart McCulloch commented on MNG-5042:
---------------------------------------

Fixed in https://github.com/sonatype/sisu/commit/ac276392dc8f5b3b734c830a6bcd839d22c706fd
- will be available in sisu-inject 2.2.1

> Regression: CloningClassLoader causes StackOverflowError in groovy
> ------------------------------------------------------------------
>
>                 Key: MNG-5042
>                 URL: http://jira.codehaus.org/browse/MNG-5042
>             Project: Maven 2 & 3
>          Issue Type: Bug
>          Components: Class Loading
>    Affects Versions: 3.0, 3.0.1, 3.0.2, 3.0.3
>            Reporter: Patrick Staton
>         Attachments: test-plug.zip
>
>
> I am unable to use a groovy class as a plexus component in maven 3 because groovy's metaclass
mechanism calls Introspector.getBeanInfo() in constructors which in turn calls classloader.loadClass(beanClass.getName()
+ BEANINFO_SUFFIX) (the class name is "FooBar$__plexus2") which in turn causes CloningClassLoader
to create a new clone of the class named "FooBar$__plexus2BeanInfo". When "FooBar$__plexusBeanInfo"
is instantiated groovy's the meta class mechanism again calls 
> Introspector.getBeanInfo() on "FooBar$__plexus2".
> Example stack trace:
> {code}at sis.buildtools.SisMapVersionsPhase.$getStaticMetaClass(VersionsMojo.groovy)
>         at sis.buildtools.SisMapVersionsPhase.<init>(VersionsMojo.groovy:692)
>         at sis.buildtools.SisMapVersionsPhase$__plexus2BeanInfo.<init>(Unknown
Source)
>         at sun.reflect.GeneratedConstructorAccessor5.newInstance(Unknown Source)
>         at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
>         at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
>         at java.lang.Class.newInstance0(Class.java:355)
>         at java.lang.Class.newInstance(Class.java:308)
>         at java.beans.Introspector.instantiate(Introspector.java:1449)
>         at java.beans.Introspector.findExplicitBeanInfo(Introspector.java:431)
>         at java.beans.Introspector.<init>(Introspector.java:380)
>         at java.beans.Introspector.getBeanInfo(Introspector.java:167)
>         at groovy.lang.MetaClassImpl$15.run(MetaClassImpl.java:2940)
>         at java.security.AccessController.doPrivileged(Native Method)
>         at groovy.lang.MetaClassImpl.addProperties(MetaClassImpl.java:2938)
>         at groovy.lang.MetaClassImpl.initialize(MetaClassImpl.java:2921)
>         at org.codehaus.groovy.reflection.ClassInfo.getMetaClassUnderLock(ClassInfo.java:166)
>         at org.codehaus.groovy.reflection.ClassInfo.getMetaClass(ClassInfo.java:182)
>         at sis.buildtools.SisMapVersionsPhase.$getStaticMetaClass(VersionsMojo.groovy)
>         at sis.buildtools.SisMapVersionsPhase.<init>(VersionsMojo.groovy:692)
>         at sis.buildtools.SisMapVersionsPhase$__plexus2BeanInfo.<init>(Unknown
Source)
>         at sun.reflect.GeneratedConstructorAccessor5.newInstance(Unknown Source)
>         at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
>         at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
>         at java.lang.Class.newInstance0(Class.java:355)
>         at java.lang.Class.newInstance(Class.java:308)
>         at java.beans.Introspector.instantiate(Introspector.java:1449)
>         at java.beans.Introspector.findExplicitBeanInfo(Introspector.java:431)
>         at java.beans.Introspector.<init>(Introspector.java:380)
>         at java.beans.Introspector.getBeanInfo(Introspector.java:167)
>         at groovy.lang.MetaClassImpl$15.run(MetaClassImpl.java:2940)
>         at java.security.AccessController.doPrivileged(Native Method)
>         at groovy.lang.MetaClassImpl.addProperties(MetaClassImpl.java:2938)
>         at groovy.lang.MetaClassImpl.initialize(MetaClassImpl.java:2921)
>         at org.codehaus.groovy.reflection.ClassInfo.getMetaClassUnderLock(ClassInfo.java:166)
>         at org.codehaus.groovy.reflection.ClassInfo.getMetaClass(ClassInfo.java:182)
>         at sis.buildtools.SisMapVersionsPhase.$getStaticMetaClass(VersionsMojo.groovy)
>         at sis.buildtools.SisMapVersionsPhase.<init>(VersionsMojo.groovy:692)
>         at sis.buildtools.SisMapVersionsPhase$__plexus2BeanInfo.<init>(Unknown
Source)
>         at sun.reflect.GeneratedConstructorAccessor5.newInstance(Unknown Source)
>         at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
>         at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
>         at java.lang.Class.newInstance0(Class.java:355)
>         at java.lang.Class.newInstance(Class.java:308)
>         at java.beans.Introspector.instantiate(Introspector.java:1449)
>         at java.beans.Introspector.findExplicitBeanInfo(Introspector.java:431)
>         at java.beans.Introspector.<init>(Introspector.java:380)
>         at java.beans.Introspector.getBeanInfo(Introspector.java:167)
>         at groovy.lang.MetaClassImpl$15.run(MetaClassImpl.java:2940)
>         at java.security.AccessController.doPrivileged(Native Method)
>         at groovy.lang.MetaClassImpl.addProperties(MetaClassImpl.java:2938)
>         at groovy.lang.MetaClassImpl.initialize(MetaClassImpl.java:2921)
>         at org.codehaus.groovy.reflection.ClassInfo.getMetaClassUnderLock(ClassInfo.java:166)
>         at org.codehaus.groovy.reflection.ClassInfo.getMetaClass(ClassInfo.java:182)
>         at sis.buildtools.SisMapVersionsPhase.$getStaticMetaClass(VersionsMojo.groovy)
>         at sis.buildtools.SisMapVersionsPhase.<init>(VersionsMojo.groovy:692)
>         at sis.buildtools.SisMapVersionsPhase$__plexus2BeanInfo.<init>(Unknown
Source)
>         at sun.reflect.GeneratedConstructorAccessor5.newInstance(Unknown Source){code}

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