Details
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Bug
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Status: Closed
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Major
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Resolution: Fixed
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3.0, 3.0.1, 3.0.2, 3.0.3
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None
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None
Description
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:
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)