groovy

java.lang.ClassCastException: gjdk.org.codehaus.groovy.tools.RootLoader_GroovyReflector

Details

  • Type: Bug Bug
  • Status: Closed Closed
  • Priority: Minor Minor
  • Resolution: Fixed
  • Affects Version/s: 1.1-beta-1
  • Fix Version/s: 1.1-beta-2
  • Component/s: None
  • Labels:
    None
  • Environment:
    Linux, Fedora
  • Number of attachments :
    0

Description

given the file betabug.groovy:

def rloader = new javax.xml.namespace.QName("","").getClass().getClassLoader()
java.lang.Package[] pkgs = rloader.getPackages()

running the following shell script

export JAVA_HOME=/home/nate/java/jdk1.6.0
export GROOVY_HOME=/home/nate/java/groovy/groovy-1.1-BETA-1
export CLASSPATH=/home/nate/java/groovy/groovy-1.1-BETA-1/lib/groovy-1.1-BETA-1.jar

PATH=$PATH:$GROOVY_HOME/bin

/home/nate/java/groovy/groovy-1.1-BETA-1/bin/groovy -d /home/nate/CVSROOT/indivo-script/betabug.groovy

get the following exception:

Caught: java.lang.ClassCastException: gjdk.org.codehaus.groovy.tools.RootLoader_GroovyReflector cannot be cast to org.codehaus.groovy.runtime.Reflector
java.lang.ClassCastException: gjdk.org.codehaus.groovy.tools.RootLoader_GroovyReflector cannot be cast to org.codehaus.groovy.runtime.Reflector
at org.codehaus.groovy.runtime.metaclass.MetaClassRegistryImpl.loadReflector(MetaClassRegistryImpl.java:281)
at groovy.lang.MetaClassImpl.generateReflector(MetaClassImpl.java:2143)
at groovy.lang.MetaClassImpl.initialize(MetaClassImpl.java:2025)
at org.codehaus.groovy.runtime.metaclass.MetaClassRegistryImpl.getMetaClass(MetaClassRegistryImpl.java:142)
at org.codehaus.groovy.runtime.Invoker.invokePojoMethod(Invoker.java:132)
at org.codehaus.groovy.runtime.Invoker.invokeMethod(Invoker.java:106)
at org.codehaus.groovy.runtime.InvokerHelper.invokeMethod(InvokerHelper.java:111)
at org.codehaus.groovy.runtime.ScriptBytecodeAdapter.invokeMethodN(ScriptBytecodeAdapter.java:187)
at org.codehaus.groovy.runtime.ScriptBytecodeAdapter.invokeMethod0(ScriptBytecodeAdapter.java:211)
at betabug.run(betabug.groovy:2)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.codehaus.groovy.runtime.metaclass.ReflectionMetaMethod.invoke(ReflectionMetaMethod.java:71)
at org.codehaus.groovy.runtime.MetaClassHelper.doMethodInvoke(MetaClassHelper.java:694)
at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:616)
at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:506)
at org.codehaus.groovy.runtime.Invoker.invokePogoMethod(Invoker.java:144)
at org.codehaus.groovy.runtime.Invoker.invokeMethod(Invoker.java:110)
at org.codehaus.groovy.runtime.InvokerHelper.invokeMethod(InvokerHelper.java:111)
at org.codehaus.groovy.runtime.InvokerHelper.runScript(InvokerHelper.java:406)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.codehaus.groovy.runtime.metaclass.ReflectionMetaMethod.invoke(ReflectionMetaMethod.java:71)
at org.codehaus.groovy.runtime.MetaClassHelper.doMethodInvoke(MetaClassHelper.java:694)
at groovy.lang.MetaClassImpl.invokeStaticMethod(MetaClassImpl.java:721)
at org.codehaus.groovy.runtime.Invoker.invokeMethod(Invoker.java:100)
at org.codehaus.groovy.runtime.InvokerHelper.invokeMethod(InvokerHelper.java:111)
at org.codehaus.groovy.runtime.ScriptBytecodeAdapter.invokeMethodN(ScriptBytecodeAdapter.java:187)
at betabug.main(betabug.groovy)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.codehaus.groovy.runtime.metaclass.ReflectionMetaMethod.invoke(ReflectionMetaMethod.java:71)
at org.codehaus.groovy.runtime.MetaClassHelper.doMethodInvoke(MetaClassHelper.java:694)
at groovy.lang.MetaClassImpl.invokeStaticMethod(MetaClassImpl.java:721)
at org.codehaus.groovy.runtime.Invoker.invokeMethod(Invoker.java:100)
at org.codehaus.groovy.runtime.InvokerHelper.invokeMethod(InvokerHelper.java:111)
at groovy.lang.GroovyShell.runMainOrTestOrRunnable(GroovyShell.java:270)
at groovy.lang.GroovyShell.run(GroovyShell.java:244)
at groovy.lang.GroovyShell.run(GroovyShell.java:173)
at groovy.ui.GroovyMain.processOnce(GroovyMain.java:484)
at groovy.ui.GroovyMain.run(GroovyMain.java:294)
at groovy.ui.GroovyMain.process(GroovyMain.java:280)
at groovy.ui.GroovyMain.processArgs(GroovyMain.java:140)
at groovy.ui.GroovyMain.main(GroovyMain.java:121)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.codehaus.groovy.tools.GroovyStarter.rootLoader(GroovyStarter.java:131)
at org.codehaus.groovy.tools.GroovyStarter.main(GroovyStarter.java:160)

Activity

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blackdrag blackdrag added a comment -

I am closing this because the bug is only partly related to Groovy. You have two versions of Groovy in your classpath. One is loaded by the rootloader, one is on the classpath. You should have only one version in the path or things like the mentioned ClassCastException is happening.So either do not use the $classpath variable or remove the groovy jar from the lib directory

Show
blackdrag blackdrag added a comment - I am closing this because the bug is only partly related to Groovy. You have two versions of Groovy in your classpath. One is loaded by the rootloader, one is on the classpath. You should have only one version in the path or things like the mentioned ClassCastException is happening.So either do not use the $classpath variable or remove the groovy jar from the lib directory
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Nathan Finstein added a comment -

Just tried again with a modified shell script:
export JAVA_HOME=/home/nate/java/jdk1.6.0
export GROOVY_HOME=/home/nate/java/groovy/groovy-1.1-BETA-1
export CLASSPATH=

PATH=$PATH:$GROOVY_HOME/bin

groovy -d /home/nate/CVSROOT/indivo-script/betabug.groovy

Still get the exception.

Nate

Show
Nathan Finstein added a comment - Just tried again with a modified shell script: export JAVA_HOME=/home/nate/java/jdk1.6.0 export GROOVY_HOME=/home/nate/java/groovy/groovy-1.1-BETA-1 export CLASSPATH= PATH=$PATH:$GROOVY_HOME/bin groovy -d /home/nate/CVSROOT/indivo-script/betabug.groovy Still get the exception. Nate
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blackdrag blackdrag added a comment -

I decided it is better to have an solution for this

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blackdrag blackdrag added a comment - I decided it is better to have an solution for this
Hide
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blackdrag blackdrag added a comment -

The ReflectorLoader knows now two modes, one to define the Reflector class and and one to do the usual class loading stuff. In the definition mode the Reflector loader will now resolve the request to load the class "Reflector" with the class Reflector known by the runtime, other classloaders are not even asked. With this it should be possible to have multiple runtimes of Groovy without getting the reflector problem

Show
blackdrag blackdrag added a comment - The ReflectorLoader knows now two modes, one to define the Reflector class and and one to do the usual class loading stuff. In the definition mode the Reflector loader will now resolve the request to load the class "Reflector" with the class Reflector known by the runtime, other classloaders are not even asked. With this it should be possible to have multiple runtimes of Groovy without getting the reflector problem

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Dates

  • Created:
    Updated:
    Resolved:
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