[GROOVY-2232] VerifyError when using DelegatingMetaClass

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.1-rc-1
• Fix Version/s: 1.1-rc-2
• Environment: Environment WinXP SP2; The eclipse plugin is V 1.0.1 installed on Eclipse 3.3.0; When trying to run the script standalone I use Groovy Version: 1.1-rc-1 JVM: 1.6.0_03-b05
• Assignee: Jochen Theodorou
• Reporter: Horia Muntean
• Created: 22/Oct/07 03:53
• Updated: 26/Oct/07 10:02
• Resolved: 26/Oct/07 10:02

Description

Hi, I have a problem with DelegatingMetaClass. I am trying to extend groovy.sql.Sql class with a static method similar to newInstance but that takes only one parameter ( a file name that contains all the connection parameters )

So I have used DelegatingMetaClass conventions and here is my SqlMetaClass.groovy:
------------------------
package groovy.runtime.metaclass.groovy.sql

import groovy.sql.Sql

class SqlMetaClass extends groovy.lang.DelegatingMetaClass
{
SqlMetaClass(MetaClassRegistry a_registry, final Class a_class)

{ super(a_class); }

public Object invokeStaticMethod(Object a_object, String a_methodName, Object[] a_arguments)
{
if(a_methodName == 'newInstance'){
if(a_arguments.length == 1)

{ //interpret the first argument as a file name Properties props = new Properties() props.load(new FileInputStream(a_arguments[0])) return Sql.newInstance(props['db.url'],props['db.user'], props['db.password'], props['db.drivername']) }

}
return super.invokeStaticMethod(a_object, a_methodName, a_arguments)
}
}
------------------------

Afterwards calling Sql.newInstance('hsql.properties') in some script worked as expected.
My problem is that it works only from eclipse, the moment I try to use it standalone I get some errors:

1. Calling the script as groovy -cp ../bin-groovy bug.groovy ( using the compiled class generated by the eclipse plug-in ) I get:

Caught: java.lang.VerifyError: (class: groovy/runtime/metaclass/groovy/sql/SqlMetaClass, method: super$2$invokeMethod signature: (Ljava/lang/Class;Ljava/lang/Object;Ljava/lang/String;[Ljava/lang/Object;ZZ)Ljava/lang/Object Illegal use of nonvirtual function call
at bug.run(bug.groovy:4)
at bug.main(bug.groovy)

2. Calling the script as groovy -cp ../clazzez bug.groovy gives me :
Caught: java.lang.VerifyError: (class: groovy/runtime/metaclass/groovy/sql/SqlMetaClass, method: super$2$setUseReflection signature: (Z)V) Illegal use of nonvirtual function call
at bug.run(bug.groovy:4)
at bug.main(bug.groovy)

where clazzez is the directory where I compiled the SqlMetaClass.groovy file using groovyc

<?xml version="1.0"?>

<project name="Compile a groovy class" default="compile" basedir=".">
<target name="compile">
<taskdef name="groovyc" classname="org.codehaus.groovy.ant.Groovyc" />

<groovyc srcdir="scripts/groovy" destdir="clazzez">

</groovyc>

</target>
</project>

Environment WinXP SP2
The eclipse plugin is V 1.0.1 installed on Eclipse 3.3.0
When trying to run the script standalone I use Groovy Version: 1.1-rc-1 JVM: 1.6.0_03-b05