[jboss-user] [Javassist user questions] - 3.1: Use of .class causes VerifyError
Whenever I try to use the .class construct inside a Javassist method body, I get a
VerifyError.
The text below is from my class transformer; it represents the additions and changes made
to a particular class as it is loaded.
| [DEBUG] RenderableUser Finished class transformation: InternalClassTransformation[
| public org.apache.tapestry.integration.app1.components.RenderableUser extends
java.lang.Object
| implements org.apache.tapestry.runtime.ComponentLifecycle
|
| add field: protected org.apache.tapestry.internal.InternalComponentResources
_$resources;
|
| extend method: public org.apache.tapestry.ComponentResources getComponentResources()
| return _$resources;
|
| add field: protected org.apache.tapestry.services.Environment _$environment;
|
| add method: private org.apache.tapestry.Renderable _$environment_read_renderable()
| return ($r) _$environment.peek(org.apache.tapestry.Renderable.class);
|
| replace read _renderable: _$environment_read_renderable();
|
| add method: private void _write__renderable(org.apache.tapestry.Renderable $1)
| throw new java.lang.RuntimeException("Field
org.apache.tapestry.integration.app1.components.RenderableUser._renderable is
read-only.");
|
| replace write _renderable: _write__renderable();
|
| extend method: public void beginRender(org.apache.tapestry.MarkupWriter $1,
org.apache.tapestry.runtime.LifecycleEvent $2)
| {
| if ($2.isAborted()) return;
| render($1);
| }
|
|
| convert default constructor: initializer();
|
| add constructor:
org.apache.tapestry.integration.app1.components.RenderableUser(org.apache.tapestry.internal.InternalComponentResources
$1, org.apache.tapestry.services.Environment $2)
| {
| _$resources = $1;
| _$environment = $2;
| initializer();
|
| }
|
| ]
|
Results in:
| java.lang.VerifyError: (class:
org/apache/tapestry/integration/app1/components/RenderableUser, method:
_$environment_read_renderable signature: ()Lorg/apache/tapestry/Renderable;) Inconsistent
args_size for opc_invokeinterface
| at java.lang.Class.getDeclaredConstructors0(Native Method)
| at java.lang.Class.privateGetDeclaredConstructors(Class.java:2328)
| at java.lang.Class.getConstructors(Class.java:1446)
| at
org.apache.tapestry.internal.services.ReflectiveInstantiator.findConstructor(ReflectiveInstantiator.java:60)
| at
org.apache.tapestry.internal.services.ReflectiveInstantiator.<init>(ReflectiveInstantiator.java:48)
| at
org.apache.tapestry.internal.services.InternalClassTransformationImpl.createInstantiator(InternalClassTransformationImpl.java:1043)
|
Has anyone else had any luck using .class?
I think, in my situation, I'll be able to work around this using the $type
production.
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