[jboss-jira] [JBoss JIRA] Created: (JASSIST-35) Equals and Hashcode on Javassist's (proxied) Annotations do not match the java.lang.Annotation contract

[Paul Field (JIRA)]

Equals and Hashcode on Javassist's (proxied) Annotations do not match the java.lang.Annotation contract
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                 Key: JASSIST-35
                 URL: http://jira.jboss.com/jira/browse/JASSIST-35
             Project: Javassist
          Issue Type: Bug
            Reporter: Paul Field
         Assigned To: Shigeru Chiba


java.lang.Annotation defines that implementation provide a very particular implementation of equals() and hashcode() that implement a definition of "logically equivalent" for annotations. See: http://java.sun.com/j2se/1.5.0/docs/api/java/lang/annotation/Annotation.html

The current implementation of Javassist (3.6.0 RC1) uses a proxy backed by javassist.bytecode.annotation.AnnotationImpl. It does not implement hashcode() and equals() according to the Annotation contract.

This makes it hard to tell if two annotations are equivalent (e.g. when the same type of annotation has been used on various overriden versions of a method).


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