[hibernate-issues] [Hibernate-JIRA] Closed: (HHH-5731) Javassist Enhancement fails when JPA Entity has an attribute named "handler"

Javassist Enhancement fails when JPA Entity has an attribute named "handler" ---------------------------------------------------------------------------- Key: HHH-5731 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-5731 Project: Hibernate Core Issue Type: Bug Affects Versions: 3.5.5 Environment: Hibernate 3.5.5 (I observed the problem in JBoss AS 6 M4 and M5) (Database MySQL) Reporter: Jan Van Bulck I have an Entity called {{HandlerError}}, refering to another Entity called {{Handler}} The getter {{getHandler()}} causes following problem when I deploy the application to JBoss 6 AS *M4* {code} 15:49:37,306 ERROR [BasicLazyInitializer] Javassist Enhancement failed: c.u.p.model.HandlerError: java.lang.RuntimeException: duplicate method: getHandler in c.u.p.model.HandlerError_$$_javassist_11 at javassist.util.proxy.ProxyFactory.createClass3(ProxyFactory.java:509) [javassist.jar:6.0.0.20100721-M4] at javassist.util.proxy.ProxyFactory.createClass2(ProxyFactory.java:486) [javassist.jar:6.0.0.20100721-M4] at javassist.util.proxy.ProxyFactory.createClass1(ProxyFactory.java:422) ... Caused by: javassist.bytecode.DuplicateMemberException: duplicate method: getHandler in c.u.p.model.HandlerError_$$_javassist_11 at javassist.bytecode.ClassFile.testExistingMethod(ClassFile.java:637) [javassist.jar:6.0.0.20100721-M4] ... 15:49:37,311 WARN [PojoEntityTuplizer] could not create proxy factory for:com.unifiedpost.payments.model.HandlerError: org.hibernate.HibernateException: Javassist Enhancement failed: c.u.p.model.HandlerError at org.hibernate.proxy.pojo.javassist.JavassistLazyInitializer.getProxyFactory(JavassistLazyInitializer.java:170) [:3.5.2-Final] at org.hibernate.proxy.pojo.javassist.JavassistProxyFactory.postInstantiate(JavassistProxyFactory.java:66) [:3.5.2-Final] {code} The same code works well in JBoss 6 AS *M3*. ||JBoss 6 Release||Javassist dependency|| |M3 |javassist-3.11.0.GA.jar| |M4 |javassist-3.12.1.GA.jar| |M5 |javassist-3.12.1.GA.jar| |20101112 |javassist-3.12.1.GA.jar| In between M3 and M4, following issue has been 'fixed': [JASSIST-97|https://jira.jboss.org/browse/JASSIST-97] Not sure if it's related, but it looks close given the [patch|https://jira.jboss.org/secure/attachment/12332449/JASSIST-97.patch]