[hibernate-issues] [Hibernate-JIRA] Commented: (HHH-2281) CLONE -Calling Session.connection() generates java.lang.IllegalArgumentException: interface org.hibernate.jdbc.ConnectionWrapper is not visible from class loader
Jasper Rosenberg (JIRA)
noreply at atlassian.com
Wed Feb 21 14:23:37 EST 2007
[ http://opensource.atlassian.com/projects/hibernate/browse/HHH-2281?page=comments#action_26206 ]
Jasper Rosenberg commented on HHH-2281:
---------------------------------------
I can confirm exactly the same behavior as Georg Mittendorfer has observed.
> CLONE -Calling Session.connection() generates java.lang.IllegalArgumentException: interface org.hibernate.jdbc.ConnectionWrapper is not visible from class loader
> -----------------------------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: HHH-2281
> URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-2281
> Project: Hibernate3
> Type: Bug
> Versions: 3.2.1
> Environment: Hibernate checked out from trunk; revision 10717
> Reporter: Sergey Polzunov
>
>
> Calling Session.connection() always generates an exception. Here is the stacktrace I get from the attached test case:
> Exception in thread "main" java.lang.IllegalArgumentException: interface org.hibernate.jdbc.ConnectionWrapper is not visible from class loader
> at java.lang.reflect.Proxy.getProxyClass(Proxy.java:353)
> at java.lang.reflect.Proxy.newProxyInstance(Proxy.java:581)
> at org.hibernate.jdbc.BorrowedConnectionProxy.generateProxy(BorrowedConnectionProxy.java:56)
> at org.hibernate.jdbc.ConnectionManager.borrowConnection(ConnectionManager.java:163)
> at org.hibernate.jdbc.JDBCContext.borrowConnection(JDBCContext.java:111)
> at org.hibernate.impl.SessionImpl.connection(SessionImpl.java:359)
> at TestSession.main(TestSession.java:16)
> Changing the Connection.class.getClassLoader() to BorrowedConnectionProxy.class.getClassLoader() on line 57 in the generateProxy() method solves the problem. I am not very familiar with class loaders so I don't know if this is likeley to cause other problems elsewhere. Removing the ConnectionWrapper.class from the PROXY_INTERFACES array in the org.hibernate.jdbc.BorrowedConnectionProxy also solves the problem, but I guess it was added for a reason.
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