[hibernate-issues] [Hibernate-JIRA] Commented: (HHH-2281) Calling Session.connection() generates java.lang.IllegalArgumentException: interface org.hibernate.jdbc.ConnectionWrapper is not visible from class loader
Thomas Amsler (JIRA)
noreply at atlassian.com
Fri Aug 22 00:55:13 EDT 2008
[ http://opensource.atlassian.com/projects/hibernate/browse/HHH-2281?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_30977 ]
Thomas Amsler commented on HHH-2281:
------------------------------------
I am seeing the same issue, using 3.2.5.ga
> 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
> Issue Type: Bug
> Components: core
> Affects Versions: 3.2.1
> Environment: Hibernate checked out from trunk; revision 10717
> Reporter: Sergey Polzunov
> Assignee: Diego Plentz
>
> 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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