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[eclipselink-users] jpa_helper_invalid_queryclass $Proxy34

I'm receiving the following error almost randomly, but once I receive
it, all subsequent calls using the em fail:

jpa_helper_invalid_queryclass $Proxy34 (There is no English
translation for this message.)

I use the following before each query:
Query query = em.createQuery(...);

I looked at the code inside JpaHelper.getDatabaseQuery() which is
where the exception is thrown and it reads:

        if (query instanceof JpaQuery) {
            return ((JpaQuery)query).getDatabaseQuery();

        throw new
+ query.getClass()));

Any idea how to get around the proxy?


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