> Are these classes generated runtime or i have to generate first and then use?
They are generated at compile time when you compile *only* your @Entity classes. See [1] for compiler instructions. Then these meta-classes can be used to define typesafe queries. See some examples in [2] The explanation about these meta-classes can be found in this article[3] [1] http://openjpa.apache.org/builds/latest/docs/manual/manual.html#d0e11212 [2] https://fisheye6.atlassian.com/browse/openjpa/trunk/openjpa-persistence-jdbc/src/test/java/org/apache/openjpa/persistence/criteria/TestTypesafeCriteria.java?hb=true [3] http://www.ibm.com/developerworks/java/library/j-typesafejpa/#N102F2 ----- Pinaki -- View this message in context: http://openjpa.208410.n2.nabble.com/Example-of-join-in-Criteria-API-tp6291890p6298772.html Sent from the OpenJPA Users mailing list archive at Nabble.com.
