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Problem When committing changes to a Cayenne context, you get an exception like the following. org.apache.cayenne.CayenneRuntimeException: (v.3.0.1 Sep 06 2010 15:09:38) Temporary ID hasn’t been replaced on commit Cause You are trying to commit an object for which Cayenne does not know how to generate a permanent id. This in turn typically happens when the [...]

Problem When committing changes to a Cayenne context, you get an exception like the following. org.apache.cayenne.CayenneRuntimeException: (v.3.0.1 Sep 06 2010 15:09:38) Error generating PK : entity not supported: SOME_TABLE Cause A column that is part of the primary key of SOME_TABLE has no value. Therefore Cayenne tries to generate one, but does not know how [...]