Representation of an error encountered initialising a datastore.
Exception thrown when trying to update a datastores contents when it is read-only.
A DatastoreValidationException is thrown if a mismatch is discovered between what the JDO runtime thinks the datastore should look like and what it actually looks like.
A NoExtentException is thrown if an attempt is made to perform an operation using a class that is not backed by an extent (ie table or view) in the database and the operation is not supported on such classes.
Exception thrown when an pc instance instance is not yet flushed to the datastore, but it was expected to already be.
An exception that is thrown when we have a relation to another persistable object that is not yet persistent and where the relation is not marked as cascade-persist.
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