A Referential Integrity checker for a change
to a referenced key (primary or unique). Makes
sure that all the referenced key row is not
referenced by any of its foreign keys. see
ForeignKeyRIChecker for the code that validates
changes to foreign keys.
Check that the row either has a null column(s), or
has no corresponding foreign keys.
If a foreign key is found, an exception is thrown.
If not, the scan is closed.
Parameters: row - the row to check exception: StandardException - on unexpected error, oron a primary/unique key violation
Fields inherited from org.apache.derby.impl.sql.execute.GenericRIChecker