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MarshalledTupleKeyEntityobjects are instantiated using Java deserialization, no particular constructor is required by classes that implement this interface.
Note that a marshalled tuple key extractor is somewhat less efficient than a non-marshalled key tuple extractor because more conversions are needed. A marshalled key extractor must convert the entry to an object in order to extract the key fields, while an unmarshalled key extractor does not.
The specified index key should be changed by this method such that
for the same key name will return false.
Other fields in the data object should remain unchanged.
specified when opening the secondary database, this method is called
when the entity for this foreign key is deleted. If NULLIFY was not
specified, this method will not be called and may always return
keyNameidentifies the secondary key.