Standard implementation of compareTo(Object). This checks for
equality first (using equals(Object)), then compares the stored object
in the ObjectRowKeys. If the contained object does not implement
Comparable, the superclass version of compareTo(Object) is invoked.
Standard equals implementation. This method compares the ObjectRowKey
object values for equality (== || .equals()). If the passed Object is
not an ObjectRowKey instance, the superclass (RowKey) gets a chance to
evaluate the Object for equality.
Parameters: o - the Object to check equality true if equal, false if not See Also:Object.equals(Object)