घोषणा करते समय आपने कुछ गलतियाँ की हैं, व्याख्या इनलाइन देखें:
CREATE OR REPLACE TYPE VC_MNumber AS OBJECT
(
idno NUMBER,
MEMBER FUNCTION dimension
RETURN NUMBER,
MEMBER FUNCTION typeName
RETURN VARCHAR2
)
NOT INSTANTIABLE NOT FINAL;
/
--DROP TYPE VC_MINTEGER;
CREATE OR REPLACE TYPE VC_MInteger
UNDER VC_MNumber
(
OVERRIDING MEMBER FUNCTION dimension
RETURN NUMBER,
OVERRIDING MEMBER FUNCTION typeName
RETURN VARCHAR2
);
/
CREATE OR REPLACE TYPE VC_MReal
UNDER VC_MNumber
(
YDCCoeff NUMBER,
CbDCCoeff NUMBER,
CrDCCoeff NUMBER,
OVERRIDING MEMBER FUNCTION Dimension --<--Overriding function should have same name
RETURN NUMBER,
OVERRIDING MEMBER FUNCTION typeName
RETURN VARCHAR2
)
FINAL;
/
CREATE OR REPLACE TYPE BODY VC_MReal
AS
OVERRIDING MEMBER FUNCTION Dimension
RETURN NUMBER
IS
var_dimension NUMBER := 10;
BEGIN
RETURN var_dimension;
END;
OVERRIDING MEMBER FUNCTION typeName --<-- You declared in Object type as `overriding` function and using it as `Member function` alone.
RETURN VARCHAR2
IS
var_typeName VARCHAR2 (400) := 'VC_MREAL';
BEGIN
RETURN var_typeName;
END;
END;
/