Use user-defined object as attribute for new object type : Type Combination « Object Oriented Database « Oracle PL / SQL






Use user-defined object as attribute for new object type

 
SQL> set echo on
SQL>
SQL>
SQL> CREATE OR REPLACE TYPE address AS OBJECT (
  2    street_1      VARCHAR2(40),
  3    street_2      VARCHAR2(40),
  4    city          VARCHAR2(40),
  5    state_abbr    VARCHAR2(2),
  6    zip_code      VARCHAR2(5),
  7    phone_number  VARCHAR2(10),
  8    MEMBER PROCEDURE ChangeAddress (
  9      st_1 IN VARCHAR2, st_2 IN VARCHAR2, cty IN VARCHAR2,
 10      state IN VARCHAR2, zip IN VARCHAR2),
 11    MEMBER FUNCTION getStreet (line_no IN number) RETURN VARCHAR2,
 12    MEMBER FUNCTION getCity RETURN VARCHAR2,
 13    MEMBER FUNCTION getStateAbbr RETURN VARCHAR2,
 14    MEMBER FUNCTION getPostalCode RETURN VARCHAR2,
 15    MEMBER FUNCTION getPhone RETURN VARCHAR2,
 16    MEMBER PROCEDURE setPhone (newPhone IN VARCHAR2)
 17  );
 18  /

Type created.

SQL>
SQL>
SQL> CREATE OR REPLACE TYPE BODY address AS
  2    MEMBER PROCEDURE ChangeAddress (
  3      st_1 IN VARCHAR2, st_2 IN VARCHAR2, cty IN VARCHAR2,
  4      state IN VARCHAR2, zip IN VARCHAR2) IS
  5    BEGIN
  6      IF (st_1 IS NULL) THEN
 18       RAISE_application_error(-20001,'The new Address is invalid.');
 19      ELSE
 20        street_1 := st_1;
 21        street_2 := st_2;
 22        city := cty;
 23        state_abbr := upper(state);
 24        zip_code := zip;
 25      END IF;
 26    END;
 27
 28    MEMBER FUNCTION getStreet (line_no IN number)
 29      RETURN VARCHAR2 IS
 30    BEGIN
 31      IF line_no = 1 THEN
 32        RETURN street_1;
 33      ELSIF line_no = 2 THEN
 34        RETURN street_2;
 35      ELSE
 36        RETURN ' ';  
 37      END IF;
 38    END;
 39
 40    MEMBER FUNCTION getCity RETURN VARCHAR2 IS
 41    BEGIN
 42      RETURN city;
 43    END;
 44
 45    MEMBER FUNCTION getStateAbbr RETURN VARCHAR2 IS
 46    BEGIN
 47      RETURN state_abbr;
 48    END;
 49
 50    MEMBER FUNCTION getPostalCode RETURN VARCHAR2 IS
 51    BEGIN
 52      RETURN zip_code;
 53    END;
 54
 55    MEMBER FUNCTION getPhone RETURN VARCHAR2 IS
 56    BEGIN
 57      RETURN phone_number;
 58    END;
 59
 60    MEMBER PROCEDURE setPhone (newPhone IN VARCHAR2) IS
 61    BEGIN
 62      phone_number := newPhone;
 63    END;
 64  END;
 65  /

Type body created.

SQL>
SQL> CREATE OR REPLACE TYPE appartment AS OBJECT (
  2    BldgName          VARCHAR2(40),
  3    BldgAddress       address,
  4    BldgMgr           INTEGER,
  5    MEMBER PROCEDURE  ChangeMgr (NewMgr IN INTEGER),
  6    ORDER MEMBER FUNCTION Compare (OtherAppartment IN appartment)
  7        RETURN INTEGER
  8    );
  9  /

Type created.

SQL>
SQL> CREATE OR REPLACE TYPE BODY appartment AS
  2    MEMBER PROCEDURE  ChangeMgr(NewMgr IN INTEGER) IS
  3      BEGIN
  4        BldgMgr := NewMgr;
  5      END;
  6
  7    ORDER MEMBER FUNCTION Compare (OtherAppartment IN appartment)
  8    RETURN INTEGER IS
  9        BldgName1     VARCHAR2(40);
 10        BldgName2     VARCHAR2(40);
 11      BEGIN
 12        BldgName1 := upper(ltrim(rtrim(BldgName)));
 13        BldgName2 := upper(ltrim(rtrim(OtherAppartment.BldgName)));
 14
 15        IF BldgName1 = BldgName2 THEN
 16          RETURN 0;
 17        ELSIF BldgName1 < BldgName2 THEN
 18          RETURN -1;
 19        ELSE
 20          RETURN 1;
 21        END IF;
 22      END;
 23  END;
 24  /

Type body created.

SQL>
SQL> CREATE TABLE appartments OF appartment;

Table created.

SQL>
SQL> set echo on
SQL>
SQL> INSERT INTO appartments values (appartment('Building',address('2 Square',' ','Lansing','MI','48823',' '),597));

1 row created.

SQL> INSERT INTO appartments values (appartment('East Storage Shed',address('1 Rd','','Lansing','MI','48823',''),598));

1 row created.

SQL> INSERT INTO appartments values (appartment('Headquarters Building',address('1 Jeff','','Detroit','MI','48226',''),599));

1 row created.

SQL>
SQL> SELECT * from appartments;

BLDGNAME
----------------------------------------
BLDGADDRESS(STREET_1, STREET_2, CITY, STATE_ABBR,
--------------------------------------------------
   BLDGMGR
----------
Building
ADDRESS('2 Square', ' ', 'Lansing', 'MI', '48823',
 ' ')
       597

East Storage Shed
ADDRESS('1 Rd', NULL, 'Lansing', 'MI', '48823', NU
LL)
       598

Headquarters Building
ADDRESS('1 Jeff', NULL, 'Detroit', 'MI', '48226',
NULL)
       599


3 rows selected.

SQL>
SQL> drop table appartments;

Table dropped.

SQL>
SQL> drop type appartment;

Type dropped.

SQL> --

 








Related examples in the same category

1.Create an object table and insert value by using the object constructor
2.Create instance of nested user-defined type