| Object type [message #37781] |
Thu, 28 February 2002 01:28  |
roberto
Messages: 10
Registered: February 2002
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Junior Member |
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This is my object:
TYPE Bank_Account AS OBJECT (
acct_number INTEGER(5),
balance REAL,
status VARCHAR2(10),
MEMBER PROCEDURE open (amount IN REAL),
MEMBER PROCEDURE verify_acct (num IN INTEGER),
MEMBER PROCEDURE close (num IN INTEGER, amount OUT REAL),
MEMBER PROCEDURE deposit (num IN INTEGER, amount IN REAL),
MEMBER PROCEDURE withdraw (num IN INTEGER, amount IN REAL),
MEMBER FUNCTION curr_bal (SELF IN OUT Bank_Account,num IN INTEGER) RETURN REAL
);
---
TYPE BODY Bank_Account AS
MEMBER PROCEDURE verify_acct (num IN INTEGER) IS
-- check for wrong account number or closed account
BEGIN
IF (num <> acct_number) THEN
RAISE_APPLICATION_ERROR(-20105, 'wrong number');
ELSIF (status = 'closed') THEN
RAISE_APPLICATION_ERROR(-20106, 'account closed');
END IF;
END verify_acct;
MEMBER FUNCTION curr_bal (SELF IN OUT Bank_Account, num IN INTEGER) RETURN REAL IS
BEGIN
verify_acct(num);
RETURN balance;
END curr_bal;
END;
---
from sql plus...
declare
a bank_account;
b real;
begin
a:=bank_account(1,1,'xx');
b:=a.curr_bal(a,1);
end;
declare
*
ERROR at line 1:
ORA-06550: line 7, column 4:
PLS-00306: wrong number or types of arguments in call to 'CURR_BAL'
ORA-06550: line 7, column 1:
PL/SQL: Statement ignored
which is the error?
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| Re: Object type [message #37785 is a reply to message #37781] |
Thu, 28 February 2002 03:20  |
pratap kumar tripathy
Messages: 660
Registered: January 2002
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Senior Member |
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hi,
instead of
b:=a.curr_bal(a,1);
use
b:=a.curr_bal(1);
-----------
declare
a bank_account;
b real;
begin
a:=bank_account(1,1,'xx');
b:=a.curr_bal(1);
end;
--------
cheers
pratap
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| Re: Object type [message #37788 is a reply to message #37781] |
Thu, 28 February 2002 03:58 |
pratap kumar tripathy
Messages: 660
Registered: January 2002
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Senior Member |
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Member functions, by default, pass the self parameter as an IN parameter.
when you try to change the value of the object within the function or u want to call the member procedure , then u have specify IN OUT
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