Dynamic pl/sql in pro*c/c++

Question

I have a stored procedure to query and will receive a result by it....
I used the dbms_sql package to give name of the table at run-time
then it runs in sql*plus well...
but If i called it in pro*c/c++, it would not return result...
This is my examples..
(1) stored procedure
CREATE OR REPLACE PACKAGE XDMS_STORE_PKG
IS
PROCEDURE isExistInstance(table_name IN VARCHAR2, url IN VARCHAR2, num OUT N
UMBER);
END XDMS_STORE_PKG;
CREATE OR REPLACE PACKAGE BODY XDMS_STORE_PKG IS
PROCEDURE isExistInstance (table_name IN VARCHAR2, url IN VARCHAR2, num OUT NUMBER)
IS
cursor1 integer;
rows_processed integer;
tmp NUMBER;
tmp_char VARCHAR2(10);
BEGIN
cursor1 := dbms_sql.open_cursor;
dbms_sql.parse (cursor1, 'SELECT count(*) FROM ' | | table_name | | ' WHERE DocURL = ' | | ':x', dbms_sql.v7);
dbms_sql.bind_variable(cursor1, 'x', url);
dbms_sql.define_column (cursor1, 1, tmp);
rows_processed := dbms_sql.execute (cursor1);
loop
if dbms_sql.fetch_rows (cursor1) > 0 then
dbms_sql.column_value (cursor1, 1, tmp);
num := tmp;
else
exit;
end if;
end loop;
dbms_sql.close_cursor (cursor1);
EXCEPTION
WHEN OTHERS THEN
dbms_output.put_line(sqlerrm);
if dbms_sql.is_open (cursor1) then
dbms_sql.close_cursor (cursor1);
end if;
END isExistInstance;
END XDMS_STORE_PKG;
(2) In the sqlplus
set serveroutput on;
DECLARE
cnt NUMBER;
dtdid VARCHAR2(10) := 'DT_AAAAC';
url VARCHAR2(200) := 'http://www.ce.cnu.ac.kr/~xdms/data/personnel.xml';
BEGIN
XDMS_STORE_PKG.isExistInstance(dtdid, url, cnt);
dbms_output.put_line(to_char(cnt));
END;
(3) In the pro*c/c++
bool StorageManager::isExistInstance(char *this_url)
EXEC SQL BEGIN DECLARE SECTION;
int count = 0;
char dtdid[6];
char url[200];
EXEC SQL END DECLARE SECTION;
if(isNewDtd) return false;
sprintf(dtdid, "DT_%s", this_dtdid);
strcpy(url, this_url);
EXEC SQL EXECUTE
BEGIN
XDMS_STORE_PKG.isExistInstance(:dtdid, :url, :count);
END;
END-EXEC;
if(count < 1) return false;
else return true;
thanks...
null

Answer 1

This is tough it seems. However here are a few thoughts if they can help:
- Generate(build) a dynamic pl/sql block like :
Begin
Your Procedure Name
End;
keep building this piece of code for each one of your procedures in C or C++. And then execute it as any PL/sql code in the form of a 'constructed' string. Pro*C also has DEscribe Using BInd, but i do not know if that can help.