XSQL and Packaged Procedure

Question

I've been reading thru the postings for XSQL and read a couple of references on how to get an out variable from a stored procedure. I read this thread from 3/31:
http://technet.oracle.com:89/ubb/Forum11/HTML/001444.html
Anyway, I followed the advice and I get the following error message:
ORA-06571: Function CHECK_USER does not guarantee not to update database
Did some research and found that I would need to create a PRAGMA in my function, which would need to be packaged. I did that, but the function would not compile because it would not fulfil the pragma. Below is the procedure I am trying to run, the wrapper function, and the XSQL source. Any ideas?
Thanks
Procedure
Procedure check_user( inSiteID varchar2,
v_userid number default null,
inExtID varchar2 default null,
v_return out varchar2)
AS
ParamIsNull EXCEPTION;
invalid_data EXCEPTION;
v_errmsg varchar2(200);
v_count number := 0;
BEGIN
If v_userid Is Null AND inExtID Is Null Then Raise ParamIsNull; End If;
If v_userid Is Not Null AND inExtID Is Not Null Then Raise ParamIsNull; End If;
If v_userid Is Not Null Then
SELECT COUNT(1) INTO v_count FROM USERS WHERE site_id=inSiteID and USERID = v_userid;
If v_count = 0 then
v_errmsg := '0, UserID Not Found';
raise invalid_data;
Else
v_return:=('1');
End if;
End If;
If inExtID Is Not Null Then
SELECT COUNT(1) INTO v_count FROM USERS WHERE site_id=inSiteID and ext_uid = inExtID;
If v_count = 0 then
v_errmsg := '0, External ID Not Found';
raise invalid_data;
Else
v_return:=('1');
End if;
End If;
EXCEPTION
WHEN ParamIsNull THEN
v_return:=('0,1 Parameter Expected');
WHEN invalid_data THEN
v_return:=v_errmsg;
END check_user;
Function
CREATE OR REPLACE PACKAGE DON AS
FUNCTION CHECK_USER (siteid IN VARCHAR2, userid IN NUMBER, extid IN VARCHAR2)
RETURN VARCHAR2;
PRAGMA RESTRICT_REFERENCES (CHECK_USER, WNDS);
END DON;
CREATE OR REPLACE PACKAGE BODY DON AS
FUNCTION CHECK_USER (siteid IN VARCHAR2, userid IN NUMBER, extid IN VARCHAR2)
RETURN VARCHAR2 IS v_return VARCHAR2(200);
BEGIN
OTS_SCOPUS_PACK.CHECK_USER(siteid, userid, extid, v_return);
RETURN v_return;
END;
END DON;
XSQL Source
<?xml version="1.0"?>
<xsql:query xmlns:xsql="urn:oracle-xsql" connection="mvdv">
select don.check_user('{@siteid}', {@userid}, '{@extid}') from dual
</xsql:query>

Answer 1

Your 'DON.CHECK_USER' function has a RESTRICT_REFERENCES pragma but it calls 'OTS_SCOPUS_PACK.CHECK_USER' which must also have a RESTRICT_REFERENCES pragma.
All functions/procedures that are called directly or indirectly by 'DON.CHECK_USER' need to have a RESTRICT_REFERENCES pragma to guarantee that they do not write to the database or to a package.
You cannot just write a wrapper function and apply the pragma to it.
Good luck!
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