How do i call a function in a library package in a form 6i ?

Question

Hi guys can any help me ?
This is the decalred part of my function in the package specification named SECURITY_NEW:
==================================================
FUNCTION LOGON_AUTH ( P_user_id IN users_codes.USE_ID%TYPE,
P_password IN users_codes.use_pass%TYPE,
P_allow OUT BOOLEAN )
RETURN BOOLEAN;
i called it in a form like that:
====================
SECURITY_NEW.LOGON_AUTH ( V_USER_ID ,
V_PASSWORD ,
V_EXIST );
This gives me error LOGON_AUTH is not a procedure or is undefined
can any help me in calling the function..?
Thanks in advance..
Abdetu.
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Answer 1

oh, overseen the other problem:
PL/SQL variables can be accessed like this
V_VALUE := 'TEST';
if V_VALUE = 'TEST' then
the parameters of the procedure/function can also be accessed like this (note: don't forget the restrictions of IN/OUT/IN OUT)
global variables, forms-parameters, items can be accessed via copy, name_in and default_value
e.g.:
default_value('TEST', 'global.testvariable')
initializing :global.testvariable with 'TEST' if it is not initialized; if :global.testvriable has already a value, this will not set the value of the variable
to set the global variable, you use the copy just like the default_value built in:
copy('TEST2', 'global.testvariable')
if you apply now another default_value call, this call results in no change of the variable:
default_value('TEST', 'global.testvariable')
the variable :global.testvariable is still at the value 'TEST2'
to access it, you use the name_in built in:
if name_in('global.testvariable') = 'TEST2' then
this also works for forms-parameters and items:
name_in('parameter.test')
or
name_in('block3.item4');
so in your case, it seems that you are trying to assign an IN variable...that's not possible.
e.g.:
procedure testproc(ibBoolValue in boolean) is
begin
ibBoolValue := false;
end;
=> this is resulting in an error, as you try to assign a value to an in-parameter...
procedure testproc(obBooleanValue out boolean) is
begin
obBoolValue := false;
end;
=> this works; but as this is an out-parameter calls like:
testproc(true); will not work, as "false" cannot be used as an assigment target...
try this:
declare
bBool boolean;
begin
bBool := true;
testproc(bBool);
end;
=> this will work, but as it is an out parameter, the boolean value will be set to null when entering the procedure, and after the procedure bBool will be false.
last case IN OUT:
procedure testproc(iobBooleanValue in out boolean) is
begin
iobBooleanValue := nvl(iobBooleanValue, false);
if iobBooleanValue then
iobBooleanValue := false:
else
iobBooleanValue := true;
end;
when calling like this:
declare
bBoolVal boolean;
begin
bBoolVal := false;
testproc(bBoolVal);
end;
bBoolVal will be true after the call of testproc and vice versa when bBoolValue is true
also like in the OUT parameter Sample, calls like:
testproc(true);
will result in a compile-error, as "true" is also no target...
so everything shortly:
if you want to access forms-parameters, globals or items, use copy, name_in, default_value (as in librarys :block3.item4 := 'asdf'; will result in an error)
if you want to access variables it's just straight like in forms-packages...
Just take a look at the Online-Help; this is all well-documented.
regards
Christian