Using variant parameter with var check

Cem_Karaer · 2012-11-21

Hello,

I want to create a generic function that will accept any type of variable as a first parameter and a text variable parameter. The text parameter will be tried to be evaluated to the type of the first parameter.

For example:
TestFunction(DateVariable,'13.02.2012')

DateVariable should be set to 13022012D

TestFunction(IntegerVariable,'345')

IntegerVariable should be set to 345

ect..

For this I defined the first parameter as variant and worked as desired. But because it is not a var variable, I cannot get the evaluated value outside TestFunction. So I defined it as var, but NAV wants only variant type in this case.

Is it a solvable problem or restrictions of NAV prevent such a generic functionality?

kriki · 2012-11-21

Something like this:

CASE TestFunction('13.45') of
  'DECIMAL': SomeDecimal := ResultFunctionDecimal();
  'INTEGER': SomeInteger := ResultFunctionInteger();
  ...
END;

In TestFunction you have something like

FUNCTION TestFunction(...)
BEGIN
  ...
  DecimalValue := ....; //DecimalValue is a GLOBAL variable
END;

FUNCTION ResultFunctionDecimal()
BEGIN
  EXIT(DecimalValue);
END;

MarkHamblin · 2012-11-21

Could use the "original" variant data type - a string

Something like:

TestFunction(MyVar : Variant) : Text[200]
BEGIN
  ... do stuff with variant ...

  EXIT(FORMAT(MyVar));
END;

// call function like:
EVALUATE(MyInt, TestFunction(1234));
EVALUATE(MyText, TestFunction('Some Text'));

// or
MyInt := 1234;
EVALUATE(MyInt, TestFunction(MyInt));
... etc.

David_Singleton · 2012-11-22

Just use a FilterField in a table of the correct type, it will correctly evaluate text to the required format.

Using variant parameter with var check

Comments

Categories