[rules-users] using variables in eval

[Wolfgang Laun]

You cannot assign a value to a bound variable. $c is *bound to *the field
name of a PassThrough fact object.

Assigning values to regular variables can only be done in the consequence,
e.g.,

then
   String s = hello("r");
   ...
end

You can use the modify statement (in the consequence) to change a field of
some fact object.

-W

On 21 October 2011 11:46, rahulkrishnan <rahulkrishnan8 at gmail.com> wrote:

> Hi
>
> 1.i have a rule like this
> rule "Function Call"
> dialect "mvel"
>        when
>                PassThrough( $c : name)
>                eval(($c = hello("rahul"))!=null)
>        then
>                System.out.println($c);
>
> end
>  in this my function will return the string as capital and am entering to
> the consequence part but the $c is printed as null. am not getting what is
> happend.
>
> And if i want to assign the result of function call to a String declared as
> (String s) how can it be done
>
>
> --
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