[rules-users] compare string and int in LHS

[Anstis, Michael (M.)]

You could use an inline eval too.

The problem possibly lies more with your model; why not have one subclass
expose the String property and another the Integer property and code the
rules using the subclasses? Much safer throughout the entire application
than having to worry whether some field is meant to be a string or number
(It's very easy to question problems though - there could be very good
reason why you need the model "as is").

-----Original Message-----
From: rules-users-bounces at lists.jboss.org
[mailto:rules-users-bounces at lists.jboss.org] On Behalf Of brenner
Sent: 08 February 2008 12:33
To: rules-users at lists.jboss.org
Subject: Re: [rules-users] compare string and int in LHS


Hi,

I have found a solution, but I don't know that it is the best:
My solution:

I have extend my Class with a method which returns the string as a integer.
And my rule is like this:

i : Integer( intValue <= 1) from $test.getValue(Test.VALUE_TYP_INTEGER);

Is that the only/best solution. 
Can't I convert Strings to Integer on the LHS of a rule?

greeting
Daniel




brenner wrote:
> 
> Hi,
> 
> I have a class, wich contains a string value. This value is in some use
> cases an integer. 
> For this use case I want to convert (parse) the string typ to an integer
> because I want that the following rule matches: 
> 
> rule
>   when
>     t : Test(value <= 1)
>   then
>     System.out.println(t)
> end
> 
> 
> class Test {
>    
>    String value;
> 
>    getValue();
>    setValue();
> 
> }
> 
> Have anyone a solution or some help for me?
> Is that possible what I want to do?
> 
> Thanks
> Daniel
> 

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