[rules-users] Question on contains operator with integer

[Enda J Diggins]

Hi,

'contains' works with collections. You can't put primitives into a
collection in java without wrapping them up in a class like Integer, Long,
Short, etc.

http://java.sun.com/j2se/1.5.0/docs/guide/language/autoboxing.html

Cheers,
Enda

On Wed, Mar 10, 2010 at 9:08 PM, cwolfinger <chase.wolfinger at gmail.com>wrote:

>
> Hello - I have a question on how to a contains operation with primitive
> values.  What I have is a message that has a field called intTest that is a
> List<Integer>.  If i do an intTest contains 4 check, then check compiles
> but
> it never matches.  However if I do an eval it does work.  Does anyone know
> how to use a primitive in a contains.
>
>
> Here is a sample of the rule:
>
> package com.sample
>
> import com.sample.DroolsTest.Message;
>
> rule "Test" salience 9999
>        #when Message( eval(intTest.contains(Integer.valueOf(4))))
>        when Message( intTest contains 4)
>        then
>        System.out.println("Found 4");
> end
> --
> View this message in context:
> http://n3.nabble.com/Question-on-contains-operator-with-integer-tp440559p440559.html
> Sent from the Drools - User mailing list archive at Nabble.com.
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-- 
Enda J Diggins
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