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@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
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--
Enda J Diggins