Assuming TYPE_1 is the opposite of TYPE_2 and not just a difference it should work.

What is "opposite" is perhaps difficult to define as there is probably some semantics involved: up\down, left\right, yes\no.

These have well defined meanings and hence we can say with some certainty that these are opposites or one and other.

On 25 May 2012 14:07, Ben Cuthbert <bencuthbert@ymail.com> wrote:
All

If I have an object say 

class TestObject {
private String type;
private String name;
}

And I want to match opposite types so I fire in the following

insert(new TestObject("TYPE_1", "This is our type 1 object");
insert(new TestObject("TYPE_2", "This is our type 1 object");

So I want to say only match again opposite types

would this work?

rule "#999 Match"
dialect "mvel"
when
    $incoming : TestObject($type: type)
    $current : TestObject( type != $type)
then
    insert(new String("LOGGING: incoming:" + $incoming.getType() + " current:" + $current.getType() ));
end


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