'from' uses MVEL for its expressions, so for Qs like that consult the
MVEL guide, also you can do jira requests for features like that.
Mark
Sam wrote:
When using the new 'from' feature, does Drools handle null values correctly?
For example, let's say I have a rule like this:
rule check
when
Integer() from helper.getId();
then
...
end
I tried returning null from getId(), but it caused Drools to throw an exception.
So what I'm currently doing is have getId() return a collection, which may be
empty. In this case Drools handles it without problem. Is there a better way
to do this? I just don't want to wrap everything in a collection.
thanks.
sam
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