[rules-users] FROM and the working memory

David Boaz davidb at dbmotion.com
Tue Aug 19 01:36:30 EDT 2008


Hi all,

in the drools manual (6.5.28): "FROM allows the engine to reason over data
not in the working memory". 
Will drools use rete to evaluate patterns with a FROM source?

Lets assume the following rule: 
WHEN p:Person(age>60), Address(city="NY") FROM p.addresses
will the rule engine match the Address pattern using rete? 

and, what about the following rule:
when p:Person(age="m"), Person(age>60) from p
1) will it work?
2) will the age constraint be matched using rete?

Thanks, David
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