Paul Houle created DROOLS-675:
Summary: Query Optimization for RHS by changing pattern match order
Issue Type: Enhancement
Affects Versions: 6.2.0.CR3
Reporter: Paul Houle
Assignee: Mark Proctor
I've been using Drools for what I consider "small" semantic databases,
right now in the range of 1M-10M facts but that could get bigger.
One thing I notice is that performance is dependent on the order that I put patterns in
the RHS; if the high selectivity patterns go first I am happy with the results but put
them in the wrong order and gee wiz, I won't wait long enough for it to try all the
matches that fail.
I see Drools as competitive with products such as triple stores, deductive databases and
many of them have this feature
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