[rules-users] To insert facts or use the find clause?

[Anstis, Michael (M.)]

Don't ask me to explain why but the Drools team always recommend flattening
hierarchies before inserting into WM ;-) 

I *think* this allows for individual facts' properties to be indexed in the
RETE network thus affording a performance increase.

I guess there's also implications to do with truth maintenance whereby
objects accessed using "from" should be time-constant.

My 2c's worth; I'm sure Edson, Mark, Michael et al will elaborate.

Cheers,

Mike

-----Original Message-----
From: rules-users-bounces at lists.jboss.org
[mailto:rules-users-bounces at lists.jboss.org] On Behalf Of Raffi
Khatchadourian
Sent: 18 April 2008 02:34
To: rules-users at lists.jboss.org
Subject: [rules-users] To insert facts or use the find clause?

I would like to use Drools to reason about a graph structure using
queries. The graph consists of a collection of nodes, which in turn each
have a collection of edges to nodes. Currently, I have a single fact in
the Drools working memory, the graph. My queries then use the "from"
clause to obtain information about the nodes and edges within the graph.
I was wondering if it would be better to instead traverse the entire
structure adding each node and edge as facts into the working memory.
Any ideas? Thanks!
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