Re: [rules-users] Using Enumeration for long lists
How complex are the blacklist rules that you are planning to have?
From what you have described it sounds like it is just
substring/startswith matches?
If this is the case then you may be better just to
query lucene or the database
directly as you'll result in a very flat extremely wide graph that drools isn't
going
to be able to optimize at all - it will basically just iterate over every string doing
the
string comparison.
Lucene/the database are likely to be much more optimized and efficient for this.
If on the other hand your blacklist logic is much more complicated, taking into
account multiple criteria such as username, time of day, source ip address,
phase of the moon etc then drools may be easier to optimize development
speed and maintainance,.
Thomas
-----Original Message-----
From: rules-users-bounces(a)lists.jboss.org [mailto:rules-users-
bounces(a)lists.jboss.org] On Behalf Of lansyj
Sent: 05 July 2011 09:39
To: rules-users(a)lists.jboss.org
Subject: [rules-users] Using Enumeration for long lists
Hi,
We are planning to use Drools for a Blacklist validation logic which requires us
to manage very long list (could be tens of thousands of IDs).
Can we use the native Drools enumeration for this? Would this be an optimal
implementation?
The other option we were thinking of was to have a list managed separately
in our core application and have in lucene indexed such that Drools rule
checks against the index. But, as you can see, it creates a lot of development
as well as maintenance overhead.
Thanks in advance for any tips on this topic.
Best Regard
-lj
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