Re: [rules-users] Maintaining DB/Working Memory Synchronization
I don't think there's a built in way to do this with drools, but in general this
is done using database triggers. The trigger fires when the data changes, and from there
it's up to you how the record is transported to working memory.
If you use oracle there's a specific mechanism for this called "Database Change
Notification"
--- On Fri, 11/6/09, Daniel Miller <dmiller(a)versatile.com> wrote:
From: Daniel Miller <dmiller(a)versatile.com>
Subject: [rules-users] Maintaining DB/Working Memory Synchronization
To: rules-users(a)lists.jboss.org
Date: Friday, November 6, 2009, 2:43 PM
So I hope that someone out here, or
many of you, can give me some idea
of how you do this.
I have about 20+ entities in my database that I want Drools
to know
about. Obviously my hope is to apply CEP, rules and
processes to
these items. However, I feel like I'm missing some
type of connection
between how Drools recommends keeping my working memory in
sync with
my database changes.
Ideally, I'd love to be able to just update my entities as
I have been
doing in the database, but have those changes automatically
move their
way over into the working memory. How do any of you
recommend I
accomplish this?
Thanks in advance for any suggestions.
Dan Miller
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