I think what you are trying to achieve requires some careful planning. If
you use the repository, you have a versioned rule base that make sure you
don't lose your working memory.
Although, without the repo, only thing I can think of is you making sure
your application always loads the wm into memory, perform the rules
replacement (adding/removing rules), so the working memory gets properly
updated, and then serializes your wm back to the database.... did you tried
2007/6/14, Daniel E Chapman <dechapma(a)us.ibm.com>:
We found a problem with the interaction of a serialized working memory and
updates to the rules.
Our process involves serializing the working memory to a database. Later,
when we load the serialized version of the working memory back from the
database, if we've updated the rules it will detect that fact and it will
throw away our carefully preserved working memory. We suspect this is
because the working memory maintains a reference to the rules as they were
when the working memory is originally serialized.
I'm wondering if there is some way to accomplish what we're trying to do,
either a way to serialize the working memory with no reference to the rules
or some way to have the working memory update to accomodate any changes to
the rules that may have occurred since it was serialized.
I know that some other rules engines, such as FairIsaac's Blaze engine,
have complex schemes where you can have versioned rules in a repository and
update the rules in that fashion. I'm not sure that we're trying to do
anything quite so complex, just a way to occasionally push out a new version
of our rules without having to lose all of the work we've done to the
working memory in the past.
(There may come a time where we may intend for the working memories to be
cleared out, but I think we can do that in a manual fashion when the time
Thanks for your time, hopefully there's an easy answer!
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