[rules-users] How to make the working memory "clean"?

[Wolfgang Laun]

On 1 March 2012 23:10, shawn <youngxiao121 at hotmail.com> wrote:

> Thank you very much~
> 1- You don't "retract", you can set it to null, same way as set to an
> object.
> Is it in java or in drool?

...? It's a Java object, made visible to DRL code.


> If I understand correct, global variable is not
> really inserted into the working memory,right?

Yes.


> Global just ensure drool can
> see the variable?
>
Yes.


> 2-Several ways, simple is to use KnowledgeSession's getFactHandles, and
> retract them. Or dispose the entire Session, and create another one, which
> might be faster.
> You mean the working memory belongs to the Session not knowledgeBase?
>
Yes.

> Because I have to keep the knowledgebase running all the time, I have to
> ensure each fire() don't leave any useless facts in the working memeory.

Now you know how to.
-W

>


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