On 1 March 2012 16:21, shawn <span dir="ltr"><<a href="mailto:youngxiao121@hotmail.com">youngxiao121@hotmail.com</a>></span> wrote:<br><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
I don't understand the garbage collection mechanism in drool, though I have<br>
read the expert documentation.<br></blockquote><div>There is no specific "garbage collection" by Drools - Java's GC does the trick.</div><div><br></div><div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
1 - how to retract a global variable in drool?<br></blockquote><div>You don't "retract", you can set it to null, same way as set to an object.</div><div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
2 - how to retract all the facts that have been inserted into the working<br>
memory?</blockquote><div>Several ways, simple is to use KnowledgeSession's getFactHandles, and retract them.</div><div><br></div><div>Or dispose the entire Session, and create another one, which might be faster.</div>
<div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"> If I use halt(), does it retract all facts in the working memory and<br>
stop the all the rules?<br></blockquote><div>No. Yes.</div><div>-W </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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