<br> Leonardo, <br><br> First, I believer there is a misconception in your reasoning: creating sessions is supposed to be much much cheaper than retracting all facts. Creating a rulebase is heavier, because it requires compilation, but creating a session is supposed to be very light by design. So, first thing you should do is change that.<br>
<br> Regarding your question, if you insert:<br><br>SiteLanguage(language : languageCode)<br> t : SiteSpecialServiceType(type : specialServiceType)<br><br> The rule will activate and fire. If you don't, then the rule will not match. That is how it is supposed to work.<br>
<br> Edson<br><br><div class="gmail_quote">2009/11/17 Leonardo Gomes <span dir="ltr"><<a href="mailto:leonardo.f.gomes@gmail.com">leonardo.f.gomes@gmail.com</a>></span><br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
Hi Guys,<br><br>I have the following situation while running a stateful session with Drools 4.0.7:<br><br>- I want to test that a fact with a given state doesn't exist;<br>- It works fine<br>- At a certain point I have to retract all facts and reinsert them at the stateful session - some of them actually changed and I don't want to recreate the session b/c it's expensive<br>
- Again the fact that didn't exist when I first created the session still doesn't exist<br><br>** Problem: This time the rule that verified the non-existence is not fired because I didn't insert any fact that would retrigger it.<br>
<br>Rule example:<br><br> rule "022"<br><br> when<br><br> SiteLanguage(language : languageCode)<br> t : SiteSpecialServiceType(type : specialServiceType)<br> not SiteLanguageSpecialServiceType(specialServiceType == type, languageCode == language)<br>
then<br> <<consequence>><br>end<br><br>How could I solve or workaround that?<br><br><br>Thanks in advance,<br>Leo.
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<br></blockquote></div><br><br clear="all"><br>-- <br> Edson Tirelli<br> JBoss Drools Core Development<br> JBoss by Red Hat @ <a href="http://www.jboss.com">www.jboss.com</a><br>