There are two essentially different design patterns for using a production<br>rule system.<br><br>Both begin with session creation and the insertion of zero or more<br>facts meant to stay (more or less) til the end.<br><br>
The first one is using a cycle (of one or more repeats) of the sequence<br> - insert some more (I call them: "trigger") facts<br> - call fireAllRules() to let the engine process what is there, in a ripple<br> through ensuing rule firings, inserts, retracts and modifications, until<br>
everything turns quiet; then this call returns.<br><br>The second one calls fireUntilHalt(), in a thread of its own, while other<br>threads react, over time, to external data sources, to insert other facts,<br>with the engine reacting all the time. WorkingMemory.halt() must be<br>
called to let this second call return.<br><br>No rules fire unless one of these two calls is active.<br><br>-W<br><br><br><div class="gmail_quote">On Mon, Jan 25, 2010 at 7:03 PM, ben780 <span dir="ltr"><<a href="mailto:ben.craig2@gmail.com">ben.craig2@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"><br>
Hi,<br>
<br>
I'm also confused as well on the same topic as well. I when I do an insert<br>
or update from rules, the rules are re-evaluated.<br>
<br>
When i do an insert or update from java code it does not re-evaluate the<br>
rules. However, when I call fireAllRules it does fire the rules as expected<br>
based on the inserted/updated objects.<br>
<br>
Regards,<br>
<br>
Ben<br>
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