<font size="2"><font face="verdana,sans-serif">Hi there,<br></font></font><div><font class="Apple-style-span" face="verdana, sans-serif"><br></font></div><div><font class="Apple-style-span" face="verdana, sans-serif">Thanks for replying. I will try to explain my current challenge a bit further:</font></div>
<div><font class="Apple-style-span" face="verdana, sans-serif"><br></font></div><div><font class="Apple-style-span" face="verdana, sans-serif">I have a ruleset which is sent by an external application in XML format. I load it to a new knowledge package and then into a knowlegde base. It is made of smaller subsets of 3 rules each (a "set" rule, a "reset" rule and a "clear" rule) that control my application's internal logic, which must be stateful and kept on disk (basically, there are 2 important hashmaps).</font></div>
<div><font class="Apple-style-span" face="verdana, sans-serif"><br></font></div><div><font class="Apple-style-span" face="verdana, sans-serif">Whenever the rules change, a new XML ruleset is sent and my application restarts and loads the new file the exact same way. However, I need to resume the application state (as it was before the restart). I also have to do this selectively, because I only care about the application state on a per-rule basis:</font></div>
<div><font class="Apple-style-span" face="verdana, sans-serif"><br></font></div><div><font class="Apple-style-span" face="verdana, sans-serif">- If a rule keeps the same LHS, I need to resume the application state before restart regarding that rule;</font></div>
<div><font class="Apple-style-span" face="verdana, sans-serif">- If a rule has been modified, I may discard the state regarding that rule (do not need to load it);</font></div><div><font class="Apple-style-span" face="verdana, sans-serif"><br>
</font></div><div><font class="Apple-style-span" face="verdana, sans-serif">I don't think I can refactor this problem into smaller ones, the application internal logic is indeed complex I'm afraid. The rules are analyzed in a stateless way BUT they control a set of critical information which must be stateful (beyond restarts). There is a (not-so-direct) correspondence between each (fire, reset, clear) rule subset and the information that keeps track of the internal state, so that's why I need to verify rule-by-rule what has changed between restarts.</font></div>
<div><font class="Apple-style-span" face="verdana, sans-serif"><br></font></div><div><font class="Apple-style-span" face="verdana, sans-serif">I hope this helps to describe the problem.</font></div><div><font class="Apple-style-span" face="verdana, sans-serif">Thanks again for reading. Any help is greatly appreciated.</font></div>
<div><font class="Apple-style-span" face="verdana, sans-serif"><br></font></div><div><font class="Apple-style-span" face="verdana, sans-serif">_ miguel, PT</font></div><div><font class="Apple-style-span" face="verdana, sans-serif"><br>
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</font></div><div><font class="Apple-style-span" face="verdana, sans-serif"><br></font><div class="gmail_quote">2011/8/26 Swindells, Thomas <span dir="ltr"><<a href="mailto:TSwindells@nds.com">TSwindells@nds.com</a>></span><br>
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<p class="MsoNormal"><span style="font-size:11.0pt;color:#1F497D">Can you share what you actual requirement is and why you need to do it?<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;color:#1F497D">Can you perhaps change the problem into one that is simpler to solve?<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;color:#1F497D">Ie rather than comparing knowledge bases can you get the input to these knowledgebases?<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;color:#1F497D">Can you control what that input is, if it is a DSL or a spreadsheet then your comparision job will probably become a lot simpler.<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;color:#1F497D"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;color:#1F497D">Thomas<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;color:#1F497D"><u></u> <u></u></span></p>
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<p class="MsoNormal"><b><span style="font-size:10.0pt">From:</span></b><span style="font-size:10.0pt"> <a href="mailto:rules-users-bounces@lists.jboss.org" target="_blank">rules-users-bounces@lists.jboss.org</a> [mailto:<a href="mailto:rules-users-bounces@lists.jboss.org" target="_blank">rules-users-bounces@lists.jboss.org</a>]
<b>On Behalf Of </b>miguel machado<br>
<b>Sent:</b> 26 August 2011 13:01<br>
<b>To:</b> Rules Users List<br>
<b>Subject:</b> Re: [rules-users] Rule one-by-one comparison<u></u><u></u></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt">Esteban,</span><u></u><u></u></p>
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<p class="MsoNormal"><span>Thank you very much for that. I will look into it.</span><u></u><u></u></p>
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<p class="MsoNormal"><span>Any other ideas, anyone?</span><u></u><u></u></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal"><span>_ miguel</span><u></u><u></u></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal">2011/8/26 Esteban Aliverti <<a href="mailto:esteban.aliverti@gmail.com" target="_blank">esteban.aliverti@gmail.com</a>><u></u><u></u></p>
<p class="MsoNormal">You can try to use drools-verifier. This project basically lets you define rules about your rules. <u></u><u></u></p>
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<p class="MsoNormal">You can have a look at its tests to see how it works.<u></u><u></u></p>
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<p class="MsoNormal">You can get more info about drools-verifier here: <a href="http://community.jboss.org/wiki/DroolsVerifier" target="_blank">
http://community.jboss.org/wiki/DroolsVerifier</a><u></u><u></u></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal">And here you can see how are we using drools-verifier inside Guvnor: <a href="http://ilesteban.wordpress.com/2010/04/05/guvnors-field-constraints/" target="_blank">http://ilesteban.wordpress.com/2010/04/05/guvnors-field-constraints/</a> <u></u><u></u></p>
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<p class="MsoNormal">Best Regards,<u></u><u></u></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><br>
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX<br>
<br>
Esteban Aliverti<br>
- Developer @ <a href="http://www.plugtree.com" target="_blank">http://www.plugtree.com
</a><br>
- Blog @ <a href="http://ilesteban.wordpress.com" target="_blank">http://ilesteban.wordpress.com</a><br>
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<u></u><u></u></p>
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<p class="MsoNormal">2011/8/26 miguel machado <<a href="mailto:mls.machado@gmail.com" target="_blank">mls.machado@gmail.com</a>><u></u><u></u></p>
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<p class="MsoNormal"><span style="font-size:10.0pt">Hi there everybody,<br clear="all">
</span><u></u><u></u></p>
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<p class="MsoNormal"><span>I need to perform rule comparison on a project I'm working on using drools expert 5.0. For a specific feature implementation, I have two different knowledge bases with several rules which
I need to compare, one by one. By comparing, I mean "inspect" certain conditions within the LHS.</span><u></u><u></u></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal"><span>Currently, I'm able to obtain several attributes from rules (org.drools.rule.Rule), such as the agenda-group and the rule name and a few others, but I haven't been able to do it all. Going
deeper, there is LiteralConstraint (for simple conditions) which I can parse and obtain data. However, I don't know how to do it for OR-conditions, which I guess represents a MultiRestrictionFieldConstraint. Perhaps there is another way?</span><u></u><u></u></p>
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<p class="MsoNormal"><span>I know this may seem like a very unorthodox thing to do, but I don't think there is a better way of comparing knowledge packages (except for full text comparison). Is there?</span><u></u><u></u></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal"><span>Thanks in advance,</span><u></u><u></u></p>
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<p class="MsoNormal"><span>_ miguel, PT</span><u></u><u></u></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal"><span style="color:#888888"><u></u> <u></u></span></p>
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<p class="MsoNormal"><span style="color:#888888">-- <u></u><u></u></span></p>
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<p class="MsoNormal"><span style="color:#888888">"To understand what is recursion you must first understand recursion"<u></u><u></u></span></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal">-- <u></u><u></u></p>
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<p class="MsoNormal">"To understand what is recursion you must first understand recursion"<u></u><u></u></p>
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