<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">I'm considering analyzing the pre-compiled xml document as a "last resort": I actually find it easier to deal with objects/collections/arrays than with Strings and XML, etc. This is a personal stance with no much foundation regarding this specific drools scenario, really. </font></div>
<div><br></div><div>What I need to do (before the actual comparison) is to group the rules according to the agenda-group plus a variable value within a condition within every <rule>, such as this:</div><div><font class="Apple-style-span" face="verdana, sans-serif"><br>
</font></div><div><font class="Apple-style-span" face="verdana, sans-serif"><rule></font></div><div><font class="Apple-style-span" face="verdana, sans-serif"> ...</font></div><div><font class="Apple-style-span" face="verdana, sans-serif"> <rule-attribute name="agenda-group" value="0da90b15" /></font></div>
<div><font class="Apple-style-span" face="verdana, sans-serif"> ...</font></div><div><font class="Apple-style-span" face="verdana, sans-serif"><div> <field-constraint field-name="object"></div><div> <literal-restriction evaluator="==" value="d:" /> <!-- LiteralConstraint java object --></div>
<div> </field-constraint></div><div> ...</div><div></rule></div><div><br></div><div>(in this case I'd like to index this rule to a 2-key hashmap => [0da90b15, "d:"])</div><div><br></div><div>
XML manipulation would mean parsing hundreds of rules, extracting the agenda-group and the "object" condition manually. Further down the road, I will also need to extract the whole LHS to perform the comparison. I'm afraid this would take too long, but I might be wrong.</div>
<div><br></div><div>Thanks again,</div><div>_ miguel, PT</div><div><br></div></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"><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><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
<div lang="EN-US" link="blue" vlink="purple"><div><p class="MsoNormal"><span style="font-size:11.0pt;color:#1F497D">Wouldn’t it be easier to analyze the pre-converted xml document rather than trying to do it on the compiled knowledge base (presumably you keep the old xml file around) – this way it is just string and xml manipulation, though it depends on how exactly the matches must be.<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>
<div style="border:none;border-left:solid blue 1.5pt;padding:0cm 0cm 0cm 4.0pt"><div><div style="border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm"><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 15:55</span></p><div><div></div><div class="h5"><br><b>To:</b> Rules Users List<br><b>Subject:</b> Re: [rules-users] Rule one-by-one comparison<u></u><u></u></div></div><p></p></div></div><div>
<div></div><div class="h5"><p class="MsoNormal"><u></u> <u></u></p><p class="MsoNormal"><span style="font-size:10.0pt">Hi there,</span><u></u><u></u></p><div><p class="MsoNormal"><u></u> <u></u></p></div><div><p class="MsoNormal">
<span>Thanks for replying. I will try to explain my current challenge a bit further:</span><u></u><u></u></p></div><div><p class="MsoNormal"><u></u> <u></u></p></div><div><p class="MsoNormal"><span>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).</span><u></u><u></u></p>
</div><div><p class="MsoNormal"><u></u> <u></u></p></div><div><p class="MsoNormal"><span>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:</span><u></u><u></u></p>
</div><div><p class="MsoNormal"><u></u> <u></u></p></div><div><p class="MsoNormal"><span>- If a rule keeps the same LHS, I need to resume the application state before restart regarding that rule;</span><u></u><u></u></p>
</div>
<div><p class="MsoNormal"><span>- If a rule has been modified, I may discard the state regarding that rule (do not need to load it);</span><u></u><u></u></p></div><div><p class="MsoNormal"><u></u> <u></u></p></div><div><p class="MsoNormal">
<span>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.</span><u></u><u></u></p>
</div><div><p class="MsoNormal"><u></u> <u></u></p></div><div><p class="MsoNormal"><span>I hope this helps to describe the problem.</span><u></u><u></u></p></div><div><p class="MsoNormal"><span>Thanks again for reading. Any help is greatly appreciated.</span><u></u><u></u></p>
</div><div><p class="MsoNormal"><u></u> <u></u></p></div><div><p class="MsoNormal"><span>_ miguel, PT</span><u></u><u></u></p></div><div><p class="MsoNormal"><u></u> <u></u></p></div><div><p class="MsoNormal"><u></u> <u></u></p>
</div><div><p class="MsoNormal"><u></u> <u></u></p></div><div><p class="MsoNormal"><u></u> <u></u></p></div><div><p class="MsoNormal"><u></u> <u></u></p><div><p class="MsoNormal">2011/8/26 Swindells, Thomas <<a href="mailto:TSwindells@nds.com" target="_blank">TSwindells@nds.com</a>><u></u><u></u></p>
<div><div><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?</span><u></u><u></u></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?</span><u></u><u></u></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?</span><u></u><u></u></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.</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:11.0pt;color:#1F497D"> </span><u></u><u></u></p><p class="MsoNormal"><span style="font-size:11.0pt;color:#1F497D">Thomas</span><u></u><u></u></p><p class="MsoNormal"><span style="font-size:11.0pt;color:#1F497D"> </span><u></u><u></u></p>
<div style="border:none;border-left:solid blue 1.5pt;padding:0cm 0cm 0cm 4.0pt"><div><div style="border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm"><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</span><u></u><u></u></p></div></div><div><div><p class="MsoNormal"> <u></u><u></u></p><p class="MsoNormal">
<span style="font-size:10.0pt">Esteban,</span><u></u><u></u></p><div><p class="MsoNormal"> <u></u><u></u></p></div><div><p class="MsoNormal">Thank you very much for that. I will look into it.<u></u><u></u></p></div><div>
<p class="MsoNormal">
Any other ideas, anyone?<u></u><u></u></p></div><div><p class="MsoNormal"> <u></u><u></u></p></div><div><p class="MsoNormal">_ miguel<u></u><u></u></p></div><div><p class="MsoNormal"> <u></u><u></u></p></div><div><p class="MsoNormal">
<u></u><u></u></p></div><div><p class="MsoNormal"> <u></u><u></u></p><div><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><div><p class="MsoNormal">You can have a look at its tests to see how it works.<u></u><u></u></p>
</div><div><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>
</div><div><p class="MsoNormal"> <u></u><u></u></p></div><div><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>
</div><div><p class="MsoNormal"> <u></u><u></u></p></div><div><p class="MsoNormal">Best Regards,<u></u><u></u></p></div><div><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><u></u><u></u></p>
<div><div><div><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></div></div><blockquote style="border:none;border-left:solid #CCCCCC 1.0pt;padding:0cm 0cm 0cm 6.0pt;margin-left:4.8pt;margin-top:5.0pt;margin-right:0cm;margin-bottom:5.0pt">
<div><div><p class="MsoNormal"><span style="font-size:10.0pt">Hi there everybody,<br clear="all"></span><u></u><u></u></p><div><div><p class="MsoNormal"> <u></u><u></u></p></div><div><p class="MsoNormal">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.<u></u><u></u></p>
</div><div><p class="MsoNormal"> <u></u><u></u></p></div><div><p class="MsoNormal">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?<u></u><u></u></p>
</div><div><p class="MsoNormal"> <u></u><u></u></p></div><div><p class="MsoNormal">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?<u></u><u></u></p>
</div><div><p class="MsoNormal"> <u></u><u></u></p></div><div><p class="MsoNormal">Thanks in advance,<u></u><u></u></p></div><div><p class="MsoNormal">_ miguel, PT<u></u><u></u></p></div><div><p class="MsoNormal"> <u></u><u></u></p>
</div><div><p class="MsoNormal"><span style="color:#888888"> </span><u></u><u></u></p></div><p class="MsoNormal"><span style="color:#888888">-- </span><u></u><u></u></p><div><p class="MsoNormal"><span style="color:#888888">"To understand what is recursion you must first understand recursion"</span><u></u><u></u></p>
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