<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div>Not a problem. Actually I prefer to perform flow control using working memory objects like that instead of using the keywords, but I'm old school. :)<br><br>GreG</div><div><br>On Nov 29, 2012, at 11:11, "Cotton, Ben" <<a href="mailto:Ben.Cotton@morganstanley.com">Ben.Cotton@morganstanley.com</a>> wrote:<br><br></div><blockquote type="cite"><div>
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<p class="MsoListParagraph" style="text-indent:-.25in;mso-list:l0 level1 lfo1"><!--[if !supportLists]--><span style="font-family:Wingdings;color:black"><span style="mso-list:Ignore">Ø<span style="font:7.0pt "Times New Roman"">
</span></span></span><!--[endif]--><span style="color:black">Have you looked at agenda-group or ruleflow-group? </span><span style="font-family:"Calibri","sans-serif";color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri","sans-serif";color:#1F497D">Sweet.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoListParagraph" style="text-indent:-.25in;mso-list:l0 level1 lfo1"><!--[if !supportLists]--><span style="font-family:Wingdings;color:black"><span style="mso-list:Ignore">Ø<span style="font:7.0pt "Times New Roman"">
</span></span></span><!--[endif]--><span style="color:black">You've reinvented some of their functionality here. </span><span style="font-family:"Calibri","sans-serif";color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri","sans-serif";color:#1F497D">Gak! I figured I must have been doing that (and that’s the last thing I want to do). Got stuck in my “Drools newbie deep dive” … knew had to hit this forum and “surface for
air”. THANKS!<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<div style="border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> <a href="mailto:rules-users-bounces@lists.jboss.org">rules-users-bounces@lists.jboss.org</a> [<a href="mailto:rules-users-bounces@lists.jboss.org">mailto:rules-users-bounces@lists.jboss.org</a>]
<b>On Behalf Of </b>Greg Barton<br>
<b>Sent:</b> Thursday, November 29, 2012 12:00 PM<br>
<b>To:</b> Rules Users List<br>
<b>Subject:</b> Re: [rules-users] DROOLs 'Guarded entry/block' tactics for Rules synchronization and ordinality?<o:p></o:p></span></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<div>
<div>
<p class="MsoNormal" style="background:white"><span style="color:black">Have you looked at agenda-group or ruleflow-group? You've reinvented some of their functionality here. <o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="color:black"><o:p> </o:p></span></p>
</div>
<div>
<div>
<div>
<div class="MsoNormal" align="center" style="text-align:center;background:white">
<span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">
<hr size="1" width="100%" align="center">
</span></div>
<p class="MsoNormal" style="background:white"><b><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">From:</span></b><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black"> "Cotton, Ben" <<a href="mailto:Ben.Cotton@morganstanley.com">Ben.Cotton@morganstanley.com</a>><br>
<b>To:</b> "<a href="mailto:rules-users@lists.jboss.org">rules-users@lists.jboss.org</a>" <<a href="mailto:rules-users@lists.jboss.org">rules-users@lists.jboss.org</a>>
<br>
<b>Cc:</b> "O'Brien, Patrick" <<a href="mailto:Patrick.O'Brien@morganstanley.com">Patrick.O'Brien@morganstanley.com</a>> <br>
<b>Sent:</b> Thursday, November 29, 2012 10:47 AM<br>
<b>Subject:</b> [rules-users] DROOLs 'Guarded entry/block' tactics for Rules synchronization and ordinality?</span><span style="color:black"><o:p></o:p></span></p>
</div>
<p class="MsoNormal" style="background:white"><span style="color:black"><o:p> </o:p></span></p>
<div id="yiv211051262">
<div>
<div>
<div>
<p class="MsoNormal" style="background:white"><span style="color:black">Hi,<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="color:black"> <o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="color:black">I have finally gained a tiny bit of control (and maybe even some competency) in using the DROOLs language operators ‘no-loop’ and ‘lock-on-active’ as a basis for controlling rule set firing
behavior in response to Fact mutation events (during consequence processing).<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="color:black"> <o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="color:black">I now want to (competently!) use DROOLs language tactics that give me ever finer grained control over managing rule set firing behavior on Fact mutation events. Specifically, I want to
be able to implement some form of ‘Guarded entry/block’ controls. <o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="color:black"> <o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="color:black">E.g. let’s say I have a Fact (InsertedFactPOJO) that I insert into the KS and want to have its ‘fireAllRules()’ AgendaSet(s) renedered in exact incremental ordinal stages and in perfect
isolation. To do this, I am testing the inclusion of a ‘countdownLatch’ Semaphore reference as a Fact member (initialized to N=`total rule count` value). I then use this to ‘Guard’ individual rule entry, by generating an explicit predicate participant
<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="color:black"> <o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="color:black">(InsertedFactPOJO(countdownLatch == i) )
<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="color:black"> <o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="color:black">@ each ith Rule producedby my template.<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="color:black"> <o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="color:black">Is this approach a valid/sound/complete way to implement ‘Guarded entry/block’ controls in DROOLs? Is there a better way?<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="color:black"> <o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="color:black">As always, my sincerest gratitude to this community for its generosity (and its genius).<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="color:black"> <o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="color:black">Ben<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="color:black"> <o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><b><span style="color:#960000">package</span></b><span style="color:black"> com.ms.fast.triclear.eligibility.rules.drools_community.questions.posted;
<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><b><span style="color:#960000">import</span></b><span style="color:black"> com.ms.fast.triclear.eligibility.InsertedFactPOJO;
<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="color:olive">//fact:(backed by Class 'InsertedFactPOJO' has
</span><span style="color:black"><o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="color:olive">//- 'countdownLatch' (Semaphore) member
</span><span style="color:black"><o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="color:olive">//- 'aList' (List)member</span><span style="color:black"><o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="color:black"> <o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><b><span style="color:#960000">rule</span></b><span style="color:black">
</span><span style="color:green">"RULE_ALL_RULES_HAVE_FIRED_ONCE_ORDINALLY"</span><span style="color:black"><o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><b><span style="color:#960000">when</span></b><span style="color:black"><o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="color:black"> fact:InsertedFactPOJO()<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="color:black"> InsertedFactPOJO(countdownLatch == 0)<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><b><span style="color:#960000">then</span></b><span style="color:black"><o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="color:black"> System.out.format(</span><span style="color:green">"\tALL RULES have fired *EXACTLY* once, *EXACTLY* ordinally. "</span><span style="color:black">+<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="color:black">
</span><span style="color:green">" fact.countdownLatch=%d \n\t fact.aList=%s\n\n"</span><span style="color:black">,<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="color:black"> fact.countdownLatch,
<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="color:black"> fact.aList.toString());<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><b><span style="color:#960000">end</span></b><span style="color:black"><o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="color:black"> <o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><b><span style="color:#960000">rule</span></b><span style="color:black">
</span><span style="color:green">"RULE_3"</span><span style="color:black"><o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="color:black"> </span>
<b><span style="color:#960000">when</span></b><span style="color:black"><o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="color:black"> fact:InsertedFactPOJO()<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="color:black"> InsertedFactPOJO(countdownLatch == 3)<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="color:black"> </span>
<span style="color:olive">//bunch of other L-Value PREDICATES </span><span style="color:black"><o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="color:black"> </span><b><span style="color:#960000">then</span></b><span style="color:black"><o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="color:black"> System.out.format(</span><span style="color:green">"\t %20.20s"</span><span style="color:black">+<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="color:black">
</span><span style="color:green">" \t(DROOLS agenda: consequence fired for L-value predicate match @RULE="</span><span style="color:black">+<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="color:black">
</span><span style="color:green">"3"</span><span style="color:black">+</span><span style="color:green">" -- fact.countDownLatch=%d)\n"</span><span style="color:black">,
</span><span style="color:green">"Rule 3"</span><span style="color:black">,fact.countdownLatch);<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="color:black"> </span>
<b><span style="color:#960000">modify</span></b><span style="color:black"> (fact) {<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="color:black"> countdownLatch = fact.countdownLatch - 1,<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="color:black"> aList.add(</span><span style="color:green">"Rule 3 pattern-match event added to POJO 'aList' field"</span><span style="color:black">);<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="color:black"> }
<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><b><span style="color:#960000">end</span></b><span style="color:black"><o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="color:black"> <o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><b><span style="color:#960000">rule</span></b><span style="color:black">
</span><span style="color:green">"RULE_2"</span><span style="color:black"><o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="color:black"> </span>
<b><span style="color:#960000">when</span></b><span style="color:black"><o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="color:black"> fact:InsertedFactPOJO()<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="color:black"> InsertedFactPOJO(countdownLatch == 2)<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="color:black"> </span>
<span style="color:olive">//bunch of other L-Value PREDICATES </span><span style="color:black"><o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="color:black"> </span><b><span style="color:#960000">then</span></b><span style="color:black"><o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="color:black"> System.out.format(</span><span style="color:green">"\t %20.20s"</span><span style="color:black">+<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="color:black">
</span><span style="color:green">" \t(DROOLS agenda: consequence fired for L-value predicate match @RULE="</span><span style="color:black">+<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="color:black">
</span><span style="color:green">"2"</span><span style="color:black">+</span><span style="color:green">" -- fact.countDownLatch=%d)\n"</span><span style="color:black">,
</span><span style="color:green">"Rule 2"</span><span style="color:black">,fact.countdownLatch);<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="color:black"> </span>
<b><span style="color:#960000">modify</span></b><span style="color:black"> (fact) {<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="color:black"> countdownLatch = fact.countdownLatch - 1,<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="color:black"> aList.add(</span><span style="color:green">"Rule 2 pattern-match event added to POJO 'aList' field"</span><span style="color:black">);<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="color:black"> }
<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><b><span style="color:#960000">end</span></b><span style="color:black"><o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="color:black"> <o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><b><span style="color:#960000">rule</span></b><span style="color:black">
</span><span style="color:green">"RULE_1"</span><span style="color:black"><o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="color:black"> </span>
<b><span style="color:#960000">when</span></b><span style="color:black"><o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="color:black"> fact:InsertedFactPOJO()<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="color:black"> InsertedFactPOJO(countdownLatch == 1)<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="color:black"> </span>
<span style="color:olive">//bunch of other L-Value PREDICATES </span><span style="color:black"><o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="color:black"> </span><b><span style="color:#960000">then</span></b><span style="color:black"><o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="color:black"> System.out.format(</span><span style="color:green">"\t %20.20s"</span><span style="color:black">+<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="color:black">
</span><span style="color:green">" \t(DROOLS agenda: consequence fired for L-value predicate match @RULE="</span><span style="color:black">+<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="color:black">
</span><span style="color:green">"1"</span><span style="color:black">+</span><span style="color:green">" -- fact.countDownLatch=%d)\n"</span><span style="color:black">,
</span><span style="color:green">"Rule 1"</span><span style="color:black">,fact.countdownLatch);<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="color:black"> </span>
<b><span style="color:#960000">modify</span></b><span style="color:black"> (fact) {<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="color:black"> countdownLatch = fact.countdownLatch - 1,<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="color:black"> aList.add(</span><span style="color:green">"Rule 1 pattern-match event added to POJO 'aList' field"</span><span style="color:black">);<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="color:black"> }
<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><b><span style="color:#960000">end</span></b><span style="color:black"><o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="color:black"> <o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="color:black"> <o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><b><span style="color:gray"> </span></b><span style="color:black"><o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><b><span style="color:gray">Ben D Cotton III</span></b><span style="font-size:9.0pt;color:gray"><br>
Morgan Stanley & Co.<br>
OTC Derivatives Clearing Technology <br>
1221 AOTA Rockefeller Ctr - Flr 27<br>
New York, NY 10020<br>
(212)762.9094<br>
<a href="mailto:ben.cotton@ms.com" target="_blank"><span style="color:gray">ben.cotton@ms.com</span></a>
</span><span style="color:black"><o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="color:black"> <o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="color:black"> <o:p></o:p></span></p>
</div>
</div>
<p class="MsoNormal" style="margin-bottom:12.0pt;background:white"><span style="color:black"><o:p> </o:p></span></p>
<div class="MsoNormal" align="center" style="text-align:center;background:white">
<span style="color:black">
<hr size="2" width="100%" align="center" id="yiv211051262HR1">
</span></div>
<p class="MsoNormal" style="background:white"><span style="color:black"><br>
</span><span style="font-size:7.5pt;font-family:"Arial","sans-serif";color:gray">NOTICE: Morgan Stanley is not acting as a municipal advisor and the opinions or views contained herein are not intended to be, and do not constitute, advice within the meaning
of Section 975 of the Dodd-Frank Wall Street Reform and Consumer Protection Act. If you have received this communication in error, please destroy all electronic and paper copies and notify the sender immediately. Mistransmission is not intended to waive confidentiality
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</div>
<p class="MsoNormal" style="margin-bottom:12.0pt;background:white"><span style="color:black"><br>
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<o:p></o:p></span></p>
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</div>
</div>
<br><br>
<hr id="HR1">
<br><span style="FONT-FAMILY: Arial; COLOR: #808080; FONT-SIZE: 7.5pt">NOTICE:
Morgan Stanley is not acting as a municipal advisor and the opinions or views
contained herein are not intended to be, and do not constitute, advice within
the meaning of Section 975 of the Dodd-Frank Wall Street Reform and Consumer
Protection Act. If you have received this communication in error, please destroy
all electronic and paper copies and notify the sender immediately.
Mistransmission is not intended to waive confidentiality or privilege. Morgan
Stanley reserves the right, to the extent permitted under applicable law, to
monitor electronic communications. This message is subject to terms available at
the following link: <a style="FONT-FAMILY: Arial; COLOR: #808080; FONT-SIZE: 7.5pt" href="http://www.morganstanley.com/disclaimers">http://www.morganstanley.com/disclaimers</a>
If you cannot access these links, please notify us by reply message and we will
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