Re: [rules-users] rules-users Digest, Vol 40, Issue 41

The documentation available for Guvnor does not contain any examples .Is there any other documentation available so that we can understand how to create functions,dsl and other features available in Guvnor. Nilima ____________________________________________ Experience certainty. IT Services Business Solutions Outsourcing ____________________________________________ From: rules-users-request(a)lists.jboss.org To: rules-users(a)lists.jboss.org Date: 03/11/2010 01:19 AM Subject: rules-users Digest, Vol 40, Issue 41 Sent by: rules-users-bounces(a)lists.jboss.org Send rules-users mailing list submissions to rules-users(a)lists.jboss.org To subscribe or unsubscribe via the World Wide Web, visit https://lists.jboss.org/mailman/listinfo/rules-users or, via email, send a message with subject or body 'help' to rules-users-request(a)lists.jboss.org You can reach the person managing the list at rules-users-owner(a)lists.jboss.org When replying, please edit your Subject line so it is more specific than "Re: Contents of rules-users digest..." Today's Topics: 1. A general question about this mailing list (Nathan Bell) 2. Re: A general question about this mailing list (Geoffrey De Smet) 3. Re: Problems count and sumarizing data in facts (Yamil Bracho) ---------------------------------------------------------------------- Message: 1 Date: Wed, 10 Mar 2010 11:31:00 -0600 From: "Nathan Bell" <Nathan.Bell(a)pharmacyonesource.com&gt; Subject: [rules-users] A general question about this mailing list To: <rules-users(a)lists.jboss.org&gt; Message-ID: <608FA11CE83EC54C98A8E4715C0EED571966DF(a)rphpost.rph.int&gt; Content-Type: text/plain; charset="us-ascii" I'm fairly new to this list, but I have already seen a great deal of helpful information being shared. The problem is that a collection of emails makes a poor knowledge base. Has there ever been an attempt to set up a forum/wiki/knowledgebase for the Drools community? I would be willing to help with setting that up if it is something the community wants. I'm guessing that this has been talked about before, so I want to check-in with the community and ask why it does not exist already. Is there some barrier that I am not aware of that would make a different format undesirable? Thank You, Nathan Bell -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.jboss.org/pipermail/rules-users/attachments/20100310/90dfc6b... ------------------------------ Message: 2 Date: Wed, 10 Mar 2010 19:25:39 +0100 From: Geoffrey De Smet <ge0ffrey.spam(a)gmail.com&gt; Subject: Re: [rules-users] A general question about this mailing list To: rules-users(a)lists.jboss.org Message-ID: <hn8o73$b59$1(a)dough.gmane.org&gt; Content-Type: text/plain; charset=windows-1252; format=flowed I personally don't believe much in a wiki (there is a drools wiki btw), because it gets stale fast. I believe much more in the reference manual, which is checked in in Subversion. In the Drools Planner manual I 've already added "meta" information, such as where jira is and how to build from source etc etc. https://hudson.jboss.org/hudson/job/drools/lastSuccessfulBuild/artifact/t... With kind regards, Geoffrey De Smet Nathan Bell schreef: ------------------------------ Message: 3 Date: Wed, 10 Mar 2010 19:38:09 +0000 From: Yamil Bracho <yamilbracho(a)hotmail.com&gt; Subject: Re: [rules-users] Problems count and sumarizing data in facts To: Drools UserList <rules-users(a)lists.jboss.org&gt; Message-ID: <SNT130-w419F987761CE0A1C882981AA330(a)phx.gbl&gt; Content-Type: text/plain; charset="windows-1252" Thanks Thomas. I rewrote the rule as: rule "Sumatoria de lineas detalle vs Header" salience 10 when Number( $total : doubleValue) from accumulate( Map(this["_TYPE_"] == "D", $monto : eval(Double.parseDouble(this.get("MONTO")))), sum($monto)) $map : Map(this["_TYPE_"] == "H", this["MT_TOTAL"] != $total) then System.out.println("TOTAL=" + $total); listBitacora.add(new BitacoraDTO($map.get("_NUMLINE_"), "Error en el Detalle: El n?mero del lineas de detalle (" + $total + ") no empareja con lo del encabezado (" + $map.get("NU_REGISTROS") + ")")); end but I am getting errors in the parseDouble: [828,29]: [ERR 101] Line 828:29 no viable alternative at input 'Double' in rule "Sumatoria de lineas detalle vs Header" in pattern Map[828,67]: [ERR 102] Line 828:67 mismatched input ')' expecting 'then' in rule "Sumatoria de lineas detalle vs Header" Any hint... From: TSwindells(a)nds.com To: rules-users(a)lists.jboss.org Date: Wed, 10 Mar 2010 15:13:49 +0000 Subject: Re: [rules-users] Problems count and sumarizing data in facts To convert from string to double you have to full back to java: Something along the lines of $monto : eval(Double.parseDouble(this.get(?MONTO?))) However even with doing this your rules are unlikely to work consistently as you expect. Using equality tests on doubles is fundamentally unsafe as doubles aren?t represented exactly and may not exactly match the value you think you have. Force instance 0.1+0.1+0.1+0.1+0.1+0.1+0.1+0.1+0.1+0.1 != 1.0 (dependent on floating point chipset etc). If you are dealing with currency then it is far simpler and safer to just operate with integers and divide by 100 when you want to display the value. The other alternative is to use BigDecimal which will store an exact representation but will probably require more work with getting your accumulate function correct. Your last option is to use Math.abs(left-right) < 0.1 to see if they are approximately equal. More details can be found here http://firstclassthoughts.co.uk/java/traps/java_double_traps.html Thomas From: rules-users-bounces(a)lists.jboss.org [ mailto:rules-users-bounces@lists.jboss.org] On Behalf Of Yamil Bracho Sent: 10 March 2010 14:27 To: Drools UserList Subject: Re: [rules-users] Problems count and sumarizing data in facts I solved the counting of detail lines this way: rule "Contador de lineas detalle vs Header" salience 10 when Number($count : intValue) from accumulate( $mp : Map(this["_TYPE_"] == "D"), count($mp)) $map : Map(this["_TYPE_"] == "H", this["NU_REGISTROS"] != $count) then System.out.println("NumRecs=" + $count); listBitacora.add(new BitacoraDTO($map.get("_NUMLINE_"), "El n?mero del lineas de detalle (" + $count + ") no empareja con lo del encabezado (" + $map.get("NU_REGISTROS") + ")")); end However, I still got problem with summarize the amounts. I wrote rule "Sumatoria de lineas detalle vs Header" salience 10 when Number( $total : doubleValue) from accumulate( Map(this["_TYPE_"] == "D", $monto : ((Number) this["MONTO"]), sum($monto))) $map : Map(this["_TYPE_"] == "H", this["MT_TOTAL"] != $total) then System.out.println("TOTAL=" + $total); listBitacora.add(new BitacoraDTO($map.get("_NUMLINE_"), "Error en el Detalle: El n?mero del lineas de detalle (" + $total + ") no empareja con lo del encabezado (" + $map.get("NU_REGISTROS") + ")")); end And i am getting mismatched input" so my question is how to convert a string to double in this line "$monto : ((Number) this["MONTO"])," ? TIA Yamil From: yamilbracho(a)hotmail.com To: rules-users(a)lists.jboss.org Date: Tue, 9 Mar 2010 17:41:43 +0000 Subject: [rules-users] Problems count and sumarizing data in facts Hi, I have two kind of facts in a map. There is a field called _TYPE_ (H)eader, D)etail) In the Header line I have two String fields, one for the number of details lines ("NU_REGISTROS") and another for the sum of the detail line ("MT_TOTAL") In the detail lines I only have a String field called "MONTO" I would like to build two rules. One to check the count of detail lines versus the field in the header line so I wrote : rule "Contador de lineas detalle vs Header" salience 10 when $numRecs : Number() from accumulate(Map(this["_TYPE_"] == "D", $d : this["_NUMLINE_"]), count($d)) $map : Map(this["_TYPE_"] == "H", this["NU_REGISTROS"] != $numRecs) then System.out.println("NumRecs=" + $numRecs); listBitacora.add(new BitacoraDTO($map.get("_NUMLINE_"), "Error en el Detalle: El n?mero del lineas de detalle (" + $total + ") no empareja con lo del encabezado (" + $map.get("NU_REGISTROS") + ")")); end However I always got "NumRecs=1" when i print out the value of $numRecs but I am absolute sure there is two details lines... Second when i try to sumarize the total field in the details line i got (MONTO in the detail line is a string): rule "Sumatoria de lineas detalle vs Header" salience 10 when $total : Number() from accumulate(Map(this["_TYPE_"] == "D", $monto : this["MONTO"]), sum(eval(Double.valueOf((String) $monto )))) $map : Map(this["_TYPE_"] == "H", this["MT_TOTAL"] != $total) then System.out.println("TOTAL=" + $total); listBitacora.add(new BitacoraDTO($map.get("_NUMLINE_"), "Error en el Detalle: El n?mero del lineas de detalle (" + $total + ") no empareja con lo del encabezado (" + $map.get("NU_REGISTROS") + ")")); end but I got Rule Compilation error : [Rule name='Sumatoria de lineas detalle vs Header'] rule/Rule_Sumatoria_de_lineas_detalle_vs_Header_0.java (9:1313) : The method eval(Double) is undefined for the type Rule_Sumatoria_de_lineas_detalle_vs_Header_0 Any help in those tow problems TIA Yamil Actual?zate gratis al nuevo Internet Explorer 8 y navega m?s seguro Compartir tus mejores FOTOS es f?cil en Messenger ?DESCUBRE c?mo! ************************************************************************************** This message is confidential and intended only for the addressee. 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