February 2010 - rules-users - Jboss List Archives

Re: [rules-users] rules-users Digest, Vol 39, Issue 45

by Nilima R

Hi In drools in deployment we get the below link. http://localhost:8080/drools-guvnor/org.drools.guvnor.Guvnor/package/xxxx... We need to include this in properties file in application wherein this URL is mentioned. How can one protect unauthorized access to this URL as the whole set of rules can be viewed for this . Nilima ____________________________________________ Experience certainty. IT Services Business Solutions Outsourcing ____________________________________________ From: rules-users-request(a)lists.jboss.org To: rules-users(a)lists.jboss.org Date: 02/17/2010 10:14 PM Subject: rules-users Digest, Vol 39, Issue 45 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. Re: Negating a result (Wolfgang Laun) 2. Re: Negating a result (djb) 3. Re: Negating a result (Wolfgang Laun) 4. Re: guvnor - dsl rule editor - using ":" in text box (Toni Rikkola) 5. Re: getWorkingMemoryEntryPoint returns NULL (Wolfgang Laun) 6. Insert new facts from RHS (Malinda Kaushalye) 7. Re: Insert new facts from RHS (Mauricio Salatino) 8. Re: Insert new facts from RHS (Enda J Diggins) ---------------------------------------------------------------------- Message: 1 Date: Wed, 17 Feb 2010 09:48:50 +0100 From: Wolfgang Laun <wolfgang.laun(a)gmail.com> Subject: Re: [rules-users] Negating a result To: Rules Users List <rules-users(a)lists.jboss.org> Message-ID: <17de7ee81002170048j6898203br6a73e2e2962cbc79(a)mail.gmail.com> Content-Type: text/plain; charset="iso-8859-1" Please be more specfic. If your field is called "foo", then should have a method in the class representing your fact, such as: boolean getFoo(){ return <condition> ? ! (<expression>) : <expression>; } Basically, <condition> could be a global parameter (public static final) or a static or regular method call. <expression> could depend on other attribute values, and so on. You can then write your CEs with a test such as foo == true But I think this is closely related with that other question you have posted. -W On Wed, Feb 17, 2010 at 9:32 AM, djb <dbrownell83(a)hotmail.com> wrote: > > Hi Wolfgang, > > Sure, I know de Morgan's laws, but I'm not asking how one can negate a > condition... > > I'm asking how one can either negate or not negate, based on a test... and > whether I'm going to have to split my spreadsheet/rule-template into 2, > (i.e. 1 for "may not be" rules, 1 for "must be" rules). > > My spreadsheet has a field that in Java would be expressed as field ? > !finalResult : finalResult > > But in DRL, it seems the lack of a ternary operator means I have to split > my > rule-set, and I'm just checking if this is the case. > > -Daniel > > -- > View this message in context: > http://n3.nabble.com/Negating-a-result-tp212559p212656.html > Sent from the Drools - User mailing list archive at Nabble.com. > _______________________________________________ > rules-users mailing list > rules-users(a)lists.jboss.org > https://lists.jboss.org/mailman/listinfo/rules-users > -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.jboss.org/pipermail/rules-users/attachments/20100217/18c1914... ------------------------------ Message: 2 Date: Wed, 17 Feb 2010 02:02:08 -0800 (PST) From: djb <dbrownell83(a)hotmail.com> Subject: Re: [rules-users] Negating a result To: rules-users(a)lists.jboss.org Message-ID: <1266400928420-212797.post(a)n3.nabble.com> Content-Type: text/plain; charset=us-ascii Well the thing is, it's not just one condition - it's the combination of all my rule's conditions. And my rules have about 7 conditions, none of which are mandatory. And that is actually the source of all my problems: that the conditions are optional. If I set up a few logical relationships, there is nothing specific I am testing on, which gives a single expression I can test in a function. In procedural programming, I check each of the 7 conditions optionally, and then I apply my ternary operator to the final result. But here I can't do that, because the condition is made up of all the little conditions that may or may not be applicable. PS. Ok, so I see from the other thread that a rule template is meant to place whatever text you give it, like a text pre-processor. I'll see if that is correct, thanks. I thought it might not be, because if you provide a blank cell, it deletes your entire condition, instead of providing a "" or a null, like you'd expect from a text pre-processor. -- View this message in context: http://n3.nabble.com/Negating-a-result-tp212559p212797.html Sent from the Drools - User mailing list archive at Nabble.com. ------------------------------ Message: 3 Date: Wed, 17 Feb 2010 11:33:14 +0100 From: Wolfgang Laun <wolfgang.laun(a)gmail.com> Subject: Re: [rules-users] Negating a result To: Rules Users List <rules-users(a)lists.jboss.org> Message-ID: <17de7ee81002170233s62e0353fs50d439c532c75e82(a)mail.gmail.com> Content-Type: text/plain; charset="iso-8859-1" On Wed, Feb 17, 2010 at 11:02 AM, djb <dbrownell83(a)hotmail.com> wrote: > > Ok, so I see from the other thread that a rule template is meant to place > whatever text you give it, like a text pre-processor. I'll see if that is > correct, thanks. I implemented this, so I hope I still know what I did. :-) > I thought it might not be, because if you provide a blank > cell, it deletes your entire condition, instead of providing a "" or a > null, > like you'd expect from a text pre-processor. > The idea of the interface for generating rules from object collection is to avoid the constraints of spreadsheet translation. -W > -- > View this message in context: > http://n3.nabble.com/Negating-a-result-tp212559p212797.html > Sent from the Drools - User mailing list archive at Nabble.com. > _______________________________________________ > rules-users mailing list > rules-users(a)lists.jboss.org > https://lists.jboss.org/mailman/listinfo/rules-users > -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.jboss.org/pipermail/rules-users/attachments/20100217/ea6ec91... ------------------------------ Message: 4 Date: Wed, 17 Feb 2010 12:33:10 +0200 From: Toni Rikkola <trikkola(a)redhat.com> Subject: Re: [rules-users] guvnor - dsl rule editor - using ":" in text box To: Rules Users List <rules-users(a)lists.jboss.org> Message-ID: <4B7BC5E6.6040704(a)redhat.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Tested it and this is a bug. I made a Jira for it so you can follow it. https://jira.jboss.org/jira/browse/GUVNOR-505 Toni John Walker wrote: > All, > > I have a DSL sentence that looks like this: > [when]- and var9 matches {v9}=field9!=null, field9 matches "{v9}" > > When using the Guvnor guided rule editor, I add the "- and var9 > matches {v9}" DSL sentence to the rule, giving me a WHEN condition > like this: > - and var9 matches [text box] > > I want to put a URL in the text box, but anytime I use a value > containing a colon":", > I get a popup box with error message "The value [some value with a > colon] is not valid for this field" > > Example: > DSL in rule, using guvnor guided editor: "- and var9 matches > [http://google.com]" > Popup error message: "The value http://google.com is not valid for > this field" > > What needs to happen to allow a value with a colon? I did not have > this problem with drools4 and JBRMS. > > Thanks, > John > ------------------------------------------------------------------------ > > _______________________________________________ > rules-users mailing list > rules-users(a)lists.jboss.org > https://lists.jboss.org/mailman/listinfo/rules-users > ------------------------------ Message: 5 Date: Wed, 17 Feb 2010 13:59:03 +0100 From: Wolfgang Laun <wolfgang.laun(a)gmail.com> Subject: Re: [rules-users] getWorkingMemoryEntryPoint returns NULL To: Rules Users List <rules-users(a)lists.jboss.org> Message-ID: <17de7ee81002170459y5c64fe34p2922245f510decfc(a)mail.gmail.com> Content-Type: text/plain; charset="iso-8859-1" Do you use "global" in your rules? This would be the "declaration" of an entry point. Also, KnowledgeSessionConfiguration should be passed to the method call creating a session, which I don't see in your code. -W On Wed, Feb 17, 2010 at 2:16 AM, Malinda Kaushalye <kaushalye(a)yahoo.com>wrote: > Dear All, > It appears to be that the getWorkingMemoryEntryPoint() method returns NULL > in my code given below. > Note that EventProcessingOption = STREAM and ClockType = "realtime" if that > is of any importance. > Cheers, > Malinda > > public class EventKnowledgeBase { private KnowledgeBase kbase = null; > private StatefulKnowledgeSession ksession = null; private > WorkingMemoryEntryPoint globalStream = null; > public EventKnowledgeBase() throws Exception { > super(); > kbase = readKnowledgeBase(); > ksession = kbase.newStatefulKnowledgeSession(); > KnowledgeBaseConfiguration config = > KnowledgeBaseFactory.newKnowledgeBaseConfiguration(); > config.setOption( EventProcessingOption.STREAM ); > KnowledgeSessionConfiguration kbSessionConfig = > KnowledgeBaseFactory.newKnowledgeSessionConfiguration(); > kbSessionConfig.setOption( ClockTypeOption.get("realtime") ); > globalStream = ksession.getWorkingMemoryEntryPoint( "global" ); > if(null == globalStream){ > System.out.println("WorkingMemoryEntryPoint is Null"); //YEAH..! IT > RETURNS NULL > } > } > > > } > > > > > > _______________________________________________ > rules-users mailing list > rules-users(a)lists.jboss.org > https://lists.jboss.org/mailman/listinfo/rules-users > -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.jboss.org/pipermail/rules-users/attachments/20100217/23fa4cd... ------------------------------ Message: 6 Date: Wed, 17 Feb 2010 08:25:37 -0800 (PST) From: Malinda Kaushalye <kaushalye(a)yahoo.com> Subject: [rules-users] Insert new facts from RHS To: rules-users(a)lists.jboss.org Message-ID: <817565.1542.qm(a)web56503.mail.re3.yahoo.com> Content-Type: text/plain; charset=utf-8 Hi All, How do I insert new facts/events to the working memory from RHS? rule "myrule" when //Some condition then //Create and Insert some new events/facts to the working memory end Cheers, Malinda ------------------------------ Message: 7 Date: Wed, 17 Feb 2010 13:35:40 -0300 From: Mauricio Salatino <salaboy(a)gmail.com> Subject: Re: [rules-users] Insert new facts from RHS To: Rules Users List <rules-users(a)lists.jboss.org> Message-ID: <efac615a1002170835q3ee9c0d8o8d1efada0ef1e310(a)mail.gmail.com> Content-Type: text/plain; charset="iso-8859-1" just calling insert(new Person()); in the RHS On Wed, Feb 17, 2010 at 1:25 PM, Malinda Kaushalye <kaushalye(a)yahoo.com>wrote: > Hi All, > How do I insert new facts/events to the working memory from RHS? > > rule "myrule" > when > //Some condition > then > > //Create and Insert some new events/facts to the working memory > end > > Cheers, > Malinda > > > > > > _______________________________________________ > rules-users mailing list > rules-users(a)lists.jboss.org > https://lists.jboss.org/mailman/listinfo/rules-users > -- - http://salaboy.wordpress.com - http://www.jbug.com.ar - Salatino "Salaboy" Mauricio - -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.jboss.org/pipermail/rules-users/attachments/20100217/f380292... ------------------------------ Message: 8 Date: Wed, 17 Feb 2010 16:38:35 +0000 From: Enda J Diggins <ejdiggins(a)gmail.com> Subject: Re: [rules-users] Insert new facts from RHS To: Rules Users List <rules-users(a)lists.jboss.org> Message-ID: <55587e551002170838u27e625efqa41ca3973564c91(a)mail.gmail.com> Content-Type: text/plain; charset="iso-8859-1" Hi Malinda, rule "myrule" when //some condition then insert(new Object()); // or Variable var = new Variable(); insert(var); end On Wed, Feb 17, 2010 at 4:25 PM, Malinda Kaushalye <kaushalye(a)yahoo.com>wrote: > Hi All, > How do I insert new facts/events to the working memory from RHS? > > rule "myrule" > when > //Some condition > then > > //Create and Insert some new events/facts to the working memory > end > > Cheers, > Malinda > > > > > > _______________________________________________ > rules-users mailing list > rules-users(a)lists.jboss.org > https://lists.jboss.org/mailman/listinfo/rules-users > -- Enda J Diggins -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.jboss.org/pipermail/rules-users/attachments/20100217/f4adb2c... ------------------------------ _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users End of rules-users Digest, Vol 39, Issue 45 ******************************************* =====-----=====-----===== Notice: The information contained in this e-mail message and/or attachments to it may contain confidential or privileged information. If you are not the intended recipient, any dissemination, use, review, distribution, printing or copying of the information contained in this e-mail message and/or attachments to it are strictly prohibited. If you have received this communication in error, please notify us by reply e-mail or telephone and immediately and permanently delete the message and any attachments. Thank you

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Insert new facts from RHS

by Malinda Kaushalye

Hi All, How do I insert new facts/events to the working memory from RHS? rule "myrule" when //Some condition then //Create and Insert some new events/facts to the working memory end Cheers, Malinda

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Drools Guvnor problem after crash..

by Tharakesh Siddalingaiah

Hello, I am not able to see/edit rules in Drools Guvnor (5.0.0.M5) after JBoss crash. We are using SQL Server 2005 for the rules repository. This was working just fine for over a year now. After restarting the server, I was not able to see any of the rules. When I logged into Guvnor It said that repository appears to be new and asked if I wanted to install the samples. We restored the database to a previous dump and I was able to see the rules if I went in through categories. However, I can't see the rules under the Package view. I also can't build a package nor export the rules as XML. Nor can I search for rules from the Find tab. I have an XML export from a few days ago that looks good but we would loose the history of rule changes. Any ideas on how to get our Guvnor working? thanks, -tk Tharakesh Siddalingaiah Solution Architect GTO GIS Core Banking - PWM IT US Deutsche Bank AG Tel: +1 (410) 895 5275 Mob: +1 (410) 905 2169 tharakesh.siddalingaiah(a)db.com --- This communication may contain confidential and/or privileged information. If you are not the intended recipient (or have received this communication in error) please notify the sender immediately and destroy this communication. Any unauthorized copying, disclosure or distribution of the material in this communication is strictly forbidden. Deutsche Bank does not render legal or tax advice, and the information contained in this communication should not be regarded as such.

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Re: [rules-users] guvnor - dsl rule editor - using ":" in text box

by John Walker

I also have a similar [then] DSL which is trying to set a value. Looks like: [then]Set summary to {summary}=... code here ... As expected, the same problem occurs. Is there a workaround for these two scenarios? Can I set a regex on the DSL for the [when] and [then]? Like: [when]- and var9 matches {v9:.*}=field9!=null, field9 matches "{v9}" [then]Set summary to {summary:.*}=... code here ... I am not very familiar with regex inside the DSL variable placeholders. I've only just seen this in other forum posts. Thanks, John ----------------------------------------------------------------------- Tested it and this is a bug. I made a Jira for it so you can follow it. https://jira.jboss.org/jira/browse/GUVNOR-505 Toni John Walker wrote: > > All, > > > > I have a DSL sentence that looks like this: > > [when]- and var9 matches {v9}=field9!=null, field9 matches "{v9}" > > > > When using the Guvnor guided rule editor, I add the "- and var9 > > matches {v9}" DSL sentence to the rule, giving me a WHEN condition > > like this: > > - and var9 matches [text box] > > > > I want to put a URL in the text box, but anytime I use a value > > containing a colon":", > > I get a popup box with error message "The value [some value with a > > colon] is not valid for this field" > > > > Example: > > DSL in rule, using guvnor guided editor: "- and var9 matches > > [http://google.com]" > > Popup error message: "The value http://google.com is not valid for > > this field" > > > > What needs to happen to allow a value with a colon? I did not have > > this problem with drools4 and JBRMS. > > > > Thanks, > > John

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getWorkingMemoryEntryPoint returns NULL

by Malinda Kaushalye

Dear All, It appears to be that the getWorkingMemoryEntryPoint() method returns NULL in my code given below. Note that EventProcessingOption = STREAM and ClockType = "realtime" if that is of any importance. Cheers, Malinda public class EventKnowledgeBase { private KnowledgeBase kbase = null; private StatefulKnowledgeSession ksession = null; private WorkingMemoryEntryPoint globalStream = null; public EventKnowledgeBase() throws Exception { super(); kbase = readKnowledgeBase(); ksession = kbase.newStatefulKnowledgeSession(); KnowledgeBaseConfiguration config = KnowledgeBaseFactory.newKnowledgeBaseConfiguration(); config.setOption( EventProcessingOption.STREAM ); KnowledgeSessionConfiguration kbSessionConfig = KnowledgeBaseFactory.newKnowledgeSessionConfiguration(); kbSessionConfig.setOption( ClockTypeOption.get("realtime") ); globalStream = ksession.getWorkingMemoryEntryPoint( "global" ); if(null == globalStream){ System.out.println("WorkingMemoryEntryPoint is Null"); //YEAH..! IT RETURNS NULL } } }

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Negating a result

by djb

Hi, I've been playing with Drools for a few weeks now, using rule templates, but using mostly Java with eval(). I am now trying to re-write my program in DRL, (to get that sweet RETE working). I've got a situation where my rules are either "may not be" or "must be" in the condition. In Java, I work out everything assuming "may not be", and in the last line, return (negationMod ? result : !result); But in DRL... i'm a bit lost. I guess I'll have to split up the rule templates, one for "may not be" and one for "must be"? Is there a better way? Regards Daniel -- View this message in context: http://n3.nabble.com/Negating-a-result-tp212559p212559.html Sent from the Drools - User mailing list archive at Nabble.com.

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guvnor - dsl rule editor - using ":" in text box

by John Walker

All, I have a DSL sentence that looks like this: [when]- and var9 matches {v9}=field9!=null, field9 matches "{v9}" When using the Guvnor guided rule editor, I add the "- and var9 matches {v9}" DSL sentence to the rule, giving me a WHEN condition like this: - and var9 matches [text box] I want to put a URL in the text box, but anytime I use a value containing a colon":", I get a popup box with error message "The value [some value with a colon] is not valid for this field" Example: DSL in rule, using guvnor guided editor: "- and var9 matches [http://google.com]" Popup error message: "The value http://google.com is not valid for this field" What needs to happen to allow a value with a colon? I did not have this problem with drools4 and JBRMS. Thanks, John

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design patterns/common problems

by Mark Proctor

I've started to add some design patterns/common problems to a wiki page at codehaus. Please start adding more :) http://docs.codehaus.org/display/LOGICABYSS/Design+Patterns Current titles are: * Min or Max Values <http://docs.codehaus.org/display/LOGICABYSS/Min+or+Max+Values> * Policy Encapsulation <http://docs.codehaus.org/display/LOGICABYSS/Policy+Encapsulation> * Policy Chain Management <http://docs.codehaus.org/display/LOGICABYSS/Policy+Chain+Management> * Validating Derived Objects Before Insertion <http://docs.codehaus.org/display/LOGICABYSS/Validating+Derived+Objects+Be...> * Goals <http://docs.codehaus.org/display/LOGICABYSS/Goals> * Simulate the Passage of Time <http://docs.codehaus.org/display/LOGICABYSS/Simulate+the+Passage+of+Time> * Delayed Modifications <http://docs.codehaus.org/display/LOGICABYSS/Delayed+Modifications> Mark

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Similar question: changing operator from < to >

by djb

Hi, I just asked a question about conditionally negating conditions, in the DRL... and this question is similar, since it comes down to the lack of a ternary operator. I have rules where "LINK_OPERATOR" is either representative of >, == or <. I am using a rule template, and the problem is that it's not the parameters that change, but the conditions themselves that change based on this LINK_OPERATOR. If I call a function, then my chances for the RETE constant time evaluation is shot. Since this is a very fundamental part of the rules, must I again split my rule template into 3 parts? Then with the negation option, I'll need to double that to 6 templates? And if I have more operators, I'll have to multiply that in too? So, if speed is important, should I split the template? Regards, Daniel -- View this message in context: http://n3.nabble.com/Similar-question-changing-operator-from-to-tp212583p... Sent from the Drools - User mailing list archive at Nabble.com.

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Verifier Question

by J Michael Dean

Does anyone have a succinct example of using verifier on a DRL or knowledge base? This is a nice feature in Guvnor and I thought it should be easy in the Eclipse environment to create a simple plugin that would gobble up the knowledge base and spit out the report. Thanks. - Mike

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rules-users February 2010