[rules-dev] Re: rules-dev Digest, Vol 25, Issue 19

Send rules-dev mailing list submissions to rules-dev(a)lists.jboss.org To subscribe or unsubscribe via the World Wide Web, visit https://lists.jboss.org/mailman/listinfo/rules-dev or, via email, send a message with subject or body 'help' to rules-dev-request(a)lists.jboss.org You can reach the person managing the list at rules-dev-owner(a)lists.jboss.org When replying, please edit your Subject line so it is more specific than "Re: Contents of rules-dev digest..." Today's Topics: 1. Re: [rules-users] Drools 5.0 M5 (ekkehard) 2. Re: use of declared facts (Michal Bali) 3. Re: use of declared facts (Edson Tirelli) 4. Re: use of declared facts (Michal Bali) ---------------------------------------------------------------------- Message: 1 Date: Tue, 27 Jan 2009 08:03:01 +0100 From: ekkehard <ekkehard(a)gentz-software.de&gt; Subject: [rules-dev] Re: [rules-users] Drools 5.0 M5 To: Rules Users List <rules-users(a)lists.jboss.org&gt; Cc: Rules Dev List <rules-dev(a)lists.jboss.org&gt; Message-ID: <497EB1A5.1090905(a)gentz-software.de&gt; Content-Type: text/plain; charset="iso-8859-1" Mark Proctor schrieb: > http://blog.athico.com/2009/01/drools-50-m5-new-and-noteworthy-release.html > > http://www.jboss.org/drools/downloads.html > > The next release should be the candidate release, all modules now seem > to be working, we are now just working on cleaning things up and > improving and updating documentation. > > Mark > > _______________________________________________ > rules-users mailing list > rules-users(a)lists.jboss.org > https://lists.jboss.org/mailman/listinfo/rules-users > Hi Mark, Drools 5 seems to be a really great product. Maybe 18 months ago I evaluated rules engines and business process engines and made my decision to use jbpm together with Drools. Now - in 3 weeks or so its time to really integrate processes and rules into my application (ERP solution for small and medium-sized-companies) - my server is ready (OSGI - EJB3) and my UI (Eclipse Riena based). Core parts of the OSGI client-server app will be Open Source. Last months I always noticed the problem for business people to understand the differences between business processes and rules, because from the point-of-view of business use-cases they are integrated. why are there two tools / frameworks to manage the same thing ? For me the main reason to use both was persistence of long running processes and manual tasks in the past only available in business process engine. Now I read the documentation of Drools 5 and noticed that all is availabe in ONE product: Drools 5. Thats really great news - I hope I understood all well and I'll give it a try to do it with Drools only. This gives me a better feeling than my previous decision. Thanks for all your work. ekke -- ekkehard gentz software-architect homepage: http://www.gentz-software.de opensource: http://ekkehard.org blog (en): http://ekkes-corner.org blog (de): http://ekkes-ecke.org -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.jboss.org/pipermail/rules-dev/attachments/20090127/64d6d492/... ------------------------------ Message: 2 Date: Tue, 27 Jan 2009 09:34:55 +0000 From: Michal Bali <michalbali(a)gmail.com&gt; Subject: Re: [rules-dev] use of declared facts To: Rules Dev List <rules-dev(a)lists.jboss.org&gt; Message-ID: <58f4ed90901270134s29ee99f2p5357152eae05f260(a)mail.gmail.com&gt; Content-Type: text/plain; charset="iso-8859-1" Look at this unit test for some examples: http://anonsvn.jboss.org/repos/labs/labs/jbossrules/trunk/drools-compiler... // Retrieve the generated fact type FactType cheeseFact = ruleBase.getFactType( "org.drools.generatedbeans.Cheese" ); // Create a new Fact instance Object cheese = cheeseFact.newInstance(); // Set a field value using the more verbose method chain... // should we add short cuts? // cheeseFact.getField( "type" ).getFieldAccessor().setValue( cheese, // "stilton" ); cheeseFact.set( cheese, "type", "stilton" ); assertEquals( "stilton", cheeseFact.get( cheese, "type" ) ); On Tue, Jan 27, 2009 at 2:02 AM, Oleg Zenzin <zenzin(a)intalio.com&gt; wrote: > There's now possibility to declare facts in the drl, like: > > declare Person > name: String > age: int > end > > My question is how do I instantiate this fact object during runtime? Do I > still need to have class Person compiled and existing somewhere in > classpath, or there's a helper class which I can use "fake the fact", > something like: > > FakeFact person = FakeFact("Person"); > person.setField("name", "Oleg"); > person.setField("age", "42"); > session.insert(person); > > Or there's another nicer way? > > Thank you, > -Oleg Zenzin > > _______________________________________________ > rules-dev mailing list > rules-dev(a)lists.jboss.org > https://lists.jboss.org/mailman/listinfo/rules-dev > > -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.jboss.org/pipermail/rules-dev/attachments/20090127/2b1899d6/... ------------------------------ Message: 3 Date: Tue, 27 Jan 2009 09:31:32 -0500 From: Edson Tirelli <tirelli(a)post.com&gt; Subject: Re: [rules-dev] use of declared facts To: Rules Dev List <rules-dev(a)lists.jboss.org&gt; Message-ID: <e6dd5ba30901270631j5c6fda5bje89a90f1fa1e3ebd(a)mail.gmail.com&gt; Content-Type: text/plain; charset="iso-8859-1" Michal is correct from the point of view of the application. That is required because the actual classes are generated at compile time and not visible to the application classpath. Although, that is not the only way. Inside your rules, they are visible and you instantiate them the same way as you instantiate any other java Pojo: rule xyz when // sometihng then Person p = new Person(); p.setName( "Bob" ); insert( p ); end Also, if you use Guvnor to define your model, Guvnor is capable of generating a jar file for you with the generated classes. This way you can download the jar and add it to the classpath of your application and use it as any POJOs too. []s Edson 2009/1/27 Michal Bali <michalbali(a)gmail.com&gt; > Look at this unit test for some examples: > > http://anonsvn.jboss.org/repos/labs/labs/jbossrules/trunk/drools-compiler... > > // Retrieve the generated fact type > FactType cheeseFact = ruleBase.getFactType( > "org.drools.generatedbeans.Cheese" ); > > // Create a new Fact instance > Object cheese = cheeseFact.newInstance(); > > // Set a field value using the more verbose method chain... > // should we add short cuts? > // cheeseFact.getField( "type" > ).getFieldAccessor().setValue( cheese, > // > "stilton" ); > > cheeseFact.set( cheese, > "type", > "stilton" ); > assertEquals( "stilton", > cheeseFact.get( cheese, > "type" ) ); > > > On Tue, Jan 27, 2009 at 2:02 AM, Oleg Zenzin <zenzin(a)intalio.com&gt; wrote: > >> There's now possibility to declare facts in the drl, like: >> >> declare Person >> name: String >> age: int >> end >> >> My question is how do I instantiate this fact object during runtime? Do I >> still need to have class Person compiled and existing somewhere in >> classpath, or there's a helper class which I can use "fake the fact", >> something like: >> >> FakeFact person = FakeFact("Person"); >> person.setField("name", "Oleg"); >> person.setField("age", "42"); >> session.insert(person); >> >> Or there's another nicer way? >> >> Thank you, >> -Oleg Zenzin >> >> _______________________________________________ >> rules-dev mailing list >> rules-dev(a)lists.jboss.org >> https://lists.jboss.org/mailman/listinfo/rules-dev >> >> > > _______________________________________________ > rules-dev mailing list > rules-dev(a)lists.jboss.org > https://lists.jboss.org/mailman/listinfo/rules-dev > > -- Edson Tirelli JBoss Drools Core Development JBoss, a division of Red Hat @ www.jboss.com -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.jboss.org/pipermail/rules-dev/attachments/20090127/1f702615/... ------------------------------ Message: 4 Date: Tue, 27 Jan 2009 15:38:47 +0000 From: Michal Bali <michalbali(a)gmail.com&gt; Subject: Re: [rules-dev] use of declared facts To: Rules Dev List <rules-dev(a)lists.jboss.org&gt; Message-ID: <58f4ed90901270738i36997aa6t38e5b800c2180cd8(a)mail.gmail.com&gt; Content-Type: text/plain; charset="iso-8859-1" Thanks Edson, BTW, I've tried to instantiate an internal fact in a rule with MVEL dialect but it didn't worked. I've tried this in M4. I' haven't tried it yet in M5. Is this a known issue or should I create a new JIRA with test case? Best Regards, Michal On Tue, Jan 27, 2009 at 2:31 PM, Edson Tirelli <tirelli(a)post.com&gt; wrote: > > Michal is correct from the point of view of the application. That is > required because the actual classes are generated at compile time and not > visible to the application classpath. > > Although, that is not the only way. Inside your rules, they are visible > and you instantiate them the same way as you instantiate any other java > Pojo: > > rule xyz > when > // sometihng > then > Person p = new Person(); > p.setName( "Bob" ); > insert( p ); > end > > Also, if you use Guvnor to define your model, Guvnor is capable of > generating a jar file for you with the generated classes. This way you can > download the jar and add it to the classpath of your application and use it > as any POJOs too. > > []s > Edson > > > 2009/1/27 Michal Bali <michalbali(a)gmail.com&gt; > > Look at this unit test for some examples: >> >> http://anonsvn.jboss.org/repos/labs/labs/jbossrules/trunk/drools-compiler... >> >> // Retrieve the generated fact type >> FactType cheeseFact = ruleBase.getFactType( >> "org.drools.generatedbeans.Cheese" ); >> >> // Create a new Fact instance >> Object cheese = cheeseFact.newInstance(); >> >> // Set a field value using the more verbose method chain... >> // should we add short cuts? >> // cheeseFact.getField( "type" >> ).getFieldAccessor().setValue( cheese, >> // >> "stilton" ); >> >> cheeseFact.set( cheese, >> "type", >> "stilton" ); >> assertEquals( "stilton", >> cheeseFact.get( cheese, >> "type" ) ); >> >> >> On Tue, Jan 27, 2009 at 2:02 AM, Oleg Zenzin <zenzin(a)intalio.com&gt; wrote: >> >>> There's now possibility to declare facts in the drl, like: >>> >>> declare Person >>> name: String >>> age: int >>> end >>> >>> My question is how do I instantiate this fact object during runtime? Do I >>> still need to have class Person compiled and existing somewhere in >>> classpath, or there's a helper class which I can use "fake the fact", >>> something like: >>> >>> FakeFact person = FakeFact("Person"); >>> person.setField("name", "Oleg"); >>> person.setField("age", "42"); >>> session.insert(person); >>> >>> Or there's another nicer way? >>> >>> Thank you, >>> -Oleg Zenzin >>> >>> _______________________________________________ >>> rules-dev mailing list >>> rules-dev(a)lists.jboss.org >>> https://lists.jboss.org/mailman/listinfo/rules-dev >>> >>> >> >> _______________________________________________ >> rules-dev mailing list >> rules-dev(a)lists.jboss.org >> https://lists.jboss.org/mailman/listinfo/rules-dev >> >> > > > -- > Edson Tirelli > JBoss Drools Core Development > JBoss, a division of Red Hat @ www.jboss.com > > _______________________________________________ > rules-dev mailing list > rules-dev(a)lists.jboss.org > https://lists.jboss.org/mailman/listinfo/rules-dev > > -------------- next part -------------- An HTML attachment was scrubbed... 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