[rules-users] StatefulKnowledgeSession Vs StatefulSession
I used a KnowledgeBuilder ro read the resources (DSL DSLR files) Then created a KnowledgeBase and created a StatefulKnowledgeSession out of the KnowledgeBase. The StatefulKnowledgeSession was used to start the process and fire all rules. Then I realized I was not able to access the RuleBase from StatefulKnowledgeSession. So, now I create a RuleBase, then a PackageBuilder, add the resources to the packageBuilder, then add the package to the RuleBase and create a StatefulSession out of the RuleBase. This statefulsession is used to start the process and fire all rules. Can someone explain to me whats the difference in the above 2 methods of firing the rules. Whats the difference between StatefulKnowledgeSession StatefulSession. -- View this message in context: http://old.nabble.com/StatefulKnowledgeSession-Vs-StatefulSession-tp26511606p26511606.html Sent from the drools - user mailing list archive at Nabble.com. ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] StatefulKnowledgeSession Vs StatefulSession
So how can I access RuleBase from StatefulKnowledgeSession? I cant find a API that links RuleBase and StatefulKnowledgeSession interface. I need to get hold of each individual rule from StatefulKnowledgeSession DeepakA wrote: I used a KnowledgeBuilder ro read the resources (DSL DSLR files) Then created a KnowledgeBase and created a StatefulKnowledgeSession out of the KnowledgeBase. The StatefulKnowledgeSession was used to start the process and fire all rules. Then I realized I was not able to access the RuleBase from StatefulKnowledgeSession. So, now I create a RuleBase, then a PackageBuilder, add the resources to the packageBuilder, then add the package to the RuleBase and create a StatefulSession out of the RuleBase. This statefulsession is used to start the process and fire all rules. Can someone explain to me whats the difference in the above 2 methods of firing the rules. Whats the difference between StatefulKnowledgeSession StatefulSession. -- View this message in context: http://old.nabble.com/StatefulKnowledgeSession-Vs-StatefulSession-tp26511606p26515717.html Sent from the drools - user mailing list archive at Nabble.com. ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Query on performance when adding/removing rules
any suggestions regarding the impact on performance??? DeepakA wrote: We have a set of rules (lets call them old rules) running in our strategy server. A new requirement is that - the client can make calls to the server, at that point new rules need to be loaded in the workin memory (at run time), if the rules get executed then the rules need to be removed from the WorkinMemory (after the consequence section is executed) I would like to know if repeated adding and removing of rules in the working memory will lead to performance issues? i.e. when the new rules are added/removed the old-set-of rules will still be evaluated in the background, will this hamper performance? -- View this message in context: http://old.nabble.com/Query-on-performance-when-adding-removing-rules-tp26475542p26493210.html Sent from the drools - user mailing list archive at Nabble.com. ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
[rules-users] Query on performance when adding/removing rules
We have a set of rules (lets call them old rules) running in our strategy server. A new requirement is that - the client can make calls to the server, at that point new rules need to be loaded in the workin memory (at run time), if the rules get executed then the rules need to be removed from the WorkinMemory (after the consequence section is executed) I would like to know if repeated adding and removing of rules in the working memory will lead to performance issues? i.e. when the new rules are added/removed the old-set-of rules will still be evaluated in the background, will this hamper performance? -- View this message in context: http://old.nabble.com/Query-on-performance-when-adding-removing-rules-tp26475542p26475542.html Sent from the drools - user mailing list archive at Nabble.com. ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
[rules-users] exception while adding a packageDescr to a PackageBuilder
I am trying to add a rule to a package. First I create a PackageDescr, then I create a RuleDescr and set some properties in it com.deepak.development.Trade class is loaded into the working memory before I try to create this rule Upon doing a DrlDump, I get the following (which is correctly formed; if I copy paste this in a drl file, the rule gets executed as expected) rule Added new Rule when trade : com.deepak.development.Trade( ) then System.out.println(Whatever);end // // CODE // //Create a PackageDescr //packages[0] is the package that is already available, //since I create a new PackageDescr with same name, //I expect the new rule to be appended to the existing package final PackageDescr packageDescr = new PackageDescr(new Package(packages[0].getName()).getName()); //Create a RuleDescr RuleDescr ruleDescr = new RuleDescr(Added new Rule); String consequence = System.out.println(\Whatever\);; AndDescr lhs = new AndDescr(); ruleDescr.setLhs( lhs ); final PatternDescr pattern = new PatternDescr( com.deepak.development.Trade.class.getName(),trade); lhs.addDescr( pattern ); ruleDescr.setConsequence( consequence ); PackageBuilder builder = new PackageBuilder(packages[0]); packageDescr.addRule( ruleDescr ); DrlDumper drlDumper = new DrlDumper(); System.out.println(Dumping Package Descriptor for all rules: + drlDumper.dump(packageDescr)); //Nullpointer Exception caught builder.addPackage(packageDescr); ruleBase.addPackage(builder.getPackage()); Doing a debug in eclipse I can see that a NullPointerException is caught in the line ###builder.addPackage(packageDescr)### Is there any other property I need to set in packageDescr before it can be added to a builder? I can see the following in the debug section of eclipse PackageStore.read(String) line: 58 The following is shown in the Variables side (in eclispe debug mode) [corresponds to PackageStore] thisPackageStore (id=13923) errors ArrayListE (id=15898) elementData Object[10] (id=19840) modCount0 size0 javaDialectRuntimeData null resourceNamejava/lang/Object.class (id=13925) count 22 hash0 offset 0 value(id=15896) clazz null -- View this message in context: http://old.nabble.com/exception-while-adding-a-packageDescr-to-a-PackageBuilder-tp26455685p26455685.html Sent from the drools - user mailing list archive at Nabble.com. ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] exception while adding a packageDescr to a PackageBuilder
I can confirm that adding a PackageDescr to PackageBuilder works with drools-4.0.7 but throws a NullPointerException with Drools 5.0 Drools 5.1.0.M1 DeepakA wrote: I am trying to add a rule to a package. First I create a PackageDescr, then I create a RuleDescr and set some properties in it com.deepak.development.Trade class is loaded into the working memory before I try to create this rule Upon doing a DrlDump, I get the following (which is correctly formed; if I copy paste this in a drl file, the rule gets executed as expected) rule Added new Rule when trade : com.deepak.development.Trade( ) then System.out.println(Whatever);end // // CODE // //Create a PackageDescr //packages[0] is the package that is already available, //since I create a new PackageDescr with same name, //I expect the new rule to be appended to the existing package final PackageDescr packageDescr = new PackageDescr(new Package(packages[0].getName()).getName()); //Create a RuleDescr RuleDescr ruleDescr = new RuleDescr(Added new Rule); String consequence = System.out.println(\Whatever\);; AndDescr lhs = new AndDescr(); ruleDescr.setLhs( lhs ); final PatternDescr pattern = new PatternDescr( com.deepak.development.Trade.class.getName(),trade); lhs.addDescr( pattern ); ruleDescr.setConsequence( consequence ); PackageBuilder builder = new PackageBuilder(packages[0]); packageDescr.addRule( ruleDescr ); DrlDumper drlDumper = new DrlDumper(); System.out.println(Dumping Package Descriptor for all rules: + drlDumper.dump(packageDescr)); //Nullpointer Exception caught builder.addPackage(packageDescr); ruleBase.addPackage(builder.getPackage()); Doing a debug in eclipse I can see that a NullPointerException is caught in the line ###builder.addPackage(packageDescr)### Is there any other property I need to set in packageDescr before it can be added to a builder? I can see the following in the debug section of eclipse PackageStore.read(String) line: 58 The following is shown in the Variables side (in eclispe debug mode) [corresponds to PackageStore] this PackageStore (id=13923) errors ArrayListE (id=15898) elementData Object[10] (id=19840) modCount0 size0 javaDialectRuntimeData null resourceName java/lang/Object.class (id=13925) count 22 hash0 offset 0 value(id=15896) clazz null -- View this message in context: http://old.nabble.com/exception-while-adding-a-packageDescr-to-a-PackageBuilder-tp26455685p26456520.html Sent from the drools - user mailing list archive at Nabble.com. ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] exception while adding a packageDescr to a PackageBuilder
It works in Drools 5.0 after setting a value for Namespace in PackageDescr DeepakA wrote: I can confirm that adding a PackageDescr to PackageBuilder works with drools-4.0.7 but throws a NullPointerException with Drools 5.0 Drools 5.1.0.M1 DeepakA wrote: I am trying to add a rule to a package. First I create a PackageDescr, then I create a RuleDescr and set some properties in it com.deepak.development.Trade class is loaded into the working memory before I try to create this rule Upon doing a DrlDump, I get the following (which is correctly formed; if I copy paste this in a drl file, the rule gets executed as expected) rule Added new Rule when trade : com.deepak.development.Trade( ) then System.out.println(Whatever);end // // CODE // //Create a PackageDescr //packages[0] is the package that is already available, //since I create a new PackageDescr with same name, //I expect the new rule to be appended to the existing package final PackageDescr packageDescr = new PackageDescr(new Package(packages[0].getName()).getName()); //Create a RuleDescr RuleDescr ruleDescr = new RuleDescr(Added new Rule); String consequence = System.out.println(\Whatever\);; AndDescr lhs = new AndDescr(); ruleDescr.setLhs( lhs ); final PatternDescr pattern = new PatternDescr( com.deepak.development.Trade.class.getName(),trade); lhs.addDescr( pattern ); ruleDescr.setConsequence( consequence ); PackageBuilder builder = new PackageBuilder(packages[0]); packageDescr.addRule( ruleDescr ); DrlDumper drlDumper = new DrlDumper(); System.out.println(Dumping Package Descriptor for all rules: + drlDumper.dump(packageDescr)); //Nullpointer Exception caught builder.addPackage(packageDescr); ruleBase.addPackage(builder.getPackage()); Doing a debug in eclipse I can see that a NullPointerException is caught in the line ###builder.addPackage(packageDescr)### Is there any other property I need to set in packageDescr before it can be added to a builder? I can see the following in the debug section of eclipse PackageStore.read(String) line: 58 The following is shown in the Variables side (in eclispe debug mode) [corresponds to PackageStore] this PackageStore (id=13923) errors ArrayListE (id=15898) elementData Object[10] (id=19840) modCount0 size0 javaDialectRuntimeData null resourceName java/lang/Object.class (id=13925) count 22 hash0 offset 0 value(id=15896) clazznull -- View this message in context: http://old.nabble.com/exception-while-adding-a-packageDescr-to-a-PackageBuilder-tp26455685p26458012.html Sent from the drools - user mailing list archive at Nabble.com. ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
[rules-users] update a shadow object in working memory
All, I was investigating why the my rule was running into a loop, even though I had a no-loop true. I was doing an session.update to update the fact in the working memory, the fact was updated (removed and added) in the working memory. I tried commenting the session.update and I can see that the shadow object in the working memory still got updated and reflected the latest value set within the java code. The looping has also stopped. Can some one clarify if its possible to update the object in working memory without calling the update method. -- View this message in context: http://old.nabble.com/update-a-shadow-object-in-working-memory-tp26338645p26338645.html Sent from the drools - user mailing list archive at Nabble.com. ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
