Re: [rules-users] Building our own UI for Drools
Thanks for the information. Deploy multiple GUNVOR instances can't resolve our issue as we have thousands of companies as our customer, each company will share the common part of our applications and meantime they can customize objects/fields they have permission with, this will be terrible if we go with the separate/dedicate deployment and basically we think that will be not manageable... What we are looking for is, be able to share a common collection of ruleset and at the same time, be able to define their custom rules with their customization. Ivan - Ivan, your Panda, forever -- View this message in context: http://drools.46999.n3.nabble.com/Building-our-own-UI-for-Drools-tp3508849p3512037.html Sent from the Drools: User forum 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] Building our own UI for Drools
On 2011/11/16 16:37, kapokfly wrote: Thanks for the information. Deploy multiple GUNVOR instances can't resolve our issue as we have thousands of companies as our customer, each company will share the common part of our applications and meantime they can customize objects/fields they have permission with, this will be terrible if we go with the separate/dedicate deployment and basically we think that will be not manageable... What we are looking for is, be able to share a common collection of ruleset and at the same time, be able to define their custom rules with their customization. At the moment, it is possible to achieve this by using role-based-authorization in Guvnor. I.e., you create some common packages that are designed to be shared by everyone. You assign package-readonly permissions to everyone so that they have read-only access to these common packages. You can also use Global Area to achieve same effect. Essentially Global area is a special package that can be shared by all packages. Then each user has package-admin permission for their own packages. The Workspace as I mentioned early will provide a more completely isolated environment for each user when multiple users are sharing one instance of Guvnor. However we dont have any concrete stories planned for this yet. Cheers, Jervis Ivan - Ivan, your Panda, forever -- View this message in context: http://drools.46999.n3.nabble.com/Building-our-own-UI-for-Drools-tp3508849p3512037.html Sent from the Drools: User forum 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 mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
[rules-users] Regular Expression
Can i have a regular expression in which the case of the word is not a problem Like any string starting with START|Start|start|STart can be matched am able to match only the rules starting with either START or start -- View this message in context: http://drools.46999.n3.nabble.com/Regular-Expression-tp3512138p3512138.html Sent from the Drools: User forum 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] Accumulate / collect
You already have 2 accumulate functions to do what you need: - collectList - collectSet So, your rule will look like this: $countries : HashSet(empty == false) from accumulate (City($name matches X.*, $country : country), collectSet($country)) Best Regards, Esteban Aliverti - Developer @ http://www.plugtree.com - Blog @ http://ilesteban.wordpress.com 2011/11/15 Wolfgang Laun wolfgang.l...@gmail.com This is possible with an accumulate where you code the init/action/result explicily. Perhaps not fully out of the box but a box that holds everything would be rather big, wouldn't it? ;-) -W 2011/11/15 Bruno Freudensprung bruno.freudenspr...@temis.com ** Hi all, There is something I can't express using collect or accumulate and I would like to have your opinion. Let's imagine I have the following types : # a country type *declare Country name : String end * # a city type holding a reference to its country *declare City name : String country : Country end * Let's imagine I have all Country and City objects into the working memory. I want to get the set of Countries corresponding to Cities whose name starts with X. I have the impression that I need a kind of (nonexistent right?) collect syntax that would look like the accumulate syntax (a kind of anonymous accumulate function): # meaning I want to collect $country objects and not City objects $countries : HashSet() from collect (City($name matches X.*, $country : country)*, $country*) Or a home made accumulate function that builds a set of countries: # custom buildset accumulate function $countries : HashSet() from accumulate (City($name matches X.*, $country : country), *buildset*($country)) Do you see any other (possibly out of the box) solution? Many thanks in advance for your answers, Best regards, Bruno. ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Accumulate / collect
Hi Wolfgang, hi Estaban, Many thanks for your insights! I'll stick to a custom accumulate function since it is more consice than the init/action/result approach. And since I am using Drools 5.1.1, I'll create functions named collectList and collectSet to be future proof :-) Best regards, Bruno. Le 16/11/2011 10:34, Esteban Aliverti a écrit : You already have 2 accumulate functions to do what you need: * collectList * collectSet So, your rule will look like this: $countries : HashSet(empty == false) from accumulate (City($name matches X.*, $country : country), collectSet($country)) Best Regards, Esteban Aliverti - Developer @ http://www.plugtree.com http://www.plugtree.com - Blog @ http://ilesteban.wordpress.com ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Regular Expression
Start any regular expression with (?i) and it will ignore case: (?i)start This can be found in java.util.regex.Pattern's javadoc. -W On 16 November 2011 10:32, rahulkrishnan rahulkrishn...@gmail.com wrote: Can i have a regular expression in which the case of the word is not a problem Like any string starting with START|Start|start|STart can be matched am able to match only the rules starting with either START or start -- View this message in context: http://drools.46999.n3.nabble.com/Regular-Expression-tp3512138p3512138.html Sent from the Drools: User forum 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 mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] I have 1000 rules, i want to create each 100 as one set , and fire each set when necessary
Depending on the cohesion of your rules you could have multiple solutions to this scenario. 1. Having different knowledge bases each one containing a set of rules. A knowledge base is basically a collection of rules, so you could have 10 different kbases. The issue here is that the set of Facts (the objects you insert in a session) is not going to be shared between the different sessions of your different kbases. So you will need to insert them in the corresponding ksession. 2. Having 1 kbase but separate the rule *execution* using agenda-groups. Please read the documentation for further information about agenda-group: http://docs.jboss.org/drools/release/5.3.0.Final/drools-expert-docs/html_single/index.html 3. Use jBPM in conjunction with rule-flow-group attribute in your rules to control the execution flow of your rules. Best Regards, Esteban Aliverti - Developer @ http://www.plugtree.com - Blog @ http://ilesteban.wordpress.com On Wed, Nov 16, 2011 at 7:37 AM, srinivasasanda srinivasasa...@gmail.comwrote: Hi EveryOne.. Please if any one know give me some link, or sample example, or suggest how to do this, Thank u in advance I am Having 1000 rules and i want to make each 100 rules as one set, so i will 10 set , can i fire only 1 set when necessary, can i add a new rule to existing set dynamically, what is necessary of making more than one drl files, and how to load all drl at once. I am very new to drools.. Please suggest me some solution -- View this message in context: http://drools.46999.n3.nabble.com/I-have-1000-rules-i-want-to-create-each-100-as-one-set-and-fire-each-set-when-necessary-tp3511864p3511864.html Sent from the Drools: User forum 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 mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Accumulate / collect
As far as I know, these 2 functions already exist in 5.1.1. Don't they? Best Regards, Esteban Aliverti - Developer @ http://www.plugtree.com - Blog @ http://ilesteban.wordpress.com 2011/11/16 Bruno Freudensprung bruno.freudenspr...@temis.com ** Hi Wolfgang, hi Estaban, Many thanks for your insights! I'll stick to a custom accumulate function since it is more consice than the init/action/result approach. And since I am using Drools 5.1.1, I'll create functions named collectList and collectSet to be future proof :-) Best regards, Bruno. Le 16/11/2011 10:34, Esteban Aliverti a écrit : You already have 2 accumulate functions to do what you need: - collectList - collectSet So, your rule will look like this: $countries : HashSet(empty == false) from accumulate (City($name matches X.*, $country : country), collectSet($country)) Best Regards, Esteban Aliverti - Developer @ http://www.plugtree.com - Blog @ http://ilesteban.wordpress.com ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Accumulate / collect
Just tested and... you are right (although they are not mentioned in the documentation)! :-). Great! Thanks a lot Esteban! Bruno. Le 16/11/2011 10:50, Esteban Aliverti a écrit : As far as I know, these 2 functions already exist in 5.1.1. Don't they? Best Regards, Esteban Aliverti - Developer @ http://www.plugtree.com http://www.plugtree.com - Blog @ http://ilesteban.wordpress.com ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Accumulate / collect
Oh yes, you are right! They were not documented in 5.1.1! Best Regards, Esteban Aliverti - Developer @ http://www.plugtree.com - Blog @ http://ilesteban.wordpress.com 2011/11/16 Bruno Freudensprung bruno.freudenspr...@temis.com ** Just tested and... you are right (although they are not mentioned in the documentation)! :-). Great! Thanks a lot Esteban! Bruno. Le 16/11/2011 10:50, Esteban Aliverti a écrit : As far as I know, these 2 functions already exist in 5.1.1. Don't they? Best Regards, Esteban Aliverti - Developer @ http://www.plugtree.com - Blog @ http://ilesteban.wordpress.com ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Guvnor 5.3 : Guided Rule Editor : mixing formula and field constraint in same pattern makes editor crash
Done : GUVNOR-1753 But I think I don't have the rigths to assign someone to it ... - Mail original - De: Michael Anstis michael.ans...@gmail.com À: Rules Users List rules-users@lists.jboss.org Envoyé: Mardi 15 Novembre 2011 19:08:18 Objet: Re: [rules-users] Guvnor 5.3 : Guided Rule Editor : mixing formula and field constraint in same pattern makes editor crash Yes, agreed. Please raise a JIRA, https://issues.jboss.org/browse/GUVNOR , and assign to me. Thanks, Mike 2011/11/15 Vincent LEGENDRE vincent.legen...@eurodecision.com Hi, As said in the subject mixing formula and field constraint in same pattern makes the guided editor crash. I had rules in 5.2, which was using such constructions, ie normal constraint for normal tests, and sometime a formula (which transform into in-pattern eval(...)) These rules cannot be opened by guvnor 5.3, but compiles. When trying to rewrite the same rule in 5.3, everything is well until I add a formula constraint in a Pattern already having a normal constraint (or a normal after a formula). If I let only one test type, all is fine. Otherwise, the current condition becomes empty, the action part disappears, and there is no error message in logs It seems like a bug to me. Agreed ? I could add my eval outside the pattern, but I also use such constructs in some accumulate patterns ... and I don't have any solution for them (except writing all that stuff directly in DRL format ...). ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
[rules-users] Drools server = get a query result
Hi, i'm new to drools so excuse me if i'm asking newbie question. For a project I insert via rest service a list of object to drools server, in a stateless session - no need to use a stateful session. The rules are fired and new objects are inserted. ex : rule 1 when $c : condition() then insert(new FiredRule(my rule 1 fired, $c)) end I also have a query who gets all the FiredRule query get fired rules firedRule : FiredRule() end My problem is that i can't get results from query when i'm in stateless mode. It works in stateful mode, but I need drools to work only with object I send via rest service at time t. I don't want them store in in the knowledge base and be reused for a future request. I'm block here. I send via json the batch-execution command with insert-elements and query = name:get fired rules,out-identifier:rules and I have an Exception when I set an out-identifier to fire-all-rules 11:26:00,552 ERROR [DefaultErrorHandler] Failed delivery for exchangeId: 949a5873-d146-4ad3-bc9c-d0dd9f7bbc81. Exhausted after delivery attempt: 1 caught: java.lang.NullPointerException java.lang.NullPointerException at org.drools.command.runtime.rule.FireAllRulesCommand.execute(FireAllRulesCommand.java:110) at org.drools.command.runtime.rule.FireAllRulesCommand.execute(FireAllRulesCommand.java:32) at org.drools.command.runtime.BatchExecutionCommandImpl.execute(BatchExecutionCommandImpl.java:155) at org.drools.command.runtime.BatchExecutionCommandImpl.execute(BatchExecutionCommandImpl.java:76) at org.drools.impl.StatelessKnowledgeSessionImpl.execute(StatelessKnowledgeSessionImpl.java:265) at org.drools.camel.component.DroolsExecuteProducer.process(DroolsExecuteProducer.java:100) When I test my case with java, I can get my query results, so I am led to think that it is a problem on server side, maybe jars in the lib??? Or is it impossible to set an out-identifier for fire-all-rules in stateless mode?. Another consideration were to dispose each knowledgesession (on stateful mode) when I send request to drools, but there is no command to do that, only stop/restart server??? Subsidiary question : is it possible to add a System.out.println() in my query??If yes, how to do it? Thank you for your help JC -- View this message in context: http://drools.46999.n3.nabble.com/Drools-server-get-a-query-result-tp3512272p3512272.html Sent from the Drools: User forum 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] Drools server = get a query result
I forget to say that I work with drools 5.2.0.Final -- View this message in context: http://drools.46999.n3.nabble.com/Drools-server-get-a-query-result-tp3512272p3512274.html Sent from the Drools: User forum 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] Corruped undo move
Hello! If I have this problem Corrupted undo move (Remove worker 52 from task 1.992) received from move (Assign worker 52 to task 1.992). Unequal lastCompletedStepScore (-6hard/0soft) and undoScore (-6hard/-11520soft) It's for the error in a move implementation or in a score rule ? -- View this message in context: http://drools.46999.n3.nabble.com/Corruped-undo-move-tp3512364p3512364.html Sent from the Drools: User forum 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] Whether use agenda group or rule flow
We have many unit fields which has dependence on each other. I want to implement a serial of rules to reflect the dependence among them. I am not sure whether I use agenda-group or rule flow. What is the different between them? -- View this message in context: http://drools.46999.n3.nabble.com/Whether-use-agenda-group-or-rule-flow-tp3512486p3512486.html Sent from the Drools: User forum 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] No rules loaded when reading package from Guvnor
Thanks for the quick replies. @Esteban: - Yes the rules do appear when accessing the package source published by Guvnor - Yes the package is built; for my understanding wouldn't trying to load an unbuilt package from its URL generate an error? @Michael: Yes this is the right track... I created an alternate session without Spring by simply loading the package from the URL with a KnowledgeBuilder, it worked (the rules were there). Then I went on and created another session with a KnowledgeAgent loading my XML ChangeSet (still without Spring), and I observed the following: 1. When the session is created, all is fine (package and rules loaded properly in session) 2. When I start the ResourceChangeScanner (ResourceFactory.getResourceChangeScannerService().start()), however, the loaded package disappears from the session. So there are now two things I need to understand: 1. Why does starting the scanner clear the packages loaded in the session? 1. What is the issue when using Spring, as with Spring I still have my package loaded in the session but no rules? Thanks again. Simon -- View this message in context: http://drools.46999.n3.nabble.com/No-rules-loaded-when-reading-package-from-Guvnor-tp3510245p3512702.html Sent from the Drools: User forum 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] No rules loaded when reading package from Guvnor
Update: if I don't start the resource change scanner, the session created with Spring is fine too. So, when starting the scanner, the difference between the Spring case (package loaded but no rules) and the Java code case (no package at all) may be due to code sequence, as in the code I'm using the scanner is started in my service class constructor, after creating the session in Java code but before Spring beans are injected. Depending on your replies I may then try testing with different sequences. sgo wrote: @Michael: Yes this is the right track... I created an alternate session without Spring by simply loading the package from the URL with a KnowledgeBuilder, it worked (the rules were there). Then I went on and created another session with a KnowledgeAgent loading my XML ChangeSet (still without Spring), and I observed the following: 1. When the session is created, all is fine (package and rules loaded properly in session) 2. When I start the ResourceChangeScanner (ResourceFactory.getResourceChangeScannerService().start()), however, the loaded package disappears from the session. So there are now two things I need to understand: 1. Why does starting the scanner clear the packages loaded in the session? 1. What is the issue when using Spring, as with Spring I still have my package loaded in the session but no rules? -- View this message in context: http://drools.46999.n3.nabble.com/No-rules-loaded-when-reading-package-from-Guvnor-tp3510245p3512855.html Sent from the Drools: User forum 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] Building our own UI for Drools
On hosted mode: I have the same requirement i.e hosted site with lots of external clients using the same site, it is indeed impractical to deploy a guvnor instance for each client. Overall, from what I have researched, there are two things available to segregate rules by external client: categories and packages, but I decided against using them to achieve client segregation. The approach I have arrived on is to launch the guvnor standalone editor from my website, store the brl in my tables (the standalone editor provides javascript hooks to allow retrieving the rule brl/drl once the rule has been written). Effectively, the only thing stored in the guvnor repository will be the model to enable rule authoring. Originally, I was planning on storing the rules in the guvnor repository and using the rest api to list rule packages (prefixed by clientId) in my site. Since I am able to retrieve the brl/drl anyways (via standalone editor javascript hook, or if that feature were not available, then vi! a rest call immediately after rule has been authored), I decided to store the brl/drl in my app db. Since the rules are stored in my tables, I will have full control over client segregation. I have done a mini-POC to prove that this will work and it seems like it will, unless an expert on this mailing list can point out showstoppers/potential flaws/shortcomings of this approach. Hope this helps others who are faced with similar situations. Thanks G. Patel - Original Message - From: Jervis Liu [j...@redhat.com] Sent: 11/16/2011 05:14 PM ZE8 To: rules-users@lists.jboss.org Subject: Re: [rules-users] Building our own UI for Drools On 2011/11/16 16:37, kapokfly wrote: Thanks for the information. Deploy multiple GUNVOR instances can't resolve our issue as we have thousands of companies as our customer, each company will share the common part of our applications and meantime they can customize objects/fields they have permission with, this will be terrible if we go with the separate/dedicate deployment and basically we think that will be not manageable... What we are looking for is, be able to share a common collection of ruleset and at the same time, be able to define their custom rules with their customization. At the moment, it is possible to achieve this by using role-based-authorization in Guvnor. I.e., you create some common packages that are designed to be shared by everyone. You assign package-readonly permissions to everyone so that they have read-only access to these common packages. You can also use Global Area to achieve same effect. Essentially Global area is a special package that can be shared by all packages. Then each user has package-admin permission for their own packages. The Workspace as I mentioned early will provide a more completely isolated environment for each user when multiple users are sharing one instance of Guvnor. However we dont have any concrete stories planned for this yet. Cheers, Jervis Ivan - Ivan, your Panda, forever -- View this message in context: http://drools.46999.n3.nabble.com/Building-our-own-UI-for-Drools-tp3508849p3512037.html Sent from the Drools: User forum 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 mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users - The information contained in this communication (including any attachments hereto) is confidential and is intended solely for the personal and confidential use of the individual or entity to whom it is addressed. If the reader of this message is not the intended recipient or an agent responsible for delivering it to the intended recipient, you are hereby notified that you have received this communication in error and that any review, dissemination, copying, or unauthorized use of this information, or the taking of any action in reliance on the contents of this information is strictly prohibited. If you have received this communication in error, please notify us immediately by e-mail, and delete the original message. Thank you ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Building our own UI for Drools
Hi GPatel, Maybe separate by package is something can be tried, but do you see the functionality of what Gunvor provided is good enough for your usage? For us it is still missing some necessary functions: given a condition, 'a = b', 1) we would like the 'b' part could be an expression/reference to another field, not only a value 2) we would like to be able to redefine the dot notation so it can refer to not only a property but also its meta data information so the meta data value can also be used as part of the rule 3) for existing none object graph traverse we also would like to register our own property resolver so it can load related objects into the proper context Also are you able to tweak the UI to comply with your own application's style? And does your object also share a common rulesets across different customers? How you design this part in your POC so any potential upgrade could be easier? Ivan - Ivan, your Panda, forever -- View this message in context: http://drools.46999.n3.nabble.com/Building-our-own-UI-for-Drools-tp3508849p3512962.html Sent from the Drools: User forum 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] Whether use agenda group or rule flow
Essentially, agenda-groups and rule-flow groups do the same job. They filter rules based on their group membership such that rules from active groups will fire. The difference is in the implementation. Ruleflow-groups require a ruleflow to be defined. A group will become active when the token has reached the corresponding rule task. When working with agenda-groups, focus has to be set either explicitly, by calling setFocus(), or automatically, by using the attribute auto-focus. Most of the times, there will probably be no clear preference of one over the other. Imho, it seems that rule-flow groups are a bit more understandable and a little bit easier to debug. Agenda-groups, however, allow for more flexibility because the sequence of the groups can be defined dynamically. As an example where I consider agenda-groups a better choice: Imagine there is a supplement/reduction that has to be applied at different moments during price calculation, depending on certain parameters. Imho, it is easier to set focus to the supplement/reduction group whenever necessary, rather than implementing all different branches in a flow. If the sequence is fixed and well known, ruleflow-groups are probably better. But anyway, feel free to disagree. Regards, Frank Zhao Yi wrote: We have many unit fields which has dependence on each other. I want to implement a serial of rules to reflect the dependence among them. I am not sure whether I use agenda-group or rule flow. What is the different between them? -- View this message in context: http://drools.46999.n3.nabble.com/Whether-use-agenda-group-or-rule-flow-tp3512486p3513063.html Sent from the Drools: User forum 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] [rules-dev] class loading problems with 5.3.0-Final and 5.4.0-SNAPSHOT
Based on more tests and reading some articles about OSGI we (Professor dotty and I) have found that the composite class loader from drools is using Class.forName that is being intercepted by the equinox OSGI container - at org.eclipse.core.runtime.internal.adaptor.ContextFinder.loadClass(ContextFinder.java:124) It looks like both are trying to load the same class definition and the JVM throws the ClassCircularityError. For my very basic example changing the CompositeClassLoader implementation to use: cls = classLoader.loadClass(name); instead of: cls = Class.forName( name, resolve, classLoader ); Fix the problems. But I'm not sure if that will work for all the other cases. Looking the usages of Class.forName inside compiler, core and api I found that it is being used 39 times, which worries me. I'm not planning to change all of them without being sure that is the right way to go. I will continue reading and testing to see if changing the way of loading the classes is the only alternative. Some notes about the difference between loadClass and forName: - Classloader.loadClass() caches the loaded class object and returns always the same class object - This is done by the defining class loader - This ensures that each classloader loads the same class only once - Class.forName() calls the normal classloader hierarchy to load the class (same happens as above) - But caches the class object within the initiating class loader - In standard cases no problem but can be tricky in dynamic environments Source - http://www.martinlippert.org/events/WJAX2008-ClassloadingTypeVisibilityOSGi.pdf On Tue, Nov 15, 2011 at 4:04 PM, Davide Sottara dso...@gmail.com wrote: Lovely exception... Well, both my life and salaboy's depend on solving this issue... Mark and I were also considering to review the Composite ClassLoader at some point in the future, since it causes issues with (re)declared types in DRLs loaded at runtime. Looks like we'll have to catch two birds with one stone :) Salaboy, can you share the simple service and the WSO2 config details? (version, any custom setting, etc...) -- View this message in context: http://drools.46999.n3.nabble.com/rules-users-class-loading-problems-with-5-3-0-Final-and-5-4-0-SNAPSHOT-tp3509949p3510640.html Sent from the Drools: User forum mailing list archive at Nabble.com. ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users -- - CTO @ http://www.plugtree.com - MyJourney @ http://salaboy.wordpress.com - Co-Founder @ http://www.jugargentina.org - Co-Founder @ http://www.jbug.com.ar - Salatino Salaboy Mauricio - ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Building our own UI for Drools
For #1 and #2, I am planning on using DSL that uses a separate model, built specifically for rule writing, that wraps around the actual application domain model. DSL sentences are not quite as user friendly, the rule writer has to pick from a huge list of DSL sentences as opposed to incremental condition phrase building available from the native rule editor, but there is no other way, short of building your own rule editor. The common rulesets, due to their very nature, I am not exposing to the clients for editing, they are internal. The KnowledgeBuilder api can load common rules (which could be in .drl files) in addition to guvnor rules. Thanks Ghanshyam From: kapokfly ivan.jiang...@foxmail.com To: rules-users@lists.jboss.org Date: 11/16/2011 08:16 AM Subject:Re: [rules-users] Building our own UI for Drools Sent by:rules-users-boun...@lists.jboss.org Hi GPatel, Maybe separate by package is something can be tried, but do you see the functionality of what Gunvor provided is good enough for your usage? For us it is still missing some necessary functions: given a condition, 'a = b', 1) we would like the 'b' part could be an expression/reference to another field, not only a value 2) we would like to be able to redefine the dot notation so it can refer to not only a property but also its meta data information so the meta data value can also be used as part of the rule 3) for existing none object graph traverse we also would like to register our own property resolver so it can load related objects into the proper context Also are you able to tweak the UI to comply with your own application's style? And does your object also share a common rulesets across different customers? How you design this part in your POC so any potential upgrade could be easier? Ivan - Ivan, your Panda, forever -- View this message in context: http://drools.46999.n3.nabble.com/Building-our-own-UI-for-Drools-tp3508849p3512962.html Sent from the Drools: User forum mailing list archive at Nabble.com. ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users - The information contained in this communication (including any attachments hereto) is confidential and is intended solely for the personal and confidential use of the individual or entity to whom it is addressed. If the reader of this message is not the intended recipient or an agent responsible for delivering it to the intended recipient, you are hereby notified that you have received this communication in error and that any review, dissemination, copying, or unauthorized use of this information, or the taking of any action in reliance on the contents of this information is strictly prohibited. If you have received this communication in error, please notify us immediately by e-mail, and delete the original message. Thank you ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] No rules loaded when reading package from Guvnor
I think you are fighting with this known bug: https://issues.jboss.org/browse/GUVNOR-1699 ResourceChangeScanner is marking guvnor's resources as removed. I committed a patch some days ago. If you are not interested in keep the kbase in sync with the changes made in Guvnor, a valid workaround could be not to use the kagent and get the pkg directly from Guvnor's URL Best Regards, Esteban Aliverti - Developer @ http://www.plugtree.com - Blog @ http://ilesteban.wordpress.com On Wed, Nov 16, 2011 at 3:43 PM, sgo simon.gou...@elca.ch wrote: Update: if I don't start the resource change scanner, the session created with Spring is fine too. So, when starting the scanner, the difference between the Spring case (package loaded but no rules) and the Java code case (no package at all) may be due to code sequence, as in the code I'm using the scanner is started in my service class constructor, after creating the session in Java code but before Spring beans are injected. Depending on your replies I may then try testing with different sequences. sgo wrote: @Michael: Yes this is the right track... I created an alternate session without Spring by simply loading the package from the URL with a KnowledgeBuilder, it worked (the rules were there). Then I went on and created another session with a KnowledgeAgent loading my XML ChangeSet (still without Spring), and I observed the following: 1. When the session is created, all is fine (package and rules loaded properly in session) 2. When I start the ResourceChangeScanner (ResourceFactory.getResourceChangeScannerService().start()), however, the loaded package disappears from the session. So there are now two things I need to understand: 1. Why does starting the scanner clear the packages loaded in the session? 1. What is the issue when using Spring, as with Spring I still have my package loaded in the session but no rules? -- View this message in context: http://drools.46999.n3.nabble.com/No-rules-loaded-when-reading-package-from-Guvnor-tp3510245p3512855.html Sent from the Drools: User forum 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 mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] No rules loaded when reading package from Guvnor
The patch has not been applied yet. @esteban, did you modify to (a) include the other two changes, (b) a test-case? Cheers, Mike 2011/11/16 Esteban Aliverti esteban.alive...@gmail.com I think you are fighting with this known bug: https://issues.jboss.org/browse/GUVNOR-1699 ResourceChangeScanner is marking guvnor's resources as removed. I committed a patch some days ago. If you are not interested in keep the kbase in sync with the changes made in Guvnor, a valid workaround could be not to use the kagent and get the pkg directly from Guvnor's URL Best Regards, Esteban Aliverti - Developer @ http://www.plugtree.com - Blog @ http://ilesteban.wordpress.com On Wed, Nov 16, 2011 at 3:43 PM, sgo simon.gou...@elca.ch wrote: Update: if I don't start the resource change scanner, the session created with Spring is fine too. So, when starting the scanner, the difference between the Spring case (package loaded but no rules) and the Java code case (no package at all) may be due to code sequence, as in the code I'm using the scanner is started in my service class constructor, after creating the session in Java code but before Spring beans are injected. Depending on your replies I may then try testing with different sequences. sgo wrote: @Michael: Yes this is the right track... I created an alternate session without Spring by simply loading the package from the URL with a KnowledgeBuilder, it worked (the rules were there). Then I went on and created another session with a KnowledgeAgent loading my XML ChangeSet (still without Spring), and I observed the following: 1. When the session is created, all is fine (package and rules loaded properly in session) 2. When I start the ResourceChangeScanner (ResourceFactory.getResourceChangeScannerService().start()), however, the loaded package disappears from the session. So there are now two things I need to understand: 1. Why does starting the scanner clear the packages loaded in the session? 1. What is the issue when using Spring, as with Spring I still have my package loaded in the session but no rules? -- View this message in context: http://drools.46999.n3.nabble.com/No-rules-loaded-when-reading-package-from-Guvnor-tp3510245p3512855.html Sent from the Drools: User forum 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 mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] No rules loaded when reading package from Guvnor
Take that back. I see ge0ffrey merged On 16 November 2011 17:51, Michael Anstis michael.ans...@gmail.com wrote: The patch has not been applied yet. @esteban, did you modify to (a) include the other two changes, (b) a test-case? Cheers, Mike 2011/11/16 Esteban Aliverti esteban.alive...@gmail.com I think you are fighting with this known bug: https://issues.jboss.org/browse/GUVNOR-1699 ResourceChangeScanner is marking guvnor's resources as removed. I committed a patch some days ago. If you are not interested in keep the kbase in sync with the changes made in Guvnor, a valid workaround could be not to use the kagent and get the pkg directly from Guvnor's URL Best Regards, Esteban Aliverti - Developer @ http://www.plugtree.com - Blog @ http://ilesteban.wordpress.com On Wed, Nov 16, 2011 at 3:43 PM, sgo simon.gou...@elca.ch wrote: Update: if I don't start the resource change scanner, the session created with Spring is fine too. So, when starting the scanner, the difference between the Spring case (package loaded but no rules) and the Java code case (no package at all) may be due to code sequence, as in the code I'm using the scanner is started in my service class constructor, after creating the session in Java code but before Spring beans are injected. Depending on your replies I may then try testing with different sequences. sgo wrote: @Michael: Yes this is the right track... I created an alternate session without Spring by simply loading the package from the URL with a KnowledgeBuilder, it worked (the rules were there). Then I went on and created another session with a KnowledgeAgent loading my XML ChangeSet (still without Spring), and I observed the following: 1. When the session is created, all is fine (package and rules loaded properly in session) 2. When I start the ResourceChangeScanner (ResourceFactory.getResourceChangeScannerService().start()), however, the loaded package disappears from the session. So there are now two things I need to understand: 1. Why does starting the scanner clear the packages loaded in the session? 1. What is the issue when using Spring, as with Spring I still have my package loaded in the session but no rules? -- View this message in context: http://drools.46999.n3.nabble.com/No-rules-loaded-when-reading-package-from-Guvnor-tp3510245p3512855.html Sent from the Drools: User forum 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 mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] No rules loaded when reading package from Guvnor
@esteban But the other two Response.ok(...).header(...) should be fixed and submitted as another pull request, please :) And the test - if you have one. :) On 16 November 2011 17:54, Michael Anstis michael.ans...@gmail.com wrote: Take that back. I see ge0ffrey merged On 16 November 2011 17:51, Michael Anstis michael.ans...@gmail.comwrote: The patch has not been applied yet. @esteban, did you modify to (a) include the other two changes, (b) a test-case? Cheers, Mike 2011/11/16 Esteban Aliverti esteban.alive...@gmail.com I think you are fighting with this known bug: https://issues.jboss.org/browse/GUVNOR-1699 ResourceChangeScanner is marking guvnor's resources as removed. I committed a patch some days ago. If you are not interested in keep the kbase in sync with the changes made in Guvnor, a valid workaround could be not to use the kagent and get the pkg directly from Guvnor's URL Best Regards, Esteban Aliverti - Developer @ http://www.plugtree.com - Blog @ http://ilesteban.wordpress.com On Wed, Nov 16, 2011 at 3:43 PM, sgo simon.gou...@elca.ch wrote: Update: if I don't start the resource change scanner, the session created with Spring is fine too. So, when starting the scanner, the difference between the Spring case (package loaded but no rules) and the Java code case (no package at all) may be due to code sequence, as in the code I'm using the scanner is started in my service class constructor, after creating the session in Java code but before Spring beans are injected. Depending on your replies I may then try testing with different sequences. sgo wrote: @Michael: Yes this is the right track... I created an alternate session without Spring by simply loading the package from the URL with a KnowledgeBuilder, it worked (the rules were there). Then I went on and created another session with a KnowledgeAgent loading my XML ChangeSet (still without Spring), and I observed the following: 1. When the session is created, all is fine (package and rules loaded properly in session) 2. When I start the ResourceChangeScanner (ResourceFactory.getResourceChangeScannerService().start()), however, the loaded package disappears from the session. So there are now two things I need to understand: 1. Why does starting the scanner clear the packages loaded in the session? 1. What is the issue when using Spring, as with Spring I still have my package loaded in the session but no rules? -- View this message in context: http://drools.46999.n3.nabble.com/No-rules-loaded-when-reading-package-from-Guvnor-tp3510245p3512855.html Sent from the Drools: User forum 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 mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
[rules-users] Guvnor: Work in progresss - Guided Decision Table editor and Template Data editor
I am refactoring the mergable grid widget, used by the captioned, to an event-based design and have pushed changes to the master branch in github. I pushed the changes as Jervis Liu is completing a major re-organisation of the Guvnor code-base this week and I didn't want to end up with merge conflict hell :) The changes, at this stage, are incomplete. Consequently the captioned editors do not fully work at the moment in the master branch. 5.3.0.Final is unaffected. So, if you get the latest code github's master branch be warned. My changes will complete this week or early next. With kind regards, Mike ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Property access on Java Beans (POJO's)
Hi Mark, Any comment with drools how we can register our own property resolver and able to delegate the actual work back to drools default implementation if necessary? And why you say the MVEL is far better than Spring EL? How about JXEL? Do you also have kind of comparison table available? It is likely that we will not adopt Drools however an expression language would be necessary for us. Ivan - Ivan, your Panda, forever -- View this message in context: http://drools.46999.n3.nabble.com/Property-access-on-Java-Beans-POJO-s-tp3509973p3514445.html Sent from the Drools: User forum 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] Can't open bpmn from Visual Editor in Process Editor
I hope to fill in the properties not yet handled in the Visual Editor with the Process Editor. A workflow created with the Visual Editor that contains Rule Tasks throws an exception when opened in the Process Editor An exception occurred while reading in the RuleFlow XML: No messages found See the error log for more details. Where is the error log and how do I fix the xml in a text editor? Another error when opening with the Process Editor is a Gateway direction is unspecified. I set Gateway directions in the Visual Editor to Diverging and Converging, save the file, but the properties view shows it goes back to Unspecified. Could any one help me?? Thanks in advance, Anjali -- View this message in context: http://drools.46999.n3.nabble.com/Can-t-open-bpmn-from-Visual-Editor-in-Process-Editor-tp3514796p3514796.html Sent from the Drools: User forum 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] drools stateful session, cluster and replication
any one ?? -- View this message in context: http://drools.46999.n3.nabble.com/drools-stateful-session-cluster-and-replication-tp3509139p3514945.html Sent from the Drools: User forum mailing list archive at Nabble.com. ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
