[rules-users] Test Scenario
Hello, Please share some documentation to create test scenarios in drools guvnor. How to initialize the java objects, on which the test scenarios have to be executed? Do drools allow rule testing where the input is nested objects? Thanks, Boban -- View this message in context: http://drools.46999.n3.nabble.com/Test-Scenario-tp2841833p2841833.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] Encrypt password in repository.xml
Boban, Instead of using an explicit JDBC connection string, you can instead find your MySQL connection via a JNDI lookup, externalizing your database connection information to your application server. You'll have to Google the exact details, but I believe you set the driver class to javax.naming.InitialContext and then the driver url to the JNDI name of your datasource. Kind regards, David On 4/20/11 6:39 AM, Boban Abraham boban_abra...@mindtree.com wrote: We use mysql to store the data, hence mysql db credentials are mentioned in repository.xml The DB user password in repository.xml is not encrypted currently. What are the options available to place encrypted password in repository.xml? -- View this message in context: http://drools.46999.n3.nabble.com/Encrypt-password-in-repository-xml-tp284 1654p2841654.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] First Order Logic - METHODS in Drools
I thought wrapping a method in a eval statement is effectively allowing you to use methods directly, it is syntactic sugar to say this is a method call, evaluate it and then use the result in the rete graph. From what I understand the problem with methods is drools has to assume that the method always returns the same result given the same set of inputs and has no side effects as it is non-deterministic how many (or few) times the method is called and if the return value changes on different calls then it can really screw things up. When writing beans getters normally follow this rule by convention and necessity, however this is much less likely for arbitrary methods hence why it is good (IMHO) to force the user to consider what they are doing explicitly. Thomas -Original Message- From: rules-users-boun...@lists.jboss.org [mailto:rules-users- boun...@lists.jboss.org] On Behalf Of Arjun Dhar Sent: 20 April 2011 05:29 To: rules-users@lists.jboss.org Subject: [rules-users] First Order Logic - METHODS in Drools According to First order Logic, (from a rule perspective), one can represent their statements using: PREDICATES, METHODS, CONNECTORS (including existential quantifiers) ..while PREDICATES can be synonymous with Object and Object expressions; the only way of using methods has been via eval (AFAIK, as per my outdated knowledge); and this is discouraged for the fact that evals perhaps dont fit in the RETE-OO scheme of things. Please note: By methods I dont bean Bean getter/setters; but work horse service layer methods. ..however, to be true to FOL, using methods directly should be supported. Q1) If it is, can one show or state an example? Q2) If not, for METHODS that return a specific type of Object, cant they be useful in RETE-OO evaluation? Q3) I've used from for DAO's , conceptually does from address this fully? In FOL (imo) PREDICATES METHODS can be exchanged freely, not sure if from gives that freedom. thanks -- View this message in context: http://drools.46999.n3.nabble.com/First- Order-Logic-METHODS-in-Drools-tp2841531p2841531.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 ** This message is confidential and intended only for the addressee. If you have received this message in error, please immediately notify the postmas...@nds.com and delete it from your system as well as any copies. The content of e-mails as well as traffic data may be monitored by NDS for employment and security purposes. To protect the environment please do not print this e-mail unless necessary. NDS Limited. Registered Office: One London Road, Staines, Middlesex, TW18 4EX, United Kingdom. A company registered in England and Wales. Registered no. 3080780. VAT no. GB 603 8808 40-00 ** ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] First Order Logic - METHODS in Drools
I believe eval() solves that purpose functionally but is not optimal; not sure how evals() tie in with Rete-OO Specially since the return type of eval() is not known, I can seriously doubt it being optimal as using Objects directly in conditions. - Software documentation is like sex: If its good its really really good, if not then its still better than nothing! -- View this message in context: http://drools.46999.n3.nabble.com/First-Order-Logic-METHODS-in-Drools-tp2841531p2842085.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] First Order Logic - METHODS in Drools
It would help if you read the documentation which explains that eval() must return a boolean. Predicate is a mathematical concept; how it is implemented in some system is a technical issue. That said, predicates can be expressed in Drools one way or other, and some predicates may be more efficient than other, depending on the computational details. Again, the documentation contains many examples showing predicate implementations, and usage of from is documented as well. -W On 20 April 2011 10:48, Arjun Dhar dhar...@yahoo.com wrote: I believe eval() solves that purpose functionally but is not optimal; not sure how evals() tie in with Rete-OO Specially since the return type of eval() is not known, I can seriously doubt it being optimal as using Objects directly in conditions. - Software documentation is like sex: If its good its really really good, if not then its still better than nothing! -- View this message in context: http://drools.46999.n3.nabble.com/First-Order-Logic-METHODS-in-Drools-tp2841531p2842085.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] First Order Logic - METHODS in Drools
ok thanks, i think i confused my notion of eval() with also its ability to return int on calculations in some other framework. The reason why i started this thread was to ensure in the process of Rule engineering, I could write optimal rules in mathematical notion and not have to worry about technical differences in how a Predicate is translated while translation to drools. (ideally) thanks everyone. - Software documentation is like sex: If its good its really really good, if not then its still better than nothing! -- View this message in context: http://drools.46999.n3.nabble.com/First-Order-Logic-METHODS-in-Drools-tp2841531p2842153.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] First Order Logic - METHODS in Drools
On 20 April 2011 11:17, Arjun Dhar dhar...@yahoo.com wrote: The reason why i started this thread was to ensure in the process of Rule engineering, I could write optimal rules in mathematical notion and not have to worry about technical differences in how a Predicate is translated while translation to drools. (ideally) :) This idea is not new. You may want to look up Konrad Zuse'shttp://en.wikipedia.org/wiki/Konrad_Zuseidea of Plankalkül http://en.wikipedia.org/wiki/Plankalk%C3%BCl. Mathematics is abstract, computers aren't. -W thanks everyone. - Software documentation is like sex: If its good its really really good, if not then its still better than nothing! -- View this message in context: http://drools.46999.n3.nabble.com/First-Order-Logic-METHODS-in-Drools-tp2841531p2842153.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] compilation error - Import statements are colliding
Hi, We have scenario in which the imported java classes have same name but different package. The drools guvnor is throwing compilation error stating that import statements are colliding, even though the java class packages are different. Please let me know if there are any solutions for this issue. Thanks, Boban -- View this message in context: http://drools.46999.n3.nabble.com/compilation-error-Import-statements-are-colliding-tp2842283p2842283.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] compilation error - Import statements are colliding
I believe that you can only import one class with the same name, regardless of package. To access the other class within your code, you will need to refer to it every time with the fully qualified class name. This conforms to the behavior of Java source files. On 4/20/11 11:38 AM, Boban Abraham boban_abra...@mindtree.com wrote: Hi, We have scenario in which the imported java classes have same name but different package. The drools guvnor is throwing compilation error stating that import statements are colliding, even though the java class packages are different. Please let me know if there are any solutions for this issue. Thanks, Boban -- View this message in context: http://drools.46999.n3.nabble.com/compilation-error-Import-statements-are- colliding-tp2842283p2842283.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] [guvnor] How to use a rule in a java application
Hi all, I am new in Guvnor and have a lot of questions. I have created a decision table with the Guvnor web app. I have also created some test. All seems to be fine. Now I want to use the rules in a web application. Unfortunately Guvnor doesn't provide a web service interface so I must develop an own web service to deal with the rules. But thats not so easy ... In the Guvnor documentation I can see how to create KnowledgeBases and builders and how to fire rules. But I cannot see how to receive rule results. Example: The decision table looks similar like this: rule 1 under age if person.age 18 then under age rule 2 pensioner female if person.age 64 and person.gender == female then pensioner rule 3 pensioner male if person.age 67 and person.gender == male then pensioner rule 4 full age * then full age In my java application I create a person object: Person p = new Person(); p.setBirthday(...); p.setGender(...); Now I miss a method in the Guvnor api to exectute the rules and receive the result like this: Person result = (Person) rules.execute(p); Can somebody explain how to execute a rule and receive the result. Thanks in Advance Mario Viertel Germany ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] [guvnor] How to use a rule in a java application
Hi, Guvnor is an authoring and repository environment not a runtime environment. Please read about KnowledgeBuilder and its related addResource methods together with the ResourceType.PKG. You can also look at using KnowledgeAgent but for now an understanding of KnowledgeBuilder will suffice. I also recommend you read about rule invocation, as your example of how you expect operation rules.execute suggests you have not read the Expert documentation. With kind regards, Mike On 20 April 2011 12:39, Mario Viertel mario.vier...@medav.de wrote: Hi all, I am new in Guvnor and have a lot of questions. I have created a decision table with the Guvnor web app. I have also created some test. All seems to be fine. Now I want to use the rules in a web application. Unfortunately Guvnor doesn't provide a web service interface so I must develop an own web service to deal with the rules. But thats not so easy ... In the Guvnor documentation I can see how to create KnowledgeBases and builders and how to fire rules. But I cannot see how to receive rule results. Example: The decision table looks similar like this: rule 1 under age if person.age 18 then under age rule 2 pensioner female if person.age 64 and person.gender == female then pensioner rule 3 pensioner male if person.age 67 and person.gender == male then pensioner rule 4 full age * then full age In my java application I create a person object: Person p = new Person(); p.setBirthday(...); p.setGender(...); Now I miss a method in the Guvnor api to exectute the rules and receive the result like this: Person result = (Person) rules.execute(p); Can somebody explain how to execute a rule and receive the result. Thanks in Advance Mario Viertel Germany ___ 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] Dynamic updates of stateful sessions
...I forgot the mention that I've made sure that all files are on the classpath. If I go directly for the drl file without using KnowledgeAgent and ChangeSet.xml it works. -- View this message in context: http://drools.46999.n3.nabble.com/Dynamic-updates-of-stateful-sessions-tp2834623p2842915.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] drools flow persistence doesn't work with spring jta - bug/TODO code in SingleSessionCommandService#initTransactionManager
hi,
i've been trying to setup my drools flow persistence layer to use spring
transaction management (JTA) but it looks like some parts of the code are
missing in 5.1.1 rendering the whole idea impossible.
Whats happening is that when my transaction manager calls commit it gets
NullPointerException because jpm variable in SingleSessionCommandService has
never been set. It looks like it should be set in initTransactionManager
method in line 233 but all that this line is a comment that reads:
...else{
// configure spring for JPA and distributed transactions
}
So is there any way to have spring managing JTA transactions?
Sorry but it's been over a week for me trying to have drools persistence
working and after all the problems so far i'm considering jbpm5 as something
in a more production ready state
i've found similar thread here
http://drools.46999.n3.nabble.com/Drools-Spring-JPA-JTA-td2024942.html but
till now nobody replied to it with any explanation
below my spring config
bean id=droolsFlowEntityManagerFactory
class=org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean
p:dataSource-ref=droolsFlowDataSource
p:persistenceUnitName=org.drools.persistence.jpa
p:persistenceXmlLocation=classpath:/config/droolsflow/jpa/persistence.xml
property name=jpaVendorAdapter
bean
class=org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter
p:showSql=true p:generateDdl=false /
/property
/bean
bean id=bitronixTransactionManagerConfig
factory-method=getConfiguration
class=bitronix.tm.TransactionManagerServices
property name=serverId value=spring-btm /
property name=warnAboutZeroResourceTransaction
value=true/property
/bean
bean id=bitronixTransactionManager factory-method=getTransactionManager
class=bitronix.tm.TransactionManagerServices
depends-on=bitronixTransactionManagerConfig destroy-method=shutdown /
bean id=droolsFlowTransactionManager
class=org.springframework.transaction.jta.JtaTransactionManager
property name=transactionManager ref=bitronixTransactionManager /
property name=userTransaction ref=bitronixTransactionManager /
/bean
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Re: [rules-users] Dynamic updates of stateful sessions
@Wolfgang: if you are using drools.agent.newInstance=true (the default configuration), then whenever a change-set is applied, either because you explicitly force the agent to do so, or because a monitored resource changes, the kbase inside the agent is thrown away an a new kbase is created. So you need to get the kbase from the agent and retrieve a fresh session from it. You can confirm this behavior in this set of tests: https://github.com/droolsjbpm/drools/blob/master/drools-compiler/src/test/java/org/drools/agent/KnowledgeAgentIncrementalChangeSetTest.java But, if you are using drools.agent.newInstance=false the internal kbase (and each stateful session you got from it) is refreshed when a change-set is applied. @maav: could you please post the output log? When you say it doesn't work are you saying that it fails when the agent tries to apply the change-set for the first time? Or it fails if you modify the package when the agent is running? Best Regards, Esteban Aliverti - Developer @ http://www.plugtree.com - Blog @ http://ilesteban.wordpress.com On Wed, Apr 20, 2011 at 11:08 AM, maav mattias.ave...@netlight.se wrote: ...I forgot the mention that I've made sure that all files are on the classpath. If I go directly for the drl file without using KnowledgeAgent and ChangeSet.xml it works. -- View this message in context: http://drools.46999.n3.nabble.com/Dynamic-updates-of-stateful-sessions-tp2834623p2842915.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] drools flow persistence doesn't work with spring jta - bug/TODO code in SingleSessionCommandService#initTransactionManager
As far as I remember, there was a problem with spring and JTA XA
implementation.
Can you provide us a simple test case that fails? we can create a jira issue
and work on it easily if we have that.
Greetings.
On Wed, Apr 20, 2011 at 11:57 AM, gs76pl gstas...@pacemetrics.com wrote:
hi,
i've been trying to setup my drools flow persistence layer to use spring
transaction management (JTA) but it looks like some parts of the code are
missing in 5.1.1 rendering the whole idea impossible.
Whats happening is that when my transaction manager calls commit it gets
NullPointerException because jpm variable in SingleSessionCommandService
has
never been set. It looks like it should be set in initTransactionManager
method in line 233 but all that this line is a comment that reads:
...else{
// configure spring for JPA and distributed transactions
}
So is there any way to have spring managing JTA transactions?
Sorry but it's been over a week for me trying to have drools persistence
working and after all the problems so far i'm considering jbpm5 as
something
in a more production ready state
i've found similar thread here
http://drools.46999.n3.nabble.com/Drools-Spring-JPA-JTA-td2024942.html but
till now nobody replied to it with any explanation
below my spring config
bean id=droolsFlowEntityManagerFactory
class=org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean
p:dataSource-ref=droolsFlowDataSource
p:persistenceUnitName=org.drools.persistence.jpa
p:persistenceXmlLocation=classpath:/config/droolsflow/jpa/persistence.xml
property name=jpaVendorAdapter
bean
class=org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter
p:showSql=true p:generateDdl=false /
/property
/bean
bean id=bitronixTransactionManagerConfig
factory-method=getConfiguration
class=bitronix.tm.TransactionManagerServices
property name=serverId value=spring-btm /
property name=warnAboutZeroResourceTransaction
value=true/property
/bean
bean id=bitronixTransactionManager
factory-method=getTransactionManager
class=bitronix.tm.TransactionManagerServices
depends-on=bitronixTransactionManagerConfig destroy-method=shutdown /
bean id=droolsFlowTransactionManager
class=org.springframework.transaction.jta.JtaTransactionManager
property name=transactionManager ref=bitronixTransactionManager
/
property name=userTransaction ref=bitronixTransactionManager /
/bean
--
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Re: [rules-users] [guvnor] How to use a rule in a java application
Hi Mike, thanks for the information. No, I didn't know the Expert documentation. Regards, Mario Am 20.04.2011 14:09, schrieb Michael Anstis: Hi, Guvnor is an authoring and repository environment not a runtime environment. Please read about KnowledgeBuilder and its related addResource methods together with the ResourceType.PKG. You can also look at using KnowledgeAgent but for now an understanding of KnowledgeBuilder will suffice. I also recommend you read about rule invocation, as your example of how you expect operation rules.execute suggests you have not read the Expert documentation. With kind regards, Mike On 20 April 2011 12:39, Mario Viertelmario.vier...@medav.de wrote: Hi all, I am new in Guvnor and have a lot of questions. I have created a decision table with the Guvnor web app. I have also created some test. All seems to be fine. Now I want to use the rules in a web application. Unfortunately Guvnor doesn't provide a web service interface so I must develop an own web service to deal with the rules. But thats not so easy ... In the Guvnor documentation I can see how to create KnowledgeBases and builders and how to fire rules. But I cannot see how to receive rule results. Example: The decision table looks similar like this: rule 1 under age if person.age 18 then under age rule 2 pensioner female if person.age 64 and person.gender == female then pensioner rule 3 pensioner male if person.age 67 and person.gender == male then pensioner rule 4 full age * then full age In my java application I create a person object: Person p = new Person(); p.setBirthday(...); p.setGender(...); Now I miss a method in the Guvnor api to exectute the rules and receive the result like this: Person result = (Person) rules.execute(p); Can somebody explain how to execute a rule and receive the result. Thanks in Advance Mario Viertel Germany ___ 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 -- Mit freundlichen Gruessen Mario Viertel RMS - Radio Monitoring and Surveillance Solutions BIS - Business and Intelligence Solutions Tel: +49 9131 583 510 Fax: +49 9131 583 11 Mail: mario.vier...@medav.de Skype: mavi-medav Betriebsstaette Ilmenau Homburger Platz 3 98693 Ilmenau _ MEDAV GmbH Graefenberger Str. 32-34 D-91080 Uttenreuth Geschaeftsfuehrer Dr.-Ing. Hans-Joachim Kolb Handelsregister Fuerth HRB 2311 Bankverbindung Stadt- und Kreissparkasse Erlangen BLZ 763 500 00, KtNr. 10 - 000 344 Internet http://www.medav.de Angaben gemaess EHUG vom 10.11.2006 ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Dynamic updates of stateful sessions
2011/4/20 Esteban Aliverti esteban.alive...@gmail.com @Wolfgang: if you are using drools.agent.newInstance=true (the default configuration), then whenever a change-set is applied, either because you explicitly force the agent to do so, or because a monitored resource changes, the kbase inside the agent is thrown away an a new kbase is created. So you need to get the kbase from the agent and retrieve a fresh session from it. You can confirm this behavior in this set of tests: https://github.com/droolsjbpm/drools/blob/master/drools-compiler/src/test/java/org/drools/agent/KnowledgeAgentIncrementalChangeSetTest.java But, if you are using drools.agent.newInstance=false the internal kbase (and each stateful session you got from it) is refreshed when a change-set is applied. Would you please point me to the doc where it says and each stateful session ... is refreshed? If true, this were an extremely risky operation. Consider a stateful session whizzing along and - smack! - rules change right in the middle of a sequence of firings. Shudder. -W ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Dynamic updates of stateful sessions
@Wolfgang, maybe I need to update the documentation to explicitly inform about this behavior :). The agent doesn't make anything special to sync the sessions with the kbase. If you add a rule by hand to an existing kbase, all the session from this kbase will automatically detect the changes. Now I'm working in a helper class to create and apply change-set in a programatic way. So if you don't want kbases to be automatically modified when a resource chages, you can use this helper class. Best Regards, Esteban Aliverti - Developer @ http://www.plugtree.com - Blog @ http://ilesteban.wordpress.com 2011/4/20 Wolfgang Laun wolfgang.l...@gmail.com 2011/4/20 Esteban Aliverti esteban.alive...@gmail.com @Wolfgang: if you are using drools.agent.newInstance=true (the default configuration), then whenever a change-set is applied, either because you explicitly force the agent to do so, or because a monitored resource changes, the kbase inside the agent is thrown away an a new kbase is created. So you need to get the kbase from the agent and retrieve a fresh session from it. You can confirm this behavior in this set of tests: https://github.com/droolsjbpm/drools/blob/master/drools-compiler/src/test/java/org/drools/agent/KnowledgeAgentIncrementalChangeSetTest.java But, if you are using drools.agent.newInstance=false the internal kbase (and each stateful session you got from it) is refreshed when a change-set is applied. Would you please point me to the doc where it says and each stateful session ... is refreshed? If true, this were an extremely risky operation. Consider a stateful session whizzing along and - smack! - rules change right in the middle of a sequence of firings. Shudder. -W ___ 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] Strange intermittent problem with Drools Flow
Bump Regards, Dan Nathanson On Mon, Apr 11, 2011 at 4:37 PM, Dan Nathanson d...@ddnconsulting.com wrote: Hi Mauricio, This is now happening intermittently for another user and a couple of times on our build machine. I have never seen it happen on my machine. This will be a show-stopper for us if we cannot figure out the cause. Our business processes will stall after one user completes their task and the next user is never notified that they have a task, and no errors will be reported. Regards, Dan Nathanson On Mon, Apr 4, 2011 at 9:27 PM, Dan Nathanson d...@ddnconsulting.com wrote: Hi Mauricio, Were you able to make determine anything from the info I sent you? Regards, Dan Nathanson On Fri, Apr 1, 2011 at 11:03 AM, Dan Nathanson d...@ddnconsulting.com wrote: Hi Mauricio, Thanks for looking into this. These are the types of errors that scare me. They only happen in one environment and I cannot reproduce them. How will I know if it happens in production? We generate our rule flow's dynamically from our own concept of a process flow. I don't have a custom work item implementation, but I do have a custom WorkItemHandler registered against work items of type Step called StepWorkItemHandler. StepWorkItemHandler has uses and injected CallbackHandler to do actual processing. In test code, the injected callback handler just records what steps (work items) have been activated. In production code, the injected handler sends JMS messages to notify assigned users that work needs to be completed. Below is an example of a simple generated flow that fails intermittently for one developer here. I captured it using the XmlRuleFlowProcessDumper. ?xml version=1.0 encoding=UTF-8? process xmlns=http://drools.org/drools-5.0/process; xmlns:xs=http://www.w3.org/2001/XMLSchema-instance; xs:schemaLocation=http://drools.org/drools-5.0/process drools-processes-5.0.xsd type=RuleFlow name=flow-1 id=bd5556f7_581d_422f_a382_3bb3ac041c4f package-name=com.xxx.process.manager header imports import name=org.drools.ruleflow.instance.RuleFlowProcessInstance / /imports /header nodes start id=1 name=flow-1 Start / join id=2 name=step-1 Reject Join type=2 / workItem id=3 name=step-1 Step work name=Step /work /workItem workItem id=4 name=step-1 Approval work name=Step /work /workItem split id=5 name=step-1 Approval Split type=2 constraints constraint toNodeId=2 toType=DROOLS_DEFAULT name=rejected priority=110 type=code dialect=java return true;/constraint constraint toNodeId=6 toType=DROOLS_DEFAULT name=approved priority=100 type=rule dialect=mvel StepApproval( approved == true, sliceValue == NO_SLICE, approvalStepNodeId == 1a8a5a64-1e32-46a9-8b04-806c1706a97a )/constraint /constraints /split state id=6 name=null Wait onEntry action type=expression dialect=java Terminator.terminateFlow(context);/action /onEntry constraints constraint toNodeId=7 Terminator()/constraint /constraints /state end id=7 name=null End / /nodes connections connection from=1 to=2 / connection from=5 to=2 / connection from=2 to=3 / connection from=3 to=4 / connection from=4 to=5 / connection from=5 to=6 / connection from=6 to=7 / /connections /process I'm attaching the log at trace level (there are no WARN level messages at all) that shows this flow failing to complete. Lines of interest: 631: Generating the flow from our internal model 634: starting the flow 785: Process event listener shows that flow has started and proceeded to work item 1 (step-1 Step) 802: StepWorkItemHandler called for work item 1 step-1 Step 803: Process event listener shows unwindingof activations 904: Work item 1 step-1 Step completed 921: work item loaded 939: process instance loaded 956: Process event listener shows leaving step-1 Step, activating work item 2 step-1 Approval 969: StepWorkItemHandler called forwork item 2 step-1 Approval 970: Process event listener shows unwindingof activations 1024: work item 1 deleted 1032: Work item 2 step-1 Approval completed 1049: work item loaded 1067: process instance loaded ---Should now see leaving step-1 Approval and completing flow, but don't see any further progress in the flow.--- 1141: work item 2 deleted The execution thread is part of the log output and it seems that everything is done in one thread. I've also attached a log file (without verbose hibernate output) for a successful test run. Regards, Dan Nathanson On Fri, Apr 1, 2011 at 2:42 AM, Mauricio Salatino sala...@gmail.com wrote: Hi Dan, That's strange, it could be related to a non updated version of the fluent API. Send us the logs with warn verbosity and we will definitely take a look on it. If the workflow don't continue after a work item completion
Re: [rules-users] Strange intermittent problem with Drools Flow
Hi Dan, did you manage to get it working? I didn't have time to look at your problem yet. I'm having very complicated times, but I'm looking forward to have at least one day to fix that issue. Can you update me your situation right now? On Wed, Apr 20, 2011 at 1:26 PM, Dan Nathanson d...@ddnconsulting.comwrote: Bump Regards, Dan Nathanson On Mon, Apr 11, 2011 at 4:37 PM, Dan Nathanson d...@ddnconsulting.com wrote: Hi Mauricio, This is now happening intermittently for another user and a couple of times on our build machine. I have never seen it happen on my machine. This will be a show-stopper for us if we cannot figure out the cause. Our business processes will stall after one user completes their task and the next user is never notified that they have a task, and no errors will be reported. Regards, Dan Nathanson On Mon, Apr 4, 2011 at 9:27 PM, Dan Nathanson d...@ddnconsulting.com wrote: Hi Mauricio, Were you able to make determine anything from the info I sent you? Regards, Dan Nathanson On Fri, Apr 1, 2011 at 11:03 AM, Dan Nathanson d...@ddnconsulting.com wrote: Hi Mauricio, Thanks for looking into this. These are the types of errors that scare me. They only happen in one environment and I cannot reproduce them. How will I know if it happens in production? We generate our rule flow's dynamically from our own concept of a process flow. I don't have a custom work item implementation, but I do have a custom WorkItemHandler registered against work items of type Step called StepWorkItemHandler. StepWorkItemHandler has uses and injected CallbackHandler to do actual processing. In test code, the injected callback handler just records what steps (work items) have been activated. In production code, the injected handler sends JMS messages to notify assigned users that work needs to be completed. Below is an example of a simple generated flow that fails intermittently for one developer here. I captured it using the XmlRuleFlowProcessDumper. ?xml version=1.0 encoding=UTF-8? process xmlns=http://drools.org/drools-5.0/process; xmlns:xs=http://www.w3.org/2001/XMLSchema-instance; xs:schemaLocation=http://drools.org/drools-5.0/process drools-processes-5.0.xsd type=RuleFlow name=flow-1 id=bd5556f7_581d_422f_a382_3bb3ac041c4f package-name=com.xxx.process.manager header imports import name=org.drools.ruleflow.instance.RuleFlowProcessInstance / /imports /header nodes start id=1 name=flow-1 Start / join id=2 name=step-1 Reject Join type=2 / workItem id=3 name=step-1 Step work name=Step /work /workItem workItem id=4 name=step-1 Approval work name=Step /work /workItem split id=5 name=step-1 Approval Split type=2 constraints constraint toNodeId=2 toType=DROOLS_DEFAULT name=rejected priority=110 type=code dialect=java return true;/constraint constraint toNodeId=6 toType=DROOLS_DEFAULT name=approved priority=100 type=rule dialect=mvel StepApproval( approved == true, sliceValue == NO_SLICE, approvalStepNodeId == 1a8a5a64-1e32-46a9-8b04-806c1706a97a )/constraint /constraints /split state id=6 name=null Wait onEntry action type=expression dialect=java Terminator.terminateFlow(context);/action /onEntry constraints constraint toNodeId=7 Terminator()/constraint /constraints /state end id=7 name=null End / /nodes connections connection from=1 to=2 / connection from=5 to=2 / connection from=2 to=3 / connection from=3 to=4 / connection from=4 to=5 / connection from=5 to=6 / connection from=6 to=7 / /connections /process I'm attaching the log at trace level (there are no WARN level messages at all) that shows this flow failing to complete. Lines of interest: 631: Generating the flow from our internal model 634: starting the flow 785: Process event listener shows that flow has started and proceeded to work item 1 (step-1 Step) 802: StepWorkItemHandler called for work item 1 step-1 Step 803: Process event listener shows unwindingof activations 904: Work item 1 step-1 Step completed 921: work item loaded 939: process instance loaded 956: Process event listener shows leaving step-1 Step, activating work item 2 step-1 Approval 969: StepWorkItemHandler called forwork item 2 step-1 Approval 970: Process event listener shows unwindingof activations 1024: work item 1 deleted 1032: Work item 2 step-1 Approval completed 1049: work item loaded 1067: process instance loaded ---Should now see leaving step-1 Approval and completing flow, but don't see any further progress in the flow.--- 1141: work item 2 deleted The execution thread is part of the log output and it seems that everything is
Re: [rules-users] drools flow persistence doesn't work with spring jta - bug/TODO code in SingleSessionCommandService#initTransactionManager
hi, i've created a simple project that fails/succeeds base on the passed transaction manager. See my comments in the test. http://drools.46999.n3.nabble.com/file/n2843407/droolsflow-bugs.zip droolsflow-bugs.zip i'd appreciate if anyone had a look on this issue -- View this message in context: http://drools.46999.n3.nabble.com/drools-flow-persistence-doesn-t-work-with-spring-jta-bug-TODO-code-in-SingleSessionCommandService-inr-tp2843098p2843407.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
