[rules-users] Fuse ESB & Drools 6 problem

[Sergio Besada]

Thank you in advance.


2014-06-04 18:29 GMT+02:00 Charles Moulliard <ch007m at gmail.com>:

> I will have a look to your use case as it is not yet covered and will
> perhaps require that we modify the kie-camel component
>
>
> On Wed, Jun 4, 2014 at 6:02 PM, s b <scerquido at gmail.com> wrote:
>
>> I'm testing the drools new version (6.1.0.Beta4) but I have a problem
>> with the Stateful Drools Session.
>>
>> I have deployed in JBoss Fuse ESB the last versión of the drools (drools
>> camel, jbpm, spring, etc), I have atached my camel context bundle (It's a
>> maven project).
>>
>> This is my camel-context
>>
>> <?xml version="1.0" encoding="UTF-8"?>
>> <beans xmlns="http://www.springframework.org/schema/beans"
>>        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
>>        xmlns:kie="http://drools.org/schema/kie-spring"
>>        xsi:schemaLocation="
>>        http://www.springframework.org/schema/beans
>>        http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
>>        http://drools.org/schema/kie-spring
>> http://drools.org/schema/kie-spring.xsd
>>        http://camel.apache.org/schema/spring
>> http://camel.apache.org/schema/spring/camel-spring.xsd">
>>
>>
>>
>>  <kie:kmodule id="kModule">
>>         <kie:kbase name="rules" packages="rules">
>>             <kie:ksession name="ksession1" type="stateful">
>>             <!--<kie:batch>
>>                <kie:fire-all-rules/>
>>                </kie:batch> -->
>>             <kie:configuration>
>>                 <kie:jpa-persistence>
>>                     <kie:transaction-manager ref="txManager"/>
>>                     <kie:entity-manager-factory ref="myEmf"/>
>>                 </kie:jpa-persistence>
>>             </kie:configuration>
>>
>>
>>             </kie:ksession>
>>         </kie:kbase>
>>     </kie:kmodule>
>>
>>     <kie:environment id="env">
>>        <kie:entity-manager-factory ref="myEmf"/>
>>         <kie:transaction-manager ref="txManager"/>
>>     </kie:environment>
>>
>>
>>   <bean class="org.postgresql.ds.PGPoolingDataSource" id="jbpm-ds">
>>    <property name="serverName" value="localhost"></property>
>>    <property name="databaseName" value="drools"></property>
>>    <property name="portNumber" value="5432"></property>
>>    <property name="user" value="DWP"></property>
>>    <property name="password" value="DWP"></property>
>>   </bean>
>>
>>
>>     <bean id="myEmf"
>> class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
>>         <property name="dataSource" ref="jbpm-ds"/>
>>         <property name="persistenceUnitName"
>> value="org.jbpm.persistence.jpa.local"/>
>>     </bean>
>>
>>     <bean id="txManager"
>> class="org.springframework.orm.jpa.JpaTransactionManager">
>>         <property name="entityManagerFactory" ref="myEmf"/>
>>     </bean>
>>
>>     <bean id="kiePostProcessor"
>> class="org.drools.osgi.spring.OsgiKModuleBeanFactoryPostProcessor"/>
>>
>>     <bean id="fireALlRulesCommand"
>> class="com.execute.command.FireAllRules"/>
>>
>>   <camelContext xmlns="http://camel.apache.org/schema/spring">
>>     <route trace="false" id="testRoute">
>>         <from uri="timer:testRoute?period=10s"/>
>>          <to uri="log:message"/>
>>          <to uri="kie:ksession1?action=insertBody" id="AgeVerification"/>
>>
>>          <bean method="fireAllRules" ref="fireALlRulesCommand"/>
>>          <to uri="kie:ksession1?action=execute"/>
>>
>>     </route>
>>   </camelContext>
>>
>> </beans>
>>
>> As you can see it is an scenario where Drools is in an stateful session
>> with persistence configured.
>>
>> The bundle is executed without errors but I want that Drools executes my
>> rules each time that the route is executed ( fireUntilHalt mode but I
>> wasn't able as seems that this command is not availble in a persisted
>> environment ), for this reason I've created a bean with the command:
>> fireAllRules and I use <to uri="kie:ksession1?action=execute"/> to execute
>> the rules but the problem is that the rules are only executed the first
>> time, only the first time and never in subsequents executions of the route.
>>
>>  The persistece seems to  work well ( I can see the datamodel created and
>> populated as expeted in the DB ).
>>
>> However if I change to use stateless mode  ( no persistence then ), the
>> rules are executed each time that route is executed ( as expected ), and
>> therefore I don´t need the command fireAllRules
>> <bean method="fireAllRules" ref="fireALlRulesCommand"/>
>>  <to uri="kie:ksession1?action=execute"/>
>>
>>
>>
>> Questions:
>>
>> Is it possible to have a stateful fireUntilHalt drools session that keeps
>> using the same knowledge session in subsequent camel route executions?
>>
>> If it is not possible, Can I have a stateful ( persisted )drools session
>> and invoke "fireAllRules" whenever I make changes in the knowledge session
>> ( new Facts are inserted )?
>>
>> I've deep dived into the web looking for examples or documentation of
>> this scenario both in Spring and Blueprint. Does anyone of you have any
>> pointers to documentation on the matter?
>>
>> Kind Regards,
>>
>> _______________________________________________
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>> rules-users at lists.jboss.org
>> https://lists.jboss.org/mailman/listinfo/rules-users
>>
>
>
>
> --
> Charles Moulliard
> Apache Committer / Architect @RedHat
> Twitter : @cmoulliard | Blog :  http://cmoulliard.github.io
>
>
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