[jboss-jira] [JBoss JIRA] Commented: (JBRULES-2604) New simple JPAKnowledgeServiceBean that can be used to create / reload Stateful Knowledge Sessions

[Mark Proctor (JIRA)]

    [ https://issues.jboss.org/browse/JBRULES-2604?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12602810#comment-12602810 ] 

Mark Proctor commented on JBRULES-2604:
---------------------------------------

Can you check against our most recent spring stuff, do we have something that does this for you now? If so please close this jira, or come back with additional requests against what we have now.

> New simple JPAKnowledgeServiceBean that can be used to create / reload Stateful Knowledge Sessions
> --------------------------------------------------------------------------------------------------
>
>                 Key: JBRULES-2604
>                 URL: https://issues.jboss.org/browse/JBRULES-2604
>             Project: Drools
>          Issue Type: Patch
>      Security Level: Public(Everyone can see) 
>          Components: All
>    Affects Versions: 5.1.0.FINAL
>         Environment: N/A
>            Reporter: Anatoly Polinsky
>            Assignee: Mark Proctor
>              Labels: drools_spring, spring
>         Attachments: JPAKnowledgeServiceBean.java
>
>   Original Estimate: 1 hour
>  Remaining Estimate: 1 hour
>
> Spring bean that serves as a facade into Drools Session creation and reloading using persistent (JPA) knowledge state.
> Public client APIs are newStatefulKnowledgeSession( ) and loadStatefulKnowledgeSession( sessionID ) which do just that:
> newStatefulKnowledgeSession():            Creates a new StatefulKnowledgeSession
> loadStatefulKnowledgeSession( sessionID ):        Reloads an existing ( previously persisted StatefulKnowledgeSession ) by the sesssionID 
> Here is an example on how this bean can be configured: 
>  	<bean id="abstractKnowledgeProvider"
>                class="org.drools.container.spring.beans.persistence.JPAKnowledgeServiceBean">
>                <property name="entityManagerFactory" ref="entityManagerFactory" />
>                <property name="transactionManager" ref="txManager" />
>                <property name="knowledgeStore" ref="kstore"/>
>   
>                <property name="kbase">
>                    <drools:kbase id="kbase" node="node">
>                        <drools:resources>
>                            <drools:resource type="DRF"
>                                             source="classpath:./META-INF/flow/subprocess-flow.rf" />					             
>                            <drools:resource type="DRF"
>                                             source="classpath:./META-INF/flow/parallel-subprocess-flow.rf" />
>                            <drools:resource type="DRF"
>                                             source="classpath:./META-INF/flow/approval-flow.rf" />
>                        </drools:resources>
>                    </drools:kbase>
>                </property>
>                <property name="variablePersisters">
>                    <util:map>
>                        <entry key="javax.persistence.Entity"
>                               value="org.drools.persistence.processinstance.persisters.JPAVariablePersister" />
>                        <entry key="java.io.Serializable"
>                               value="org.drools.persistence.processinstance.persisters.SerializableVariablePersister" />
>                        <entry key="java.lang.String"
>                               value="org.drools.persistence.processinstance.persisters.StringVariablePersister" />
>                    </util:map>
>                </property>
> 	</bean>
> Besides "variablePersisters" all properties are mandatory ( cannot be NULL / not set ). 

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