[jboss-jira] [JBoss JIRA] Commented: (JBRULES-2930) KnowledgeAgentDefinitionParser can get NPEs

[stevearoonie (JIRA)]

    [ https://issues.jboss.org/browse/JBRULES-2930?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12613823#comment-12613823 ] 

stevearoonie commented on JBRULES-2930:
---------------------------------------

Until this is fixed the workaround is to redundantly specify the bean class in the child bean definitions. Note this is all bean definitions, not just Drools related ones.

> KnowledgeAgentDefinitionParser can get NPEs
> -------------------------------------------
>
>                 Key: JBRULES-2930
>                 URL: https://issues.jboss.org/browse/JBRULES-2930
>             Project: Drools
>          Issue Type: Bug
>      Security Level: Public(Everyone can see) 
>          Components: drools-spring
>    Affects Versions: 5.1.1.FINAL
>            Reporter: stevearoonie
>            Assignee: Mauricio Salatino
>             Fix For: 5.3.0.Beta1
>
>
> KnowledgeAgentDefinitionParser assumes that a spring bean definition has a bean class name, however when the bean extends a parent then it may not, as in the following example:
> 	<bean id="freemarkerConfiguration"  class="freemarker.template.Configuration">        
>         </bean>
> 	
> 	<bean id="workflowFreemarkerConfiguration" parent="freemarkerConfiguration">
> 		<property name="templateLoader">
> 			<bean class="au.com.core.messaging.freemarker.FreemarkerMessageLayoutTemplateLoader" />
> 		</property>
> 	</bean>
> The BeanDefinition for bean "workflowFreemarkerConfiguration" has a null bean class name which causes KnowledgeAgentDefinitionParser.parseInternal to throw an NPE. Specifically this line:
> if ( def.getBeanClassName().equals( StatelessKnowledgeSessionBeanFactory.class.getName() ) ) {

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