[rules-users] Persistence in Drools 6

[dushman at gmail.com]

Hi Jean Philippe,

I managed to get around using kie-spring with KieScanner integration. if you
use exact configuration as below you will be able to setup persistence,
scanner together with spring 6.1.0. 


<bean id="kReleaseId" class="org.drools.compiler.kproject.ReleaseIdImpl">
		<constructor-arg index="0" value="xx.yy.zz" />
		<constructor-arg index="1" value="artifiactl" />
		<constructor-arg index=&quot;2&quot; value=&quot;&lt;b>LATEST*" />
</bean>

<kie:kmodule id="kModule">
		<kie:kbase name=&quot;&lt;b>defaultKieBase*">
			<kie:ksession name=&quot;&lt;b>defaultKieSession*">
				<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 id="kiePostProcessor"
class="org.kie.spring.KModuleBeanFactoryPostProcessor">
		<property name="releaseId" ref="kReleaseId" />
</bean>

In a separate bean execute below code to set-up scanner (can use
init-method).

                ReleaseId releaseId = (ReleaseId)
applicationContext.getBean("kReleaseId");
		KieServices ks = KieServices.Factory.get();
		KieContainer kieContainer = ks.newKieContainer(releaseId);
		KieScanner kieScanner = ks.newKieScanner(kieContainer);
		//kieScanner.start(5000L);
		kieScanner.scanNow();


Note highlighted text snippets. use them as is.  Caveat is , when you set-up
kbase with a release id and kiecontainer, default  beans created by spring
would be ignored. instead   container would create default kbase and a
ksession(s)(stateful,stateless) for you. those names should be included as
highlighted.

This is totally a workaround I found while debugging and yet to test if
scanner functionality is working properly.



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