Question

I have two queues on my application (Spring3-Hibernate-ActiveMq). Thanks for your comments in advance. I would be glad if you help me avoid the following error:

10:02:41,541 INFO KahaStore:463 – Kaha Store using data directory \tmp\kahadb
10:02:41,542 INFO KahaPersistenceAdapter:185 – Store is locked… waiting 10 seconds for the Store to be unlocked.
10:02:51,542 INFO KahaStore:463 – Kaha Store using data directory \tmp\kahadb
10:02:51,543 INFO KahaPersistenceAdapter:185 – Store is locked… waiting 10 seconds for the Store to be unlocked.
10:03:01,543 INFO KahaStore:463 – Kaha Store using data directory \tmp\kahadb
..
.

And Here is my applicationContext.xml

<amq:connectionFactory id="amqConnectionFactory"
    brokerURL="vm://localhost" />

<bean id="connectionFactory"
    class="org.springframework.jms.connection.CachingConnectionFactory">
    <constructor-arg ref="amqConnectionFactory" />  
    <property name="sessionCacheSize" value="100" />
</bean>

<bean id="jmsTemplateForProduct" class="org.springframework.jms.core.JmsTemplate"
    p:defaultDestinationName="Click.Queue.Product">
    <constructor-arg ref="connectionFactory" /> 
</bean>

<bean id="jmsTemplateForPayment" class="org.springframework.jms.core.JmsTemplate"
    p:defaultDestinationName="Click.Queue.Payment">
    <constructor-arg ref="connectionFactory" /> 
</bean>

<jms:listener-container concurrency="10">
    <jms:listener id="ProductListener" destination="Click.Queue.Product"
        ref="productListener" />
</jms:listener-container>

<jms:listener-container concurrency="10">
    <jms:listener id="PaymentListener" destination="Click.Queue.Payment"
        ref="paymentListener" />
</jms:listener-container>
<!-- ActiveMQ ends -->

Answer 1

Well, I have solved the problem by myself. BTW thanks jkysam for your comments.

The problem was occured because of loading of applicationContext more than once. So, anytime applicationContext is loaded, a new instance of kaha db is created and it results to locking.

What I did is that I seperated jms related configuration from applicationContext. So, I created a new context xml file called jmsContext.xml, and move the jms (and activemq as well) related configuration lines to that file. Then in my test classes, I loaded different context xml’s depend on whether it is a jmsTest or not.

For instance; I have two GenericUnitTest class in order to seperate context configuration. First is:

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = {"/jmsContext.xml"})
public abstract class GenericJmsUnitTest {  
}   

Second one is:

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = {"/applicationContext.xml"})
public abstract class GenericUnitTest { 
}   

And then I extend these classes depend on the test case. Here is the example;

public class ProductQueueTest extends GenericJmsUnitTest{  
@Autowired
private ProductQueueService productQueueService;

@Test
    public void productTest() {   
     productQueueService.sendProduct(); 
    }
}

The non-jms test class sample is:

public class SchedularTest extends GenericUnitTest {
    @Autowired
    private Processor schedulerProcessor;

    @Test
     public void scheduleForProduct() {
        schedulerProcessor.processForProducts();
    }
}

BTW, I exclude component scan filters which are about queue in applicationContext.xml, And include them in jmsContext.xml. Here is the example;

applicationContext xml is below

<context:component-scan base-package="com.project">
  <context:exclude-filter type="regex" expression="com.project.queue.*"/>
  <context:exclude-filter type="regex" expression="com.project.test.queue.*"/>
</context:component-scan>

jmsContext xml is below

 <context:component-scan base-package="com.project.queue"/>
 <context:component-scan base-package="com.project.test.queue"/>