Configuring org.hibernate.jmx.HibernateService MBean

[zambranag]

I am trying to configured the HibernateService message bean using
an existent session factory, so that it can be managed remotetly.
however, there is not sessionFactory property to set, like there is in
the other Hibernate message bean, StatisticsService. From reading
the javadocs for HibernateService, it seems like this class creates
its own Session Factory, but it does not exposed it, I will like to
keep using the session factory I have created with LocalSessionFactoryBean.

Here is a the relevant Spring configuration:

<!-- Hibernate Session Factory -->

<bean id="sessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFac toryBean" lazy-init="false">
<property name="dataSource">
<ref local="dataSource"/>
</property>
<property name="mappingJarLocations">
<value>dbmaps.jar</value>
</property>
<property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">${hibernate.dialect}</prop>
<prop key="hibernate.max_fetch_depth">${hibernate.max_fetch_depth}</prop>
</props>
</property>
</bean>


<!-- ************** Hibernate JMX Beans **************** -->

<bean id="statisticsBean" class="org.hibernate.jmx.StatisticsService">
<property name="statisticsEnabled">
<value>false</value>
</property>
<property name="sessionFactory"><ref local="sessionFactory"/></property>
</bean>


thanks

Gustavo

[Costin Leau]

Take a look at the sources and see what the service is doing - I think it firsts looks a session factory through JNDI and in case it doesn't find one it create one.

[zambranag]

as if the JNDI name passed is used to bind a Session Factory, that is created, the HibernateService

---> From the javadocs

public void setJndiName(String jndiName)Description copied from interface: HibernateServiceMBean
The JNDI name to bind to the SessionFactory

Specified by:
setJndiName in interface HibernateServiceMBean
Parameters:
jndiName -


Now, I will hope that you are correct that the JNDI passed, it is
used to de-reference an existent SessionFactory, that way, I can
just register my existent one with a Spring JNDI Exporter class. However,
if it is not, I will not be able to use the HibernateService MBean, as
I really prefer to configure the SessionFactory myself with a DataSource of my choice, and the HibernateService class does not give that option.

Thanks for your help. I will download the Hibernate source code in the next few days and take a look.

Gustavo

[zambranag]

Well, the setJndiName() method in HibernateService, it is to bind
a name to the SessionFactory that HibernateService creates, there is not option to pass this in, the top comment in the class also makes
this clear.


/**
* Implementation of <tt>HibernateServiceMBean</tt>. Creates a
* <tt>SessionFactory</tt> and binds it to the specified JNDI name.<br>
* <br>
* All mapping documents are loaded as resources by the MBean.
* @see HibernateServiceMBean
* @see org.hibernate.SessionFactory
* @author John Urberg, Gavin King
*/
public class HibernateService extends ExternalSessionFactoryConfig implements HibernateServiceMBean {


Furthermore, the builSessionFactory method in the class is not made
public.

I guess for now I can not use an external configurable DataSource
and use the HibernateService MBean, wonder why ?

Perhaps there is something I missed, if anybody sees a way
around this, let me know.

My goal is to use the Apache Data Source to create a SessionFactory
and then create a HibernateService MBean that uses that factory, just
like the StatisticsService has a sessionFactory() method.

Gustavo

[Costin Leau]

Right. You can check the HB forums for more info but I think the initial purpose of the HibernateService was to create the session and publish it to JNDI. I guess you can just simply create your own SessionFactory and then put a JMX wrapper around as the service is not that reusable, at least IMO.

[jasonab]

I did manage to get it running in Tomcat (w/Spring) with the following code:

<bean id="registry"
class="org.springframework.remoting.rmi.RmiRegistryFactor yBean">
<property name="port" value="1099" />
</bean>


<bean id="statisticsBean" class="org.hibernate.jmx.StatisticsService">
<property name="sessionFactory" ref="sessionFactory" />
</bean>

<bean id="exporter" class="org.springframework.jmx.export.MBeanExporter">
<property name="beans">
<map>
<entry key="bean:name=statistics" value-ref="statisticsBean" />
</map>
</property>
</bean>

<bean id="clientConnector"
class="org.springframework.jmx.support.ConnectorServerFac toryBean">
<property name="objectName" value="connector:name=rmi" />
<property name="serviceUrl"
value="service:jmx:rmi://localhost/jndi/rmi://localhost:1099/myconnector" />
</bean>