[ http://jira.andromda.org/browse/SPRING-194?page=all ]
Jens Vagts reopened SPRING-194:
-------------------------------
Assign To: Jens Vagts (was: Chad Brandon)
It's not JBoss, who is caching the jndi object, it's spring. The new
(hardcoded) setting results in a jndi lookup for each data request (worst case:
each query).
This setting makes sense only if one requires hot-deployment of the *jndi
datasource.* Hot-deployment of the application does not require it, since it
makes the lookup on startup/deploy.
I'll at a new namespace property "jndiDataSourceCaching" to the spring
cartridge to be able to configure both scenarios. The default will be "true",
since it's the "old" behaviour.
> Error accessing application on JBoss after repeated deployments of *-ds.xml
> files.
> ----------------------------------------------------------------------------------
>
> Key: SPRING-194
> URL: http://jira.andromda.org/browse/SPRING-194
> Project: Spring Cartridge
> Type: Improvement
> Versions: 3.2-RC2, 3.2
> Environment: CPU: Intel Pentium-4 M with Centrino @ 2GHz, Intel dual-core
> Xeon @ 3GHz
> Operating system: Windows XP Professional Service Pack 2, RedHat Linux
> Enterprise Edition
> JVM version: Sun JVM 1.5 patch 8
> JBoss application server version: 4.0.04
> Database: MySQL
> AndroMDA version: 3.2
> Reporter: Manish Baxi
> Assignee: Jens Vagts
> Priority: Critical
> Attachments: applicationContext-dataSource.xml.vsl
>
> If we deploy an application repeatedly to a running JBoss application server,
> the application becomes unusable, even though JBoss runs fine and does not
> show any errors of its own. JBoss server logs show the following exception
> message:
> You are trying to use a connection factory that has been shut down:
> ManagedConnectionFactory is null.
> After lots of reading, investigation and trials-and-errors we reached the
> conclusion that the error occurs only if th *-ds.xml files are released along
> with the EAR or the WAR file. If we manually deploy just the EAR file, we
> can keep JBoss and the application running forever.
> After spending some time going through JBoss documentation, we made a change
> to our applicationContext-dataSource.xml file used by SPRING. The change was
> as follows:
> ================================================================================================
> Original content
> ================================================================================================
> <!-- JNDI DataSource for J2EE environments -->
> <bean id="dataSource" class="my-application">
> <property
> name="jndiName"><value>jndi://my-application</value></property>
> </bean>
> ================================================================================================
> ================================================================================================
> New content
> ================================================================================================
> <!-- JNDI DataSource for J2EE environments -->
> <bean id="dataSource" class="my-application">
> <property
> name="jndiName"><value>jndi://my-application</value></property>
> <property name="cache"><value>false</value></property>
> <property
> name="proxyInterface"><value>javax.sql.DataSource</value></property>
> </bean>
> ================================================================================================
> As can be seen, we added two more properties to the Data Source bean. This
> prevents JBoss from caching the data source objects when an application is
> undeployed and create them afresh when the application is deployed again.
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