Re: Struts2 WebApp context

[Ian Roughley]

This question will probably result in an answer / better solution if 
asked on the Spring forums.

/Ian
--
Ian Roughley
From Down & Around, Inc.
Consulting * Training / Mentoring * Agile Process * Open Source
web: http://www.fdar.com - email: [EMAIL PROTECTED]



Rushikesh Thakkar wrote:
Thanks Ian and Laurie for looking into this.
Excuse me Laurie, for missing out an imp. info. that "web.xml also contains
spring ContextLoaderListener declaration".

I now feel that it is more a spring / tomcat issue and not a really a
struts2 issue.
I observed the tomcat's console logs while it was shutting down. I could see
the info messages indicating that the spring context was being destroyed.
But when I 'reload' the context of the same web-app using Tomcat Manager
application, I don't see those info messages.

So, I guess I need to
   either change the way tomcat reloads the context (only if it's possible)
   or find out a way to reload spring context when Tomcat reloads the
web-app context.

Correct me if I'm wrong. Direct me if I'm right.. :)

- Rushikesh

On Wed, Feb 13, 2008 at 9:29 PM, Laurie Harper <[EMAIL PROTECTED]> wrote:

  
 > (3) web.xml doesn't contain anything but struts2 filter declaration.

If that's the case, how is Spring getting initialized? Usually you would
configure one of Spring's context listeners, which will take care of
loading the Spring context on startup and destroying it when the
application is shut down / undeployed.

As Ian indicated, you'll need *some* sort of context listener to close
the Spring context (i.e. reverse whatever Spring setup logic you have),
whether it be one of the ones supplied by Spring or your own.

L.

Rushikesh Thakkar wrote:
    
I want to release a database connection while reloading the context
      
(using
    
Tomcat Manager web app) of a Struts2 Web Application. I am also using
      
Spring
    
and hibernate. (Spring's HibernateTemplate, Spring SessionFactory and
      
Apache
    
Commons-dbcp with HSql standalone-database)

As I am using HSql 'standalone' database, even if the web application
context gets reloaded, the database connection is not released while
destroying the context. So I get 'Database is already in use by other
process' error. I want to know whether there is any way to implement
something like "destroy() method of servlet" in a Struts2 application.

I am not sure whether I can do it with spring configuration. Any idea?
      
If
    
there are many ways of doing it, kindly also tell which way is the best
      
for
    
me.

(1) struts.properties:

struts.objectFactory =
      
org.apache.struts2.spring.StrutsSpringObjectFactory
    
(2) applicationContext.xml (my spring configuration file)

<beans default-autowire="autodetect">

    <bean id="myDataSource" class="
      
org.apache.commons.dbcp.BasicDataSource"
    
destroy-method="close">
        <property name="driverClassName" value="org.hsqldb.jdbcDriver"
      
/>
    
        <property name="url"
value="jdbc:hsqldb:file:C:/Projects/db/hsqlTest" />
        <property name="username" value="sa"/>
        <property name="password" value=""/>
    </bean>
    <bean id="mySessionFactory" class="
org.springframework.orm.hibernate3.LocalSessionFactoryBean">
        <property name="dataSource" ref="myDataSource"/>
        <property name="mappingResources">
            <list>


      
 <value>no/bbs/webservice/client/config/model/certificate.hbm.xml</value>
    
        </property>
        <property name="hibernateProperties">
            <props>
                <prop key="hibernate.dialect">
org.hibernate.dialect.HSQLDialect</prop>
                <prop key="hibernate.show_sql">true</prop>
            </props>
        </property>
    </bean>

    <bean id="hibernateTemplate" class="
org.springframework.orm.hibernate3.HibernateTemplate">
        <property name="sessionFactory">
            <ref bean="mySessionFactory"/>
        </property>
    </bean>
    <bean id="testClientDao" class="
webservice.client.dao.hibernate.TestClientDAO">
        <property name="hibernateTemplate">
            <ref bean="hibernateTemplate"/>
        </property>
    </bean>
    <!-- Some Strus2-Actions follow -->
</beans>

(3) web.xml doesn't contain anything but struts2 filter declaration.

      
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