Im running Struts, Tiles, Hibernate 2 and Spring in my project and have
been attempting for some time to get the OpenSessionInView pattern to work
without much luck.
I have the filter setup in my web.xml like so :
<filter>
<filter-name>hibernateFilter</filter-name>
<filter-class>
org.springframework.orm.hibernate.support.OpenSessionInViewFilter
</filter-class>
</filter>
<filter-mapping>
<filter-name>hibernateFilter</filter-name>
<url-pattern>*.do</url-pattern>
</filter-mapping>
applicationContext.xml for various things is as follows:
<bean id="dataSource"
class="org.springframework.jndi.JndiObjectFactoryBean">
<property name="jndiName">
<value>java:/JournalDS</value>
</property>
</bean>
<!-- Hibernate SessionFactory -->
<bean id="sessionFactory"
class="org.springframework.orm.hibernate.LocalSessionFactoryBean">
<property name="dataSource">
<ref local="dataSource"/>
</property>
<property name="mappingResources">
<list>
<value>com/rave/journal/model/Activity.hbm.xml</value>
.
.
.
.
.
</list>
</property>
<property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">
net.sf.hibernate.dialect.Oracle9Dialect
</prop>
<prop key="hibernate.show_sql">
false
</prop>
</props>
</property>
</bean>
<!-- Transaction manager for a single Hibernate SessionFactory -->
<bean id="transactionManager"
class="org.springframework.orm.hibernate.HibernateTransactionManager">
<property name="sessionFactory">
<ref local="sessionFactory"/>
</property>
</bean>
Looking at the log output it seems to be closing the Hibernate session after
the first POJO is populated in my Action. The next piece of code tries to
access a collection and bam, down it goes :
.
.
.
[net.sf.hibernate.impl.SessionImpl] executing flush
[net.sf.hibernate.impl.SessionImpl] post flush
[org.springframework.transaction.support.TransactionSynchronizationManager]
Removed value [EMAIL PROTECTED] for
key [EMAIL PROTECTED] from thread
[Ajp13Processor[8009][4]]
[org.springframework.orm.hibernate.SessionFactoryUtils] Closing Hibernate
session
[net.sf.hibernate.impl.SessionImpl] closing session
[net.sf.hibernate.impl.SessionImpl] disconnecting session
[net.sf.hibernate.impl.SessionImpl] transaction completion
[net.sf.hibernate.LazyInitializationException] Failed to lazily initialize a
collection - no session or session was closed
All my mappings have lazy set to true. If I switch them all over to false
the application does run. If I look at all the SQL generated with lazy set
false though it is quite scary how much access is done.
I've attached a bigger excerpt from the log if that will help track down the
issue.
Any ideas what would be causing the Hibernate session to be closed? If I
understand things correctly the OpenSessionInViewFilter should be the thing
closing the session (after everything has run in the Request. From the log
it looks as if org.springframework.orm.hibernate.SessionFactoryUtils is
doing it.
I'd really appreciate some help here. This has been driving me nuts for
days.
Regards
Marty
Martin Ravell
FMS Global
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