I think before giving a short answer... I will give you a detailed
explanation via a links:
http://wiki.apache.org/myfaces/HibernateAndMyFaces?highlight=%28hibernate%29
This small article describes exactly the problems you run into and how
to solve them...
Werner
Rick Gruber-Riemer wrote:
Hej
I use MyFaces (1.0.9), Hibernate (3.0.5) and Spring (1.22) in my
webapplication. When I get a list of records from the database in a table or
make a new record using a form everything works fine. However when I try to
edit a record in a form, I get a org.hibernate.LazyInitializationException
error on opening the editform.
I understand this has something to do with the Hibernate sessions. And it has
nothing to do with MyFaces in particular. And I have found some hints by
googeling like Spring's OpenSessionInViewFilter. However I do not have a clue
what to change where in the configuration.
=> Has somebody used JSF+Spring+Hibernate successfully?
=> Downloadable sample code?
=> Do I need the jsf-spring integration library?
Any hint would be much appreciated ... Rick
<hibernate-mapping>
<class
name="dk.trafikstyrelsen.data.transfer.dto.railsecurity.danafile.ScanJourLink"
table="DANAFILE.SCANJOUR_LINK">
<id name="id" type="long" column="ROW_ID">
<meta attribute="scope-set">protected</meta>
<generator class="sequence">
<param name="sequence">DANAFILE.SEQNUMBER</param>
</generator>
</id>
<version column="REVISION" name="revision" />
<property name="objId" type="string" not-null="true"/>
<property name="scanJourNumber" type="int" column="SCANJOUR_NUMBER"
not-null="true"/>
<property name="notes" type="string" column="NOTES"
not-null="false"/>
<property name="active" type="yes_no" column="ACTIVE"
not-null="true" />
<property name="createdBy" type="string" column="CREATED_BY"
not-null="true"/>
<property name="lastUpdatedBy" type="string" column="LAST_UPD_BY"
not-null="true"/>
<property name="createdDate" type="timestamp" column="CREATED_DT"
not-null="true"/>
<property name="lastUpdatedDate" type="timestamp" column="LAST_UPD_DT"
not-null="true"/>
</class>
</hibernate-mapping>
<beans>
<bean id="danafileHbmDS" class="oracle.jdbc.pool.OracleDataSource">
<property
name="driverType"><value>oracle.jdbc.OracleDriver</value></property>
<property
name="URL"><value>jdbc:oracle:thin:@10.0.0.3:1521:dhdvl</value></property>
<property name="user"><value>danafile_web</value></property>
<property name="password"><value>styr3ls3n</value></property>
</bean>
<!-- Hibernate SessionFactories -->
<bean id="danafileHbmSF"
class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
<property name="dataSource"><ref
local="danafileHbmDS"/></property>
<property name="mappingResources">
<list>
<value>dk/trafikstyrelsen/data/transfer/dto/railsecurity/danafile/ScanJourLink.hbm.xml</value>
</list>
</property>
<property name="hibernateProperties">
<props>
<prop
key="hibernate.dialect">org.hibernate.dialect.Oracle9Dialect</prop>
<prop key="hibernate.query.substitutions">yes 'Y', no
'N'</prop>
<prop key="hibernate.show_sql">true</prop>
</props>
</property>
</bean>
<!-- Transaction manager for a single Hibernate SessionFactory
(alternative to JTA) -->
<bean id="transactionManager"
class="org.springframework.orm.hibernate3.HibernateTransactionManager">
<property name="sessionFactory"><ref
local="danafileHbmSF"/></property>
</bean>
<bean id="scanJourLinkDAO"
class="dk.trafikstyrelsen.data.transfer.dao.railsecurity.danafile.ScanJourLinkHbmDAO">
<property name="sessionFactory"><ref
local="danafileHbmSF"/></property>
</bean>
</beans>
ERROR - LazyInitializationException.<init>(19) | could not initialize proxy -
the owning Session was closed
org.hibernate.LazyInitializationException: could not initialize proxy - the
owning Session was closed
at
org.hibernate.proxy.AbstractLazyInitializer.initialize(AbstractLazyInitializer.java:53)
at
org.hibernate.proxy.AbstractLazyInitializer.getImplementation(AbstractLazyInitializer.java:84)
at
org.hibernate.proxy.CGLIBLazyInitializer.intercept(CGLIBLazyInitializer.java:134)
at
dk.trafikstyrelsen.data.transfer.dto.railsecurity.danafile.ScanJourLink$$EnhancerByCGLIB$$c24a4569.getScanJourNumber(<generated>)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at
org.apache.myfaces.el.PropertyResolverImpl.getProperty(PropertyResolverImpl.java:419)
at
org.apache.myfaces.el.PropertyResolverImpl.getValue(PropertyResolverImpl.java:104)
at
org.apache.myfaces.el.ELParserHelper$MyPropertySuffix.evaluate(ELParserHelper.java:555)
at org.apache.commons.el.ComplexValue.evaluate(ComplexValue.java:145)
at
org.apache.myfaces.el.ValueBindingImpl.getValue(ValueBindingImpl.java:441)
