I agree - I am doing the same here, but the first time I ran my app and
got a stack over flow error I was a little worried.
If bidirectional relationships need to be recreated on the persistent
side you can use a utility class to do that.
___________________________________________
Gavin Hogan
Programmer/Analyst
The State University of New York
State University Plaza
Albany, NY 12246
Phone 518-443-5481
fax 518-443-5809
e-mail [EMAIL PROTECTED]
-----Original Message-----
From: Bill Graham [mailto:[EMAIL PROTECTED]
Sent: Thursday, May 17, 2007 2:25 PM
To: [email protected]
Subject: Re: [xfire-user] Hibernate+Spring+XFire could not
initialize proxy - the owning Session was closed
I use Hibernate to power a WS with Parent-Child relationships
and it works great. You do have to pay attention to how the loading is
done though, as with all Hibernate apps.
Using *.aegis.xml mappings (along side my *.hbm.xml files) with
a few 'ignore' settings helps keep circular Parent-Child references from
happening.
----- Original Message ----
From: Daniel King <[EMAIL PROTECTED]>
To: [email protected]
Sent: Thursday, May 17, 2007 6:28:45 AM
Subject: RE: [xfire-user] Hibernate+Spring+XFire could not
initialize proxy - the owning Session was closed
I use XFire 1.2.5 and Hibernate also. I have a few objects that
have parent/child relation. I'm using the Criteria API and *alias* to
load whatever objects I need. This way I don't receive a lazy
initialization exception.
Daniel King, R2D2, C3P0
Application Engineer
Web Team
Nemours
Office: (904) 288-5643
Fax: (904) 288-5758
*** Call me Daniel ***
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________________________________
From: Slawomir Krolik [mailto:[EMAIL PROTECTED]
Sent: Thursday, May 17, 2007 3:42 AM
To: [email protected]
Subject: Re: [xfire-user] Hibernate+Spring+XFire could not
initialize proxy - the owning Session was closed
OpenSessionInView solved problem, I was searching for other
solution but didn't find it
Yes I use DTO Objects, but when I try to fill DTO object with
data from persisten classes I got lazy exception like in first email...
Maybe I'm trying to fill DTO in wrong place? I do this in class
that is exposed as Web Service implementation class
it looks like this:
<Persistent Objects>
<DAOS>
<CTRL>
<Transaction Proxy>
<Web Service Class> <- here I'm trying to fill DTO Objects
2007/5/17, Tomek Sztelak <[EMAIL PROTECTED] >:
IMHO returning Hibernate objects with webservice isn't a good
idea.
Such objects often have parent<->child relations which is hard
to send
using document style. Maybe you can introduce DTOs.
On 5/17/07, Bill Graham < [EMAIL PROTECTED]> wrote:
>
> This is probably caused by Hibernate lazy loading. The
Hibernate session was
> closed before the XFire servlet called methods on your beans
to marshall
> into XML. The fix is to use Spring's OpenSessionInViewFilter
around your
> XFire servlet.
>
>
> ----- Original Message ----
> From: Slawomir Krolik < [EMAIL PROTECTED]
<mailto:[EMAIL PROTECTED]> >
> To: [email protected]
> Sent: Wednesday, May 16, 2007 5:30:57 PM
> Subject: [xfire-user] Hibernate+Spring+XFire could not
initialize proxy -
> the owning Session was closed
>
> Hi!
>
> I have problem and I didn't found any solution after few days
of searching
> When I'm trying to any lazy initialized collection or object
I've got sth
> like that:
> -----------cut----------------------
> 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(AbstractLazyIniti
alizer.java:60)
> at
> org.hibernate.proxy.AbstractLazyInitializer.getImplementation
(AbstractLazyInitializer.java:111)
> at
> org.hibernate.proxy.pojo.cglib.CGLIBLazyInitializer.invoke
> (CGLIBLazyInitializer.java:172)
> at
>
org.saweko.om.security.model.Role$$EnhancerByCGLIB$$50c1ce29.fillDTO
(<generated>)
> at
> org.saweko.om.security.model.User.fillDTO(User.java:195)
> ...
> -----------cut----------------------
> I'm using Spring 2.05 with XFire 1.6 and Hibernate 3.2.0
> I'm using JSR181 anotations to expose my
SecurityService(interface) and
> SecurityServiceImpl(Implementation class) as XFire WS
>
> My application structure:
>
>
>
[Permissions]----(Set)many-to-one----[User]---(Set)many-to-one---[Role]
> <Persistent>, collections are bi-directional
>
> next I've DAO's objects that operates on POJO's, mostly CRUD
operations, one
> persistent object type - one DAO to perform operations
> DAO classes are used by one class named Security Controller
that perform
> more complicated operations
> next Security Controller is wrapped using
TransactionProxyFactoryBean for
> proper handling transactions
> and finally there is interface called SecurityService and
implementing it
> class SecurityServiceImpl that uses proxied SecurityController
class for
> exposing
> it's operations as web service using JSR181
>
> Operations performed on simple data types works perfectly,
operations
> working with collections of simple data types like Set<String>
works good
> too but
> when I try access any of lazy initialized objects exception
occurs
> My applicationContext.xml:
>
> <import
> resource="classpath:org/codehaus/xfire/spring/xfire.xml"
> />
> <bean id="xfire.annotationServiceFactory"
>
> class="org.codehaus.xfire.annotations.AnnotationServiceFactory
> ">
> <constructor-arg index="0">
> <ref bean="xfire.commonsAnnotations " />
> </constructor-arg>
> <constructor-arg index="1">
> <ref bean="xfire.transportManager" />
> </constructor-arg>
> <constructor-arg index="2">
> <ref bean="xfire.aegisBindingProvider " />
> </constructor-arg>
> </bean>
> <bean id=" xfire.commonsAnnotations"
>
>
class="org.codehaus.xfire.annotations.jsr181.Jsr181WebAnnotations"
> />
> <bean id="LocalDB"
> ...connection 2 local postgresql db .../>
> <bean id="HBSessionFactory"
>
>
class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
> ....hibernate session factory
> </bean>
> <bean id="userDAOtarget"
> .../>
> <bean id="roleDAOtarget"
> .../>
> <bean id="permissionDAOtarget"
> .../>
> <bean id="securityCtrlTarget"
>
> class="org.saweko.om.security.ctrl.impl.SecurityController">
> <property name="userDAO">
> <ref bean="userDAOtarget" />
> </property>
> <property name="roleDAO">
> <ref bean="roleDAOtarget" />
> </property>
> <property name="permissionDAO">
> <ref bean="permissionDAOtarget" />
> </property>
> </bean>
>
> <bean id="securityControllerProxy"
>
> class="
org.springframework.transaction.interceptor.TransactionProxyFactoryBean
> ">
> <property name="transactionManager">
> <ref bean="transactionManager" />
> </property>
> <property name="target">
> <ref bean="securityCtrlTarget" />
> </property>
> <property name="transactionAttributes">
> <props>
> <prop key="*">PROPAGATION_REQUIRED</prop>
> </props>
> </property>
> </bean>
> <bean id="transactionManager"
>
>
class="org.springframework.orm.hibernate3.HibernateTransactionManager">
> <property name="sessionFactory">
> <ref bean="HBSessionFactory" />
> </property>
> </bean>
> <bean id="securityServiceBean"
>
> class="org.saweko.om.service.impl.SecurityServiceImpl ">
> <property name="securityController">
> <ref bean="securityControllerProxy" />
> </property>
> </bean>
> <bean id="securityServiceXfire"
>
> class="org.codehaus.xfire.spring.remoting.XFireExporter">
> <property name="serviceBean">
> <ref bean="securityServiceBean" />
> </property>
> <property name="serviceClass">
> <value>
>
> org.saweko.om.service.impl.SecurityServiceImpl
> </value>
> </property>
> <property name="serviceFactory">
> <ref bean="xfire.annotationServiceFactory" />
> </property>
> </bean>
> <bean id="addressingHandler"
>
> class="org.codehaus.xfire.addressing.AddressingInHandler"
> />
>
>
> What is solution 2 problem?
>
>
>
>
>
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