Hibernate version: 3.3.0


Hi,
When I run my application´s test I get the following exception:

org.hibernate.LazyInitializationException: failed to lazily initialize a collection of role: com.telvent.padron.bi.territorio.model.Consulado.paises, no session or session was closed
at org.hibernate.collection.AbstractPersistentCollection.throwLazyInitializationException(AbstractPersistentCollection.java:358)
at org.hibernate.collection.AbstractPersistentCollection.throwLazyInitializationExceptionIfNotConnected(AbstractPersistentCollection.java:350)
at org.hibernate.collection.AbstractPersistentCollection.initialize(AbstractPersistentCollection.java:343)
at org.hibernate.collection.AbstractPersistentCollection.read(AbstractPersistentCollection.java:86)
at org.hibernate.collection.PersistentBag.iterator(PersistentBag.java:249)
at com.telvent.padron.bi.territorio.service.ConsuladoService.saveConsulado(ConsuladoService.java:109)
at com.telvent.padron.bi.territorio.service.ConsuladoService$$FastClassByCGLIB$$c70548f1.invoke(<generated>)
at net.sf.cglib.proxy.MethodProxy.invoke(MethodProxy.java:149)
at org.springframework.aop.framework.Cglib2AopProxy$CglibMethodInvocation.invokeJoinpoint(Cglib2AopProxy.java:675)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:154)
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:107)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:176)
at org.springframework.aop.framework.Cglib2AopProxy$DynamicAdvisedInterceptor.intercept(Cglib2AopProxy.java:616)
at com.telvent.padron.bi.territorio.service.ConsuladoService$$EnhancerByCGLIB$$f2dfee95.saveConsulado(<generated>)
at com.telvent.padron.bi.territorio.service.ConsuladoServiceTest.testModify(ConsuladoServiceTest.java:153)
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 junit.framework.TestCase.runTest(TestCase.java:164)
at junit.framework.TestCase.runBare(TestCase.java:130)
at junit.framework.TestResult$1.protect(TestResult.java:110)
at junit.framework.TestResult.runProtected(TestResult.java:128)
at junit.framework.TestResult.run(TestResult.java:113)
at junit.framework.TestCase.run(TestCase.java:120)
at junit.framework.TestSuite.runTest(TestSuite.java:228)
at junit.framework.TestSuite.run(TestSuite.java:223)
at org.junit.internal.runners.OldTestClassRunner.run(OldTestClassRunner.java:35)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:38)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:460)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:673)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:386)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:196)



The funny part it´s that when I run the test´s debug, it works some times, but everytime I get a different loadof the collection. For example, I get an empty list and other times I get an element.

The code of classes are:


/*Consulado*/


public class Consulado extends Descriptora implements IAuditable, Serializable
{

.....
.....
.....
@ManyToMany
(
mappedBy="consulados",
cascade={CascadeType.PERSIST, CascadeType.MERGE},
targetEntity=Pais.class
)
......
......
......
}

/*Pais*/
public class Pais extends Descriptora implements Serializable
{

......
......
......
@ManyToMany
(
cascade={CascadeType.PERSIST, CascadeType.MERGE},
targetEntity=Consulado.class
)
@JoinTable(
name="TRR_PAIS_CONSULADO",
joinColumns={@JoinColumn(name="NIDEN_PAIS")},
inverseJoinColumns={@JoinColumn(name="NIDEN_CONSULADO")}
)
@ForeignKey(name="FK_PAISCONSULADO_PAIS")
private List<Consulado> consulados;
......
......
......
}

/* JpaConsuladoDao */



/**
* Obtiene el objeto actualizado con los datos directos de la base de datos
* evitando la sesion de hibernate.
*
* @param numerero
* @return
*/
public Consulado getConsuladoFisico(Consulado objetoActual) {
logger.debug("getConsuladoFisico - Start");
boolean esta=false;
//Si no sacamos el objeto actual de la session da error el refresh
getHibernateTemplate().evict(objetoActual);
//Recargamos de base de datos el objeto de nuevo
Consulado objetoFisico = new Consulado();
objetoFisico.setId(objetoActual.getId());
getHibernateTemplate().refresh(objetoFisico);
//Sacamos el objeto de Fisico de la session para al actualizar el id no de error al salvar.
getHibernateTemplate().evict(objetoFisico);
//Lo he sacado de sesion y lo vuelvo a meter para que no me de problemas el lazy
if(getHibernateSession().contains(objetoActual))
getHibernateSession().lock(objetoActual, LockMode.NONE);
return objetoFisico;
}


The object objetoFisico should be able to obtain a list with objects from class pais. But it doesn´t. Later on when I try to access such info
it does not work.

hi

you can try this :

It does work if I put fetch.eager, but I need it to be lazy.
Thanks

It does work if I put fetch.eager, but I need it to be lazy.
Thanks

It does work if I put fetch.eager, but I need it to be lazy.
Thanks

If lazy, you must do a query on the database for get the list with objects from class pais

Not really,

"Lazy collection fetching - a collection is fetched when the application invokes an operation upon that collection. (This is the default for collections.) "

I found the solution:

Hibernate does not support lazy initialization for detached objects. The fix is to move the code that reads from the collection to just before the transaction is committed.

only if the Hibernate session is already open, and your log say :

Hi again,
After doing some more testing, I have noticed that I does not work when running the test,but it does work when I do a debug.
Moreover, if I do the test more than one time with the same consulado, it only brings the paises the first time I do the debug, the second time I get an empty list.