Atomikos Forum
Not able to use a javax.persistence.GeneratedValue annotation |
Hi,
I wrote a small Spring-Hibernate application that uses Atomikos(version-3.7.0) as a distributed transaction manager.
I have an unsolved issue with the auto generated id,just to make it clear, I'm able to get the hibernate session (associated to the current transaction) and select or insert
new entities, the problem is when I'm using the @GeneratedValue.
The following is an entity that I mapped to a table:
import javax.persistence.Access;
import javax.persistence.AccessType;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.Table;
@Entity
@Table(name = "USERS")
@Access(AccessType.FIELD)
public class User {
@Id
@GeneratedValue(strategy=GenerationType.AUTO)
public int id;
@Column(name = "NAME")
public String name;
public User() {
}
}
The DAO I use:
@Repository
public class UsersDAO {
@Autowired
private HibernateTemplate template;
@Transactional
public <T> T findById(Class<T> clazz,Integer id){
return (T) template.get(clazz, id);
}
@Transactional(propagation=Propagation.REQUIRED, readOnly=false)
public void save(User user){
template.persist(user);
}
}
And the Spring configuration XML:
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:p="http://www.springframework.org/schema/p"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd">
<context:annotation-config />
<bean id="userTransactionService" class="com.atomikos.icatch.config.UserTransactionServiceImp" init-method="init" destroy-method="shutdownForce">
<constructor-arg>
<props>
<prop key="com.atomikos.icatch.service">com.atomikos.icatch.standalone.UserTransactionServiceFactory</prop>
</props>
</constructor-arg>
</bean>
<bean id="AtomikosTransactionManager" class="com.atomikos.icatch.jta.UserTransactionManager" init-method="init" destroy-method="close" depends-on="userTransactionService">
<!-- When close is called, should we force transactions to terminate or not? -->
<property name="forceShutdown" value="false" />
<!-- IMPORTANT: disable startup because the userTransactionService above does this -->
<property name="startupTransactionService" value="false"/>
</bean>
<bean id="AtomikosUserTransaction" class="com.atomikos.icatch.jta.UserTransactionImp" depends-on="userTransactionService">
<property name="transactionTimeout" value="300" />
</bean>
<!---
Configure the Spring framework to use JTA transactions from Atomikos
-->
<bean id="jtaTransactionManager" class="org.springframework.transaction.jta.JtaTransactionManager" depends-on="userTransactionService">
<property name="transactionManager" ref="AtomikosTransactionManager" />
<property name="userTransaction" ref="AtomikosUserTransaction" />
</bean>
<bean id="mydatasource" class="com.atomikos.jdbc.AtomikosDataSourceBean" init-method="init" destroy-method="close">
<property name="uniqueResourceName" value="XADBMS" />
<property name="xaDataSourceClassName" value="com.mysql.jdbc.jdbc2.optional.MysqlXADataSource" />
<property name="xaProperties">
<props>
<prop key="user">root</prop>
<prop key="password">1234</prop>
<prop key="URL">jdbc:mysql://localhost:3306/test_transactions1</prop>
</props>
</property>
<property name="minPoolSize" value="1" />
<property name="maxPoolSize" value="50" />
</bean>
<bean id="sessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean" >
<property name="configLocation" value="classpath:hibernate.cfg.xml" />
<qualifier value="sessionFactory"/>
<property name="configurationClass" value="org.hibernate.cfg.AnnotationConfiguration" />
<property name="dataSource" ref="mydatasource" />
<property name="hibernateProperties">
<props>
<prop key="hibernate.show_sql" >true</prop>
<prop key="hibernate.formate_sql">true</prop>
<!-- TRANSACTION_READ_UNCOMMITTED 1, TRANSACTION_READ_COMMITTED 2, TRANSACTION_REPEATABLE_READ 4, TRANSACTION_SERIALIZABLE 8 -->
<prop key="hibernate.connection.isolation">4</prop>
<prop key="hibernate.max_fetch_depth">3</prop>
<prop key="hibernate.dialect">org.hibernate.dialect.MySQL5InnoDBDialect</prop>
<prop key="hibernate.transaction.manager_lookup_class">com.atomikos.icatch.jta.hibernate3.TransactionManagerLookup</prop>
<prop key="hibernate.transaction.factory_class">com.atomikos.icatch.jta.hibernate3.AtomikosJTATransactionFactory</prop>
<prop key="hibernate.connection.release_mode">after_transaction</prop>
<prop key="hibernate.current_session_context_class">jta</prop>
<prop key="hibernate.connection.autocommit">true</prop>
<prop key="hibernate.c3p0.preferredTestQuery">SELECT 1</prop>
<prop key="hibernate.bytecode.provider">javassist</prop>
</props>
</property>
</bean>
<bean id="hibernateTemplate" class="org.springframework.orm.hibernate3.HibernateTemplate">
<property name="sessionFactory" ref="sessionFactory" />
</bean>
<tx:annotation-driven transaction-manager="jtaTransactionManager" />
<bean id="appContextHolder" class="com.inneractive.testAtomikos.ApplicationContext" />
<context:component-scan base-package="com.inneractive.testAtomikos"/>
</beans>
The issue is, a java.lang.NullPointerException, the stack trace as follow:
java.lang.NullPointerException
at org.hibernate.jdbc.AbstractBatcher.closePreparedStatement(AbstractBatcher.java:563)
at org.hibernate.jdbc.AbstractBatcher.closeStatement(AbstractBatcher.java:291)
at org.hibernate.id.insert.AbstractReturningDelegate.releaseStatement(AbstractReturningDelegate.java:82)
at org.hibernate.id.insert.AbstractReturningDelegate.performInsert(AbstractReturningDelegate.java:60)
at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:2329)
at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:2836)
at org.hibernate.action.EntityIdentityInsertAction.execute(EntityIdentityInsertAction.java:71)
at org.hibernate.engine.ActionQueue.execute(ActionQueue.java:268)
at org.hibernate.event.def.AbstractSaveEventListener.performSaveOrReplicate(AbstractSaveEventListener.java:321)
at org.hibernate.event.def.AbstractSaveEventListener.performSave(AbstractSaveEventListener.java:204)
at org.hibernate.event.def.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:130)
at org.hibernate.event.def.DefaultPersistEventListener.entityIsTransient(DefaultPersistEventListener.java:179)
at org.hibernate.event.def.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:135)
at org.hibernate.event.def.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:61)
at org.hibernate.impl.SessionImpl.firePersist(SessionImpl.java:800)
at org.hibernate.impl.SessionImpl.persist(SessionImpl.java:774)
at org.hibernate.impl.SessionImpl.persist(SessionImpl.java:778)
at org.springframework.orm.hibernate3.HibernateTemplate$21.doInHibernate(HibernateTemplate.java:796)
at org.springframework.orm.hibernate3.HibernateTemplate.doExecute(HibernateTemplate.java:406)
at org.springframework.orm.hibernate3.HibernateTemplate.executeWithNativeSession(HibernateTemplate.java:374)
at org.springframework.orm.hibernate3.HibernateTemplate.persist(HibernateTemplate.java:793)
at com.inneractive.testAtomikos.UsersDAO.save(UsersDAO.java:23)
at com.inneractive.testAtomikos.UsersDAO$$FastClassByCGLIB$$f1776210.invoke(<generated>)
at net.sf.cglib.proxy.MethodProxy.invoke(MethodProxy.java:191)
at org.springframework.aop.framework.Cglib2AopProxy$CglibMethodInvocation.invokeJoinpoint(Cglib2AopProxy.java:688)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150)
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:110)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
at org.springframework.aop.framework.Cglib2AopProxy$DynamicAdvisedInterceptor.intercept(Cglib2AopProxy.java:621)
at com.inneractive.testAtomikos.UsersDAO$$EnhancerByCGLIB$$822a0c8c.save(<generated>)
at com.inneractive.testAtomikos.TestAtomikos.testHibernateConfigured(TestAtomikos.java:34)
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:597)
at org.testng.internal.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:81)
at org.testng.internal.MethodInvocationHelper$1.runTestMethod(MethodInvocationHelper.java:177)
at org.springframework.test.context.testng.AbstractTestNGSpringContextTests.run(AbstractTestNGSpringContextTests.java:158)
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:597)
at org.testng.internal.MethodInvocationHelper.invokeHookable(MethodInvocationHelper.java:189)
at org.testng.internal.Invoker.invokeMethod(Invoker.java:666)
at org.testng.internal.Invoker.invokeTestMethod(Invoker.java:842)
at org.testng.internal.Invoker.invokeTestMethods(Invoker.java:1166)
at org.testng.internal.TestMethodWorker.invokeTestMethods(TestMethodWorker.java:125)
at org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:109)
at org.testng.TestRunner.runWorkers(TestRunner.java:1172)
at org.testng.TestRunner.privateRun(TestRunner.java:757)
at org.testng.TestRunner.run(TestRunner.java:608)
at org.testng.SuiteRunner.runTest(SuiteRunner.java:334)
at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:329)
at org.testng.SuiteRunner.privateRun(SuiteRunner.java:291)
at org.testng.SuiteRunner.run(SuiteRunner.java:240)
at org.testng.SuiteRunnerWorker.runSuite(SuiteRunnerWorker.java:52)
at org.testng.SuiteRunnerWorker.run(SuiteRunnerWorker.java:86)
at org.testng.TestNG.runSuitesSequentially(TestNG.java:1158)
at org.testng.TestNG.runSuitesLocally(TestNG.java:1083)
at org.testng.TestNG.run(TestNG.java:999)
at org.testng.remote.RemoteTestNG.run(RemoteTestNG.java:111)
at org.testng.remote.RemoteTestNG.initAndRun(RemoteTestNG.java:203)
at org.testng.remote.RemoteTestNG.main(RemoteTestNG.java:174)
Does any one know/familiar with this issue?
Is it a Spring/Hibernate/Atomikos issue?
I wrote a small Spring-Hibernate application that uses Atomikos(version-3.7.0) as a distributed transaction manager.
I have an unsolved issue with the auto generated id,just to make it clear, I'm able to get the hibernate session (associated to the current transaction) and select or insert
new entities, the problem is when I'm using the @GeneratedValue.
The following is an entity that I mapped to a table:
import javax.persistence.Access;
import javax.persistence.AccessType;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.Table;
@Entity
@Table(name = "USERS")
@Access(AccessType.FIELD)
public class User {
@Id
@GeneratedValue(strategy=GenerationType.AUTO)
public int id;
@Column(name = "NAME")
public String name;
public User() {
}
}
The DAO I use:
@Repository
public class UsersDAO {
@Autowired
private HibernateTemplate template;
@Transactional
public <T> T findById(Class<T> clazz,Integer id){
return (T) template.get(clazz, id);
}
@Transactional(propagation=Propagation.REQUIRED, readOnly=false)
public void save(User user){
template.persist(user);
}
}
And the Spring configuration XML:
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:p="http://www.springframework.org/schema/p"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd">
<context:annotation-config />
<bean id="userTransactionService" class="com.atomikos.icatch.config.UserTransactionServiceImp" init-method="init" destroy-method="shutdownForce">
<constructor-arg>
<props>
<prop key="com.atomikos.icatch.service">com.atomikos.icatch.standalone.UserTransactionServiceFactory</prop>
</props>
</constructor-arg>
</bean>
<bean id="AtomikosTransactionManager" class="com.atomikos.icatch.jta.UserTransactionManager" init-method="init" destroy-method="close" depends-on="userTransactionService">
<!-- When close is called, should we force transactions to terminate or not? -->
<property name="forceShutdown" value="false" />
<!-- IMPORTANT: disable startup because the userTransactionService above does this -->
<property name="startupTransactionService" value="false"/>
</bean>
<bean id="AtomikosUserTransaction" class="com.atomikos.icatch.jta.UserTransactionImp" depends-on="userTransactionService">
<property name="transactionTimeout" value="300" />
</bean>
<!---
Configure the Spring framework to use JTA transactions from Atomikos
-->
<bean id="jtaTransactionManager" class="org.springframework.transaction.jta.JtaTransactionManager" depends-on="userTransactionService">
<property name="transactionManager" ref="AtomikosTransactionManager" />
<property name="userTransaction" ref="AtomikosUserTransaction" />
</bean>
<bean id="mydatasource" class="com.atomikos.jdbc.AtomikosDataSourceBean" init-method="init" destroy-method="close">
<property name="uniqueResourceName" value="XADBMS" />
<property name="xaDataSourceClassName" value="com.mysql.jdbc.jdbc2.optional.MysqlXADataSource" />
<property name="xaProperties">
<props>
<prop key="user">root</prop>
<prop key="password">1234</prop>
<prop key="URL">jdbc:mysql://localhost:3306/test_transactions1</prop>
</props>
</property>
<property name="minPoolSize" value="1" />
<property name="maxPoolSize" value="50" />
</bean>
<bean id="sessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean" >
<property name="configLocation" value="classpath:hibernate.cfg.xml" />
<qualifier value="sessionFactory"/>
<property name="configurationClass" value="org.hibernate.cfg.AnnotationConfiguration" />
<property name="dataSource" ref="mydatasource" />
<property name="hibernateProperties">
<props>
<prop key="hibernate.show_sql" >true</prop>
<prop key="hibernate.formate_sql">true</prop>
<!-- TRANSACTION_READ_UNCOMMITTED 1, TRANSACTION_READ_COMMITTED 2, TRANSACTION_REPEATABLE_READ 4, TRANSACTION_SERIALIZABLE 8 -->
<prop key="hibernate.connection.isolation">4</prop>
<prop key="hibernate.max_fetch_depth">3</prop>
<prop key="hibernate.dialect">org.hibernate.dialect.MySQL5InnoDBDialect</prop>
<prop key="hibernate.transaction.manager_lookup_class">com.atomikos.icatch.jta.hibernate3.TransactionManagerLookup</prop>
<prop key="hibernate.transaction.factory_class">com.atomikos.icatch.jta.hibernate3.AtomikosJTATransactionFactory</prop>
<prop key="hibernate.connection.release_mode">after_transaction</prop>
<prop key="hibernate.current_session_context_class">jta</prop>
<prop key="hibernate.connection.autocommit">true</prop>
<prop key="hibernate.c3p0.preferredTestQuery">SELECT 1</prop>
<prop key="hibernate.bytecode.provider">javassist</prop>
</props>
</property>
</bean>
<bean id="hibernateTemplate" class="org.springframework.orm.hibernate3.HibernateTemplate">
<property name="sessionFactory" ref="sessionFactory" />
</bean>
<tx:annotation-driven transaction-manager="jtaTransactionManager" />
<bean id="appContextHolder" class="com.inneractive.testAtomikos.ApplicationContext" />
<context:component-scan base-package="com.inneractive.testAtomikos"/>
</beans>
The issue is, a java.lang.NullPointerException, the stack trace as follow:
java.lang.NullPointerException
at org.hibernate.jdbc.AbstractBatcher.closePreparedStatement(AbstractBatcher.java:563)
at org.hibernate.jdbc.AbstractBatcher.closeStatement(AbstractBatcher.java:291)
at org.hibernate.id.insert.AbstractReturningDelegate.releaseStatement(AbstractReturningDelegate.java:82)
at org.hibernate.id.insert.AbstractReturningDelegate.performInsert(AbstractReturningDelegate.java:60)
at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:2329)
at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:2836)
at org.hibernate.action.EntityIdentityInsertAction.execute(EntityIdentityInsertAction.java:71)
at org.hibernate.engine.ActionQueue.execute(ActionQueue.java:268)
at org.hibernate.event.def.AbstractSaveEventListener.performSaveOrReplicate(AbstractSaveEventListener.java:321)
at org.hibernate.event.def.AbstractSaveEventListener.performSave(AbstractSaveEventListener.java:204)
at org.hibernate.event.def.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:130)
at org.hibernate.event.def.DefaultPersistEventListener.entityIsTransient(DefaultPersistEventListener.java:179)
at org.hibernate.event.def.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:135)
at org.hibernate.event.def.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:61)
at org.hibernate.impl.SessionImpl.firePersist(SessionImpl.java:800)
at org.hibernate.impl.SessionImpl.persist(SessionImpl.java:774)
at org.hibernate.impl.SessionImpl.persist(SessionImpl.java:778)
at org.springframework.orm.hibernate3.HibernateTemplate$21.doInHibernate(HibernateTemplate.java:796)
at org.springframework.orm.hibernate3.HibernateTemplate.doExecute(HibernateTemplate.java:406)
at org.springframework.orm.hibernate3.HibernateTemplate.executeWithNativeSession(HibernateTemplate.java:374)
at org.springframework.orm.hibernate3.HibernateTemplate.persist(HibernateTemplate.java:793)
at com.inneractive.testAtomikos.UsersDAO.save(UsersDAO.java:23)
at com.inneractive.testAtomikos.UsersDAO$$FastClassByCGLIB$$f1776210.invoke(<generated>)
at net.sf.cglib.proxy.MethodProxy.invoke(MethodProxy.java:191)
at org.springframework.aop.framework.Cglib2AopProxy$CglibMethodInvocation.invokeJoinpoint(Cglib2AopProxy.java:688)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150)
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:110)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
at org.springframework.aop.framework.Cglib2AopProxy$DynamicAdvisedInterceptor.intercept(Cglib2AopProxy.java:621)
at com.inneractive.testAtomikos.UsersDAO$$EnhancerByCGLIB$$822a0c8c.save(<generated>)
at com.inneractive.testAtomikos.TestAtomikos.testHibernateConfigured(TestAtomikos.java:34)
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:597)
at org.testng.internal.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:81)
at org.testng.internal.MethodInvocationHelper$1.runTestMethod(MethodInvocationHelper.java:177)
at org.springframework.test.context.testng.AbstractTestNGSpringContextTests.run(AbstractTestNGSpringContextTests.java:158)
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:597)
at org.testng.internal.MethodInvocationHelper.invokeHookable(MethodInvocationHelper.java:189)
at org.testng.internal.Invoker.invokeMethod(Invoker.java:666)
at org.testng.internal.Invoker.invokeTestMethod(Invoker.java:842)
at org.testng.internal.Invoker.invokeTestMethods(Invoker.java:1166)
at org.testng.internal.TestMethodWorker.invokeTestMethods(TestMethodWorker.java:125)
at org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:109)
at org.testng.TestRunner.runWorkers(TestRunner.java:1172)
at org.testng.TestRunner.privateRun(TestRunner.java:757)
at org.testng.TestRunner.run(TestRunner.java:608)
at org.testng.SuiteRunner.runTest(SuiteRunner.java:334)
at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:329)
at org.testng.SuiteRunner.privateRun(SuiteRunner.java:291)
at org.testng.SuiteRunner.run(SuiteRunner.java:240)
at org.testng.SuiteRunnerWorker.runSuite(SuiteRunnerWorker.java:52)
at org.testng.SuiteRunnerWorker.run(SuiteRunnerWorker.java:86)
at org.testng.TestNG.runSuitesSequentially(TestNG.java:1158)
at org.testng.TestNG.runSuitesLocally(TestNG.java:1083)
at org.testng.TestNG.run(TestNG.java:999)
at org.testng.remote.RemoteTestNG.run(RemoteTestNG.java:111)
at org.testng.remote.RemoteTestNG.initAndRun(RemoteTestNG.java:203)
at org.testng.remote.RemoteTestNG.main(RemoteTestNG.java:174)
Does any one know/familiar with this issue?
Is it a Spring/Hibernate/Atomikos issue?
Mordechai Tamam 
Tuesday, July 05, 2011
Tuesday, July 05, 2011
Looking at the trace the culprit seems to be a hibernate class - guess you should first take a look at the code there.
I am using atomikos with hibernate too and GeneratedValue does work as expected - so i guess its a configuration issue or a hibernate one (versions may be interesting ...).
I am using atomikos with hibernate too and GeneratedValue does work as expected - so i guess its a configuration issue or a hibernate one (versions may be interesting ...).
Torsten Krah 
Saturday, July 09, 2011
Saturday, July 09, 2011
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