[Hibernate][proxy] Problème exécution requêtes update et remove

Bonjour à tous.
depuis hier je suis confronté à un probleme mes requetes s'executesnt à l'exxception des requetes d'update et de remove. ca me prend la tete.
Si quelqu'un veut bien m'aider svp. Voici ma configuration:

Code:

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<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans" ...>
	<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource">
		<property name="driverClassName" value="com.mysql.jdbc.Driver" />
		<property name="url" value="jdbc:mysql://localhost:3306/test" />
		<property name="username" value="root" />
		<property name="password" value="" />
	</bean>
 
	<!-- SessionFactory Hibernate Integration -->
	<bean id="sessionFactory"
		class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean">
		<property name="dataSource" ref="dataSource" />
		<property name="annotatedClasses">
			<list>
				<value>com.application.data.supervisionJSF.model.Antenne</value>
				<value>com.application.data.supervisionJSF.model.User</value>
			</list>
		</property>
		<property name="hibernateProperties">
			<props>
				<prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop>
				<prop key="hibernate.show_sql">true</prop>
				<prop key="hibernate.bytecode.use_reflection_optimizer">true</prop>
				<prop key="hibernate.cache.provider_class">org.hibernate.cache.HashtableCacheProvider</prop>
				<prop key="hibernate.sql_comments">true</prop>
				<prop key="hibernate.format_sql">true</prop>
			</props>
		</property>
	</bean>
 
	<!-- Gestion des transactions -->
	<bean id="transactionManager"
		class="org.springframework.orm.hibernate3.HibernateTransactionManager">
		<property name="sessionFactory" ref="sessionFactory" />
	</bean>
	<tx:annotation-driven transaction-manager="transactionManager" />
 
	<!-- proxy for DAO using generic DAO -->
	<bean id="proxyDAO" abstract="true">
		<property name="sessionFactory" ref="sessionFactory" />
	</bean>
	<bean id="AntenneService" class="com.application.data.supervisionJSF.service.impl.AntenneServiceImpl" parent="proxyDAO">
		<constructor-arg value="com.application.data.supervisionJSF.model.Antenne" />
	</bean>
 
 
	<bean id="userService" class="com.application.data.supervisionJSF.service.impl.UserServiceImpl" parent="proxyDAO">
		<constructor-arg value="com.application.data.supervisionJSF.model.User" />
	</bean>
	<!-- Transactional proxy for Services -->
	<bean id="proxyService" abstract="true"
		class="org.springframework.transaction.interceptor.TransactionProxyFactoryBean">
		<property name="transactionManager" ref="transactionManager" />
		<property name="transactionAttributes">
			<props>
				<prop key="find*">PROPAGATION_REQUIRED, readOnly</prop>
				<prop key="get*">PROPAGATION_REQUIRED, readOnly</prop>
				<prop key="*">PROPAGATION_REQUIRED, -java.lang.Exception</prop>
			</props>
		</property>
	</bean>
	<!-- Utilise les annotations dans tous les context -->
	<context:annotation-config />
 
	<!-- Scanne le package des models pour les classes de la BD -->
	<context:component-scan base-package="com.application.data.supervisionJSF" />
</beans>

le model

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@Entity
@Table(name = "antenne", catalog = "test")
public class Antenne implements java.io.Serializable {
	private static final long serialVersionUID = -127279406857241506L;
	private Integer id;
	private String nom;
	public Antenne() {
	}
	public Antenne(String nom) {
		this.nom = nom;
	}
	@Id
	@GeneratedValue(strategy = IDENTITY)
	@Column(name = "id", unique = true, nullable = false)
	public Integer getId() {
		return this.id;
	}
	public void setId(Integer id) {
		this.id = id;
	}
	@Column(name = "nom", nullable = false, length = 20)
	public String getNom() {
		return this.nom;
	}
	public void setNom(String nom) {
		this.nom = nom;
	}
}

l'interface GenericDao

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public interface GenericDao<T, PK extends Serializable> {
	PK save(T newInstance);
	T findById(PK id);
	List<T> findAll();
    void update(T transientObject);
    void remove(T persistentObject);
}

la classe service

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public interface AntenneService extends GenericDao<Antenne, Integer>{
	public List<Antenne> findAllEnabled();
	public List<Antenne> search(String searchString);
}

la classe d'implementation

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@Transactional
@Service("AntenneService")
public class AntenneServiceImpl extends GenericDaoImpl<Antenne, Integer>implements AntenneService,Serializable{
	private static final long serialVersionUID = 6513868518270496030L;
	public AntenneServiceImpl(Class<Antenne> type) {
		super(type);
	}
	public AntenneServiceImpl() {
		super();
	}
	public List<Antenne> findAllEnabled() {
		return null;
	}
	public List<Antenne> search(String searchString) {
		return null;
	}
}

Le probleme c'est qu'il nya pas pas de message d'erreur généré alors je me demande pourquoi toutes les requetes marchent à l'exeption de update et delete
merci