public class NoHibernateValidationEventListener extends ValidateEventListener {
    static final long serialVersionUID = 0L;

    private static ThreadLocal<Boolean> shouldValidateThreadLocal = new ThreadLocal<Boolean>() {
        @Override
        protected Boolean initialValue() {
            return Boolean.FALSE;
        }
    };
   
    /**
     * Constructor.
     */
    public NoHibernateValidationEventListener() {
        // do nothing
        super();
    }

    /**
     * Perform validation before insert, <code>unless</code> {@link #turnValidationOff()} has been called for the
     * currently executing thread.
     *
     * @param event the PreInsertEvent
     * @return Return true if the operation should be vetoed
     */
    @Override
    public boolean onPreInsert(final PreInsertEvent event) {
        return isCurrentlyValidating() && super.onPreInsert(event);
    }

    /**
     * Perform validation before update, <code>unless</code> {@link #turnValidationOff()} has been called for the
     * currently executing thread.
     *
     * @param event the PreUpdateEvent
     * @return Return true if the operation should be vetoed
     */
    @Override
    public boolean onPreUpdate(final PreUpdateEvent event) {
        return isCurrentlyValidating() && super.onPreUpdate(event);
    }

    /** Call this method to explicitly turn validation on for the currently executing thread. */
    public static void turnValidationOn() {
        NoHibernateValidationEventListener.shouldValidateThreadLocal.set(Boolean.TRUE);
    }

    /** Call this method to bypass validation for the currently executing thread. */
    public static void turnValidationOff() {
        NoHibernateValidationEventListener.shouldValidateThreadLocal.set(Boolean.FALSE);
    }

    /** @return <code>true</code> if we need to validate for the current thread */
    public static Boolean isCurrentlyValidating() {
        return NoHibernateValidationEventListener.shouldValidateThreadLocal.get();
    }


}

...
...

<bean id="hibernatePropertiesHxtt" class="org.springframework.beans.factory.config.PropertiesFactoryBean">
      <property name="properties">
         <props>
            <prop key="hibernate.dialect">com.hxtt.support.hibernate.HxttTextDialect</prop>
            <prop key="hibernate.show_sql">false</prop>
            <prop key="hibernate.c3p0.minPoolSize">1</prop>
            <prop key="hibernate.c3p0.maxPoolSize">50</prop>
            <prop key="hibernate.c3p0.timeout">600</prop>
            <prop key="hibernate.c3p0.testConnectionOnCheckout">false</prop>
            <prop key="hibernate.current_session_context_class">org.hibernate.context.ManagedSessionContext</prop>
            <prop key="hibernate.generate_statistics">false</prop>
            <!-- used to bypass select queries befor insert;
                Used in conjunction with NoHibernateValidationEventListener class (bean sessionFactoryHxtt)  -->
            <prop key="hibernate.validator.autoregister_listeners">false</prop>
            
         </props>
      </property>
   </bean>
...
...
<bean id="sessionFactoryHxtt" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
      <property name="dataSource" ref="dataSourceHxtt" />
      <property name="mappingResources" ref="mappingResourcesHxtt" />
      <property name="hibernateProperties" ref="hibernatePropertiesHxtt" />

      <!-- No Hibernate operation will be validated -->
       <property name="eventListeners">
         <map>
           <entry key="pre-update">
             <bean class="com.biblio.NoHibernateValidationEventListener"/>
           </entry>
           <entry key="pre-insert">
             <bean class="com.biblio.NoHibernateValidationEventListener"/>
           </entry>
         </map>
       </property>
   </bean>
...
...