LazyInitializationException in Thread with Spring Roo 1.5 - multithreading

Question

I have a project with Spring Roo 1.5 (mysql w/ hibernate), I made a Thread class (extends from Thread) because I need call to async operations. But when I tried to get this, for example a property from persitence class occurs a exception. This only occurs when I call from Thread class...
My entity class:
#RooJavaBean
#RooToString
#RooEntity
public class Consulta {
private String nombre;
#OneToMany(cascade=CascadeType.ALL)
private List<DetalleConsulta> detalleConsulta;
}
My thread:
public class ThreadIngresarConsulta extends Thread {
private Long idConsulta;
public ThreadIngresarConsultaCRM(Long idConsulta) {
super("ThreadIngresarConsultaCRM");
this.idConsulta = idConsulta;
}
public void run(){
try {
Consulta consulta = Consulta.findConsulta(idConsulta);
List<DetalleConsulta> lista = consulta.getDetalleConsulta();
}catch(Exception e) {
System.err.println(e.getMessage());
}
}
}
ApplicactionContext (generated by roo)
...
<bean class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close" id="dataSource">
<property name="driverClassName" value="${database.driverClassName}"/>
<property name="url" value="${database.url}"/>
<property name="username" value="${database.username}"/>
<property name="password" value="${database.password}"/>
<property name="validationQuery" value="SELECT 1"/>
</bean>
<bean class="org.springframework.orm.jpa.JpaTransactionManager" id="transactionManager">
<property name="entityManagerFactory" ref="entityManagerFactory"/>
</bean>
<tx:annotation-driven mode="aspectj" transaction-manager="transactionManager"/>
<bean class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean" id="entityManagerFactory">
<property name="persistenceUnitName" value="persistenceUnit"/>
<property name="dataSource" ref="dataSource"/>
</bean>
And this is the exception:
011-12-05 18:49:10,015 [ThreadIngresarConsulta] ERROR org.hibernate.LazyInitializationException - failed to lazily initialize a collection of role: com.core.Consulta.detalleConsulta, no session or session was closed
org.hibernate.LazyInitializationException: failed to lazily initialize a collection of role: com.core.Consulta.detalleConsulta, no session or session was closed
Has anyone tried to call an entity JPA within a thread?

Answer 1

Try putting an #Transactional annotation on the run method of your thread. If that doesn't work move the two lines into a separate method and add #Transactional on that method.
public class ThreadIngresarConsulta extends Thread {
public void run(){
doProcess();
}
#Transactional
public void doProcess() {
try {
Consulta consulta = Consulta.findConsulta(idConsulta);
List<DetalleConsulta> lista = consulta.getDetalleConsulta();
}catch(Exception e) {
System.err.println(e.getMessage());
}
}
}