LazyInitializationException in Thread

[titobundy]

Hi,


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...

I use Roo 1.5.

My class is:

@RooJavaBean
@RooToString
@RooEntity
public class Consulta {
    @OneToMany(cascade=CascadeType.ALL)
    private List<DetalleConsulta> detalleConsulta;
}

/**
 * @author HDiaz
 *
 */
public class ThreadIngresarConsulta extends Thread {
    
    private Long idConsulta;
    
    public ThreadIngresarConsultaCRM(Long idConsulta) {
        super("ThreadIngresarConsultaCRM");
        this.idConsulta = idConsulta;
    }


    public void run(){
        try {
            ThreadIngresarConsultaCRM.sleep(5000);
            Consulta consulta = Consulta.findConsulta(idConsulta);
            List<DetalleConsulta> lista = consulta.getDetalleConsulta();



        }catch(Exception e) {
            System.err.println(e.getMessage());
        }        
    }
}

And exception is:

2011-12-05 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

[titobundy]

I think the problem is that my main thread finishes before the ThreadIngresarConsulta.

Any idea?

[titobundy]

Has anyone tried to call an entity JPA within a thread?

[titobundy]

Thanks to gkamalless from stackoverflow for his quickly help

Solution:

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());
}
}
}

http://stackoverflow.com/questions/8...spring-roo-1-5