package com.sample;

import java.io.Serializable;
import java.util.List;

import javax.annotation.Resource;
import javax.ejb.*;
import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;
import javax.persistence.Query;
import javax.transaction.SystemException;
import javax.transaction.UserTransaction;

@Stateless
@javax.ejb.ApplicationException(rollback = true)
@TransactionManagement(TransactionManagementType.BEAN)
@Remote
public class HelloBean implements HelloBeanItf, Serializable {
 

 @Resource
 private UserTransaction utx;
    
 @PersistenceContext(unitName="userDatabase")
 private EntityManager em;

 
 public List<Note> findAll() {
  Query query = em.createQuery("Select h from Note h");
  return (List<Note>) query.getResultList();
 }
 
    /** Insert a new gadget into the catalog */
 @TransactionAttribute(TransactionAttributeType.REQUIRES_NEW)
 public void newNote(Note note1,Note note2) {
        try {
         int dummy = 0;
         utx.begin();
         
         em.persist(note1);
         
         if (dummy == 0)
         throw new EJBException("Simulating an Error");
         
         em.persist(note2);
         utx.commit();
         
         
         
         
        }
        catch (Exception e) {
         try {
    utx.rollback();
   } catch (IllegalStateException e1) {
    // TODO Auto-generated catch block
    e1.printStackTrace();
   } catch (SecurityException e1) {
    // TODO Auto-generated catch block
    e1.printStackTrace();
   } catch (SystemException e1) {
    // TODO Auto-generated catch block
    e1.printStackTrace();
   }
            e.printStackTrace();
        }
    }

}