package cn.itcast.service.impl;

import java.util.List;

import javax.annotation.Resource;

import org.hibernate.SessionFactory;
import org.springframework.transaction.annotation.Propagation;
import org.springframework.transaction.annotation.Transactional;

import cn.itcast.bean.Person;
import cn.itcast.service.PersonService;


@Transactional
public class PersonServiceBean implements PersonService {
    //按名稱來找
	@Resource private SessionFactory sessionFactory;
	
    public void save(Person person){
    	sessionFactory.getCurrentSession().persist(person);
       }
    //person為游離狀態。
    public void update(Person person){
    	sessionFactory.getCurrentSession().merge(person); 
       }
       
     //按id來得到person
    @Transactional(propagation=Propagation.NOT_SUPPORTED,readOnly=true)
    public Person getPerson(Integer personid){
    	
    	   return (Person)sessionFactory.getCurrentSession().get(Person.class, personid);
       }
       
     //按ID來DELETE DATA
    public void delete(Integer personid){
    	sessionFactory.getCurrentSession().delete(
    			sessionFactory.getCurrentSession().load(Person.class, personid)	 ); 
       }
       
    // get all person
    @Transactional(propagation=Propagation.NOT_SUPPORTED,readOnly=true)
    @SuppressWarnings("unchecked")
    public List<Person> getPersons(){
    	   return sessionFactory.getCurrentSession().createQuery("from Person").list();
       }
}