customermgmtbean.java

ejb学习资料

package service;


import javax.ejb.Stateless;
import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;

import com.sun.org.apache.commons.logging.Log;

import entity.Customer;

@Stateless(name="CustomerMgmtBean3")
public class CustomerMgmtBean implements CustomerMgmtBeanRemote {
	@PersistenceContext
	private EntityManager em;
	public Customer find(String name) {
		// TODO Auto-generated method stub
		return (Customer) em.createQuery("from Customer c where c.name=:name")
		.setParameter("name", name).getSingleResult();
		
	}

	public void save(Customer c) {
		// TODO Auto-generated method stub
		em.persist(c);
	}

}