roleservicebean.java

来自「EJB3 Annotation Sample」· Java 代码 · 共 70 行

/*
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 * and open the template in the editor.
 */

package com.s7turn.security.session;

import com.s7turn.security.entity.Role;
import java.sql.Date;
import java.util.Calendar;
import java.util.List;
import javax.ejb.Stateless;
import javax.persistence.EntityManager;
import javax.persistence.NoResultException;
import javax.persistence.PersistenceContext;
import javax.persistence.Query;

/**
 *
 * @author Long
 */
@Stateless
public class RoleServiceBean implements RoleServiceLocal {
    
    @PersistenceContext(unitName="s7turn-pu")
    private EntityManager em;
    
    public void save(Role t) {
        
        t.setLastUpdate(new Date(Calendar.getInstance().getTimeInMillis()));
        
        if( t.getId() == null || new Long(0).equals( t.getId() )  )
        {
            em.persist(t);
        }
        else{
            em.merge(t);
        }        
    }

    public void remove(Role t) {
        em.remove( em.merge(t) );
    }

    public Role findById(Long id) {
        Query q = em.createNamedQuery("Role.findRoleById");
        q.setParameter("id", id);
        try{
            return (Role) q.getSingleResult();
        }catch(NoResultException nre){
            return null;
        }
    }

    public List<Role> getAllItems() {
        Query q = em.createNamedQuery("Role.findAllItems");
        return q.getResultList();
    }
    
    public List getAccountOfRole( Role role )
    {
        Query  q = em.createNamedQuery("AccountRole.findRolesByAccount");
        q.setParameter("role", role );
        return q.getResultList();
    }
    // Add business logic below. (Right-click in editor and choose
    // "EJB Methods > Add Business Method" or "Web Service > Add Operation")
 
}