userdaohibernate.java

springlive ch4

package org.appfuse.dao.hibernate;

import java.util.List;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.appfuse.dao.UserDAO;
import org.appfuse.model.User;
import org.springframework.orm.hibernate.support.HibernateDaoSupport;


/**
 * This class interacts with Spring and Hibernate to save and
 * retrieve User objects.
 *
 * @author Matt Raible
 */
public class UserDAOHibernate extends HibernateDaoSupport implements UserDAO {
    private static Log log = LogFactory.getLog(UserDAOHibernate.class);

    public List getUsers() {
        return getHibernateTemplate().find("from User");
    }

    public User getUser(Long id) {
        return (User) getHibernateTemplate().get(User.class, id);
    }

    public void saveUser(User user) {
        getHibernateTemplate().saveOrUpdate(user);

        if (log.isDebugEnabled()) {
            log.debug("userId set to: " + user.getId());
        }
    }

    public void removeUser(Long id) {
        Object user = getHibernateTemplate().load(User.class, id);
        getHibernateTemplate().delete(user);
    }
}