net.neurowork.cenatic.centraldir.dao.impl.HibernateUserDaoImpl.java Source code

Introduction

Here is the source code for net.neurowork.cenatic.centraldir.dao.impl.HibernateUserDaoImpl.java

Source

/*
 * Copyright 2010 CENATIC
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package net.neurowork.cenatic.centraldir.dao.impl;

import java.util.Collection;
import java.util.List;

import net.neurowork.cenatic.centraldir.dao.DaoException;
import net.neurowork.cenatic.centraldir.dao.UserDao;
import net.neurowork.cenatic.centraldir.model.User;

import org.hibernate.ObjectNotFoundException;
import org.hibernate.criterion.DetachedCriteria;
import org.hibernate.criterion.Order;
import org.hibernate.criterion.Restrictions;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.dao.DataAccessException;
import org.springframework.orm.hibernate3.support.HibernateDaoSupport;

/**
 *
 * @author Alejandro Sanchez Acosta <asanchez@neurowork.net> http://www.neurowork.net
 * @since 10/11/2010
 */
public class HibernateUserDaoImpl extends HibernateDaoSupport implements UserDao {
    private final static Logger logger = LoggerFactory.getLogger(HibernateUserDaoImpl.class);

    public User loadUser(String username) throws DaoException {
        if (logger.isTraceEnabled())
            logger.trace("Hibernate Loading User:" + username);
        try {
            return getHibernateTemplate().load(User.class, username);
        } catch (ObjectNotFoundException e) {
            return null;
        } catch (DataAccessException e) {
            throw new DaoException(e.getMessage());
        }
    }

    public void saveUser(User user) throws DaoException {
        if (logger.isTraceEnabled())
            logger.trace("Hibernate Saving User:" + user);
        getHibernateTemplate().saveOrUpdate(user);
    }

    @SuppressWarnings("unchecked")
    public Collection<User> findUsers(String username) throws DaoException {
        if (logger.isTraceEnabled())
            logger.trace("Hibernate Searching Users with username:" + username);
        DetachedCriteria criteria = DetachedCriteria.forClass(User.class);
        criteria.add(Restrictions.like("username", "%" + username + "%"));
        criteria.addOrder(Order.asc("username"));
        return (List<User>) getHibernateTemplate().findByCriteria(criteria);
    }

    @Override
    public Collection<User> getUsers() throws DaoException {
        if (logger.isTraceEnabled())
            logger.trace("Hibernate Retrieving all Users.");
        Collection<User> ret = null;
        ret = getHibernateTemplate().loadAll(User.class);
        if (logger.isTraceEnabled())
            logger.trace((ret == null) ? "No Users Found." : ret.size() + " Users Found");
        return ret;
    }

}