br.com.machina.verbum.dao.hibernate.BlogDAOImpl.java Source code

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Here is the source code for br.com.machina.verbum.dao.hibernate.BlogDAOImpl.java

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// Copyright 2010 Thiago H. de Paula Figueiredo
//
// 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 br.com.machina.verbum.dao.hibernate;

import java.util.List;

import org.hibernate.Criteria;
import org.hibernate.Session;
import org.hibernate.criterion.Restrictions;

import br.com.machina.verbum.dao.BlogDAO;
import br.com.machina.verbum.entities.Blog;
import br.com.machina.verbum.entities.User;

/**
 * {@link BlogDAOImpl} implementation using Hibernate.
 * 
 * @author Thiago H. de Paula Figueiredo
 */
public class BlogDAOImpl implements BlogDAO {

    final private Session session;

    /**
     * Single constructor of this class.
     * 
     * @param session a {@link Session}.
     */
    public BlogDAOImpl(Session session) {
        this.session = session;
    }

    @SuppressWarnings("unchecked")
    public List<Blog> findAll() {

        final Criteria criteria = session.createCriteria(Blog.class);
        return criteria.list();

    }

    public void remove(Blog blog) {
        session.delete(blog);
    }

    public void saveOrUpdate(Blog blog) {
        session.saveOrUpdate(blog);
    }

    @SuppressWarnings("unchecked")
    public List<Blog> findByOwner(User owner) {

        final Criteria criteria = session.createCriteria(Blog.class);
        criteria.add(Restrictions.eq("owner", owner));

        return criteria.list();

    }

    public Blog findByStringId(String stringId) {

        final Criteria criteria = session.createCriteria(Blog.class);
        criteria.add(Restrictions.eq("stringId", stringId));

        return (Blog) criteria.uniqueResult();

    }

}