com.socialsite.dao.hibernate.AbstractImageDaoImpl.java Source code

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Here is the source code for com.socialsite.dao.hibernate.AbstractImageDaoImpl.java

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/**
 *     Copyright SocialSite (C) 2009
 *
 *     This program is free software: you can redistribute it and/or modify
 *     it under the terms of the GNU General Public License as published by
 *     the Free Software Foundation, either version 3 of the License, or
 *     (at your option) any later version.
 *
 *     This program is distributed in the hope that it will be useful,
 *     but WITHOUT ANY WARRANTY; without even the implied warranty of
 *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *     GNU General Public License for more details.
 *
 *     You should have received a copy of the GNU General Public License
 *     along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

package com.socialsite.dao.hibernate;

import java.util.Date;

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

import com.socialsite.dao.AbstractImageDao;

/**
 * Abstract DAO implementation for all the Domain class that have images
 * 
 * @author Ananth
 */
public class AbstractImageDaoImpl<T> extends AbstractDaoImpl<T> implements AbstractImageDao<T> {

    /**
     * constructor
     * 
     * @param domainClass
     */
    public AbstractImageDaoImpl(final Class<T> domainClass) {
        super(domainClass);
    }

    /*
     * (non-Javadoc)
     * 
     * @see com.socialsite.dao.AbstractImageDao#getImage(long)
     */
    public byte[] getImage(final long id) {
        final Criteria criteria = getSession().createCriteria(domainClass);
        criteria.add(Restrictions.idEq(id));
        criteria.setProjection(Projections.property("image"));
        return (byte[]) criteria.uniqueResult();
    }

    /*
     * (non-Javadoc)
     * 
     * @see com.socialsite.dao.AbstractImageDao#getLastModifiedTime(long)
     */
    public Date getLastModifiedTime(final long id) {
        final Criteria criteria = getSession().createCriteria(domainClass);
        criteria.add(Restrictions.idEq(id));
        criteria.setProjection(Projections.property("lastModified"));
        return (Date) criteria.uniqueResult();
    }

    /*
     * (non-Javadoc)
     * 
     * @see com.socialsite.dao.AbstractImageDao#getThumb(long)
     */
    public byte[] getThumb(final long id) {
        final Criteria criteria = getSession().createCriteria(domainClass);
        criteria.add(Restrictions.idEq(id));
        criteria.setProjection(Projections.property("thumb"));
        return (byte[]) criteria.uniqueResult();
    }
}