py.una.pol.karaku.replication.server.DummyFirstChangeProvider.java Source code

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Here is the source code for py.una.pol.karaku.replication.server.DummyFirstChangeProvider.java

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/*-
 * Copyright (c)
 *
 *       2012-2014, Facultad Politcnica, Universidad Nacional de Asuncin.
 *       2012-2014, Facultad de Ciencias Mdicas, Universidad Nacional de Asuncin.
 *       2012-2013, Centro Nacional de Computacin, Universidad Nacional de Asuncin.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
 * MA 02110-1301  USA
 */
package py.una.pol.karaku.replication.server;

import java.util.ArrayList;
import java.util.List;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.criterion.Order;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import py.una.pol.karaku.replication.Shareable;

/**
 * 
 * @author Arturo Volpe
 * @since 2.2.8
 * @version 1.0 Dec 4, 2013
 * 
 */
@Component
public class DummyFirstChangeProvider implements FirstChangeProvider<Shareable> {

    @Autowired
    private SessionFactory factory;

    @SuppressWarnings("unchecked")
    private <T extends Shareable> List<T> getAll(Class<T> clazz) {

        List<T> entities = getSession().createCriteria(clazz).addOrder(Order.asc("id")).list();
        List<T> toRet = new ArrayList<T>(entities.size());
        for (T entitie : entities) {
            toRet.add(entitie);
        }
        return toRet;

    }

    protected Session getSession() {

        return factory.getCurrentSession();
    }

    @SuppressWarnings("unchecked")
    @Override
    public List<Shareable> getChanges(Class<? extends Shareable> clazz) {

        return (List<Shareable>) getAll(clazz);
    }

    @Override
    public Class<Shareable> getSupportedClass() {

        return Shareable.class;
    }

    @Override
    public Integer getPriority() {

        return Integer.MIN_VALUE;
    }

}