/**
 * Abiquo community edition
 * cloud management application for hybrid clouds
 * Copyright (C) 2008-2010 - Abiquo Holdings S.L.
 *
 * This application 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 under
 * version 3 of the License
 *
 * This software 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 v.3 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., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 */

package com.abiquo.server.core.cloud.chef;

import java.util.List;

import javax.persistence.EntityManager;
import javax.persistence.Query;

import org.hibernate.Criteria;
import org.hibernate.criterion.Criterion;
import org.hibernate.criterion.Order;
import org.hibernate.criterion.Restrictions;
import org.springframework.stereotype.Repository;

import com.abiquo.server.core.cloud.VirtualMachine;
import com.abiquo.server.core.common.persistence.DefaultDAOBase;

@Repository("jpaRunlistElementDAO")
public class RunlistElementDAO extends DefaultDAOBase<Integer, RunlistElement>
{
    public RunlistElementDAO()
    {
        super(RunlistElement.class);
    }

    public RunlistElementDAO(final EntityManager entityManager)
    {
        super(RunlistElement.class, entityManager);
    }

    public List<RunlistElement> findByVirtualMachine(final VirtualMachine virtualmachine)
    {
        Criteria criteria = createCriteria(sameVirtualMachine(virtualmachine));
        criteria.addOrder(Order.asc(RunlistElement.PRIORITY_PROPERTY));
        return getResultList(criteria);
    }

    public void clearVirtualMachineRunlist(final VirtualMachine virtualmachine)
    {
        Query query =
            getEntityManager().createQuery(
                "delete from " + getPersistentClass().getName()
                    + " where virtualMachine = :virtualMachine");

        query.setParameter("virtualMachine", virtualmachine);
        query.executeUpdate();
    }

    private static Criterion sameVirtualMachine(final VirtualMachine virtualmachine)
    {
        return Restrictions.eq(RunlistElement.VIRTUALMACHINE_PROPERTY, virtualmachine);
    }
}