/**
 * 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.pricing;

import java.util.Collection;

import javax.persistence.EntityManager;

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

import com.abiquo.server.core.common.persistence.DefaultDAOBase;
import com.abiquo.server.core.infrastructure.storage.Tier;

@Repository("jpaPricingTierDAO")
public class PricingTierDAO extends DefaultDAOBase<Integer, PricingTier>
{
    public PricingTierDAO()
    {
        super(PricingTier.class);
    }

    public PricingTierDAO(final EntityManager entityManager)
    {
        super(PricingTier.class, entityManager);
    }

    public Collection<PricingTier> findPricingTiers(final PricingTemplate pricing)
    {
        Criteria criteria = createCriteria(samePricing(pricing));

        return criteria.list();
    }

    public Collection<PricingTier> findPricingTiers(final Tier tier)
    {
        Criteria criteria = createCriteria(sameTier(tier));

        return criteria.list();
    }

    public PricingTier findPricingTier(final Tier tier, final PricingTemplate pricing)
    {
        return (PricingTier) createCriteria(sameTier(tier), samePricing(pricing)).uniqueResult();
    }

    private Criterion sameTier(final Tier tier)
    {
        return Restrictions.eq(PricingTier.TIER_PROPERTY, tier);
    }

    private Criterion samePricing(final PricingTemplate pricing)
    {
        return Restrictions.eq(PricingTier.PRICING_TEMPLATE_PROPERTY, pricing);
    }

    public boolean existAnyOtherWithTier(final PricingTier pt1, final Tier tier,
        final PricingTemplate pricingTemplate)
    {
        return existsAnyOtherByCriterions(pt1, sameTier(tier), samePricing(pricingTemplate));
    }

}