/*
 * This file is part of LibrePlan
 *
 * Copyright (C) 2009-2010 Fundación para o Fomento da Calidade Industrial e
 *                         Desenvolvemento Tecnolóxico de Galicia
 * Copyright (C) 2010-2011 Igalia, S.L.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero 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 Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

package org.libreplan.business.workingday.hibernate;

import java.io.Serializable;
import java.math.BigDecimal;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Types;

import org.hibernate.HibernateException;
import org.hibernate.engine.spi.SessionImplementor;
import org.hibernate.type.StandardBasicTypes;
import org.hibernate.usertype.UserType;
import org.libreplan.business.workingday.ResourcesPerDay;

/**
 * Persists a {@link ResourcesPerDay} through hibernate
 * @author Óscar González Fernández <ogonzalez@igalia.com>
 */
public class ResourcesPerDayType implements UserType {

    private static final int[] SQL_TYPES = { Types.NUMERIC };

    @Override
    public int[] sqlTypes() {
        return SQL_TYPES;
    }

    @Override
    public Object assemble(Serializable cached, Object owner)
            throws HibernateException {
        return ResourcesPerDay.amount((BigDecimal) cached);
    }

    @Override
    public Serializable disassemble(Object value) throws HibernateException {
        ResourcesPerDay resourcesPerDay = (ResourcesPerDay) value;
        return resourcesPerDay.getAmount();
    }

    @Override
    public Object deepCopy(Object value) throws HibernateException {
        return value;
    }

    @Override
    public boolean equals(Object x, Object y) throws HibernateException {
        if (x == y) {
            return true;
        }
        if (x == null || y == null) {
            return false;
        }
        return x.equals(y);
    }

    @Override
    public int hashCode(Object x) throws HibernateException {
        return x.hashCode();
    }

    @Override
    public boolean isMutable() {
        return false;
    }

    @Override
    public Object nullSafeGet(ResultSet rs, String[] names,
            SessionImplementor session, Object owner)
            throws HibernateException, SQLException {
        BigDecimal bigDecimal = (BigDecimal) StandardBasicTypes.BIG_DECIMAL
                .nullSafeGet(rs, names[0], session);
        if (bigDecimal == null) {
            return null;
        }
        return ResourcesPerDay.amount(bigDecimal);
    }

    @Override
    public void nullSafeSet(PreparedStatement st, Object value, int index,
            SessionImplementor session) throws HibernateException, SQLException {
        BigDecimal amount = null;
        if (value != null) {
            amount = ((ResourcesPerDay) value).getAmount();
        }
        StandardBasicTypes.BIG_DECIMAL.nullSafeSet(st, amount, index, session);

    }

    @Override
    public Object replace(Object original, Object target, Object owner)
            throws HibernateException {
        return original;
    }

    @Override
    public Class<ResourcesPerDay> returnedClass() {
        return ResourcesPerDay.class;
    }

}