/*
 * Copyright 2013-2014 eBay Software Foundation
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.kylinolap.query.sqlfunc;

import net.hydromatic.optiq.runtime.SqlFunctions;
import net.hydromatic.optiq.runtime.SqlFunctions.TimeUnitRange;

import java.sql.Date;

/**
 * @author xjiang
 */
public class QuarterFunc {
    private QuarterFunc() {
    }

    public static long eval(Date date) {
        throw new UnsupportedOperationException();
    }

    public static long eval(long date) {
        long month = SqlFunctions.unixDateExtract(TimeUnitRange.MONTH, date);
        return month / 4 + 1;
    }
}