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 * Copyright (C) 2014-2019 Appsicle
 *
 * This program is free software: you can redistribute it and/or  modify
 * it under the terms of the GNU Affero General Public License, version 3,
 * as published by the Free Software Foundation.
 *
 * 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 .
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package com.questdb.ql.aggregation;

import com.questdb.std.str.CharSink;
import com.questdb.std.time.Dates;

class YearSampler implements TimestampSampler {

    public static final YearSampler INSTANCE = new YearSampler();

    private YearSampler() {
    }

    @Override
    public long resample(long value) {
        int y;
        return Dates.yearMillis(y = Dates.getYear(value), Dates.isLeapYear(y));
    }

    @Override
    public void toSink(CharSink sink) {
        sink.put('{');
        sink.putQuoted("op").put(':').putQuoted("YearSampler");
        sink.put('}');
    }
}