io.questdb.griffin.engine.functions.constants.LongConstant Maven / Gradle / Ivy

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 *  Copyright (c) 2014-2019 Appsicle
 *  Copyright (c) 2019-2022 QuestDB
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 *  http://www.apache.org/licenses/LICENSE-2.0
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package io.questdb.griffin.engine.functions.constants;

import io.questdb.cairo.sql.Record;
import io.questdb.griffin.engine.functions.LongFunction;
import io.questdb.std.Numbers;

public class LongConstant extends LongFunction implements ConstantFunction {
    public final static LongConstant NULL = new LongConstant(Numbers.LONG_NaN);
    public final static LongConstant ZERO = new LongConstant(0);
    private final long value;

    public LongConstant(long value) {
        this.value = value;
    }

    public static LongConstant newInstance(long value) {
        if (value == 0) {
            return LongConstant.ZERO;
        }

        if (value != Numbers.LONG_NaN) {
            return new LongConstant(value);
        }

        return LongConstant.NULL;
    }

    @Override
    public long getLong(Record rec) {
        return value;
    }
}