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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 .
 *
 ******************************************************************************/

package com.questdb.cairo;

import com.questdb.std.BinarySequence;
import com.questdb.std.Numbers;

public class NullColumn implements ReadOnlyColumn {

    public static final NullColumn INSTANCE = new NullColumn();

    @Override
    public void close() {
    }

    @Override
    public BinarySequence getBin(long offset) {
        return null;
    }

    @Override
    public long getBinLen(long offset) {
        return TableUtils.NULL_LEN;
    }

    @Override
    public boolean getBool(long offset) {
        return false;
    }

    @Override
    public byte getByte(long offset) {
        return 0;
    }

    @Override
    public double getDouble(long offset) {
        return Double.NaN;
    }

    @Override
    public long getFd() {
        return -1;
    }

    @Override
    public float getFloat(long offset) {
        return Float.NaN;
    }

    @Override
    public int getInt(long offset) {
        return Numbers.INT_NaN;
    }

    @Override
    public long getLong(long offset) {
        return Numbers.LONG_NaN;
    }

    @Override
    public short getShort(long offset) {
        return 0;
    }

    @Override
    public CharSequence getStr(long offset) {
        return null;
    }

    @Override
    public CharSequence getStr2(long offset) {
        return null;
    }

    @Override
    public char getChar(long offset) {
        return 0;
    }

    @Override
    public int getStrLen(long offset) {
        return TableUtils.NULL_LEN;
    }

    @Override
    public void grow(long size) {
    }

    @Override
    public boolean isDeleted() {
        return true;
    }
}