com.mysql.cj.mysqla.MysqlaConstants Maven / Gradle / Ivy

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JDBC Type 4 driver for MySQL
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/*
 * Copyright (c) 2015, 2017, Oracle and/or its affiliates. All rights reserved.
 *
 * This program is free software; you can redistribute it and/or modify it under
 * the terms of the GNU General Public License, version 2.0, as published by the
 * Free Software Foundation.
 *
 * This program is also distributed with certain software (including but not
 * limited to OpenSSL) that is licensed under separate terms, as designated in a
 * particular file or component or in included license documentation. The
 * authors of MySQL hereby grant you an additional permission to link the
 * program and your derivative works with the separately licensed software that
 * they have included with MySQL.
 *
 * Without limiting anything contained in the foregoing, this file, which is
 * part of MySQL Connector/J, is also subject to the Universal FOSS Exception,
 * version 1.0, a copy of which can be found at
 * http://oss.oracle.com/licenses/universal-foss-exception.
 *
 * 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 General Public License, version 2.0,
 * for more details.
 *
 * You should have received a copy of the GNU General Public License along with
 * this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301  USA
 */

package com.mysql.cj.mysqla;

/**
 * Constants specific to legacy MySQL protocol
 *
 */
public class MysqlaConstants {

    /** Maximum size of MySQL packet payload. */
    public static final int MAX_PACKET_SIZE = 256 * 256 * 256 - 1;
    /** Size of MySQL packet header (payload size + packet sequence ID). */
    public static final int HEADER_LENGTH = 4;
    public static final int SEED_LENGTH = 20;

    /* Type ids of response packets. */
    public static final short TYPE_ID_ERROR = 0xFF;
    public static final short TYPE_ID_EOF = 0xFE;
    public static final short TYPE_ID_LOCAL_INFILE = 0xFB;
    public static final short TYPE_ID_OK = 0;

    /* MySQL binary protocol value lengths. */
    public static final int BIN_LEN_INT1 = 1;
    public static final int BIN_LEN_INT2 = 2;
    public static final int BIN_LEN_INT4 = 4;
    public static final int BIN_LEN_INT8 = 8;
    public static final int BIN_LEN_FLOAT = 4;
    public static final int BIN_LEN_DOUBLE = 8;
    public static final int BIN_LEN_DATE = 4;
    public static final int BIN_LEN_TIMESTAMP = 11;
    public static final int BIN_LEN_TIMESTAMP_NO_US = 7;
    public static final int BIN_LEN_TIME = 8;
    public static final int BIN_LEN_TIME_NO_US = 12;

    /*
     * Command signatures
     */
    public static final int COM_SLEEP = 0;
    public static final int COM_QUIT = 1;
    public static final int COM_INIT_DB = 2;
    public static final int COM_QUERY = 3;
    public static final int COM_FIELD_LIST = 4; // Not used; deprecated in MySQL 5.7.11 and MySQL 8.0.0.
    public static final int COM_CREATE_DB = 5; // Not used; deprecated?
    public static final int COM_DROP_DB = 6; // Not used; deprecated?
    public static final int COM_REFRESH = 7; // Not used; deprecated in MySQL 5.7.11 and MySQL 8.0.0.
    public static final int COM_SHUTDOWN = 8; // Deprecated in MySQL 5.7.9 and MySQL 8.0.0.
    public static final int COM_STATISTICS = 9;
    public static final int COM_PROCESS_INFO = 10; // Not used; deprecated in MySQL 5.7.11 and MySQL 8.0.0.
    public static final int COM_CONNECT = 11;
    public static final int COM_PROCESS_KILL = 12; // Not used; deprecated in MySQL 5.7.11 and MySQL 8.0.0.
    public static final int COM_DEBUG = 13;
    public static final int COM_PING = 14;
    public static final int COM_TIME = 15;
    public static final int COM_DELAYED_INSERT = 16;
    public static final int COM_CHANGE_USER = 17;
    public static final int COM_BINLOG_DUMP = 18;
    public static final int COM_TABLE_DUMP = 19;
    public static final int COM_CONNECT_OUT = 20;
    public static final int COM_REGISTER_SLAVE = 21;
    public static final int COM_STMT_PREPARE = 22;
    public static final int COM_STMT_EXECUTE = 23;
    public static final int COM_STMT_SEND_LONG_DATA = 24;
    public static final int COM_STMT_CLOSE = 25;
    public static final int COM_STMT_RESET = 26;
    public static final int COM_SET_OPTION = 27;
    public static final int COM_STMT_FETCH = 28;
    public static final int COM_DAEMON = 29;
    public static final int COM_BINLOG_DUMP_GTID = 30;
    public static final int COM_RESET_CONNECTION = 31;

    // TODO: convert this to an enum for easier debugging and stuff
    // Data Types
    public static final int FIELD_TYPE_DECIMAL = 0;
    public static final int FIELD_TYPE_TINY = 1;
    public static final int FIELD_TYPE_SHORT = 2;
    public static final int FIELD_TYPE_LONG = 3;
    public static final int FIELD_TYPE_FLOAT = 4;
    public static final int FIELD_TYPE_DOUBLE = 5;
    public static final int FIELD_TYPE_NULL = 6;
    public static final int FIELD_TYPE_TIMESTAMP = 7;
    public static final int FIELD_TYPE_LONGLONG = 8;
    public static final int FIELD_TYPE_INT24 = 9;
    public static final int FIELD_TYPE_DATE = 10;
    public static final int FIELD_TYPE_TIME = 11;
    public static final int FIELD_TYPE_DATETIME = 12;
    public static final int FIELD_TYPE_YEAR = 13;
    public static final int FIELD_TYPE_VARCHAR = 15;
    public static final int FIELD_TYPE_BIT = 16;
    public static final int FIELD_TYPE_JSON = 245;
    public static final int FIELD_TYPE_NEWDECIMAL = 246;
    public static final int FIELD_TYPE_ENUM = 247;
    public static final int FIELD_TYPE_SET = 248;
    public static final int FIELD_TYPE_TINY_BLOB = 249;
    public static final int FIELD_TYPE_MEDIUM_BLOB = 250;
    public static final int FIELD_TYPE_LONG_BLOB = 251;
    public static final int FIELD_TYPE_BLOB = 252;
    public static final int FIELD_TYPE_VAR_STRING = 253;
    public static final int FIELD_TYPE_STRING = 254;
    public static final int FIELD_TYPE_GEOMETRY = 255;

    /**
     * Used to indicate that the server sent no field-level character set information, so the driver should use the connection-level character encoding instead.
     */
    public static final int NO_CHARSET_INFO = -1;

    public MysqlaConstants() {
        super();
    }
}