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| Current File : /home/livedhms/lmgt/node_modules/mysql2/lib/packets/prepare_statement.js |
'use strict';
const Packet = require('../packets/packet');
const CommandCodes = require('../constants/commands');
const StringParser = require('../parsers/string.js');
const CharsetToEncoding = require('../constants/charset_encodings.js');
class PrepareStatement {
constructor(sql, charsetNumber) {
this.query = sql;
this.charsetNumber = charsetNumber;
this.encoding = CharsetToEncoding[charsetNumber];
}
toPacket() {
const buf = StringParser.encode(this.query, this.encoding);
const length = 5 + buf.length;
const buffer = Buffer.allocUnsafe(length);
const packet = new Packet(0, buffer, 0, length);
packet.offset = 4;
packet.writeInt8(CommandCodes.STMT_PREPARE);
packet.writeBuffer(buf);
return packet;
}
}
module.exports = PrepareStatement;