/*
* Copyright 1999-2012 Alibaba Group.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.alibaba.cobar.jdbc.packet;
import com.alibaba.cobar.jdbc.util.MySQLMessage;
/**
* From server to client in response to command, if error.
*
* <pre>
* Bytes Name
* ----- ----
* 1 field_count, always = 0xff
* 2 errno
* 1 (sqlstate marker), always '#'
* 5 sqlstate (5 characters)
* n message
*
* @see http://forge.mysql.com/wiki/MySQL_Internals_ClientServer_Protocol#Error_Packet
* </pre>
*
* @author xianmao.hexm 2010-7-16 上午10:45:01
*/
public class ErrorPacket extends MySQLPacket {
public static final byte FIELD_COUNT = (byte) 0xff;
private static final byte SQLSTATE_MARKER = (byte) '#';
private static final byte[] DEFAULT_SQLSTATE = "HY000".getBytes();
public byte fieldCount = FIELD_COUNT;
public int errno;
public byte mark = SQLSTATE_MARKER;
public byte[] sqlState = DEFAULT_SQLSTATE;
public byte[] message;
public void read(BinaryPacket data) {
packetLength = data.packetLength;
packetId = data.packetId;
MySQLMessage mm = new MySQLMessage(data.value);
fieldCount = mm.read();
errno = mm.readUB2();
if (mm.hasRemaining() && (mm.read(mm.position()) == SQLSTATE_MARKER)) {
mm.read();
sqlState = mm.readBytes(5);
}
message = mm.readBytes();
}
@Override
protected String packetInfo() {
return "MySQL Error Packet";
}
}