/*
* Copyright 2008-2108 amoeba.meidusa.com
*
* This program is free software; you can redistribute it and/or modify it under the terms of
* the GNU AFFERO GENERAL PUBLIC LICENSE as published by the Free Software Foundation; either version 3 of the License,
* or (at your option) any later version.
*
* 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, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
package com.meidusa.amoeba.mysql.handler;
import org.apache.log4j.Logger;
import com.meidusa.amoeba.mysql.handler.session.ConnectionStatuts;
import com.meidusa.amoeba.mysql.handler.session.SessionStatus;
import com.meidusa.amoeba.mysql.net.MysqlClientConnection;
import com.meidusa.amoeba.mysql.net.packet.MysqlPacketBuffer;
import com.meidusa.amoeba.mysql.net.packet.QueryCommandPacket;
import com.meidusa.amoeba.net.Connection;
import com.meidusa.amoeba.net.poolable.ObjectPool;
import com.meidusa.amoeba.parser.statement.Statement;
/**
* Command Query ��������Ϣ����
*
* @author <a href=mailto:piratebase@sina.com>Struct chen</a>
*/
public class QueryCommandMessageHandler extends CommandMessageHandler {
public static Logger logger = Logger.getLogger(QueryCommandMessageHandler.class);
static class QueryConnectionStatus extends ConnectionStatuts {
public QueryConnectionStatus(Connection conn){
super(conn);
}
/**
* <pre>
* Command Query:���ֽ���mysql Query������
* 1��select ��䣬�ڶ���EofPacket����
* 2������server�˷��صĴ����ʱ��
* 3����OK������
* </pre>
*/
@Override
public boolean isCompleted(byte[] buffer) {
if (this.commandType == QueryCommandPacket.COM_QUERY) {
boolean isCompleted = false;
if (packetIndex == 0){
if(MysqlPacketBuffer.isErrorPacket(buffer)){
statusCode |= SessionStatus.ERROR;
statusCode |= SessionStatus.COMPLETED;
lastStatusCode = SessionStatus.ERROR;
isCompleted = true;
}else if(MysqlPacketBuffer.isOkPacket(buffer)){
statusCode |= SessionStatus.OK;
statusCode |= SessionStatus.COMPLETED;
lastStatusCode = SessionStatus.OK;
isCompleted = true;
}else {
if (statusCode == SessionStatus.QUERY) {
statusCode |= SessionStatus.RESULT_HEAD;
}
}
}else{
if(lastStatusCode == SessionStatus.EOF_FIELDS && MysqlPacketBuffer.isErrorPacket(buffer)){
statusCode |= SessionStatus.ERROR;
statusCode |= SessionStatus.COMPLETED;
lastStatusCode = SessionStatus.ERROR;
isCompleted = true;
}else if((isCall && (lastStatusCode == SessionStatus.EOF_ROWS)) && MysqlPacketBuffer.isOkPacket(buffer)){
statusCode |= SessionStatus.OK;
statusCode |= SessionStatus.COMPLETED;
lastStatusCode = SessionStatus.OK;
isCompleted = true;
}else if (MysqlPacketBuffer.isEofPacket(buffer) ) {
if ((statusCode & SessionStatus.EOF_FIELDS) > 0) {
statusCode |= SessionStatus.EOF_ROWS;
lastStatusCode = SessionStatus.EOF_ROWS;
if(!isCall){
statusCode |= SessionStatus.COMPLETED;
isCompleted = true;
}
} else {
statusCode |= SessionStatus.EOF_FIELDS;
lastStatusCode = SessionStatus.EOF_FIELDS;
isCompleted = false;
}
}
}
/* if ((packetIndex == 0 || lastStatusCode == SessionStatus.EOF_FIELDS) && MysqlPacketBuffer.isErrorPacket(buffer)) {
statusCode |= SessionStatus.ERROR;
statusCode |= SessionStatus.COMPLETED;
lastStatusCode = SessionStatus.ERROR;
isCompleted = true;
} else if ((packetIndex == 0 || (isCall && (lastStatusCode == SessionStatus.EOF_ROWS))) && MysqlPacketBuffer.isOkPacket(buffer)) {
statusCode |= SessionStatus.OK;
statusCode |= SessionStatus.COMPLETED;
lastStatusCode = SessionStatus.OK;
isCompleted = true;
} else if (packetIndex == 0 && MysqlPacketBuffer.isFieldListPacket(buffer)) {
isCall = true;
} else if (MysqlPacketBuffer.isEofPacket(buffer) ) {
if ((statusCode & SessionStatus.EOF_FIELDS) > 0) {
statusCode |= SessionStatus.EOF_ROWS;
lastStatusCode = SessionStatus.EOF_ROWS;
if(!isCall){
statusCode |= SessionStatus.COMPLETED;
isCompleted = true;
}
} else {
statusCode |= SessionStatus.EOF_FIELDS;
lastStatusCode = SessionStatus.EOF_FIELDS;
isCompleted = false;
}
} else {
if (statusCode == SessionStatus.QUERY) {
statusCode |= SessionStatus.RESULT_HEAD;
}
}*/
return isCompleted;
} else {
return super.isCompleted(buffer);
}
}
}
public QueryCommandMessageHandler(MysqlClientConnection source, byte[] query,Statement statment, ObjectPool[] pools, long timeout){
super(source, query,statment, pools, timeout);
}
@Override
protected ConnectionStatuts newConnectionStatuts(Connection conn) {
return new QueryConnectionStatus(conn);
}
}