bool Parse_Ok_Content(MySqlStreamReader reader)
{
if (!reader.Ensure(_currentHeader.ContentLength)) //check if length is enough to parse
{
return(_needMoreData = true);
}
if (this._currentMultResultSet != null)
{
//in multiple result set mode ***
//see https://dev.mysql.com/doc/internals/en/multi-resultset.html
//
var okPacket = new OkPacket(_currentHeader, this._isProtocol41);
okPacket.ParsePacketContent(reader);
_parseResult = _currentMultResultSet;
_parsingState = ResultPacketState.ShouldEnd; //*
//
_currentMultResultSet = null; //reset
}
else
{
var okPacket = new OkPacket(_currentHeader, this._isProtocol41);
okPacket.ParsePacketContent(reader);
_parseResult = new MySqlOkResult(okPacket);
_parsingState = ResultPacketState.ShouldEnd; //*
}
return(true);
}
bool Parse_Field_Header(MySqlStreamReader reader)
{
if (!reader.Ensure(PACKET_HEADER_LENGTH + 1)) //check if length is enough to parse
{
return(_needMoreData = true);
}
_currentHeader = reader.ReadPacketHeader();
byte packetType = reader.PeekByte();
switch (packetType)
{
case ERROR_CODE:
_parsingState = ResultPacketState.Error_Content;
break;
case EOF_CODE:
case OK_CODE:
_parsingState = ResultPacketState.Field_EOF;
break;
default:
//next state => field content of this field
_parsingState = ResultPacketState.Field_Content;
break;
}
return(false);
}
bool Parse_Field_Content(MySqlStreamReader reader)
{
if (!reader.Ensure(_currentHeader.ContentLength)) //check if length is enough to parse
{
#if DEBUG
reader.dbugMonitorData1 = true;
#endif
return(_needMoreData = true);
}
var fieldPacket = new FieldPacket(_currentHeader, this._isProtocol41);
fieldPacket.ParsePacketContent(reader);
fieldPacket.FieldIndex = _tableHeader.ColumnCount; //set this before add to field list
_tableHeader.AddField(fieldPacket);
#if DEBUG
//TODO:review here
if (fieldPacket.dbugFailure)
{
throw new NotSupportedException();
}
#endif
//next state => field header of next field
_parsingState = ResultPacketState.Field_Header;
return(false);
}
bool Parse_Field_EOF(MySqlStreamReader reader)
{
if (!reader.Ensure(_currentHeader.ContentLength)) //check if length is enough to parse
{
return(_needMoreData = true);
}
var eofPacket = new EofPacket(_currentHeader, this._isProtocol41);
eofPacket.ParsePacketContent(reader);
_parsingState = ResultPacketState.Row_Header;
return(false);
}
bool Parse_Error_Content(MySqlStreamReader reader)
{
if (!reader.Ensure(_currentHeader.ContentLength)) //check if length is enough to parse
{
return(_needMoreData = true);
}
var errPacket = new ErrPacket(_currentHeader);
errPacket.ParsePacketContent(reader);
//------------------------
_parseResult = new MySqlErrorResult(errPacket);
_parsingState = ResultPacketState.ShouldEnd;
return(true);//finished
}
/// <summary>
/// parse header part of the result set
/// </summary>
bool Parse_Header_Content(MySqlStreamReader reader)
{
if (!reader.Ensure(_currentHeader.ContentLength))
{
return(_needMoreData = true);
}
//can parse
var resultSetHeaderPacket = new ResultSetHeaderPacket(_currentHeader);
resultSetHeaderPacket.ParsePacketContent(reader);
_tableHeader = new TableHeader(this.ForPrepareResult);
_parsingState = ResultPacketState.Field_Header;
_rows = new List <DataRowPacket>();
return(false);
}
bool Parse_Row_EOF(MySqlStreamReader reader)
{
if (!reader.Ensure(_currentHeader.ContentLength)) //check if length is enough to parse
{
return(_needMoreData = true);
}
//finish all of each row
var eofPacket = new EofPacket(_currentHeader, this._isProtocol41);
eofPacket.ParsePacketContent(reader);
if (((eofPacket.serverStatus & (int)MySqlServerStatus.SERVER_MORE_RESULTS_EXISTS)) != 0)
{
var tableResult = new MySqlTableResult(_tableHeader, _rows);
_rows = null;//reset
//more than one result table
//mu
if (_currentMultResultSet != null)
{
_currentMultResultSet.AddTableResult(tableResult);
}
else
{
//first time
_currentMultResultSet = new MySqlMultiTableResult();
_currentMultResultSet.AddTableResult(tableResult);;
//not set _parseResult*** because this not finish
}
//--------------------
//see: https://dev.mysql.com/doc/internals/en/multi-resultset.html
//may has more than 1 result
_parsingState = ResultPacketState.Header_Header;
return(false);
}
else
{
//after finish we create a result table
//the move rows into the table
_parseResult = new MySqlTableResult(_tableHeader, _rows);
//not link to the rows anymore
_rows = null;
_currentMultResultSet = null;
_parsingState = ResultPacketState.ShouldEnd; //***
return(true); //end
}
}
public override void Parse(MySqlStreamReader reader)
{
//reset final result
_parseResult = null;
while (!StepParse(reader))
{
;
}
//StepParse() return true if
//1. need more data or
//2. finish
reader.ClearReadBuffer();
if (_needMoreData)
{
//at any state if need more buffer
//then stop parsing and return
if (_supportPartialRelease)
{
if (_rows != null && _rows.Count > 0)
{
_parseResult = new MySqlTableResult(_tableHeader, _rows.ToArray())
{
HasFollower = true
};
}
if (_generateResultMode)
{
//generate new result
#if DEBUG
if (_rows != null)
{
}
#endif
_rows.Clear();
}
}
}
else if (_parsingState == ResultPacketState.ShouldEnd)
{
//reset
reader.Reset();
_parsingState = ResultPacketState.Header_Header;
}
}
bool Parse_Row_Header(MySqlStreamReader reader)
{
if (!reader.Ensure(PACKET_HEADER_LENGTH + 1))
{
return(_needMoreData = true);
}
_currentHeader = reader.ReadPacketHeader();
if (_currentHeader.ContentLength == Packet.MAX_PACKET_LENGTH)
{
//need more than 1 packet for row content
_needMoreThan1Packet = true;
_parsingState = ResultPacketState.Row_Content;
return(false);
}
else if (_currentHeader.ContentLength > Packet.MAX_PACKET_LENGTH)
{
throw new NotSupportedException("???");
}
if (_needMoreThan1Packet)
{
//switch to row content
_parsingState = ResultPacketState.Row_Content;
}
else
{
byte packetType = reader.PeekByte();
switch (packetType)
{
case ERROR_CODE:
_parsingState = ResultPacketState.Error_Content;
break;
case EOF_CODE: //0x00 or 0xfe the OK packet header
_parsingState = ResultPacketState.Row_EOF;
break;
default:
_parsingState = ResultPacketState.Row_Content;
break;
}
}
return(false);
}
bool Parse_Field_Header(MySqlStreamReader reader)
{
if (!reader.Ensure(PACKET_HEADER_LENGTH + 1)) //check if length is enough to parse
{
return _needMoreData = true;
}
_currentHeader = reader.ReadPacketHeader();
byte packetType = reader.PeekByte();
switch (packetType)
{
case ERROR_CODE:
_parsingState = ResultPacketState.Error_Content;
break;
case EOF_CODE:
case OK_CODE:
_parsingState = ResultPacketState.Field_EOF;
break;
default:
//next state => field content of this field
_parsingState = ResultPacketState.Field_Content;
break;
}
return false;
}
bool Parse_Ok_Content(MySqlStreamReader reader)
{
if (!reader.Ensure(_currentHeader.ContentLength)) //check if length is enough to parse
{
return _needMoreData = true;
}
if (this._currentMultResultSet != null)
{
//in multiple result set mode ***
//see https://dev.mysql.com/doc/internals/en/multi-resultset.html
//
var okPacket = new OkPacket(_currentHeader, this._isProtocol41);
okPacket.ParsePacketContent(reader);
_parseResult = _currentMultResultSet;
_parsingState = ResultPacketState.ShouldEnd; //*
//
_currentMultResultSet = null;//reset
}
else
{
var okPacket = new OkPacket(_currentHeader, this._isProtocol41);
okPacket.ParsePacketContent(reader);
_parseResult = new MySqlOkResult(okPacket);
_parsingState = ResultPacketState.ShouldEnd; //*
}
return true;
}
bool Parse_Field_Content(MySqlStreamReader reader)
{
if (!reader.Ensure(_currentHeader.ContentLength)) //check if length is enough to parse
{
#if DEBUG
reader.dbugMonitorData1 = true;
#endif
return _needMoreData = true;
}
var fieldPacket = new FieldPacket(_currentHeader, this._isProtocol41);
fieldPacket.ParsePacketContent(reader);
fieldPacket.FieldIndex = _tableHeader.ColumnCount; //set this before add to field list
_tableHeader.AddField(fieldPacket);
#if DEBUG
//TODO:review here
if (fieldPacket.dbugFailure)
{
throw new NotSupportedException();
}
#endif
//next state => field header of next field
_parsingState = ResultPacketState.Field_Header;
return false;
}
bool Parse_Row_Content(MySqlStreamReader reader)
{
if (!reader.Ensure(_currentHeader.ContentLength))
{
return(_needMoreData = true);
}
if (_currentHeader.ContentLength > Packet.MAX_PACKET_LENGTH)
{
throw new NotSupportedException("???");
}
else if (_currentHeader.ContentLength >= Packet.MAX_PACKET_LENGTH)
{
//can't complete in this round
//so store data into temp extra large buffer
//and set isLargeData= true
StoreBuffer(reader, (int)_currentHeader.ContentLength);
isLargeData = true;
//we still in the row content state
_parsingState = ResultPacketState.Row_Header;
return(false);
}
//--------------------------------
if (_generateResultMode)
{
//this is normal mode (opposite to JustFlushOutMode)
//in this mode we parse packet content
//and add it to the output rows
//----------------------------------
//in this version row buffer len must < int.MaxLength
if (_currentHeader.ContentLength > int.MaxValue)
{
throw new NotSupportedException("not support this length");
}
//------------------------------------
if (isLargeData)
{
if (ms == null)
{ //it should not be null here
throw new NotSupportedException(); //?
}
ms.Write(reader.ReadBuffer((int)_currentHeader.ContentLength), 0,
(int)_currentHeader.ContentLength);
_rows.Add(new DataRowPacket(_currentHeader, ms.ToArray()));
#if NET20
ms.Close();
#endif
ms.Dispose();
ms = null;
isLargeData = false; //reset
}
else
{
_rows.Add(new DataRowPacket(_currentHeader,
reader.ReadBuffer((int)_currentHeader.ContentLength)));
}
}
else
{
//just flush data***
//not create data row
if (_currentHeader.ContentLength > int.MaxValue)
{
throw new Exception("not support content length> int.MaxValue");
}
reader.SkipForward((int)_currentHeader.ContentLength);
}
//-----------------------------------------------------------------------
//after this row, next state = next row header
_parsingState = ResultPacketState.Row_Header;
return(false);
}
bool Parse_Row_Header(MySqlStreamReader reader)
{
if (!reader.Ensure(PACKET_HEADER_LENGTH + 1))
{
return _needMoreData = true;
}
_currentHeader = reader.ReadPacketHeader();
if (_currentHeader.ContentLength == Packet.MAX_PACKET_LENGTH)
{
//need more than 1 packet for row content
_parsingState = ResultPacketState.Row_Content;
return false;
}
else if (_currentHeader.ContentLength > Packet.MAX_PACKET_LENGTH)
{
throw new NotSupportedException("???");
}
byte packetType = reader.PeekByte();
switch (packetType)
{
case ERROR_CODE:
_parsingState = ResultPacketState.Error_Content;
break;
case EOF_CODE://0x00 or 0xfe the OK packet header
_parsingState = ResultPacketState.Row_EOF;
break;
default:
_parsingState = ResultPacketState.Row_Content;
break;
}
return false;
}
bool Parse_Field_EOF(MySqlStreamReader reader)
{
if (!reader.Ensure(_currentHeader.ContentLength)) //check if length is enough to parse
{
return _needMoreData = true;
}
var eofPacket = new EofPacket(_currentHeader, this._isProtocol41);
eofPacket.ParsePacketContent(reader);
_parsingState = ResultPacketState.Row_Header;
return false;
}
bool Parse_Row_Content(MySqlStreamReader reader)
{
if (!reader.Ensure(_currentHeader.ContentLength))
{
return _needMoreData = true;
}
if (_currentHeader.ContentLength > Packet.MAX_PACKET_LENGTH)
{
throw new NotSupportedException("???");
}
else if (_currentHeader.ContentLength >= Packet.MAX_PACKET_LENGTH)
{
//can't complete in this round
//so store data into temp extra large buffer
//and set isLargeData= true
StoreBuffer(reader, (int)_currentHeader.ContentLength);
isLargeData = true;
//we still in the row content state
_parsingState = ResultPacketState.Row_Header;
return false;
}
//--------------------------------
if (_generateResultMode)
{
//this is normal mode (opposite to JustFlushOutMode)
//in this mode we parse packet content
//and add it to the output rows
//----------------------------------
//in this version row buffer len must < int.MaxLength
if (_currentHeader.ContentLength > int.MaxValue)
{
throw new NotSupportedException("not support this length");
}
//------------------------------------
if (isLargeData)
{
if (ms == null)
{ //it should not be null here
throw new NotSupportedException();//?
}
ms.Write(reader.ReadBuffer((int)_currentHeader.ContentLength), 0,
(int)_currentHeader.ContentLength);
_rows.Add(new DataRowPacket(_currentHeader, ms.ToArray()));
ms.Close();
ms.Dispose();
ms = null;
isLargeData = false; //reset
}
else
{
_rows.Add(new DataRowPacket(_currentHeader,
reader.ReadBuffer((int)_currentHeader.ContentLength)));
}
}
else
{
//just flush data***
//not create data row
if (_currentHeader.ContentLength > int.MaxValue)
{
throw new Exception("not support content length> int.MaxValue");
}
reader.SkipForward((int)_currentHeader.ContentLength);
}
//-----------------------------------------------------------------------
//after this row, next state = next row header
_parsingState = ResultPacketState.Row_Header;
return false;
}
bool Parse_Row_EOF(MySqlStreamReader reader)
{
if (!reader.Ensure(_currentHeader.ContentLength)) //check if length is enough to parse
{
return _needMoreData = true;
}
//finish all of each row
var eofPacket = new EofPacket(_currentHeader, this._isProtocol41);
eofPacket.ParsePacketContent(reader);
if (((eofPacket.serverStatus & (int)MySqlServerStatus.SERVER_MORE_RESULTS_EXISTS)) != 0)
{
var tableResult = new MySqlTableResult(_tableHeader, _rows);
_rows = null;//reset
//more than one result table
//mu
if (_currentMultResultSet != null)
{
_currentMultResultSet.AddTableResult(tableResult);
}
else
{
//first time
_currentMultResultSet = new MySqlMultiTableResult();
_currentMultResultSet.AddTableResult(tableResult); ;
//not set _parseResult*** because this not finish
}
//--------------------
//see: https://dev.mysql.com/doc/internals/en/multi-resultset.html
//may has more than 1 result
_parsingState = ResultPacketState.Header_Header;
return false;
}
else
{
//after finish we create a result table
//the move rows into the table
_parseResult = new MySqlTableResult(_tableHeader, _rows);
//not link to the rows anymore
_rows = null;
_currentMultResultSet = null;
_parsingState = ResultPacketState.ShouldEnd;//***
return true;//end
}
}
bool Parse_Error_Content(MySqlStreamReader reader)
{
if (!reader.Ensure(_currentHeader.ContentLength)) //check if length is enough to parse
{
return _needMoreData = true;
}
var errPacket = new ErrPacket(_currentHeader);
errPacket.ParsePacketContent(reader);
//------------------------
_parseResult = new MySqlErrorResult(errPacket);
_parsingState = ResultPacketState.ShouldEnd;
return true;//finished
}
/// <summary>
/// parse header part of the result set
/// </summary>
bool Parse_Header_Content(MySqlStreamReader reader)
{
if (!reader.Ensure(_currentHeader.ContentLength))
{
return _needMoreData = true;
}
//can parse
var resultSetHeaderPacket = new ResultSetHeaderPacket(_currentHeader);
resultSetHeaderPacket.ParsePacketContent(reader);
_tableHeader = new TableHeader(this.ForPrepareResult);
_parsingState = ResultPacketState.Field_Header;
_rows = new List<DataRowPacket>();
return false;
}
public override void Parse(MySqlStreamReader reader)
{
//reset final result
_parseResult = null;
while (!StepParse(reader)) ;
//StepParse() return true if
//1. need more data or
//2. finish
if (_needMoreData)
{
//at any state if need more buffer
//then stop parsing and return
if (_supportPartialRelease)
{
if (_rows != null && _rows.Count > 0)
{
_parseResult = new MySqlTableResult(_tableHeader, _rows) { HasFollower = true };
}
if (_generateResultMode)
{
//generate new result
_rows = new List<DataRowPacket>();
}
}
}
else if (_parsingState == ResultPacketState.ShouldEnd)
{
//reset
reader.Reset();
_parsingState = ResultPacketState.Header_Header;
}
}
