void RecvPacket_A(Action whenRecv)
{
_recvComplete = false;
bool isFirstRecv = true;
_conn.StartReceive(result =>
{
if (result == null)
{
throw new NotSupportedException();
}
else
{
switch (result.Kind)
{
default: throw new NotSupportedException();//unknown
case MySqlResultKind.Ok:
{
MySqlOkResult ok = result as MySqlOkResult;
OkPacket = ok.okpacket;
RecvComplete();
}
break;
case MySqlResultKind.Error:
{
MySqlErrorResult error = result as MySqlErrorResult;
LoadError = error.errPacket;
RecvComplete();
}
break;
case MySqlResultKind.PrepareResponse:
{
//The server will send a OK_Packet if the statement could be reset, a ERR_Packet if not.
//on prepare
MySqlPrepareResponseResult response = result as MySqlPrepareResponseResult;
_prepareContext = new PreparedContext(
response.okPacket.statement_id,
_sqlStrTemplate,
response.tableHeader);
RecvComplete();
}
break;
case MySqlResultKind.TableResult:
{
//support partial table mode
//last sub table is not partial table
//and must notify reader first***
//before call RecvComplete();
//-----------------------------------------
MySqlTableResult tableResult = result as MySqlTableResult;
//***
_recvComplete = !tableResult.HasFollower;
if (_tableResultListener != null)
{
//the _tableResultListener may modifid by other state (Close)
//if don't lock we need to store it to local var
_tableResultListener(tableResult);
}
//-----------------------------------------
if (!tableResult.HasFollower)
{
RecvComplete();
}
}
break;
case MySqlResultKind.MultiTableResult:
{
MySqlMultiTableResult multiTables = result as MySqlMultiTableResult;
List<MySqlTableResult> subTables = multiTables.subTables;
int j = subTables.Count;
for (int i = 0; i < j; ++i)
{
MySqlTableResult table = subTables[i];
if (i < j - 1)
{
//not the last one
//(the last one may complete or not complete)
table.HasFollower = true;
if (_tableResultListener != null)
{
//the _tableResultListener may modifid by other state (Close)
//if don't lock we need to store it to local var
_tableResultListener(table);
}
}
else
{
//this is the last one in the series
//support partial table mode
//last sub table is not partial table
//and must notify reader first***
//before call RecvComplete();
_recvComplete = !table.HasFollower;
if (_tableResultListener != null)
{
//the _tableResultListener may modifid by other state (Close)
//if don't lock we need to store it to local var
_tableResultListener(table);
}
if (!table.HasFollower)
{
RecvComplete();
}
}
}
}
break;
}
}
//-----------------
//exec once
if (isFirstRecv)
{
isFirstRecv = false;
whenRecv();
whenRecv = null;
}
//-----------------
});
}
/// <summary>
/// +/- blocking
/// </summary>
/// <param name="nextAction"></param>
public void Prepare(Action nextAction = null)
{
_execState = QueryExecState.Prepare;
_queryUsedMode = QueryUseMode.Prepare;
if (_cmdParams == null)
{
throw new Exception("Sql cmdParams can not null.");
}
//-------------------
//blocking method***
//wait until execute finish
//-------------------
//prepare sql query
_sqlParserMx.UsePrepareResponseParser();
_prepareContext = null;
//-------------------------------------------------------------
_writer.Reset();
ComPrepareStatementPacket.Write(
_writer,
_sqlStrTemplate.BindValues(_cmdParams, true));
//-------------------------------------------------------------
if (nextAction != null)
{
//not block here
SendAndRecv_A(_writer.ToArray(), nextAction);
}
else
{
//blocking
_conn.InitWait();
SendAndRecv_A(_writer.ToArray(), _conn.UnWait);
_conn.Wait();
}
}
