public static void EnvChange(this TdsPackageReader reader, int tokenLength, Action <int> transactionAction)
{
// There could be multiple environment change messages following this token.
var processedLength = 0;
var startpos = reader.GetReadPos();
while (tokenLength > processedLength)
{
var type = reader.ReadByte();
switch (type)
{
case TdsEnums.ENV_DATABASE:
case TdsEnums.ENV_LANG:
reader.EnvLanguage();
break;
case TdsEnums.ENV_CHARSET:
reader.EnvCharset();
break;
case TdsEnums.ENV_PACKETSIZE:
reader.EnvPackageSize();
break;
case TdsEnums.ENV_LOCALEID:
throw new NotImplementedException();
case TdsEnums.ENV_COMPFLAGS:
throw new NotImplementedException();
case TdsEnums.ENV_COLLATION:
reader.EnvCollation();
break;
case TdsEnums.ENV_BEGINTRAN:
case TdsEnums.ENV_COMMITTRAN:
case TdsEnums.ENV_ROLLBACKTRAN:
case TdsEnums.ENV_ENLISTDTC:
case TdsEnums.ENV_DEFECTDTC:
case TdsEnums.ENV_TRANSACTIONENDED:
if (transactionAction == null)
{
reader.EnvSqlTransaction();
}
else
{
transactionAction(type);
}
break;
case TdsEnums.ENV_LOGSHIPNODE:
throw new NotImplementedException();
case TdsEnums.ENV_PROMOTETRANSACTION:
throw new NotImplementedException();
case TdsEnums.ENV_TRANSACTIONMANAGERADDRESS:
case TdsEnums.ENV_SPRESETCONNECTIONACK:
throw new NotImplementedException();
case TdsEnums.ENV_USERINSTANCE:
throw new NotImplementedException();
case TdsEnums.ENV_ROUTING:
throw new NotImplementedException();
default:
Debug.Assert(false, "Unknown environment change token: " + type);
break;
}
processedLength = reader.GetReadPos() - startpos;
}
}