| public GetColumns ( int count ) : MySql.Data.MySqlClient.MySqlField[] | ||
| count | int | |
| Результат | MySql.Data.MySqlClient.MySqlField[] | |
public int PrepareStatement(string sql, ref MySqlField[] parameters)
{
//TODO: check this
//ClearFetchedRow();
packet.Length = sql.Length * 4 + 5;
byte[] buffer = packet.Buffer;
int len = Encoding.GetBytes(sql, 0, sql.Length, packet.Buffer, 5);
packet.Position = len + 5;
buffer[4] = (byte)DBCmd.PREPARE;
ExecutePacket(packet);
packet = stream.ReadPacket();
int marker = packet.ReadByte();
if (marker != 0)
{
throw new MySqlException("Expected prepared statement marker");
}
int statementId = packet.ReadInteger(4);
int numCols = packet.ReadInteger(2);
int numParams = packet.ReadInteger(2);
//TODO: find out what this is needed for
packet.ReadInteger(3);
if (numParams > 0)
{
parameters = owner.GetColumns(numParams);
// we set the encoding for each parameter back to our connection encoding
// since we can't trust what is coming back from the server
for (int i = 0; i < parameters.Length; i++)
{
parameters[i].Encoding = Encoding;
}
}
if (numCols > 0)
{
while (numCols-- > 0)
{
packet = stream.ReadPacket();
//TODO: handle streaming packets
}
ReadEOF();
}
return(statementId);
}
/// <summary>
/// Loads the column metadata for the current resultset
/// </summary>
private void LoadColumns(int numCols)
{
Fields = _driver.GetColumns(numCols);
Values = new IMySqlValue[numCols];
_uaFieldsUsed = new bool[numCols];
_fieldHashCi = new Dictionary <string, int>(StringComparer.OrdinalIgnoreCase);
for (int i = 0; i < Fields.Length; i++)
{
string columnName = Fields[i].ColumnName;
if (!_fieldHashCi.ContainsKey(columnName))
{
_fieldHashCi.Add(columnName, i);
}
Values[i] = Fields[i].GetValueObject();
}
}
/// <summary>
/// Loads the column metadata for the current resultset
/// </summary>
private void LoadColumns(int numCols)
{
fields = driver.GetColumns(numCols);
values = new IMySqlValue[numCols];
uaFieldsUsed = new bool[numCols];
fieldHashCS = new Hashtable();
fieldHashCI = new Hashtable(StringComparer.InvariantCultureIgnoreCase);
for (int i = 0; i < fields.Length; i++)
{
string columnName = fields[i].ColumnName;
if (!fieldHashCS.ContainsKey(columnName))
{
fieldHashCS.Add(columnName, i);
}
if (!fieldHashCI.ContainsKey(columnName))
{
fieldHashCI.Add(columnName, i);
}
values[i] = fields[i].GetValueObject();
}
}
