/// <summary>
/// Serializes the given parameter to the given memory stream
/// </summary>
/// <remarks>
/// <para>This method is called by PrepareSqlBuffers to convert the given
/// parameter to bytes and write those bytes to the given memory stream.
/// </para>
/// </remarks>
/// <returns>True if the parameter was successfully serialized, false otherwise.</returns>
private bool SerializeParameter(MySqlParameterCollection parameters,
MySqlPacket packet, string parmName, int parameterIndex)
{
MySqlParameter parameter = null;
if (!parameters.containsUnnamedParameters)
{
parameter = parameters.GetParameterFlexible(parmName, false);
}
else
{
if (parameterIndex <= parameters.Count)
{
parameter = parameters[parameterIndex];
}
else
{
throw new MySqlException(MySqlResources.ParameterIndexNotFound);
}
}
if (parameter == null)
{
// if we are allowing user variables and the parameter name starts with @
// then we can't throw an exception
if (parmName.StartsWith("@", StringComparison.Ordinal) && ShouldIgnoreMissingParameter(parmName))
{
return(false);
}
throw new MySqlException(
String.Format(MySqlResources.ParameterMustBeDefined, parmName));
}
parameter.Serialize(packet, false, Connection.Settings);
return(true);
}
public override void Execute()
{
// if we are not prepared, then call down to our base
if (!IsPrepared)
{
base.Execute();
return;
}
//support long data here
// create our null bitmap
// we check this because Mono doesn't ignore the case where nullMapBytes
// is zero length.
// if (nullMapBytes.Length > 0)
// {
// byte[] bits = packet.Buffer;
// nullMap.CopyTo(bits,
// nullMap.CopyTo(nullMapBytes, 0);
// start constructing our packet
// if (Parameters.Count > 0)
// nullMap.CopyTo(packet.Buffer, nullMapPosition);
//if (parameters != null && parameters.Count > 0)
//else
// packet.WriteByte( 0 );
//only send rebound if parms change
// now write out all non-null values
packet.Position = dataPosition;
for (int i = 0; i < parametersToSend.Count; i++)
{
MySqlParameter p = parametersToSend[i];
nullMap[i] = (p.Value == DBNull.Value || p.Value == null) ||
p.Direction == ParameterDirection.Output;
if (nullMap[i])
{
continue;
}
packet.Encoding = p.Encoding;
p.Serialize(packet, true, Connection.Settings);
}
if (nullMap != null)
{
nullMap.CopyTo(packet.Buffer, nullMapPosition);
}
executionCount++;
Driver.ExecuteStatement(packet);
}
/// <summary>
/// Serializes the given parameter to the given memory stream
/// </summary>
/// <remarks>
/// <para>This method is called by PrepareSqlBuffers to convert the given
/// parameter to bytes and write those bytes to the given memory stream.
/// </para>
/// </remarks>
/// <returns>True if the parameter was successfully serialized, false otherwise.</returns>
private bool SerializeParameter(MySqlParameterCollection parameters,
MySqlStream stream, string parmName)
{
MySqlParameter parameter = GetParameter(parameters, parmName);
if (parameter == null)
{
// if we are using old syntax, we can't throw exceptions for parameters
// not defined.
if (Connection.Settings.UseOldSyntax)
{
return(false);
}
throw new MySqlException(
String.Format(System.Data.MySqlClient.Properties.Resources.ParameterMustBeDefined, parmName));
}
parameter.Serialize(stream, false);
return(true);
}
public override void Execute()
{
// if we are not prepared, then call down to our base
if (!IsPrepared)
{
base.Execute();
return;
}
MySqlStream stream = new MySqlStream(Driver.Encoding);
//TODO: support long data here
// create our null bitmap
BitArray nullMap = new BitArray(Parameters.Count);
// now we run through the parameters that PREPARE sent back and use
// those names to index into the parameters the user gave us.
// if the user set that parameter to NULL, then we set the null map
// accordingly
if (paramList != null)
{
for (int x = 0; x < paramList.Length; x++)
{
MySqlParameter p = Parameters[paramList[x].ColumnName];
if (p.Value == DBNull.Value || p.Value == null)
{
nullMap[x] = true;
}
}
}
byte[] nullMapBytes = new byte[(Parameters.Count + 7) / 8];
// we check this because Mono doesn't ignore the case where nullMapBytes
// is zero length.
if (nullMapBytes.Length > 0)
{
nullMap.CopyTo(nullMapBytes, 0);
}
// start constructing our packet
stream.WriteInteger(statementId, 4);
stream.WriteByte((byte)0); // flags; always 0 for 4.1
stream.WriteInteger(1, 4); // interation count; 1 for 4.1
stream.Write(nullMapBytes);
//if (parameters != null && parameters.Count > 0)
stream.WriteByte(1); // rebound flag
//else
// packet.WriteByte( 0 );
//TODO: only send rebound if parms change
// write out the parameter types
if (paramList != null)
{
foreach (MySqlField param in paramList)
{
MySqlParameter parm = Parameters[param.ColumnName];
stream.WriteInteger(parm.GetPSType(), 2);
}
// now write out all non-null values
foreach (MySqlField param in paramList)
{
int index = Parameters.IndexOf(param.ColumnName);
if (index == -1)
{
throw new MySqlException("Parameter '" + param.ColumnName +
"' is not defined.");
}
MySqlParameter parm = Parameters[index];
if (parm.Value == DBNull.Value || parm.Value == null)
{
continue;
}
stream.Encoding = param.Encoding;
parm.Serialize(stream, true);
}
}
executionCount++;
Driver.ExecuteStatement(stream.InternalBuffer.ToArray());
}
