public string SerializeCommand(RemotingDbCommand command)
{
var data = new RemotingDbCommandData()
{
CommandText = command.CommandText,
Parameters = command.Parameters.OfType <RemotingDbParameter>().Select(f => new RemotingDbParameterData()
{
ParameterName = f.ParameterName,
Value = f.Value,
DbType = f.DbType,
Direction = f.Direction == 0 ? ParameterDirection.Input : f.Direction,
IsNullable = f.IsNullable,
Precision = f.Precision,
Scale = f.Scale,
Size = f.Size,
SourceColumn = f.SourceColumn,
SourceVersion = f.SourceVersion == 0 ? DataRowVersion.Default : f.SourceVersion
}).ToArray(),
CommandTimeout = command.CommandTimeout,
CommandType = command.CommandType == 0 ? CommandType.Text : command.CommandType,
};
using (var textWriter = new MemoryStream())
{
RemotingCommandSerializer.WriteObject(textWriter, data);
return(Encoding.Default.GetString(textWriter.ToArray()));
}
}
/// <inheritdoc />
public IDbCommand CreateCommand(string strSql, IDbConnection conn, params IDataParameter[] fields)
{
var remotingDbCommand = new RemotingDbCommand(this)
{
CommandText = strSql,
Connection = conn
};
foreach (var dataParameter in fields)
{
remotingDbCommand.Parameters.Add(dataParameter);
}
return(remotingDbCommand);
}
public override object ExecuteScalar(RemotingDbCommand command)
{
return(ExecuteScalar(SerializeCommand(command),
GetOrThrowConnectionId(command.Connection as RemotingDbConnection),
TryGetTransactionId(command.Transaction as RemoteDbTransaction)));
}
public override IEnumerable <IEnumerable <IDataRecord> > EnumerateCommand(RemotingDbCommand command, CommandBehavior behavior, out int recordsAffected)
{
return(ExecuteCommand(SerializeCommand(command),
GetOrThrowConnectionId(command.Connection as RemotingDbConnection),
TryGetTransactionId(command.Transaction as RemoteDbTransaction), out recordsAffected));
}
/// <summary>
/// Should execute the query an return a IDataReader that contains the result.
/// You can overwrite the EnumerateDataRecord method to use an inbuild IDataReader
/// </summary>
/// <param name="command"></param>
/// <param name="behavior"></param>
/// <returns></returns>
public virtual IDataReader ExecuteReader(RemotingDbCommand command, CommandBehavior behavior)
{
return(new VirtualDataReader(EnumerateCommand(command, behavior, out var records), Config, records));
}
/// <summary>
/// You can overwrite this method to return multiple sets of IDataRecords.
/// If you only got objects you can use the ObjectDataRecord to wrap them into IDataRecords
/// </summary>
/// <param name="command"></param>
/// <param name="behavior"></param>
/// <param name="recordsAffected"></param>
/// <returns></returns>
public virtual IEnumerable <IEnumerable <IDataRecord> > EnumerateCommand(RemotingDbCommand command, CommandBehavior behavior, out int recordsAffected)
{
throw new NotImplementedException("Please ether overwrite the ExecuteReader function or the EnumerateCommand function.");
}
/// <summary> /// Should execute the query and return a single result /// </summary> /// <param name="command"></param> /// <returns></returns> public abstract object ExecuteScalar(RemotingDbCommand command);
/// <summary> /// Should execute the Query and return an value int /// </summary> /// <param name="command"></param> /// <returns></returns> public abstract int ExecuteQuery(RemotingDbCommand command);
