/// <summary>
/// Executes the non query.
/// </summary>
/// <param name="conn">The conn.</param>
/// <param name="commandText">The command text.</param>
/// <param name="cmdParams">The CMD params.</param>
/// <returns>System.Int32.</returns>
public static int ExecuteNonQuery(DbConnection conn, string commandText, CmdParams cmdParams)
{
using (var cmd = CreateCommand(conn, commandText, cmdParams))
{
return(cmd.ExecuteNonQuery());
}
}
/// <summary>
/// Executes the scalar.
/// </summary>
/// <param name="conn">The conn.</param>
/// <param name="commandText">The command text.</param>
/// <param name="cmdParams">The CMD params.</param>
/// <returns>System.Object.</returns>
public static object ExecuteScalar(DbConnection conn, string commandText, CmdParams cmdParams)
{
using (var cmd = CreateCommand(conn, commandText, cmdParams))
{
return(cmd.ExecuteScalar());
}
}
/// <summary>
/// Creates the command.
/// </summary>
/// <param name="conn">The conn.</param>
/// <param name="commandText">The command text.</param>
/// <param name="cmdParams">The CMD params.</param>
/// <returns>DbCommand.</returns>
public static DbCommand CreateCommand(DbConnection conn, string commandText, CmdParams cmdParams)
{
if (conn.State == ConnectionState.Closed)
{
conn.Open();
}
var result = conn.CreateCommand();
result.CommandText = commandText;
result.CommandType = CommandType.Text;
if (cmdParams != null)
{
foreach (var param in cmdParams)
{
object value;
if (param.Value is Guid)
{
value = ((Guid)param.Value).ToGuidStr();
}
else if (param.Value is bool)
{
value = ((bool)param.Value).ToShort();
}
else
{
value = param.Value;
}
result.AddParam(param.Key, value);
}
}
return(result);
}
/// <summary>
/// Reads the collection.
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="conn">The conn.</param>
/// <param name="commandText">The command text.</param>
/// <param name="cmdParams">The CMD params.</param>
/// <param name="excludeFields">The exclude fields.</param>
/// <returns>IEnumerable{``0}.</returns>
public static IEnumerable <T> ReadCollection <T>(
DbConnection conn,
string commandText,
CmdParams cmdParams,
string[] excludeFields)
{
return(ReadCollection <T>(conn, commandText, cmdParams, excludeFields, null));
}
public void Add(string constraint, CmdParams Params)
{
_Constraints.Add(constraint);
if (Params != null)
{
foreach (var p in Params)
{
this.Params.Add(p.Key, p.Value);
}
}
}
/// <summary>
/// Executes the reader.
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="conn">The conn.</param>
/// <param name="commandText">The command text.</param>
/// <param name="cmdParams">The CMD params.</param>
/// <param name="func">The func.</param>
/// <returns>``0.</returns>
public static T ExecuteReader <T>(DbConnection conn, string commandText, CmdParams cmdParams, Func <IDataReader, T> func) where T : class
{
using (var cmd = CreateCommand(conn, commandText, cmdParams))
using (var reader = cmd.ExecuteReader())
{
if (reader.Read())
{
return(func(reader));
}
else
{
return(null);
}
}
}
/// <summary>
/// Reads the collection.
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="conn">The conn.</param>
/// <param name="commandText">The command text.</param>
/// <param name="cmdParams">The CMD params.</param>
/// <param name="excludeFields">The exclude fields.</param>
/// <param name="changeTracker">The change tracker.</param>
/// <returns>IEnumerable{``0}.</returns>
public static IEnumerable <T> ReadCollection <T>(
DbConnection conn,
string commandText,
CmdParams cmdParams,
string[] excludeFields,
ObjectsChangeTracker changeTracker)
{
using (var cmd = CreateCommand(conn, commandText, cmdParams))
using (var reader = cmd.ExecuteReader())
{
while (reader.Read())
{
yield return(reader.ToObject <T>(null, excludeFields, changeTracker));
}
}
}
public static T ExecuteScalar<T>(DbConnection conn, string commandText, CmdParams cmdParams)
{
object result = ExecuteScalar(conn, commandText, cmdParams);
if (typeof(T) == typeof(Guid))
{
if(result == null)
{
return (T)((object)Guid.Empty);
}
return (T)((object)new Guid(result.ToString()));
}
if (result is DBNull || result == null)
{
return default(T);
}
return (T)Convert.ChangeType(result, typeof(T));
}
public static DbDataReader ExecuteReader(DbConnection conn, CommandType commandType, string commandText, CmdParams cmdParams)
{
using (var cmd = CreateCommand(conn, commandType, commandText, cmdParams))
{
return(cmd.ExecuteReader(CommandBehavior.CloseConnection));
}
}
public static T ExecuteReaderStruct <T>(DbConnection conn, CommandType commandType, string commandText, CmdParams cmdParams, Func <DbDataReader, T> func) where T : struct
{
using (var cmd = CreateCommand(conn, commandType, commandText, cmdParams))
using (var reader = cmd.ExecuteReader())
{
if (reader.Read())
{
return(func(reader));
}
else
{
return(default(T));
}
}
}
public static IEnumerable <T> ExecuteReaderEnum <T>(DbConnection conn, CommandType commandType, string commandText, CmdParams cmdParams, Func <DbDataReader, T> func)
{
using (var cmd = CreateCommand(conn, commandType, commandText, cmdParams))
using (var reader = cmd.ExecuteReader())
{
while (reader.Read())
{
yield return(func(reader));
}
}
}
public static T ExecuteReaderStruct <T>(this DbConnection conn, CommandType commandType, string commandText, CmdParams cmdParams, Func <DbDataReader, T> func) where T : struct
{
return(DBTools.ExecuteReaderStruct <T>(conn, commandType, commandText, cmdParams, func));
}
public static IEnumerable <T> ExecuteReaderEnum <T>(this DbConnection conn, CommandType commandType, string commandText, CmdParams cmdParams, Func <DbDataReader, T> func)
{
return(DBTools.ExecuteReaderEnum <T>(conn, commandType, commandText, cmdParams, func));
}
public static DbDataReader ExecuteReader(this DbConnection conn, CommandType commandType, string commandText, CmdParams cmdParams)
{
return(DBTools.ExecuteReader(conn, commandType, commandText, cmdParams));
}
public static T ExecuteScalar <T>(this DbConnection conn, CommandType commandType, string commandText, CmdParams cmdParams)
{
return(DBTools.ExecuteScalar <T>(conn, commandType, commandText, cmdParams));
}
public static int ExecuteNonQuery(this DbConnection conn, CommandType commandType, string commandText, CmdParams cmdParams)
{
return(DBTools.ExecuteNonQuery(conn, commandType, commandText, cmdParams));
}
/// <summary>
/// Executes the reader.
/// </summary>
/// <param name="conn">The conn.</param>
/// <param name="commandText">The command text.</param>
/// <param name="cmdParams">The CMD params.</param>
/// <returns>IDataReader.</returns>
public static IDataReader ExecuteReader(DbConnection conn, string commandText, CmdParams cmdParams)
{
using (var cmd = CreateCommand(conn, commandText, cmdParams))
{
return(cmd.ExecuteReader());
}
}
public FilterConstraints()
{
_Constraints = new List <string>();
Params = new CmdParams();
}
