/// <summary>
/// Execute the query and return a new instance of T with the first row of results
/// </summary>
/// <typeparam name="T">Object type</typeparam>
/// <returns>First row of results</returns>
/// <example>
/// <code>
/// Employee emp = cmd.ExecuteRow<Employee>();
/// </code>
/// <remarks>
/// Result object property (ex. Employee.Name) may be tagged with the ColumnAttribute
/// to set which column name (ex. [Column("Name")] must be associated to this property.
/// </remarks>
/// </example>
public async virtual Task <T> ExecuteRowAsync <T>()
{
// Primitive type: Executable<string>()
if (TypeExtension.IsPrimitive(typeof(T)))
{
return(await this.ExecuteScalarAsync <T>());
}
else
{
// Get DataTable
var rows = await ExecuteInternalCommand(async() =>
{
using (DbDataReader dr = await this.Command.ExecuteReaderAsync(System.Data.CommandBehavior.SingleRow))
{
// Dynamic type: Executable<dynamic>()
if (DynamicConvertor.IsDynamic(typeof(T)))
{
return(await DataReaderConvertor.ToDynamicAsync <T>(dr));
}
// Object type: Executable<Employee>()
else
{
return((await DataReaderConvertor.ToTypeAsync <T>(dr)).Rows);
}
}
});
// Return
return(rows?.Any() == true?rows.First() : default(T));
}
}
/// <summary>
/// Execute the query and return an array of new instances of typed results filled with data table result.
/// </summary>
/// <typeparam name="T">Object type</typeparam>
/// <returns>Array of typed results</returns>
/// <example>
/// <code>
/// Employee[] emp = cmd.ExecuteTable<Employee>();
/// var x = cmd.ExecuteTable<Employee>();
/// </code>
/// <remarks>
/// Result object property (ex. Employee.Name) may be tagged with the ColumnAttribute
/// to set which column name (ex. [Column("Name")] must be associated to this property.
/// </remarks>
/// </example>
public async virtual Task <IEnumerable <T> > ExecuteTableAsync <T>()
{
return(await ExecuteInternalCommand(async() =>
{
using (DbDataReader dr = await this.Command.ExecuteReaderAsync())
{
// Primitive type: Executable<string>()
if (TypeExtension.IsPrimitive(typeof(T)))
{
return await DataReaderConvertor.ToPrimitivesAsync <T>(dr);
}
// Dynamic type: Executable<dynamic>()
else if (DynamicConvertor.IsDynamic(typeof(T)))
{
return await DataReaderConvertor.ToDynamicAsync <T>(dr);
}
// Object type: Executable<Employee>()
else
{
return (await DataReaderConvertor.ToTypeAsync <T>(dr)).Rows;
}
}
}));
}