internal static IEnumerable <T> GetDataObjects <T>(MySqlConnection ExistingConnection, string QueryString, Dictionary <string, object> Parameters = null, bool ThrowException = true, MySqlTransaction SqlTransaction = null) where T : DALBaseModel
{
return(RefinedResultsHelper.GetDataTable(ExistingConnection, QueryString, Parameters: Parameters, ThrowException: ThrowException, SqlTransaction: SqlTransaction)
.AsEnumerable()
.Select(x => x == null
? null
: typeof(T).GetConstructors().Any(y => y.GetParameters().Length > 2)
? DatabaseCoreUtilities.CreateCreatorExpression <DataRow, string, bool, bool, T>()(x, null, false, false)
: DatabaseCoreUtilities.CreateCreatorExpression <DataRow, string, T>()(x, null)));
}
/// <summary>
/// Query the database to get a single value
/// </summary>
/// <typeparam name="T">Return type</typeparam>
/// <param name="EstablishedConnection">An open and established connection to a MySQL database</param>
/// <param name="QueryString">SQL query to retrieve the value requested</param>
/// <param name="Parameters">Dictionary of named parameters</param>
/// <param name="ThrowException">Throw exception or swallow and return default(T)</param>
/// <returns>Single value of type T</returns>
internal static T GetScalar <T>(MySqlConnection EstablishedConnection, string QueryString, Dictionary <string, object> Parameters = null, bool ThrowException = true, MySqlTransaction SqlTransaction = null)
{
return(DatabaseWorkHelper.DoDatabaseWork <T>(EstablishedConnection, QueryString,
(cmd) =>
{
cmd.Parameters.AddAllParameters(Parameters);
var scalarResult = cmd.ExecuteScalar();
return DatabaseCoreUtilities.ConvertScalar <T>(scalarResult);
},
ThrowException: ThrowException, UseTransaction: SqlTransaction != null, SqlTransaction: SqlTransaction));
}
internal static IEnumerable <T> GetDataList <T>(MySqlConnection ExistingConnection, string QueryString, Dictionary <string, object> Parameters = null, bool ThrowException = true, MySqlTransaction SqlTransaction = null) //where T : DALBaseModel
{
return(RefinedResultsHelper.GetDataTable(ExistingConnection, QueryString, Parameters: Parameters, ThrowException: ThrowException, SqlTransaction: SqlTransaction)
.AsEnumerable()
.Select(x => (T)DatabaseCoreUtilities.ConvertScalar <T>(x[0])));
}
