public EntityDataReader(IEnumerable <T> col, EntityDataReaderOptions options)
{
Logger = Bootstrapper.GetInstance().Container.Resolve <ILogger <DbDataReader> >(new NamedParameter("loggerName", $"EntityDataReader<{typeof(T)}>"));
this.enumerator = col.GetEnumerator();
this.options = options;
//done without a lock, so we risk running twice
if (scalarAttributes == null)
{
scalarAttributes = DiscoverScalarAttributes(typeof(T));
}
if (options.FlattenRelatedObjects && scalarAttributesPlusRelatedObjectScalarAttributes == null)
{
var atts = DiscoverRelatedObjectScalarAttributes(typeof(T));
scalarAttributesPlusRelatedObjectScalarAttributes = atts.Concat(scalarAttributes).ToList();
}
if (options.FlattenRelatedObjects)
{
attributes = scalarAttributesPlusRelatedObjectScalarAttributes;
}
else
{
attributes = scalarAttributes;
}
}
/// <summary>
/// Enumerates the collection and copies the data into a DataTable.
/// </summary>
/// <typeparam name="T">The element type of the collection.</typeparam>
/// <param name="collection">The collection to copy to a DataTable</param>
/// <returns>A DataTable containing the scalar projection of the collection.</returns>
public static DataTable ToDataTable <T>(this IEnumerable <T> collection)
{
DataTable t = new DataTable();
t.Locale = System.Globalization.CultureInfo.CurrentCulture;
t.TableName = typeof(T).Name;
EntityDataReaderOptions options = EntityDataReaderOptions.Default;
options.ExposeNullableTypes = false;
EntityDataReader <T> dr = new EntityDataReader <T>(collection, options);
t.Load(dr);
return(t);
}
/// <summary>
/// Wraps the IEnumerable in a DbDataReader, having one column for each "scalar" property of the type T.
/// The collection will be enumerated as the client calls IDataReader.Read().
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="collection"></param>
/// <returns></returns>
public static IDataReader AsEntityDataReader <T>(this IEnumerable <T> collection, bool exposeNullableColumns, bool flattenRelatedObjects)
{
EntityDataReaderOptions options = new EntityDataReaderOptions(exposeNullableColumns, flattenRelatedObjects, true);
return(new EntityDataReader <T>(collection, options));
}
