public static IDataReader ToDataReaderByFields <T>(this T self, params Expression <Func <T, object> >[] fields)
{
var db = new MockDb()
.NewReader(fields)
.NewRow(fields.Select(f => f.Compile()(self)).ToArray());
return(db.AsDbConnection().CreateCommand().ExecuteReader());
}
private static IDataReader ArrayToDataReader <T>(T[] objects, bool isEmpty)
{
var props = objects.First().GetType().GetProperties()
.Where(p => p.PropertyType.IsPrimitive || p.PropertyType == typeof(string) || p.PropertyType == typeof(Guid) ||
p.PropertyType == typeof(DateTime) || p.PropertyType == typeof(byte[]) || p.PropertyType == typeof(char[]))
.ToArray();
var db = new MockDb()
.NewReader(props.Select(p => p.Name).ToArray())
.WithFieldTypes(props.Select(p => p.PropertyType).ToArray());
if (!isEmpty)
{
foreach (var o in objects)
{
var localO = o;
db.NewRow(props.Select(p => p.GetValue(localO, null)).ToArray());
}
}
return(db.AsDbConnection().CreateCommand().ExecuteReader());
}