public static TObject GetFirstItem <TObject>(IMapper <TObject> mapper, DataReaderAdapter dataReader, Func <TObject> createObject)
{
if (mapper == null)
{
throw new ArgumentNullException("mapper");
}
if (createObject == null)
{
throw new ArgumentNullException("createObject");
}
TObject result = default(TObject);
if (dataReader != null)
{
if (dataReader.Read())
{
result = createObject();
mapper.Fill(dataReader, result);
}
}
return(result);
}
public static List <NameValue <TValue, TKey> > GetNameValueList <TValue, TKey>(DataReaderAdapter dataReader, string valueField, string keyField)
{
var result = new List <NameValue <TValue, TKey> >();
if (dataReader != null)
{
while (dataReader.Read())
{
result.Add(new NameValue <TValue, TKey>(dataReader.GetValue <TValue>(valueField), dataReader.GetValue <TKey>(keyField)));
}
}
return(result);
}
public static List <TObject> GetValueItemsList <TObject>(IValueMapper <TObject> mapper, DataReaderAdapter dataReader)
{
if (mapper == null)
{
throw new ArgumentNullException("mapper");
}
List <TObject> result = new List <TObject>();
if (dataReader != null)
{
while (dataReader.Read())
{
result.Add(mapper.GetValue(dataReader));
}
}
return(result);
}
public static List <TObject> GetItemsList <TObject>(DataReaderAdapter dataReader, Func <DataReaderAdapter, TObject> createObject)
{
if (createObject == null)
{
throw new ArgumentNullException("createObject");
}
List <TObject> result = new List <TObject>();
if (dataReader != null)
{
while (dataReader.Read())
{
TObject item = createObject(dataReader);
result.Add(item);
}
}
return(result);
}
public static Dictionary <TKey, List <TObject> > GetGroupedItemsList <TObject, TMapper, TKey>(string keyFieldName, DataReaderAdapter dataReader)
where TObject : new()
where TMapper : IMapper <TObject>, new()
{
var mapper = new TMapper();
List <Tuple <TKey, TObject> > list = new List <Tuple <TKey, TObject> >();
if (dataReader != null)
{
while (dataReader.Read())
{
TKey key = dataReader.GetValue <TKey>(keyFieldName);
TObject item = new TObject();
mapper.Fill(dataReader, item);
list.Add(new Tuple <TKey, TObject>(key, item));
}
}
return(list.GroupBy(x => x.Item1)
.ToDictionary(x => x.Key, x => x.Select(i => i.Item2).ToList()));
}
public static List <TObject> GetItemsList <TObject>(IMapper <TObject> mapper, DataReaderAdapter dataReader)
where TObject : new()
{
if (mapper == null)
{
throw new ArgumentNullException("mapper");
}
List <TObject> result = new List <TObject>();
if (dataReader != null)
{
while (dataReader.Read())
{
TObject item = new TObject();
mapper.Fill(dataReader, item);
result.Add(item);
}
}
return(result);
}