/// <summary>
/// 映射数据源中的数据到目标对象
/// </summary>
/// <typeparam name="TDestination"></typeparam>
/// <param name="source"></param>
/// <returns></returns>
public static List <TDestination> List <TDestination>(object source)
{
var accessor = GetAccessor <TDestination>();
if (accessor == null)
{
throw new MapperException(string.Format("未找到适用{0}的对象访问器。", typeof(TDestination).FullName));
}
var typeMapper = NativeTypeMapper.GetTypeMapper <TDestination>();
var dataSourceReader = NativeDataSourceReader.GetReader(source);
var fields = accessor.MetaInfo.GetPropertyNames();
dataSourceReader.Ordinal(fields);
var list = new List <TDestination>(dataSourceReader.Count > 0 ? dataSourceReader.Count : 8);
object[] initData;
while (null != (initData = dataSourceReader.Read()))
{
TDestination destObj = typeMapper.Cast(initData);
if (destObj != null)
{
list.Add(destObj);
}
}
return(list);
}
/// <summary>
/// 映射数据源中的一行数据到目标对象
/// </summary>
/// <typeparam name="TDestination"></typeparam>
/// <param name="source"></param>
/// <returns></returns>
public static TDestination Single <TDestination>(object source)
{
var accessor = GetAccessor <TDestination>();
if (accessor == null)
{
throw new MapperException(string.Format("未找到适用{0}的对象访问器。", typeof(TDestination).FullName));
}
var dataSourceReader = NativeDataSourceReader.GetReader(source);
var fields = accessor.MetaInfo.GetPropertyNames();
dataSourceReader.Ordinal(fields);
var initData = dataSourceReader.Read();
if (initData != null)
{
return(NativeTypeMapper.GetTypeMapper <TDestination>().Cast(initData));
}
return(default(TDestination));
}
