/// <summary>
/// 从全量数据生成分页数据
/// </summary>
/// <param name="source">源数据</param>
/// <param name="para">分页数据</param>
/// <returns>分页后的数据</returns>
public static DataResult <T> ToODataResult <T>(this IQueryable <T> source, IODataParameter para)
{
Checker.NotNull(source, nameof(source));
Checker.CheckODataParameter(para, nameof(para));
int count = 0;
if (para.Count)
{
count = source.Count();
}
IList <T> result;
if (para == null)
{
result = source.ToList();
}
else
{
var orders = para.GetOrderings();
result = ODataQuery(source, para.Top, para.Skip, orders).ToList();
}
return(new DataResult <T>()
{
Count = count, Result = result,
});
}
/// <summary>
/// OData查询，支持 top, skip, orderby
/// </summary>
/// <typeparam name="T">数据源类型</typeparam>
/// <param name="query">数据源</param>
/// <param name="para">OData参数</param>
/// <returns></returns>
public static IQueryable <T> ODataQuery <T>(this IQueryable <T> query, IODataParameter para)
{
Checker.NotNull(query, nameof(query));
Checker.CheckODataParameter(para, nameof(para));
var orders = para.GetOrderings();
return(ODataQuery(query, para.Top, para.Skip, orders));
}