/// <summary>
/// 获取最大值
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="thisValue"></param>
/// <returns></returns>
public static T Max <T>(this Taskable <T> thisValue)
{
var isClass = typeof(T).IsClass;
if (isClass)
{
Check.Exception(isClass, "TaskExtensions.Max.thisValue T只能是为string和值类型。");
}
return(thisValue.Tasks.Select(it => it.Result.Value).Max());
}
/// <summary>
/// 如果序列中不包含任何元素，则返回默认值。
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="thisValue"></param>
/// <returns></returns>
public static T ToFirstOrDefault <T>(this Taskable <T> thisValue) where T : class
{
var isClass = typeof(T).IsClass;
if (!isClass)
{
Check.Exception(isClass, "TaskExtensions.ToSingle.thisValue T只能为class。");
}
return(thisValue.MergeEntities <T>().FirstOrDefault());
}
/// <summary>
/// 将Task中的结果集合并成List集成
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="thisValue"></param>
/// <returns></returns>
public static List <T> ToList <T>(this Taskable <T> thisValue) where T : class
{
var isClass = typeof(T).IsClass;
if (!isClass)
{
Check.Exception(isClass, "TaskExtensions.ToList.thisValue T只能为class。");
}
return(thisValue.MergeEntities <T>());
}
/// <summary>
/// 将结果集合并到一个集合
/// </summary>
/// <typeparam name="DataTable"></typeparam>
/// <param name="thisValue"></param>
/// <returns></returns>
public static IEnumerable <DataRow> MergeTable <DataTable>(this Taskable <DataTable> thisValue)
{
var isDataTable = typeof(System.Data.DataTable) == typeof(DataTable);
if (!isDataTable)
{
Check.Exception(isDataTable, "TaskExtensions.MergeTable.thisValue T只能为DataTable。");
}
var reval = thisValue.Tasks.SelectMany(it => it.Result.DataTable.AsEnumerable()).ToList();
return(reval);
}
/// <summary>
///是否存在这条记录
/// </summary>
/// <param name="thisValue"></param>
/// <returns></returns>
public static bool Any(this Taskable <int> thisValue)
{
return(thisValue.Tasks.Select(it => it.Result.Value).Count() > 0);
}
/// <summary>
/// 将结果集合并到一个集合
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="thisValue"></param>
/// <returns></returns>
public static List <T> MergeValue <T>(this Taskable <T> thisValue)
{
var reval = thisValue.Tasks.Select(it => it.Result.Value).ToList();
return(reval);
}
/// <summary>
/// 将结果集合并到一个集合
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="thisValue"></param>
/// <returns></returns>
public static List <T> MergeEntities <T>(this Taskable <T> thisValue) where T : class
{
var reval = thisValue.Tasks.SelectMany(it => it.Result.Entities).ToList();
return(reval);
}
/// <summary>
/// 获取count
/// </summary>
/// <param name="thisValue"></param>
/// <returns></returns>
public static int Count(this Taskable <int> thisValue)
{
return(thisValue.Tasks.Select(it => it.Result.Value).Sum());
}
