///<summary>
///字典左连接查询 使用，NavigateDicAttribute标记属性
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="select"></param>
/// <returns></returns>
public static ISelect <T> LeftJonDic <T>(this ISelect <T> select)
where T : class
{
var responsitory = _services.BuildServiceProvider().GetService(typeof(ISysDicResponsitory)) as ISysDicResponsitory;
var type = typeof(T);
foreach (var item in type.GetProperties())
{
var navDic = item.GetCustomAttribute(typeof(NavigateDicAttribute), false);
if (navDic != null)
{
var dicAttr = navDic as NavigateDicAttribute;
var dicIdValue = responsitory.Where(p => p.Code == dicAttr.DicCode).First().Id;
var target = Expression.Parameter(typeof(T), "p");
var dic = Expression.Property(target, item.Name);
var left = Expression.Property(dic, "DicId");
var right = Expression.Constant(dicIdValue);
var body = Expression.Equal(left, right);
var left1 = Expression.Property(dic, "Value");
var right1 = Expression.Property(target, dicAttr.FieldName);
var body1 = Expression.Equal(left1, right1);
var expre = Expression.AndAlso(body1, body);
var lambda = Expression.Lambda <Func <T, bool> >(expre, target);
select = select.LeftJoin(lambda);
}
}
return(select);
}
