using System;
using System.Linq.Expressions;

namespace Ant.ORM
{
    /// <summary>
    /// 分组
    /// </summary>
    /// <typeparam name="T"></typeparam>
    public interface IGroupingQuery<T>
    {
        /// <summary>
        /// 
        /// </summary>
        /// <typeparam name="K"></typeparam>
        /// <param name="predicate"></param>
        /// <returns></returns>
        IGroupingQuery<T> ThenBy<K>(Expression<Func<T, K>> predicate);
        /// <summary>
        /// 
        /// </summary>
        /// <param name="predicate"></param>
        /// <returns></returns>
        IGroupingQuery<T> Having(Expression<Func<T, bool>> predicate);
        /// <summary>
        /// 
        /// </summary>
        /// <typeparam name="TResult"></typeparam>
        /// <param name="selector"></param>
        /// <returns></returns>
        IQuery<TResult> Select<TResult>(Expression<Func<T, TResult>> selector);
    }
}