Entity Framework底层操作封装V2版本（7）

下面就是使用了：首先我们举例没有缓存的类的使用：同时也把多条件组合 lambda 的使用弄上来给大家看看

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using JFrame.AccessCommon;
using JFrame.Entity;
using JFrame.Utility;
using System.Linq.Expressions;

namespace JFrame.Dal
{
    public class SysOperateLogDal : DalBaseData<SysOperateLog>
    {
        /// <summary>
        ///
        /// </summary>
        /// <param name="PageInfo"></param>
        /// <param name="ErrorType"></param>
        /// <param name="ErrorContent"></param>
        /// <param name="StarTime"></param>
        /// <param name="EndTime"></param>
        /// <returns></returns>
        public List<SysOperateLog> GetSysOperateLog(PagingInfo PageInfo, string ErrorType, string ErrorContent, DateTime? StarTime, DateTime? EndTime)
        {
            Expression<Func<SysOperateLog, bool>> expression = PredicateExtensions.True<SysOperateLog>();
            expression = expression.And(o => 1 == 1);
            if (!string.IsNullOrEmpty(ErrorType))
            {
                expression = expression.And(o => o.OType == ErrorType);
            }
            if (!string.IsNullOrEmpty(ErrorContent))
            {
                expression = expression.And(o => o.OContent.Contains(ErrorContent));
            }
            if (StarTime!=null)
            {
                expression = expression.And(o => o.ODate > StarTime);
            }
            if (EndTime != null)
            {
                expression = expression.And(o => o.ODate < EndTime);
            }
            return GetAllEntityByPage(expression, PageInfo, p => p.LogId);
        }
    }
}