Song.ServiceImpls/StyleCom.cs

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using System;
using System.Collections.Generic;
using System.Text;
using System.Data;
using WeiSha.Common;
using Song.Entities;
using WeiSha.Data;
using Song.ServiceInterfaces;
using System.Data.Common;

namespace Song.ServiceImpls
{
    public class StyleCom : IStyle
    {
        #region 导航管理
        /// <summary>
        /// 添加导航项目
        /// </summary>
        /// <param name="entity">业务实体</param>
        public void NaviAdd(Navigation entity)
        {
            entity.Nav_CrtTime = DateTime.Now;
            Song.Entities.Organization org = Business.Do<IOrganization>().OrganCurrent();
            if (org != null)
            {
                entity.Org_ID = org.Org_ID;
                entity.Org_Name = org.Org_Name;
            }
            //如果没有排序号，则自动计算
            if (entity.Nav_Tax < 1)
            {
                object obj = Gateway.Default.Max<Navigation>(Navigation._.Nav_Tax,
                    Navigation._.Org_ID == entity.Org_ID && Navigation._.Nav_Site == entity.Nav_Site && Navigation._.Nav_Type == entity.Nav_Type && Navigation._.Nav_PID == entity.Nav_PID);
                entity.Nav_Tax = obj is int ? (int)obj + 1 : 0;
            }            
            Gateway.Default.Save<Navigation>(entity);
        }
        /// <summary>
        /// 修改
        /// </summary>
        /// <param name="entity">业务实体</param>
        public void NaviSave(Navigation entity)
        {
            //假如当前导航的所在父级变化了，排序号重新生成
            Navigation old = this.NaviSingle(entity.Nav_ID);
            if (old != null && old.Nav_PID != entity.Nav_PID)
            {
                object obj = Gateway.Default.Max<Navigation>(Navigation._.Nav_Tax, 
                    Navigation._.Nav_Site == entity.Nav_Site && Navigation._.Nav_Type == entity.Nav_Type && Navigation._.Nav_PID == entity.Nav_PID);
                entity.Nav_Tax = obj is int ? (int)obj + 1 : 0;
            }

            Gateway.Default.Save<Navigation>(entity);
        }
        /// 删除，按主键ID；
        /// </summary>
        /// <param name="identify">实体的主键</param>
        public void NaviDelete(int identify)
        {
            Navigation nav = NaviSingle(identify);