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)
        {
            //验证父级节点是否正常
            if (entity.Nav_UID == entity.Nav_PID) throw new Exception("请勿将自身设置为父级");
            if (entity.Nav_PID!="0" || entity.Nav_PID != "")
            {
                Navigation parent = this.NaviSingle(entity.Nav_PID);
                while (entity.Nav_PID != "0" || entity.Nav_PID != "")
                {
                    if (entity.Nav_UID == parent.Nav_PID) throw new Exception("请勿将自身的下级设置为父级");
                    parent = this.NaviSingle(parent.Nav_PID);
                    if (parent == null) break;
                }
            }
            
            //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)
            {
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