SysRevelanceApp.cs
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using System;
using System.Collections.Generic;
using System.Linq;
using WebRepository;
namespace WebApp
{
public class SysRevelanceApp : WebApp<SysRelevance>
{
public SysRevelanceApp(IUnitWork unitWork, IRepository<SysRelevance> repository) : base(unitWork, repository)
{
}
public SysRevelanceApp SetLoginInfo(LoginInfo loginInfo)
{
Repository._loginInfo = loginInfo;
return this;
}
/// <summary>
/// 添加关联
/// <para>比如给用户分配资源，那么firstId就是用户ID，secIds就是资源ID列表</para>
/// </summary>
/// <param name="type">关联的类型，如Define.XXX</param>
public void Assign(string type, int firstId, int[] secIds)
{
Assign(type, secIds.ToLookup(u => firstId));
}
public void Assign(string key, ILookup<int, int> idMaps)
{
DeleteBy(key, idMaps);
UnitWork.BatchAdd((from sameVals in idMaps
from value in sameVals
select new SysRelevance
{
RelKey = key,
FirstId = sameVals.Key,
SecondId = value,
CreateBy = Repository._loginInfo.Account,
CreateTime = DateTime.Now
}).ToArray());
UnitWork.Save();
}
/// <summary>
/// 删除关联
/// </summary>
/// <param name="key">关联标识</param>
/// <param name="idMaps">关联的<firstId, secondId>数组</param>
public void DeleteBy(string key, ILookup<int, int> idMaps)
{
foreach (var sameVals in idMaps)
{
foreach (var value in sameVals)
{
Repository.Delete(u => u.RelKey == key && u.FirstId == sameVals.Key && u.SecondId == value);
}
}
}
/// <summary>
/// 取消关联
/// </summary>
/// <param name="type">关联的类型，如Define.XXX</param>
/// <param name="firstId">The first identifier.</param>
/// <param name="secIds">The sec ids.</param>
public void UnAssign(string type, int firstId, int[] secIds)
{
DeleteBy(type, secIds.ToLookup(u => firstId));
}
public void DeleteBy(string key, params int[] firstIds)
{
List<int> firstIdslist = firstIds.ToList();
Repository.Delete(u => firstIdslist.Contains(u.FirstId.Value) && u.RelKey == key);
}
/// <summary>
/// 添加新的关联
/// </summary>
/// <param name="key">关联标识</param>
/// <param name="idMaps">关联的<firstId, secondId>数组</param>
public void AddRelevance(string key, ILookup<int, int> idMaps)
{
DeleteBy(key, idMaps);
UnitWork.BatchAdd<SysRelevance>((from sameVals in idMaps
from value in sameVals
select new SysRelevance
{
RelKey = key,
FirstId = sameVals.Key,
SecondId = value,
CreateBy = Repository._loginInfo.Account,
CreateTime = DateTime.Now
}).ToArray());
UnitWork.Save();
}
/// <summary>
/// 根据关联表的一个键获取另外键的值
/// </summary>
/// <param name="key">映射标识</param>
/// <param name="returnSecondIds">返回的是否为映射表的第二列，如果不是则返回第一列</param>
/// <param name="ids">已知的ID列表</param>
/// <returns>List<System.String>.</returns>
public List<int> Get(string key, bool returnSecondIds, params int[] ids)
{
List<int> idlist = ids.ToList();
if (returnSecondIds)
{
return Repository.Find(u => u.RelKey == key
&& idlist.Contains(u.FirstId.Value)).Select(u => u.SecondId.Value).ToList();
}
else
{
return Repository.Find(u => u.RelKey == key
&& idlist.Contains(u.SecondId.Value)).Select(u => u.FirstId.Value).ToList();
}
}
}
}