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借助Session保存当前在线对象，减少数据库查询
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@nnhy
nnhy committed Mar 18, 2024
1 parent d5a480d commit 7a03d60
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252 changes: 124 additions & 128 deletions NewLife.Cube/Entity/用户在线.Biz.cs
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Original file line number Diff line number Diff line change
@@ -1,115 +1,112 @@
using System;
using System.Collections.Generic;
using NewLife.Data;
using NewLife.Data;
using XCode;
using XCode.Configuration;
using XCode.Membership;

namespace NewLife.Cube.Entity
namespace NewLife.Cube.Entity;

/// <summary>用户在线</summary>
public partial class UserOnline : Entity<UserOnline>
{
/// <summary>用户在线</summary>
public partial class UserOnline : Entity<UserOnline>
#region 对象操作
static UserOnline()
{
#region 对象操作
static UserOnline()
{
// 累加字段，生成 Update xx Set Count=Count+1234 Where xxx
var df = Meta.Factory.AdditionalFields;
df.Add(__.Times);
//df.Add(__.OnlineTime);

var sc = Meta.SingleCache;
if (sc.Expire < 20 * 60) sc.Expire = 20 * 60;
sc.FindSlaveKeyMethod = k => Find(__.SessionID, k);
sc.GetSlaveKeyMethod = e => e.SessionID;

// 过滤器 UserModule、TimeModule、IPModule
Meta.Modules.Add<TimeModule>();
Meta.Modules.Add<IPModule>();
}
// 累加字段，生成 Update xx Set Count=Count+1234 Where xxx
var df = Meta.Factory.AdditionalFields;
df.Add(__.Times);
//df.Add(__.OnlineTime);

var sc = Meta.SingleCache;
if (sc.Expire < 20 * 60) sc.Expire = 20 * 60;
sc.FindSlaveKeyMethod = k => Find(__.SessionID, k);
sc.GetSlaveKeyMethod = e => e.SessionID;

// 过滤器 UserModule、TimeModule、IPModule
Meta.Modules.Add<TimeModule>();
Meta.Modules.Add<IPModule>();
}

/// <summary>验证并修补数据，通过抛出异常的方式提示验证失败。</summary>
/// <param name="isNew">是否插入</param>
public override void Valid(Boolean isNew)
{
// 如果没有脏数据，则不需要进行任何处理
if (!HasDirty) return;
/// <summary>验证并修补数据，通过抛出异常的方式提示验证失败。</summary>
/// <param name="isNew">是否插入</param>
public override void Valid(Boolean isNew)
{
// 如果没有脏数据，则不需要进行任何处理
if (!HasDirty) return;

// 截取长度
CutField(_.Status, _.Page, _.Platform, _.OS, _.Device, _.Brower, _.NetType);
// 截取长度
CutField(_.Status, _.Page, _.Platform, _.OS, _.Device, _.Brower, _.NetType);

// 建议先调用基类方法，基类方法会做一些统一处理
base.Valid(isNew);
}
// 建议先调用基类方法，基类方法会做一些统一处理
base.Valid(isNew);
}

void CutField(params FieldItem[] fields)
void CutField(params FieldItem[] fields)
{
foreach (var field in fields)
{
foreach (var field in fields)
var len = field.Length;
if (len > 0 && field.Type == typeof(String))
{
var len = field.Length;
if (len > 0 && field.Type == typeof(String))
var str = this[field.Name] as String;
if (!str.IsNullOrEmpty() && str.Length > len)
{
var str = this[field.Name] as String;
if (!str.IsNullOrEmpty() && str.Length > len)
{
str = str[..len];
SetItem(field.Name, str);
}
str = str[..len];
SetItem(field.Name, str);
}
}
}
#endregion
}
#endregion

#region 扩展属性
#endregion
#region 扩展属性
#endregion

#region 扩展查询
/// <summary>根据编号查找</summary>
/// <param name="id">编号</param>
/// <returns>实体对象</returns>
public static UserOnline FindByID(Int32 id)
{
if (id <= 0) return null;
#region 扩展查询
/// <summary>根据编号查找</summary>
/// <param name="id">编号</param>
/// <returns>实体对象</returns>
public static UserOnline FindByID(Int32 id)
{
if (id <= 0) return null;

//// 实体缓存
//if (Meta.Session.Count < 1000) return Meta.Cache.Find(e => e.ID == id);
//// 实体缓存
//if (Meta.Session.Count < 1000) return Meta.Cache.Find(e => e.ID == id);

// 单对象缓存
return Meta.SingleCache[id];
// 单对象缓存
return Meta.SingleCache[id];

//return Find(_.ID == id);
}

/// <summary>根据用户查找</summary>
/// <param name="userId">用户</param>
/// <returns>实体列表</returns>
public static IList<UserOnline> FindAllByUserID(Int32 userId)
{
//// 实体缓存
//if (Meta.Session.Count < 1000) return Meta.Cache.FindAll(e => e.UserID == userId);
//return Find(_.ID == id);
}

return FindAll(_.UserID == userId);
}
/// <summary>根据用户查找</summary>
/// <param name="userId">用户</param>
/// <returns>实体列表</returns>
public static IList<UserOnline> FindAllByUserID(Int32 userId)
{
//// 实体缓存
//if (Meta.Session.Count < 1000) return Meta.Cache.FindAll(e => e.UserID == userId);

/// <summary>根据会话查找</summary>
/// <param name="sessionId">会话</param>
/// <param name="cache">是否从缓存查询</param>
/// <returns>实体列表</returns>
public static UserOnline FindBySessionID(String sessionId, Boolean cache = true)
{
if (sessionId.IsNullOrEmpty()) return null;
return FindAll(_.UserID == userId);
}

if (cache)
{
//// 实体缓存
//if (Meta.Session.Count < 1000) return Meta.Cache.Find(e => e.SessionID.EqualIgnoreCase(sessionId));
/// <summary>根据会话查找</summary>
/// <param name="sessionId">会话</param>
/// <param name="cache">是否从缓存查询</param>
/// <returns>实体列表</returns>
public static UserOnline FindBySessionID(String sessionId, Boolean cache = true)
{
if (sessionId.IsNullOrEmpty()) return null;

return Meta.SingleCache.GetItemWithSlaveKey(sessionId) as UserOnline;
}
if (cache)
{
//// 实体缓存
//if (Meta.Session.Count < 1000) return Meta.Cache.Find(e => e.SessionID.EqualIgnoreCase(sessionId));

return Find(_.SessionID == sessionId);
return Meta.SingleCache.GetItemWithSlaveKey(sessionId) as UserOnline;
}

return Find(_.SessionID == sessionId);
}

/// <summary>根据会话查找</summary>
/// <param name="sessionId">会话</param>
/// <returns>实体列表</returns>
Expand All @@ -122,52 +119,51 @@ public static IList<UserOnline> FindAllBySessionID(String sessionId)

return FindAll(_.SessionID == sessionId);
}
#endregion

#region 高级查询
/// <summary>高级查询</summary>
/// <param name="userId">用户</param>
/// <param name="sessionId">会话。Web的SessionID或Server的会话编号</param>
/// <param name="start">创建时间开始</param>
/// <param name="end">创建时间结束</param>
/// <param name="key">关键字</param>
/// <param name="page">分页参数信息。可携带统计和数据权限扩展查询等信息</param>
/// <returns>实体列表</returns>
public static IList<UserOnline> Search(Int32 userId, String sessionId, DateTime start, DateTime end, String key, PageParameter page)
{
var exp = new WhereExpression();
#endregion

#region 高级查询
/// <summary>高级查询</summary>
/// <param name="userId">用户</param>
/// <param name="sessionId">会话。Web的SessionID或Server的会话编号</param>
/// <param name="start">创建时间开始</param>
/// <param name="end">创建时间结束</param>
/// <param name="key">关键字</param>
/// <param name="page">分页参数信息。可携带统计和数据权限扩展查询等信息</param>
/// <returns>实体列表</returns>
public static IList<UserOnline> Search(Int32 userId, String sessionId, DateTime start, DateTime end, String key, PageParameter page)
{
var exp = new WhereExpression();

if (userId >= 0) exp &= _.UserID == userId;
if (!sessionId.IsNullOrEmpty()) exp &= _.SessionID == sessionId;
exp &= _.CreateTime.Between(start, end);
if (!key.IsNullOrEmpty()) exp &= _.Name.Contains(key) | _.SessionID.Contains(key) | _.Page.Contains(key) | _.Status.Contains(key) | _.CreateIP.Contains(key) | _.UpdateIP.Contains(key);
if (userId >= 0) exp &= _.UserID == userId;
if (!sessionId.IsNullOrEmpty()) exp &= _.SessionID == sessionId;
exp &= _.CreateTime.Between(start, end);
if (!key.IsNullOrEmpty()) exp &= _.Name.Contains(key) | _.SessionID.Contains(key) | _.Page.Contains(key) | _.Status.Contains(key) | _.CreateIP.Contains(key) | _.UpdateIP.Contains(key);

return FindAll(exp, page);
}
return FindAll(exp, page);
}

//// Select Count(ID) as ID,SessionID From UserOnline Where CreateTime>'2020-01-24 00:00:00' Group By SessionID Order By ID Desc limit 20
//private static readonly FieldCache<UserOnline> _SessionIDCache = new FieldCache<UserOnline>(nameof(SessionID))
//{
// //Where = _.CreateTime > DateTime.Today.AddDays(-30) & Expression.Empty
//};

///// <summary>获取会话列表，字段缓存10分钟，分组统计数据最多的前20种，用于魔方前台下拉选择</summary>
///// <returns></returns>
//public static IDictionary<String, String> GetSessionIDList() => _SessionIDCache.FindAllName();
#endregion

#region 业务操作
/// <summary>
/// 设置错误
/// </summary>
/// <param name="error"></param>
public void SetError(String error)
{
Status = error;
LastError = DateTime.Now;
//// Select Count(ID) as ID,SessionID From UserOnline Where CreateTime>'2020-01-24 00:00:00' Group By SessionID Order By ID Desc limit 20
//private static readonly FieldCache<UserOnline> _SessionIDCache = new FieldCache<UserOnline>(nameof(SessionID))
//{
// //Where = _.CreateTime > DateTime.Today.AddDays(-30) & Expression.Empty
//};

///// <summary>获取会话列表，字段缓存10分钟，分组统计数据最多的前20种，用于魔方前台下拉选择</summary>
///// <returns></returns>
//public static IDictionary<String, String> GetSessionIDList() => _SessionIDCache.FindAllName();
#endregion

#region 业务操作
/// <summary>
/// 设置错误
/// </summary>
/// <param name="error"></param>
public void SetError(String error)
{
Status = error;
LastError = DateTime.Now;

SaveAsync(3_000);
}
#endregion
SaveAsync(3_000);
}
#endregion
}
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