StackExchange.Redis幫助類解決方案RedisRepository封裝（散列Hash類型數據操做）

時間 2019-12-08

標籤 stackexchange.redis stackexchange redis 幫助解決方案 redisrepository 封裝散列 hash 類型數據欄目 Redis 简体版

原文原文鏈接

本文版權歸博客園和做者本人共同全部，轉載和爬蟲請註明本系列分享地址：http://www.cnblogs.com/tdws/p/5815735.htmlhtml

上一篇文章的不合理之處，已經有所修改。json

今天分享的是Hash散列數據類型操做，不過我也以爲有了前兩篇的基礎搭建後，你就能本身按照StackExchange中所封裝的方法，進行調用並再次封裝。在實際項目中，有些方法可能並不須要，好比獲取全部Field以及其Value。當真正封裝成dll的時候，有些方法，咱們能夠在接口中禁用，在非用不可時，咱們能夠將其開放。spa

先上接口代碼吧：若是有朋友但願從頭看起，請進入第一章分享連接 http://www.cnblogs.com/tdws/p/5815735.htmlcode

 1 #region Redis Hash散列數據類型操做
 2 
 3         /// <summary>
 4         /// Redis散列數據類型  批量新增
 5         /// </summary>
 6         void HashSet(string key, List<HashEntry> hashEntrys, CommandFlags flags = CommandFlags.None);
 7 
 8         /// <summary>
 9         /// Redis散列數據類型  新增一個
10         /// </summary>
11         /// <param name="key"></param>
12         /// <param name="field"></param>
13         /// <param name="val"></param>
14         void HashSet<T>(string key, string field, T val, When when = When.Always, CommandFlags flags = CommandFlags.None);
15 
16         /// <summary>
17         ///  Redis散列數據類型 獲取指定key的指定field
18         /// </summary>
19         /// <param name="key"></param>
20         /// <param name="field"></param>
21         /// <returns></returns>
22         T HashGet<T>(string key, string field);
23 
24         /// <summary>
25         ///  Redis散列數據類型 獲取全部field全部值,以 HashEntry[]形式返回
26         /// </summary>
27         /// <param name="key"></param>
28         /// <param name="flags"></param>
29         /// <returns></returns>
30         HashEntry[] HashGetAll(string key, CommandFlags flags = CommandFlags.None);
31 
32         /// <summary>
33         /// Redis散列數據類型 獲取key中全部field的值。
34         /// </summary>
35         /// <typeparam name="T"></typeparam>
36         /// <param name="key"></param>
37         /// <param name="flags"></param>
38         /// <returns></returns>
39         List<T> HashGetAllValues<T>(string key, CommandFlags flags = CommandFlags.None);
40 
41         /// <summary>
42         /// Redis散列數據類型 獲取全部Key名稱
43         /// </summary>
44         /// <param name="key"></param>
45         /// <param name="flags"></param>
46         /// <returns></returns>
47         string[] HashGetAllKeys(string key, CommandFlags flags = CommandFlags.None);
48 
49         /// <summary>
50         ///  Redis散列數據類型  單個刪除field
51         /// </summary>
52         /// <param name="key"></param>
53         /// <param name="hashField"></param>
54         /// <param name="flags"></param>
55         /// <returns></returns>
56         bool HashDelete(string key, string hashField, CommandFlags flags = CommandFlags.None);
57 
58         /// <summary>
59         ///  Redis散列數據類型  批量刪除field
60         /// </summary>
61         /// <param name="key"></param>
62         /// <param name="hashFields"></param>
63         /// <param name="flags"></param>
64         /// <returns></returns>
65         long HashDelete(string key, string[] hashFields, CommandFlags flags = CommandFlags.None);
66 
67         /// <summary>
68         ///  Redis散列數據類型 判斷指定鍵中是否存在此field
69         /// </summary>
70         /// <param name="key"></param>
71         /// <param name="field"></param>
72         /// <param name="flags"></param>
73         /// <returns></returns>
74         bool HashExists(string key, string field, CommandFlags flags = CommandFlags.None);
75 
76         /// <summary>
77         /// Redis散列數據類型  獲取指定key中field數量
78         /// </summary>
79         /// <param name="key"></param>
80         /// <param name="flags"></param>
81         /// <returns></returns>
82         long HashLength(string key, CommandFlags flags = CommandFlags.None);
83 
84         /// <summary>
85         /// Redis散列數據類型  爲key中指定field增長incrVal值
86         /// </summary>
87         /// <param name="key"></param>
88         /// <param name="field"></param>
89         /// <param name="incrVal"></param>
90         /// <param name="flags"></param>
91         /// <returns></returns>
92         double HashIncrement(string key, string field, double incrVal, CommandFlags flags = CommandFlags.None);
93 
94 
95         #endregion

下面是實現的代碼，其實就是簡單調用下dll爲咱們提供好的方法。htm

  1  #region Redis Hash散列數據類型操做
  2         /// <summary>
  3         /// Redis散列數據類型  批量新增
  4         /// </summary>
  5         public void HashSet(string key, List<HashEntry> hashEntrys, CommandFlags flags = CommandFlags.None)
  6         {
  7             _db.HashSet(key, hashEntrys.ToArray(), flags);
  8         }
  9         /// <summary>
 10         /// Redis散列數據類型  新增一個
 11         /// </summary>
 12         /// <param name="key"></param>
 13         /// <param name="field"></param>
 14         /// <param name="val"></param>
 15         public void HashSet<T>(string key, string field, T val, When when = When.Always, CommandFlags flags = CommandFlags.None)
 16         {
 17             _db.HashSet(key, field, SerializeContent(val), when, flags);
 18         }
 19         /// <summary>
 20         ///  Redis散列數據類型 獲取指定key的指定field
 21         /// </summary>
 22         /// <param name="key"></param>
 23         /// <param name="field"></param>
 24         /// <returns></returns>
 25         public T HashGet<T>(string key, string field)
 26         {
 27             return DeserializeContent<T>(_db.HashGet(key, field));
 28         }
 29         /// <summary>
 30         ///  Redis散列數據類型 獲取全部field全部值,以 HashEntry[]形式返回
 31         /// </summary>
 32         /// <param name="key"></param>
 33         /// <param name="flags"></param>
 34         /// <returns></returns>
 35         public HashEntry[] HashGetAll(string key, CommandFlags flags = CommandFlags.None)
 36         {
 37             return _db.HashGetAll(key,flags);
 38         }
 39         /// <summary>
 40         /// Redis散列數據類型 獲取key中全部field的值。
 41         /// </summary>
 42         /// <typeparam name="T"></typeparam>
 43         /// <param name="key"></param>
 44         /// <param name="flags"></param>
 45         /// <returns></returns>
 46         public List<T> HashGetAllValues<T>(string key, CommandFlags flags = CommandFlags.None)
 47         {
 48             List<T> list = new List<T>();
 49             var hashVals = _db.HashValues(key, flags).ToArray();
 50             foreach (var item in hashVals)
 51             {
 52                 list.Add(DeserializeContent<T>(item));
 53             }
 54             return list;
 55         }
 56 
 57         /// <summary>
 58         /// Redis散列數據類型 獲取全部Key名稱
 59         /// </summary>
 60         /// <param name="key"></param>
 61         /// <param name="flags"></param>
 62         /// <returns></returns>
 63         public string[] HashGetAllKeys(string key, CommandFlags flags = CommandFlags.None)
 64         {
 65             return _db.HashKeys(key, flags).ToStringArray();
 66         }
 67         /// <summary>
 68         ///  Redis散列數據類型  單個刪除field
 69         /// </summary>
 70         /// <param name="key"></param>
 71         /// <param name="hashField"></param>
 72         /// <param name="flags"></param>
 73         /// <returns></returns>
 74         public bool HashDelete(string key,string hashField, CommandFlags flags = CommandFlags.None)
 75         {
 76             return _db.HashDelete(key, hashField,flags);
 77         }
 78         /// <summary>
 79         ///  Redis散列數據類型  批量刪除field
 80         /// </summary>
 81         /// <param name="key"></param>
 82         /// <param name="hashFields"></param>
 83         /// <param name="flags"></param>
 84         /// <returns></returns>
 85         public long HashDelete(string key, string[] hashFields, CommandFlags flags = CommandFlags.None)
 86         {
 87             List<RedisValue> list = new List<RedisValue>();
 88             for(int i = 0; i < hashFields.Length; i++)
 89             {
 90                 list.Add(hashFields[i]);
 91             }
 92             return _db.HashDelete(key, list.ToArray(), flags);
 93         }
 94         /// <summary>
 95         ///  Redis散列數據類型 判斷指定鍵中是否存在此field
 96         /// </summary>
 97         /// <param name="key"></param>
 98         /// <param name="field"></param>
 99         /// <param name="flags"></param>
100         /// <returns></returns>
101         public bool HashExists(string key,string field, CommandFlags flags = CommandFlags.None)
102         {
103             return _db.HashExists(key, field, flags);
104         }
105         /// <summary>
106         /// Redis散列數據類型  獲取指定key中field數量
107         /// </summary>
108         /// <param name="key"></param>
109         /// <param name="flags"></param>
110         /// <returns></returns>
111         public long HashLength(string key, CommandFlags flags = CommandFlags.None)
112         {
113             return _db.HashLength(key, flags);
114         }
115         /// <summary>
116         /// Redis散列數據類型  爲key中指定field增長incrVal值
117         /// </summary>
118         /// <param name="key"></param>
119         /// <param name="field"></param>
120         /// <param name="incrVal"></param>
121         /// <param name="flags"></param>
122         /// <returns></returns>
123         public double HashIncrement(string key,string field,double incrVal, CommandFlags flags = CommandFlags.None)
124         {
125             return _db.HashIncrement(key, field, incrVal, flags);
126         }
127  #endregion

另外，當你須要批量對Hash中增長數據的時候，若是你增長一個Person對象。他擁有姓名，年齡，性別等屬性，你想將他存在一個三列當中，並將屬性名稱做爲field名稱時，你可使用以下方法。對象

/// <summary>
        /// 複雜類的對象 轉化爲List<HashEntry>  此方法不支持List等對象，需另外封裝
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="key"></param>
        /// <param name="obj"></param>
        /// <returns></returns>
        public List<HashEntry> ObjectToHashEntryList<T>(string key, T obj) where T : class, new()
        {
            var people = new People() { Name = "ws", Age = 18 };
            List<HashEntry> list = new List<HashEntry>();
            foreach (PropertyInfo p in obj.GetType().GetProperties())
            {
                var name = p.Name.ToString();
                var val = p.GetValue(obj);
                list.Add(new HashEntry(name, SerializeContent(val)));
            }
            HashSet(key, list);
            return list;
        }

可是若是你想將一個List<T>存入hash中的話，field名稱還挺很差爲你取的。blog

有了下面的地方法，你能夠經過你傳入的一個方法，這個方法用於根據item定義field名稱。接口

         /// <summary>
        /// Hash中存儲一個集合
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="key"></param>
        /// <param name="list"></param>
        /// <param name="ModelIdentity"></param>
        public static void HashSet<T>(string key, List<T> list,Func<T, string> ModelIdentity)
        {
            List<HashEntry> list = new List<HashEntry>();
            foreach (var item in list)
            {
                string json = SerializeContent(item);
                list.Add(new HashEntry(ModelIdentity(item), json));
            }
            db.HashSet(key, list.ToArray());
        }