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StackExchange.Redis帮助类解决方案RedisRepository封装(散列Hash类型数据操作)

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上一篇文章的不合理之处,已经有所修改。

今天分享的是Hash散列数据类型操作,不过我也觉得有了前两篇的基础搭建后,你就能自己按照StackExchange中所封装的方法,进行调用并再次封装。在实际项目中,有些方法可能并不需要,比如获取所有Field以及其Value。当真正封装成dll的时候,有些方法,我们可以在接口中禁用,在非用不可时,我们可以将其开放。

先上接口代码吧:如果有朋友希望从头看起,请进入第一章分享链接 http://www.cnblogs.com/tdws/p/5815735.html

 1 #region Redis Hash散列数据类型操作
 2 
 3         /// <summary>
 4         /// Redis散列数据类型  批量新增
 5         /// </summary>
 6         void HashSet(string key, List<HashEntry> hashEntrys, CommandFlags flags = CommandFlags.None);
 7 
 8         /// <summary>
 9         /// Redis散列数据类型  新增一个
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散列数据类型 获取指定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散列数据类型 获取所有field所有值,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散列数据类型 获取key中所有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散列数据类型 获取所有Key名称
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散列数据类型  单个删除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散列数据类型  批量删除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散列数据类型 判断指定键中是否存在此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散列数据类型  获取指定key中field数量
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散列数据类型  为key中指定field增加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

下面是实现的代码,其实就是简单调用下dll为我们提供好的方法。

  1  #region Redis Hash散列数据类型操作
  2         /// <summary>
  3         /// Redis散列数据类型  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散列数据类型  新增一个
 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散列数据类型 获取指定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散列数据类型 获取所有field所有值,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散列数据类型 获取key中所有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散列数据类型 获取所有Key名称
 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散列数据类型  单个删除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散列数据类型  批量删除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散列数据类型 判断指定键中是否存在此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散列数据类型  获取指定key中field数量
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散列数据类型  为key中指定field增加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,当你需要批量对Hash中增加数据的时候,如果你增加一个Person对象。他拥有姓名,年龄,性别等属性,你想将他存在一个三列当中,并将属性名称作为field名称时,你可以使用如下方法。

/// <summary>
        /// 复杂类的对象 转化为List<HashEntry>  此方法不支持List等对象,需另外封装
        /// </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;
        }

但是如果你想将一个List<T>存入hash中的话,field名称还挺不好为你取的。

有了下面的地方法,你可以通过你传入的一个方法,这个方法用于根据item定义field名称。

         /// <summary>
        /// Hash中存储一个集合
/// </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()); }

 针对如上两种方法,获取hashGet方法也可以跟着改变,需要反序列化成泛型T类型的对象哟。

一直在用别人的RedisHelper, 自己封装的可能会有些问题,分享出来也真诚欢迎大家来给出指导,我将会进一步改进。

 

posted @ 2016-08-30 22:40  坦荡  阅读(5384)  评论(5编辑  收藏  举报