Question

我正在尝试使用Ardalis示例http://ardalis.com/introducing-the-cachedrepository-pattern

构建缓存类

我收到的错误是它没有参数。我可以弄清楚如何通过顶部。

该类的缓存部分没有错误，基类工作

我在资源库类的顶部做错了什么。我如何继承错误。

感谢您的帮助。

带有问题的

存储库类

   public class TweetSearchCache : TweetSearch  
  {
   // SingleUserAuthorizer auth;

    public TweetSearchCache() : base //(SingleUserAuthorizer auth) 
    {



    }

    private static readonly object CacheLockObject = new object();
    public override List<Search>  GetTweets()
   {

        string cacheKey = "GetSearch";



        var result = HttpRuntime.Cache[cacheKey] as List<Search>;

        if (result == null)
        {
            lock (CacheLockObject)
            {
                result = HttpRuntime.Cache[cacheKey] as List<Search>;

                if (result == null)
                {

                    result = base.GetTweets().ToList();                                            

                    HttpRuntime.Cache.Insert(cacheKey, result, null,

                  DateTime.Now.AddMinutes(2), TimeSpan.Zero);

                }

            }
        }


        return result;



    }

  }

基类

    public class TweetSearch
    {
     private readonly SingleUserAuthorizer _auth;

      public TweetSearch(SingleUserAuthorizer auth)
    {
        _auth = auth;
    }


    public virtual List<Search> GetTweets()
    {
        string hashTerm = "#searchterm";

        string rejectedWords = "Searchterm";


        using (var twitterCtx = new TwitterContext(_auth))
        {
            var queryResults = (from search in twitterCtx.Search
                                where search.Type == SearchType.Search &&
                                      search.Hashtag == hashTerm ||
                                    //   search.Query == twitQuery ||
                                    //   search.WordPhrase == twitPhrase ||
                                      search.WordNot == rejectedWords &&

                                      search.ShowUser == true &&
                                      search.IncludeEntities == true &&
                                      search.Locale == "EN" &&
                                       search.PageSize == 100
                                select search).ToList();

            return queryResults;//.ToList();
        }



    }

Answer 1

您应该阅读有关基本C＃语法的更多信息。参数可以来自派生构造函数中的参数，也可以使用静态字段，属性或方法来构建它。第一个示例显示了派生构造函数的基本参数。第二个例子显示了静态方法的使用。

public TweetSearchCache(SingleUserAuthorizer auth) : base(auth) {
// ...
}

或者

public TweetSearchCache() : base(CreateAuth()) {
// ...
}

public static SingleUserAuthorizer CreateAuth() {
    SingleUserAuthorizer createdAuth = ...
    // ...
    return createdAuth;
}

使用缓存类设置我的基类

1 个答案: