如何在Ehcache中使用Query？

Question

目前我正在使用EhCache来存储和检索记录。我已经在缓存中插入了一些元素值作为键值对。现在我的要求是通过匹配该缓存中的键来使用查询来获取值。我的代码如下：

public static void getResultsUsingQuery() throws Exception {
        try {
            Configuration cacheManagerConfig = new Configuration();
            CacheConfiguration cacheConfig = new CacheConfiguration("C5", 0).eternal(true);
            Searchable searchable = new Searchable();
            cacheConfig.addSearchable(searchable);
            CacheManager cacheManager = new CacheManager(cacheManagerConfig);
            cacheManager.addCache(new Cache(cacheConfig));
            Cache c4 = cacheManager.getCache("C5");
            Results results = c4.createQuery().addCriteria(Query.KEY.eq("Label_1")).includeKeys().execute();
            //Results results = c4.createQuery().addCriteria(Query.KEY.eq("C5_1")).includeValues().execute();
            for (Result result : results.all()) {
                System.out.println("" + result.getKey());
            }

            System.out.println(results.size());
        } catch (Exception ex) {
            System.out.println("Error While Executing Query");
        }
    } 

执行此程序时，我无法检索记录。我不知道我在程序中做错了什么。帮我看看结果。

Note : My cache name is "C5" and I have inserted the values as key pair like ["Label_1", "C5_1"],.....["Label_10","C5_10"]... Now I want to get the results as C5_1.. So I need to use the query like equating the key with "Label_1".