[infinispan-issues] [JBoss JIRA] (ISPN-2821) CacheQuery sort() sorts entries in reverse order when cache values are updated

[Anna Manukyan (JIRA)]

Anna Manukyan created ISPN-2821:
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             Summary: CacheQuery sort() sorts entries in reverse order when cache values are updated 
                 Key: ISPN-2821
                 URL: https://issues.jboss.org/browse/ISPN-2821
             Project: Infinispan
          Issue Type: Bug
          Components: Querying
    Affects Versions: 5.2.1, 5.2.0.Final
            Reporter: Anna Manukyan
            Assignee: Sanne Grinovero


While test development for the Query module, I've noticed some strange behaviour, which I couldn't explain anyhow. 

The case is the following:

3 new objects type of Person are created and put to the cache. The age parameter is set for all these objects. 

Then the age is changed for them (set to other values), and query is run using sort by age. 
The thing is that even though the sort is descending by default for integers, but the returned result list is sorted in ascending order. 

The code is:

{code}
      Person person2 = new Person();
      person2.setAge(30);
      //some other setters

      Person person3 = new Person();
      person3.setAge(25);
      // some other setters

      cache.put("key1", person2);
      cache.put("key2", person3);

      person2.setAge(35);
      person3.setAge(12);

      Sort sort = new Sort( new SortField("age", SortField.STRING)); //<--- The same happens for SortField.INT

      queryParser = createQueryParser("name");

      Query luceneQuery = queryParser.parse("Goat");
      CacheQuery cacheQuery = Search.getSearchManager(cache).getQuery(luceneQuery);
      cacheQuery.sort(sort);
      List<Object> found = cacheQuery.list();
      assert found.size() == 2;

      assert found.get(0).equals(person2);   //<------ The first element should be the one with higher age, but in reality in the first place it is person3
      assert found.get(1).equals(person3);
{code}

You can find attached the test file itself.

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