客观化的文本搜索和区别

Question

想要在客观化中进行自由文本搜索并做到与众不同，我的情况是这样的：

1) NamedTrivialNew class:

        public class NamedTrivialNew implements Serializable {

            private String title;
            private String city;
            ...
        }

public class KeyWord  implements Serializable { 
    @Id
    public Long id; 
    @Parent
    public Key<NamedTrivialNew> reason;  

    public KeyWord(){       
    }

3）

Search filter class:



    NamedTrivialNew n = new NamedTrivialNew();
                n.setSomeString("search test");
                KeyWord hp = new KeyWord();
                hp.reason = Key.create(NamedTrivialNew.class, 123L);
                hp.id = 456L;

                Key<KeyWord> hpKey = ofy().save().entity(hp).now();
                ofy().clear();
                assert ofy().load().key(hpKey).now() != null;

  QueryResultIterator<KeyWord> NamedTrivialNew  = ofy().load().type(KeyWord.class).filter("keyword>=", "search").filter("keyword <=", "search\uFFFD").iterator();

我正在关注此示例：

https://groups.google.com/forum/#!topic/objectify-appengine/Uc6_f98Tuao

可导入的原因= ofy.query（Keyword.class）.filter（“keyword

  

=“，”basic“）。filter（”keyword＆lt; =“，”basic \ uFFFD“）。fetchParents（）;

没有方法：fetchParents（）;

我已尝试过以上样本，但它无效....