Spring Data Elasticsearch嵌套查询

Question

I am using Spring Data Elasticsearch support via jHipster, and am trying to learn a bit more about using search as it relates to extending some new relationships in my database.

I've got a new nested relationship with it's own index:

@Entity
@Table(name = "friends")
@Cache(usage = CacheConcurrencyStrategy.NONSTRICT_READ_WRITE)
@Document(indexName = "friend")
public class Friend {

    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    private Long id;

    @OneToOne
    @Field(type=FieldType.Nested, index=FieldIndex.analyzed, store=true)
    private User friend1;

    @OneToOne
    @Field(type=FieldType.Nested, index=FieldIndex.analyzed, store=true)
    private User friend2;

    public Long getId() {
        return id;
    }

    public void setId(Long id) {
        this.id = id;
    }

    public User getFriend1() {
        return friend1;
    }

    public void setFriend1(User friend1) {
        this.friend1 = friend1;
    }

    public User getFriend2() {
        return friend2;
    }

    public void setFriend2(User friend2) {
        this.friend2 = friend2;
    }

}

I want to filter the results to a specific user "friend1.id", and than search for matching details on the nested document?

     StreamSupport
        .stream(friendSearchRepository.search(
            QueryBuilders.boolQuery()               
.must(QueryBuilders.matchQuery("friend1.id",SecurityUtils.getCurrentUserId()))
            .must(QueryBuilders.matchQuery("friend2.login",query))).spliterator(), false)
            .collect(Collectors.toList());

This doesn't seem to return any results though?

Answer 1

To answer your question about how to search this, an Elasticsearch query can be constructed using QueryBuilders . For example, querySearchQuery can be combined with other types of queries using a boolQuery :

userSearchRepository.search( QueryBuilders.boolQuery() .must(queryStringQuery(query)) .must(termsQuery("firstName", "John")))

This will search for User s where the query matches and firstName is John .