@SortableField沒有嵌套實體工作

Question

我的代碼具有類Credenciada從類Cadastro具有atributte（嵌套類）CEP類型的「CEP」繼承。 CEP類的分支「uf」爲字符串類型。

uf atributte使用@SortableField進行了註釋，因此索引使用「cep.uf」名稱進行保存。但是當我需要按「cep.uf」排序時，會拋出一個NullPointerException異常，因爲Hibernate搜索沒有找到這個索引/分支。

OBS：我看到類IndexedTypeDescriptorImpl的屬性「allFieldDescriptors」沒有「cep.uf」的併發性。因爲此方法的第139行在此處返回null「return allFieldDescriptors.get（fieldName）」。

Cadastro.java：

@Entity 
@Table(name = "CAD") 
@Inheritance(strategy = InheritanceType.JOINED) 
@Indexed 
public class Cadastro extends Entidade<Long> { 
    @Id 
    private Long codigo; 

    @IndexedEmbedded 
    @NotAudited 
    @ManyToOne 
    private CEP cep; 

    //more attrs and getters/setters here 
} 

Credenciada.java：

@Entity 
@Indexed 
@Table(name = "CAD_CRDC") 
@PrimaryKeyJoinColumn(name = "CD_CAD_CRDC") 
public class Credenciada extends Cadastro { 

    //many attrs and getters/setters here 

} 

CEP.java

@Entity 
@Table(name = "CAD_CEP", schema = "dne") 
public class CEP extends Entidade<Long> { 

    @Id 
    @Field(name = "cep", store = Store.YES) 
    private Long nrCep; 

    @SortableField 
    @Field(store = Store.YES) 
    private String uf; 

} 

搜索代碼：

FullTextEntityManager fullTextEntityManager = hibernateUtil.getFullTextEntityManager(); 

QueryBuilder qb = HibernateSearchUtil.createQueryBuilder(fullTextEntityManager, Credenciada.class);  

BooleanJunction<?> criterios = qb.bool(); 

//many conditions here... 

org.apache.lucene.search.Query rootQuery = criterios.isEmpty() ? new MatchAllDocsQuery() : criterios.createQuery(); 

FullTextQuery query = fullTextEntityManager.createFullTextQuery(rootQuery, Credenciada.class); 

query.setSort(qb.sort().byField("cep.uf").createSort()); 

List resultList = query.getResultList(); 

例外：

java.lang.NullPointerException 
    at org.hibernate.search.query.dsl.sort.impl.SortFieldStates.getCurrentSortFieldTypeFromMetamodel(SortFieldStates.java:156) 
    at org.hibernate.search.query.dsl.sort.impl.SortFieldStates.determineCurrentSortFieldTypeAutomaticaly(SortFieldStates.java:149) 
    at org.hibernate.search.query.dsl.sort.impl.ConnectedSortContext.byField(ConnectedSortContext.java:42) 
    at br.gov.sindec.modulos.credenciada.repositorio.impl.CredenciadaRepositorioImpl.criarQueryListarCredenciadasIndexadas(CredenciadaRepositorioImpl.java:124) 
    at br.gov.sindec.modulos.credenciada.repositorio.impl.CredenciadaRepositorioImpl.listarCredenciadasIndexadas(CredenciadaRepositorioImpl.java:52) 

Answer 1

Hibernate Search 5.6.1.Final and 5.7.0.Final have just been released;這兩個版本都包含針對您的問題的修補程序（HSEARCH-2587）。