Spring Pageable does not translate @Column name

问题

I have Entity object :

@Entity(name = "table")
public class SomeEntity {

    @Id
    @Column(name = "id_column_name")
    public final BigDecimal entityId;

    @Column(name = "table_column_name")
    public final String entityFieldName;

}

And I have database view defined like this:

CREATE OR REPLACE FORCE EDITIONABLE VIEW "V_TABLE" ("ID_COLUMN_NAME", "TABLE_COLUMN_NAME", "SOME_OTHER_COLUMN") AS ... (some SQL magic)

And I have repository with custom query:

@RepositoryRestResource
interface SomeEntityRepository extends PagingAndSortingRepository<SomeEntity, BigDecimal> {

    @Query(value = "select id_column_name, table_column_name FROM V_TABLE where some_other_column = ?#{#parameter} order by ?#{#pageable}",
        countQuery = "SELECT count(*) from V_TABLE v where  some_other_column = ?#{#parameter}",
        nativeQuery = true)
    Page<SomeEntity> findBySomeParameter(@Param("parameter") long parameter, Pageable pageable);
}

Everything works fine when I request standard data with url: http://localhost:8080/someEntity/search/findBySomeParameter?parameter=25&page=0&size=20

But when I add sorting information it doesn't work: http://localhost:8080/someEntity/search/findBySomeParameter?parameter=25&page=0&size=20&sort=entityFieldName,asc will throw following exception (I'm using Oracle database):

Caused by: java.sql.SQLSyntaxErrorException: ORA-00904: "ENTITYFIELDNAME": invalid identifier

It seems like sorting field are not translated with @Column(name), but are inlined into SQL query.

Is there any way to make pageable sort translated, so that it will use not field name but column name?

回答1:

This article sheds light on the issue. Read from section 3.1 on.

Apparently dynamic sorting is not supported for native queries. Actually, if you change your findBySomeParameter method to take a Sort instead of a Pageable you will get org.springframework.data.jpa.repository.query.InvalidJpaQueryMethodException: Cannot use native queries with dynamic sorting.

Using pageable you don't get the exception, and pagination actually seems to work fine, but dynamic sorting does not substitute the column name as you found. Looks to me like the only solution is to use JPQL instead of native query, which is not a problem as long as the query you need to make is the one you provide. You would need to map the view though to a SomeEntityView class in order to use JPQL.

EDIT I thought the issue was not documented but it actually is here in the official doc

Spring Data JPA does not currently support dynamic sorting for native queries, because it would have to manipulate the actual query declared, which it cannot do reliably for native SQL. You can, however, use native queries for pagination by specifying the count query yourself, as shown in the following example:

来源：https://stackoverflow.com/questions/51459684/spring-pageable-does-not-translate-column-name

标签

java

spring-boot

spring-data-jpa

spring-rest