Question

我正在解决Spring JPA关于排序和分页的问题。目前我收到此警告：

WARN [NamedQuery] (NamedQuery.java:65) - Finder method public abstract     org.springframework.data.domain.Page loc.starterkit.business.entities.application.repository.ApplicationRepository.findByNameLike(java.lang.String,org.springframework.data.domain.Pageable) 
is backed by a NamedQuery but contains a Pageable parameter! Sorting delivered via this Pageable will not be applied!

我的JPA界面代码如下所示：

public interface ApplicationRepository extends PagingAndSortingRepository<Application,Long>{

Page<Application> findByNameLike(String name, Pageable pageable);

}

我的实体工厂配置：

<bean id="entityManagerFactory"
    class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
    <property name="dataSource" ref="dataSource"/>
    <property name="persistenceProviderClass" value="org.hibernate.ejb.HibernatePersistence"/>
    <property name="packagesToScan" value="loc.starterkit.business"/>
    <property name="jpaVendorAdapter">
        <bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter" />
    </property>
    <property name="persistenceUnitName" value="general" />
    <property name="jpaProperties">
      <props>
        <prop key="hibernate.dialect">${hibernate.dialect}</prop>
        <prop key="hibernate.connection.charSet">${hibernate.connection.charSet}</prop>
        <prop key="hibernate.show_sql">${hibernate.show_sql}</prop>
        <prop key="hibernate.format_sql">${hibernate.format_sql}</prop>
        <prop key="hibernate.use_sql_comments">${hibernate.use_sql_comments}</prop>
        <prop key="hibernate.jdbc.batch_size">${hibernate.jdbc.batch_size}</prop>
        <prop key="hibernate.cache.use_query_cache">${hibernate.cache.use_query_cache}</prop>
        <prop key="hibernate.cache.region.factory_class">${hibernate.cache.region.factory_class}</prop>
      </props>
    </property>
</bean>

我不知道为什么在这种情况下我不能在可分页方法中使用排序。有什么想法吗？

编辑：

我的申请实体

@Entity
@Table(name="APPLICATION")
public class Application {

@Id
@Column(name="ID")
@GeneratedValue(strategy = GenerationType.AUTO)
private Integer id;

@Column(name="NAME")
private String name;

@Column(name="DESCRIPTION")
private String description;

public Application() {
    super();
}

.... (getters and setters here)

}

将PagingAndSortingRepository更改为JPARepository似乎会抛出相同的警告。但经过一些测试后，我发现这个WARN没有任何意义。事情似乎很有效：

Hibernate: 
/* select
    count(*) 
from
    Application as generatedAlias0 
where
    generatedAlias0.name like :param0 */ select
        count(*) as col_0_0_ 
    from
        APPLICATION applicatio0_ 
    where
        applicatio0_.NAME like ?
Hibernate: 
/* select
    generatedAlias0 
from
    Application as generatedAlias0 
where
    generatedAlias0.name like :param0 
order by
    generatedAlias0.name asc */ select
        applicatio0_.ID as ID0_,
        applicatio0_.DESCRIPTION as DESCRIPT2_0_,
        applicatio0_.NAME as NAME0_ 
    from
        APPLICATION applicatio0_ 
    where
        applicatio0_.NAME like ? 
    order by
        applicatio0_.NAME asc limit ?

所以我认为这个WARN意味着什么，但我想知道它为什么被发布

Spring JPA的可分页排序问题

0 个答案: