spring 数据存储库查询包含集合

Question

我在使用 spring 数据 jpa 存储库执行自定义查询时遇到问题。

我有一个存储库 class 实现了 JPARepository<>。对于所有内置 CRUD 查询以及一些自定义查询，一切都按预期工作，但在内部集合之间进行限定不起作用，并且返回完整的结果集，就好像集合的限定不存在一样。

例如，这里有一个查询：

public interface MessageRepository extends JpaRepository<Message, Integer> {
@Query("SELECT a FROM Message a, Message_Topic b WHERE a.systemNm = :theSystem AND a. applicationNm = :theApplication AND b.topicNm = :theTopicName AND a.insertTs BETWEEN :theStartDate AND :theEndDate AND a.expirationDt > CURRENT_TIMESTAMP")
List<Message> findMessagesByTopic(@Param("theSystem") String theSystem,
        @Param("theApplication") String theApplication,
        @Param("theTopicName") String theTopicName,
        @Param("theStartDate") Date theStartDate,
        @Param("theEndDate") Date theEndDate);

具有以下 JPA 实体：

留言：

@Entity
public class Message implements Serializable {
private static final long serialVersionUID = 1L;

@Id
@Column(name="message_id")
private int messageId;

@Column(name="application_nm")
private String applicationNm;

@Column(name="execution_instance_txt")
private String executionInstanceTxt;

@Temporal(TemporalType.TIMESTAMP)
@Column(name="expiration_dt")
private Date expirationDt;

@Column(name="grouping_des")
private String groupingDes;

@Temporal(TemporalType.TIMESTAMP)
@Column(name="insert_ts")
private Date insertTs;

@Column(name="message_detail_txt")
private String messageDetailTxt;

@Column(name="message_summary_txt")
private String messageSummaryTxt;

@Column(name="severity_des")
private String severityDes;

@Column(name="system_nm")
private String systemNm;

//uni-directional many-to-one association to Message_Topic
@OneToMany(fetch=FetchType.EAGER)
@JoinColumn(name="message_id", referencedColumnName="message_id")
private Set<Message_Topic> messageTopics;

Message_Topic:

@Entity
public class Message_Topic implements Serializable {
private static final long serialVersionUID = 1L;

@Id
@Column(name="message_topic_id")
private int messageTopicId;

@Column(name="message_id", insertable=false, updatable=false)
private int messageId;

@Column(name="topic_nm")
private String topicNm;

@Column(name="topic_value_txt")
private String topicValueTxt;

Answer 1

这是您的查询：

SELECT a FROM Message a, Message_Topic b WHERE a.systemNm = :theSystem AND a. applicationNm = :theApplication AND b.topicNm = :theTopicName AND a.insertTs BETWEEN :theStartDate AND :theEndDate AND a.expirationDt > CURRENT_TIMESTAMP

Message 和 Message_Topic 连接在哪里？，如果将此查询转换为本机查询，则可能会检测到错误。

spring 数据存储库查询包含集合

spring data repository query included collection

java

spring

hibernate

jpa

spring-data