Java 为什么选择查询递增@Version

执行以下语句后，类应用程序的版本将递增

Queue queue = queueDao.fetchQueueByApplicationId(application.getApplicationId());

这只是一个简单的获取查询，它不应该以任何方式增加调用的版本。但在上线执行之后，应用程序类的版本意外增加

有人能帮忙吗 谢谢

Queue.java

@Entity
@Table(name = "queue")
@NamedQuery(name = "queueByApplicationId", query = "SELECT q from Queue q WHERE q.application.applicationId = ?")
public class Queue implements Serializable {
    private static final long serialVersionUID = 1L;

    @Id
    @GeneratedValue(strategy = IDENTITY)
    @Column(name = "queue_id", unique = true, nullable = false)
    private Long queueId;

    @Temporal(TemporalType.TIMESTAMP)
    @Column(name = "created", nullable = false, length = 19)
    private Date created;

    @Column(name = "created_by")
    private Long createdBy;

    @Temporal(TemporalType.TIMESTAMP)
    @Column(name = "updated", length = 19)
    private Date updated;

    @Column(name = "updated_by")
    private Long updatedBy;

    @Version
    @Column(name = "version", nullable = false)
    private Integer version;

    @ManyToOne(fetch = FetchType.LAZY)
    @JoinColumn(name = "application_id")
    private Application application;

    @OneToMany(fetch = FetchType.LAZY, mappedBy = "queue", cascade = { CascadeType.PERSIST, CascadeType.MERGE })
    private List<QueueAssignedToRole> queueAssignedToRoles;

    @OneToMany(fetch = FetchType.LAZY, mappedBy = "queue", cascade = { CascadeType.PERSIST, CascadeType.MERGE })
    private List<QueueAssignedUser> queueAssignedUsers;

    getter setter ....

}

ApplicationQueueDaoImpl.java

@Repository
public class ApplicationQueueDaoImpl extends AbstractDao<Queue> {

    private static final Logger LOGGER = LogManager.getLogger(ApplicationQueueDaoImpl.class);

    @Override
    public Queue fetchQueueByApplicationId(Long applicationId) {
        LOGGER.debug("Fetching Queue information for applicationId {}", applicationId);
        List<Queue> queues = executeNamedQuery("queueByApplicationId", Queue.class, applicationId);
        return CollectionUtils.isEmpty(queues) ? null : queues.get(0);
    }

}

@存储库
公共类应用程序QueueDaoImpl扩展了AbstractDao{
私有静态最终记录器Logger=LogManager.getLogger（ApplicationQueueDaoImpl.class）；
@凌驾
公共队列fetchQueueByApplicationId（长applicationId）{
debug（“获取applicationId{}，applicationId的队列信息）；
列表队列=executeNamedQuery（“queueByApplicationId”，Queue.class，applicationId）；
return CollectionUtils.isEmpty（queues）？null:queues.get（0）；
}
}

AbstractDao.java

protected <T> List<T> executeNamedQuery(String queryName, Class<T> resultType, Object... positionalParams) {
        TypedQuery<T> query = entityManager.createNamedQuery(queryName, resultType);
        DAOUtils.setPositionalParams(query, positionalParams);

        return query.getResultList();
    }

受保护列表executeNamedQuery（字符串queryName、类resultType、对象…位置参数）{
TypedQuery query=entityManager.createNamedQuery（queryName，resultType）；
setPositionParams（查询，位置参数）；
返回query.getResultList（）；
}

您如何知道您的查询正在增加版本？数据库中是否存在正在增加版本的触发器？是否有其他进程增加版本？您是否已通过代码对其进行调试？@Jim Garrison在调试时，将记录器放在获取查询之前和之后以捕获版本，在这条语句中才知道其递增，但这并没有回答他的前两个问题。转储SQL命令。没有触发器，哪些SQL命令是u r syng？请查看所选JPA提供程序的日志，了解它调用的SQL。这应该是调试与数据库对话的第一步

protected <T> List<T> executeNamedQuery(String queryName, Class<T> resultType, Object... positionalParams) {
        TypedQuery<T> query = entityManager.createNamedQuery(queryName, resultType);
        DAOUtils.setPositionalParams(query, positionalParams);

        return query.getResultList();
    }