我有顶级实体类：

@Entity
@Getter @Setter
@Table(name = "operation")
@Inheritance(strategy = InheritanceType.JOINED)
@EqualsAndHashCode(of = {"operationId"})
public abstract class Operation implements Serializable {
    public static final int OPERATION_ID_LENGTH = 20;

    @Id
    @Column(name = "operation_id",length = OPERATION_ID_LENGTH,nullable = false,columnDefinition = "char")
    private String operationId;

    @Column(name = "operation_type_code")
    @Getter(AccessLevel.NONE)
    @Setter(AccessLevel.NONE)
    private String operationTypeCode;

    @Temporal(TemporalType.TIMESTAMP)
    @Column(name = "begin_timestamp",nullable = false)
    private Date beginTimestamp = new Date();

    @Temporal(TemporalType.TIMESTAMP)
    @Column(name = "end_timestamp")
    private Date endTimestamp;

    @Column(name = "operation_number",length = 6,columnDefinition = "char")
    private String operationNumber;


    @Enumerated(EnumType.STRING)
    @Column(name = "operation_status",length = 32,nullable = false)
    private OperationStatus status;

    @ManyToOne(optional = false)
    @JoinColumn(name = "user_id")
    private User user;

    @ManyToOne
    @JoinColumn(name = "terminal_id")
    private Terminal terminal;


    @Column(name = "training_mode",nullable = false)
    private boolean trainingMode;
}

对于继承的类,我有相应的存储库：

public interface ConcreteOperationRepository extends JpaRepository<ConcreteOperation,String> {

    @Query("SELECT o FROM ConcreteOperation o WHERE o.beginTimestamp BETWEEN :from AND :to AND o.status = :status AND o.terminal.deviceId = :deviceId AND o.trainingMode = :trainingMode")
    Collection<ConcreteOperation> findOperations(@Param("from") Date startDay,@Param("to") Date endDay,@Param("status") OperationStatus status,@Param("deviceId") String deviceId,@Param("trainingMode") boolean trainingMode);
}

我用以下方法进行集成测试：

@Transactional
@Test
public void shouldFindOperationByPeriodAndStatusAndWorkstationId() {
    Date from = new Date(Calendar.getInstance().getTime().getTime());
    List<String> terminalIds = loadTerminalIds();
    List<OperationStatus> typeForUse = Arrays.asList(OperationStatus.COMPLETED,OperationStatus.LOCKED,OperationStatus.OPEN);
    int countRowsForEachType = 3;
    int id = 100001;
    for (String terminalId : terminalIds) {
        for (OperationStatus status : typeForUse) {
            for (int i = 0; i < countRowsForEachType; i++) {
                concreteOperationRepository.save(createConcreteOperation(status,terminalId,String.valueOf(++id)));
            }
        }
    }
    Date to = new Date(Calendar.getInstance().getTime().getTime());
    for (String terminalId : terminalIds) {
        for (OperationStatus status : typeForUse) {
            Collection<ConcreteOperation> operations =
                    concreteOperationRepository.findOperations(from,to,status,false);
            assertEquals(countRowsForEachType,operations.size());
        }
    }
}

但是由于结果为空而我使用MysqL数据库时此测试失败(但是当我切换到HsqlDB时通过)

此外,如果我在测试开始时将延迟“Thread.sleep(1000)”延迟一秒,就在第一行之后,则此测试通过.

当我从Hibernate日志执行sql时,它给了我正确的结果.我的代码出了什么问题？