Spring Boot Data JPA 查询不适用于 LocalDateTime.MAX

Question

我有方法：

@Query(value = "SELECT bs FROM BookedSlot bs WHERE bs.timeFrom >= :timeFrom AND bs.timeFrom < :timeTo")
Set<BookedSlot> test(@Param("timeFrom") LocalDateTime fromTime, @Param("timeTo") LocalDateTime timeTo);

还有两个测试

    @Sql(scripts = "/test-data.sql")
    @Test
    public void test1() {
        final Set<BookedSlot> res = unit.test(LocalDateTime.now(), LocalDateTime.MAX);
        assertNotNull(res);
        assertEquals(1, res.size());//fails
    }

    @Sql(scripts = "/test-data.sql")
    @Test
    public void test2() {
        final Set<BookedSlot> res = unit.test(LocalDateTime.now(), LocalDateTime.of(2050,1,1,1,1));
        assertNotNull(res);
        assertEquals(1, res.size());//ok
    }

还有test-data.sql

INSERT INTO booked_slots (id, created_at, updated_at, time_from, time_to, user_id, service_box_id)
VALUES (1, NOW(), NOW(), '2040-01-01 08:30:00.0', '2040-01-01 10:00:00.0', 1, 1);

test1 - 失败

test2 - 好的

BookedSlots.java

@Entity
@Table(name = "booked_slots")
public class BookedSlot extends DbEntity implements Comparable<BookedSlot> {

    @Column(name = "time_from")
    private LocalDateTime timeFrom;
    @Column(name = "time_to")
    private LocalDateTime timeTo;
}

数据库 h2（在 MySQL 5.7 上也是如此，我只是使用 H2 进行集成测试）

test.properties

spring.datasource.url=jdbc:h2:mem:myDb;DB_CLOSE_DELAY=-1;DB_CLOSE_ON_EXIT=FALSE;MODE=MySQL
spring.datasource.username=sa
spring.datasource.password=sa
spring.datasource.initialization-mode=always
spring.jpa.hibernate.ddl-auto=create-drop
spring.jpa.database-platform=org.hibernate.dialect.MySQL5InnoDBDialect

对此有什么想法吗？

Answer 1

支持的最大LocalDateTime 是999999999-12-31T23:59:59.999999999。数据库不支持那么远的未来日期。

MySQL range for DATETIME 的值是 1000-01-01 00:00:00.000000 到 9999-12-31 23:59:59.999999

---

hibernate-core: LiteralType::objectToSQLString 将值转换为字符串 表示，适合嵌入到 SQL 语句中作为 字面意思。

这里可以看到LocalDateTimeType::objectToSQLString方法

public class LocalDateTimeType
        extends AbstractSingleColumnStandardBasicType<LocalDateTime>
        implements VersionType<LocalDateTime>, LiteralType<LocalDateTime> {

    public static final DateTimeFormatter FORMATTER = DateTimeFormatter.ofPattern( "yyyy-MM-dd HH:mm:ss.S", Locale.ENGLISH );

    //...

    @Override
    public String objectToSQLString(LocalDateTime value, Dialect dialect) throws Exception {
        return "{ts '" + FORMATTER.format( value ) + "'}";
    }

    //..
}

对于LocalDateTime.MAX，它返回{ts '+999999999-12-31 23:59:59.9'}