Mybatis 不会回滚序列

Question

我在使用 Spring Boot + My Batis Spring Boot 创建测试时遇到问题我为我的映射器创建了几个 U.Test。对于插入，我使用 @SelectKey 注释来获取序列的下一个值。当 Spring 回滚时，事务不会回滚序列，它会在每次应用程序启动时递增它。

FE。

@RunWith(SpringRunner.class)
@ActiveProfiles(profiles = "local")
@SpringBootTest
@Slf4j
@Transactional
public class MultimediaMapperTest {

    @Autowired
    private MultimediaMapper multimediaMapper;

    @Autowired
    private IEmpresasService empresasService;



    @Test
    public void insertArchivo() {
        Multimedia archivo = Multimedia.builder()
                .tiposEntidad(TiposEntidad.EMP)
                .idEntidad(1)
                .awsKey("KEY_AMAZON_WEB_SERVICES")
                .nomFichero("fichero.txt")
                .mime("application/pdf")
                .observaciones("prueba observaciones")
                .build();

        multimediaMapper.insertArchivos(archivo);
        log.debug("Fin de la inserción de {}", archivo);
        assertThat(archivo.getIdArchivo(), is(notNullValue()));

    }

日志：

第一次开始：


[INFO ] 2018-04-23 21:44:16,369 [] o.s.c.s.DefaultLifecycleProcessor - Starting beans in phase 2147483647
[INFO ] 2018-04-23 21:44:16,369 [] s.d.s.w.p.DocumentationPluginsBootstrapper - Context refreshed
[INFO ] 2018-04-23 21:44:16,396 [] s.d.s.w.p.DocumentationPluginsBootstrapper - Found 1 custom documentation plugin(s)
[INFO ] 2018-04-23 21:44:16,470 [] s.d.s.w.s.ApiListingReferenceScanner - Scanning for api listing references
[INFO ] 2018-04-23 21:44:16,880 [] e.g.m.a.d.MultimediaMapperTest - Started MultimediaMapperTest in 7.035 seconds (JVM running for 8.255)
[INFO ] 2018-04-23 21:44:18,600 [] o.s.t.c.t.TransactionContext - Began transaction (1) for test context [DefaultTestContext@40d10264 testClass = MultimediaMapperTest, testInstance = es.gogroup.module.archivos.dao.MultimediaMapperTest@6edd4fe2, testMethod = insertArchivo@MultimediaMapperTest, testException = [null], mergedContextConfiguration = [WebMergedContextConfiguration@2773504f testClass = MultimediaMapperTest, locations = '{}', classes = '{class es.gogroup.PanchoApplication}', contextInitializerClasses = '[]', activeProfiles = '{local}', propertySourceLocations = '{}', propertySourceProperties = '{org.springframework.boot.test.context.SpringBootTestContextBootstrapper=true}', contextCustomizers = set[org.springframework.boot.test.context.SpringBootTestContextCustomizer@2a798d51, org.springframework.boot.test.context.filter.ExcludeFilterContextCustomizer@37afeb11, org.springframework.boot.test.json.DuplicateJsonObjectContextCustomizerFactory$DuplicateJsonObjectContextCustomizer@245b4bdc, org.springframework.boot.test.mock.mockito.MockitoContextCustomizer@0, org.springframework.boot.test.autoconfigure.properties.PropertyMappingContextCustomizer@0, org.springframework.boot.test.autoconfigure.web.servlet.WebDriverContextCustomizerFactory$Customizer@1b7cc17c], resourceBasePath = 'src/main/webapp', contextLoader = 'org.springframework.boot.test.context.SpringBootContextLoader', parent = [null]]]; transaction manager [org.springframework.jdbc.datasource.DataSourceTransactionManager@cfb94fd]; rollback [true]
[DEBUG] 2018-04-23 21:44:18,662 [] e.g.m.m.d.M.insertArchivos!selectKey - ==>  Preparing: SELECT pg_catalog.nextval('"SEQ_MULTIMEDIA"'); 
[DEBUG] 2018-04-23 21:44:18,689 [] e.g.m.m.d.M.insertArchivos!selectKey - ==> Parameters: 
[DEBUG] 2018-04-23 21:44:18,759 [] e.g.m.m.d.M.insertArchivos!selectKey -   Preparing: INSERT INTO MULTIMEDIA(ID_ARCHIVO,TIPO_ENTIDAD, ID_ENTIDAD,AWS_KEY, NOM_FICHERO, OBSERVACIONES, MIME) VALUES (?,?,?,?, ?, ?, ?) 
[DEBUG] 2018-04-23 21:44:18,767 [] e.g.m.m.d.M.insertArchivos - ==> Parameters: 15(Integer), EMP(String), 1(Integer), KEY_AMAZON_WEB_SERVICES(String), fichero.txt(String), prueba observaciones(String), application/pdf(String)
[DEBUG] 2018-04-23 21:44:18,803 [] e.g.m.m.d.M.insertArchivos -

下一站：


[INFO ] 2018-04-23 21:58:15,778 [] o.s.t.c.t.TransactionContext - Began transaction (1) for test context [DefaultTestContext@40d10264 testClass = MultimediaMapperTest, testInstance = es.gogroup.module.archivos.dao.MultimediaMapperTest@6edd4fe2, testMethod = insertArchivo@MultimediaMapperTest, testException = [null], mergedContextConfiguration = [WebMergedContextConfiguration@2773504f testClass = MultimediaMapperTest, locations = '{}', classes = '{class es.gogroup.PanchoApplication}', contextInitializerClasses = '[]', activeProfiles = '{local}', propertySourceLocations = '{}', propertySourceProperties = '{org.springframework.boot.test.context.SpringBootTestContextBootstrapper=true}', contextCustomizers = set[org.springframework.boot.test.context.SpringBootTestContextCustomizer@2a798d51, org.springframework.boot.test.context.filter.ExcludeFilterContextCustomizer@37afeb11, org.springframework.boot.test.json.DuplicateJsonObjectContextCustomizerFactory$DuplicateJsonObjectContextCustomizer@245b4bdc, org.springframework.boot.test.mock.mockito.MockitoContextCustomizer@0, org.springframework.boot.test.autoconfigure.properties.PropertyMappingContextCustomizer@0, org.springframework.boot.test.autoconfigure.web.servlet.WebDriverContextCustomizerFactory$Customizer@1b7cc17c], resourceBasePath = 'src/main/webapp', contextLoader = 'org.springframework.boot.test.context.SpringBootContextLoader', parent = [null]]]; transaction manager [org.springframework.jdbc.datasource.DataSourceTransactionManager@cfb94fd]; rollback [true]
[DEBUG] 2018-04-23 21:58:15,856 [] e.g.m.m.d.M.insertArchivos!selectKey - ==>  Preparing: SELECT pg_catalog.nextval('"SEQ_MULTIMEDIA"'); 
[DEBUG] 2018-04-23 21:58:15,888 [] e.g.m.m.d.M.insertArchivos!selectKey - ==> Parameters: 
[DEBUG] 2018-04-23 21:58:15,954 [] e.g.m.m.d.M.insertArchivos!selectKey -   Preparing: INSERT INTO MULTIMEDIA(ID_ARCHIVO,TIPO_ENTIDAD, ID_ENTIDAD,AWS_KEY, NOM_FICHERO, OBSERVACIONES, MIME) VALUES (?,?,?,?, ?, ?, ?) 
[DEBUG] 2018-04-23 21:58:15,964 [] e.g.m.m.d.M.insertArchivos - ==> Parameters: 16(Integer), EMP(String), 1(Integer), KEY_AMAZON_WEB_SERVICES(String), fichero.txt(String), prueba observaciones(String), application/pdf(String)
[DEBUG] 2018-04-23 21:58:16,001 [] e.g.m.m.d.M.insertArchivos -

Answer 1

无法回滚数据库序列。这是一个特性，而不是一个错误。 :)

PostgreSQL:

Important: To avoid blocking concurrent transactions that obtain numbers from the same sequence, a nextval operation is never rolled back; that is, once a value has been fetched it is considered used, even if the transaction that did the nextval later aborts. This means that aborted transactions might leave unused "holes" in the sequence of assigned values.

Oracle:

Once a sequence number is generated, the sequence number is available only to the session that generated the number. Independent of transactions committing or rolling back, other users referencing order_seq.NEXTVAL obtain unique values. If two users are accessing the same sequence concurrently, then the sequence numbers each user receives might have gaps because sequence numbers are also being generated by the other user.

SQL Server:

Sequence numbers are generated outside the scope of the current transaction. They are consumed whether the transaction using the sequence number is committed or rolled back.

Mybatis 不会回滚序列

Mybatis doesn't Roll Back Sequences

spring

spring-boot

jdbc

mybatis

spring-mybatis