Question

为什么即使我将isCaptain指定为transient，春季数据仍在查看transient？从文档中，应忽略Boolean属性。如果我使用org.springframework.data.mapping.model.MappingException: Setting property isCaptain to null on Player [nodeId=1, name=null, firstName=null, lastName=null] at org.springframework.data.neo4j.support.mapping.SourceStateTransmitter.setProperty(SourceStateTransmitter.java:85) at org.springframework.data.neo4j.support.mapping.SourceStateTransmitter.copyEntityStatePropertyValue(SourceStateTransmitter.java:91) at org.springframework.data.neo4j.support.mapping.SourceStateTransmitter.access$000(SourceStateTransmitter.java:40) at org.springframework.data.neo4j.support.mapping.SourceStateTransmitter$1.doWithPersistentProperty(SourceStateTransmitter.java:54) at org.springframework.data.neo4j.support.mapping.SourceStateTransmitter$1.doWithPersistentProperty(SourceStateTransmitter.java:51) at org.springframework.data.mapping.model.BasicPersistentEntity.doWithProperties(BasicPersistentEntity.java:240) at org.springframework.data.neo4j.support.mapping.SourceStateTransmitter.copyPropertiesFrom(SourceStateTransmitter.java:51) at org.springframework.data.neo4j.support.mapping.Neo4jEntityConverterImpl.loadEntity(Neo4jEntityConverterImpl.java:100) at org.springframework.data.neo4j.support.mapping.Neo4jEntityConverterImpl.read(Neo4jEntityConverterImpl.java:92) at org.springframework.data.neo4j.support.mapping.Neo4jEntityPersister$CachedConverter.read(Neo4jEntityPersister.java:170) at org.springframework.data.neo4j.support.mapping.Neo4jEntityPersister.createEntityFromState(Neo4jEntityPersister.java:189) at org.springframework.data.neo4j.support.mapping.Neo4jEntityPersister.persist(Neo4jEntityPersister.java:244) at org.springframework.data.neo4j.support.mapping.Neo4jEntityPersister.persist(Neo4jEntityPersister.java:231) at org.springframework.data.neo4j.support.Neo4jTemplate.save(Neo4jTemplate.java:293) at org.springframework.data.neo4j.support.Neo4jTemplate.save(Neo4jTemplate.java:287) at org.springframework.data.neo4j.repository.AbstractGraphRepository.save(AbstractGraphRepository.java:109) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:601) at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.executeMethodOn(RepositoryFactorySupport.java:333) at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.invoke(RepositoryFactorySupport.java:318) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172) at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:110) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172) at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:155) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172) at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:202) at com.sun.proxy.$Proxy38.save(Unknown Source) at com.aravind.avl.domain.PlayerRepositoryTest.firstNameExactMatchOnly(PlayerRepositoryTest.java:53)包装类

，则没有错误

异常

@NodeEntity
public class Player
{
    @GraphId
    private Long nodeId;

    @GraphProperty
    @Indexed
    private String firstName;

    @GraphProperty
    @Indexed
    private String lastName;

    private transient boolean isCaptain;
}

ENTITY

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration({ "/testContext.xml" })
@Transactional
public class PlayerRepositoryTest
{
    @Autowired
    PlayerRepository repo;

    Player p;

    @Before
    public void setUp()
    {
        p = new Player();
        p.setName("Aravind Yarram");
    }

    @Test
    public void firstNameFullTextSearch()
    {
        Player save = repo.save(p);
        assertNotNull(save);
        assertNotNull(p.getNodeId());

        EndResult<Player> players = repo.findAllByQuery("firstName", "A*");
        assertNotNull("Starts with first letter match", players.single());

        // TODO not supported
        // players = repo.findAllByQuery("firstName", "aravind");
        // assertNotNull("Lower-case mathch", players.single());
    }

    @Test
    public void firstNameExactMatchOnly()
    {
        Player save = repo.save(p);
        assertNotNull(save);
        assertNotNull(p.getNodeId());

        // either use domain specific method
        Player result = repo.findByPropertyValue("firstName", p.getFirstName());
        assertNotNull("findByPropertyValue should be used for EXACT matches", result);

        // or generic method
        result = repo.findPlayerByFirstName(p.getFirstName());
        assertNotNull("Exact mathch", result);
    }
}

JUNIT

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Answer 1

Sotirios Delimanolis 建议

@Transient。我认为transient关键字并不受尊重，因为它可能与需要序列化的用例冲突。对于例如您可能希望isCaptain属性在Web会话中可用，但不需要保存到neo4j，我的确切情况。

使用spring数据neo4j保存具有瞬态属性的实体时出错

1 个答案: