Spring Data Neo4j and InvalidDataAccessApiUsageException for

Question

我已将 uuid 属性添加到我的 SDN 4 Base 实体，所以现在它看起来像：

@NodeEntity
public abstract class BaseEntity {
    @GraphId
    private Long id;
    @Index(unique = true, primary = true)
    private String uuid;
...
}

现在我的一些测试停止工作。

我有一个Commentable抽象类：

@NodeEntity
public abstract class Commentable extends BaseEntity {
    private final static String COMMENTED_ON = "COMMENTED_ON";
    @Relationship(type = COMMENTED_ON, direction = Relationship.INCOMING)
    private Set<Comment> comments = new HashSet<>();
    public Set<Comment> getComments() {
        return comments;
    }
    public void addComment(Comment comment) {
        if (comment != null) {
            comments.add(comment);
        }
    }
    public void removeComment(Comment comment) {
        comments.remove(comment);
    }
}

与我的域模型不同的NodeEntity扩展了这个类..

public class Decision extends Commentable
public class Product extends Commentable

等

这是我的 SDN 4 存储库

@Repository
public interface CommentableRepository extends GraphRepository<Commentable> {
}

现在当我尝试访问时

commentableRepository.findOne(commentableId);

其中 commentableId 是决策 ID 或产品 ID，则失败，并出现以下异常：

org.springframework.dao.InvalidDataAccessApiUsageException: Supplied id does not match primary index type on supplied class.; nested exception is org.neo4j.ogm.session.Neo4jException: Supplied id does not match primary index type on supplied class.
    at org.springframework.data.neo4j.transaction.SessionFactoryUtils.convertOgmAccessException(SessionFactoryUtils.java:154)
    at org.springframework.data.neo4j.repository.support.SessionBeanDefinitionRegistrarPostProcessor.translateExceptionIfPossible(SessionBeanDefinitionRegistrarPostProcessor.java:71)
    at org.springframework.dao.support.ChainedPersistenceExceptionTranslator.translateExceptionIfPossible(ChainedPersistenceExceptionTranslator.java:59)
    at org.springframework.dao.support.DataAccessUtils.translateIfNecessary(DataAccessUtils.java:213)
    at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:147)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
    at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:92)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
    at org.springframework.data.repository.core.support.SurroundingTransactionDetectorMethodInterceptor.invoke(SurroundingTransactionDetectorMethodInterceptor.java:57)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
    at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:213)
    at com.sun.proxy.$Proxy175.findOne(Unknown Source)

但是，如果我从BaseEntity.uuid字段中删除@Index(unique = true, primary = true)，一切就会开始正常工作。

如何解决这个问题？

Answer 1

您使用了错误的Repository。 GraphRepository是一个遗留实现。新的实现称为 Neo4jRepository 。

尝试：

public interface CommentableRepository extends Neo4jRepository<Commentable, String> {
    ...
}

主要区别在于第二个参数化类型，它是用于域类的ID的类型;在本例中为 String uuid 。