Thank you so much, I should of known better as I used hibernate alot.
Moving on with this now and the next two things I have to tackle... How can
I merge nodes when saving them? Is it possible to create lables on nodes
using Spring neo4j?
On Tuesday, December 17, 2013 3:54:53 PM UTC, Dominic Martino wrote:
>
> Hi All, I am just trying lash together a simple data import using Spring
> Data and Neo4j. I am just trying to import wine ratings data, so I will
> have a 'Wine' and a 'User' and the relationship between them will be a
> rating which has a propery which the rating the User gave the wine.
>
> I am creating a single set of objects using some hardcoded data, upon
> saving the data I get the following error
>
> From what I can see its trying to get one of the nodes I have created (but
> not yet saved) by its id which is 1.
>
>
> Caused by: org.neo4j.graphdb.NotFoundException: 1
> at
> org.neo4j.rest.graphdb.ExecutingRestAPI.getNodeById(ExecutingRestAPI.java:91)
> at org.neo4j.rest.graphdb.RestAPIFacade.getNodeById(RestAPIFacade.java:57)
> at
> org.neo4j.rest.graphdb.RestGraphDatabase.getNodeById(RestGraphDatabase.java:64)
> at
> org.springframework.data.neo4j.support.mapping.EntityStateHandler.getPersistentState(EntityStateHandler.java:107)
> at
> org.springframework.data.neo4j.support.mapping.EntityStateHandler.getPersistentState(EntityStateHandler.java:93)
> at
> org.springframework.data.neo4j.support.mapping.Neo4jEntityPersister.getPersistentState(Neo4jEntityPersister.java:221)
> at
> org.springframework.data.neo4j.support.mapping.Neo4jEntityPersister.persist(Neo4jEntityPersister.java:242)
> at
> org.springframework.data.neo4j.support.mapping.Neo4jEntityPersister.persist(Neo4jEntityPersister.java:231)
> at
> org.springframework.data.neo4j.support.Neo4jTemplate.save(Neo4jTemplate.java:294)
> at
> org.springframework.data.neo4j.support.Neo4jTemplate.save(Neo4jTemplate.java:288)
> at
> org.springframework.data.neo4j.repository.AbstractGraphRepository.save(AbstractGraphRepository.java:110)
> 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:606)
> at
> org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.executeMethodOn(RepositoryFactorySupport.java:344)
> at
> org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.invoke(RepositoryFactorySupport.java:329)
> at
> org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
> at
> org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:110)
> at
> org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
> at
> org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:155)
> ... 24 more
>
>
>
>
>
> .
>
>
>
> Digging further into whats happening I can see the following code in
> org.springframework.data.neo4j.support.mapping.Neo
> 4jEntityPersister.persist(...):
>
>
>
>
>
> if (isNodeEntity(type)) {
> final Node node = this.<Node>getPersistentState(entity); // <-
> line 242 in Neo4jEntityPersister.java
> this.nodeConverter.write(entity, node,mappingPolicy, template,
> null );
> return createEntityFromState(getPersistentState(entity),type,
> getMappingPolicy(type), template);
> //return entity; // TODO ?
> }
>
>
>
>
> If gets the node before writing it? The underlying code in Neo4j
> then throws an exception because it cannot be found.
>
> What am I doing wrong?
>
> For info I am using the following dependencies through Gradle:
> Code:
>
> org.springframework.data:spring-data-neo4j:2.3.2.RELEASE
> org.springframework:spring-context:4.0.0.RELEASE
> javax.validation:validation-api:1.0.0.GA
> org.springframework.data:spring-data-neo4j-rest:2.3.2.RELEASE
>
> Happy to post up the rest of my code if required.
>
> Thanks for any help
>
>
>
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