Hi Stefan,
Can you send the entire debug log? (add <logger name="org.neo4j.ogm"
level="debug" /> to a logback.xml in the classpath)
Thanks
Luanne
On Thu, Jan 21, 2016 at 1:15 AM, Stefan Polyanszky <pol...@gmail.com> wrote:
> Hi there,
>
> I have a big project coming up and i consider Neo4j as my primary
> database.
> My problem is, that i hit a wall right at the start of my evaluation ..
>
> Technology:
> Java
>
> Neo4j Community Server 2.3.2
> neo4j-ogm 1.1.4 library to access the database
> javaee-api 7.0
>
> payara 4.1.1 server (basically glassfish)
>
>
> it's a minimal POC project with just 1 entity class.
>
> -----
> @NodeEntity(label = "Account")
> public class Account {
>
> @GraphId
> public Long id;
>
> @Property(name = "first_name")
> public String firstname;
> @Property(name = "last_name")
> public String lastname;
>
> // getters and setters
> }
>
> and a sessionFactory, mostly 1:1 as on all the neo4j tutorials:
>
> public class Database{
>
> String username = "neo4j";
> String password = "neo4jj";
> private static Database factory = new Database();
> private final static SessionFactory sessionFactory = new
> SessionFactory("foobar.domain");
>
> public static Database getInstance() {
> return factory;
> }
>
> private Database() {
> }
>
> public Session getNeo4jSession() {
> return sessionFactory.openSession("http://localhost:7474";,
> username, password);
> }
> }
>
>
> and a store/service class for that entity
>
> @Named
> @Stateless
> public class AccountStore{
>
> private static final int DEPTH_LIST = 0;
> private static final int DEPTH_ENTITY = 1;
> private Session session = Database.getInstance().getNeo4jSession();
>
> public Iterable<Account> findAll() {
> return session.loadAll(Account.class, DEPTH_LIST);
> }
>
> public Account find(Long id) {
> return session.load(Account.class, id, DEPTH_ENTITY);
> }
>
> public void delete(Long id) {
> session.delete(session.load(Account.class, id));
> }
>
> public Account createOrUpdate(Account entity) {
> session.save(entity, DEPTH_ENTITY);
> return find(((Account) entity).getId());
> }
> }
>
>
> and a small bean that triggers all of that :
>
> @Named(value = "mockBean")
> @SessionScoped
> public class MockBean {
>
> @Inject
> AccountStore accStore;
>
> public void startMock(){
>
> Account acc = new Account();
> acc.setFirstname("Foo " + System.currentTimeMillis());
> acc.setLastname("Bar " + System.currentTimeMillis());
>
> Account storedAcc = accStore.createOrUpdate(acc);
> System.out.println("Account created with id: " +
> storedAcc.getId());
> }
> }
>
> and i always get this error:
>
> Caused by: org.neo4j.ogm.session.result.ResultProcessingException:
> "errors":[{"code":"Neo.ClientError.Statement.InvalidType","message":"Expected
> a numeric value for empty iterator, but got null"}]}
> at
> org.neo4j.ogm.session.response.JsonResponse.parseErrors(JsonResponse.java:165)
> at
> org.neo4j.ogm.session.response.JsonResponse.parseColumns(JsonResponse.java:139)
> at
> org.neo4j.ogm.session.response.JsonResponse.initialiseScan(JsonResponse.java:75)
> at
> org.neo4j.ogm.session.response.GraphModelResponse.initialiseScan(GraphModelResponse.java:69)
> at
> org.neo4j.ogm.session.response.GraphModelResponse.<init>(GraphModelResponse.java:39)
> ... 99 more
>
> what can i do ? with this error message, there is just 1 stackoverflow
> result in google (3 google results overall !!)
> and this stackoverflow error is related to Relationships .. so this does
> not apply here.
>
> What am i doing wrong ?
>
> Best regards
>
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