Exception in thread "main" javax.persistence.PersistenceException: Unable to build entity manager factory

[José Álvarez de Lara]

Hi Michael,

I am trying to pass a dataset from MySQL to Neo4j with the following code snippet,

final EntityManagerFactory emf = Persistence.createEntityManagerFactory("ogm-neo4j");
EntityManager em = emf.createEntityManager();
EntityTransaction tx = em.getTransaction();

but I am getting the following exception,

Exception in thread "main" javax.persistence.PersistenceException: Unable to build entity manager factory
 at org.hibernate.jpa.HibernatePersistenceProvider.createEntityManagerFactory(HibernatePersistenceProvider.java:83)
 at org.hibernate.ogm.jpa.HibernateOgmPersistence.createEntityManagerFactory(HibernateOgmPersistence.java:63)
 at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:55)
 at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:39)
 at org.neo4j.example.main.Main.main(Main.java:40)
Caused by: org.hibernate.service.spi.ServiceException: Unable to create requested service [org.hibernate.ogm.dialect.spi.GridDialect]
 at org.hibernate.service.internal.AbstractServiceRegistryImpl.createService(AbstractServiceRegistryImpl.java:261)
 at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:225)
 at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:206)
 at org.hibernate.ogm.dialect.impl.OgmDialectFactoryInitiator$OgmDialectFactory.<init>(OgmDialectFactoryInitiator.java:44)
 at org.hibernate.ogm.dialect.impl.OgmDialectFactoryInitiator.initiateService(OgmDialectFactoryInitiator.java:31)
 at org.hibernate.ogm.dialect.impl.OgmDialectFactoryInitiator.initiateService(OgmDialectFactoryInitiator.java:25)
 at org.hibernate.boot.registry.internal.StandardServiceRegistryImpl.initiateService(StandardServiceRegistryImpl.java:105)
 at org.hibernate.service.internal.AbstractServiceRegistryImpl.createService(AbstractServiceRegistryImpl.java:251)
 at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:225)
 at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:206)
 at org.hibernate.engine.jdbc.internal.JdbcServicesImpl.configure(JdbcServicesImpl.java:95)
 at org.hibernate.ogm.service.impl.OgmJdbcServicesInitiator$OgmJdbcServicesImpl.configure(OgmJdbcServicesInitiator.java:50)
 at org.hibernate.boot.registry.internal.StandardServiceRegistryImpl.configureService(StandardServiceRegistryImpl.java:111)
 at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:234)
 at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:206)
 at org.hibernate.cfg.Configuration.buildTypeRegistrations(Configuration.java:1887)
 at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1845)
 at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl$4.perform(EntityManagerFactoryBuilderImpl.java:857)
 at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl$4.perform(EntityManagerFactoryBuilderImpl.java:850)
 at org.hibernate.boot.registry.classloading.internal.ClassLoaderServiceImpl.withTccl(ClassLoaderServiceImpl.java:425)
 at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:849)
 at org.hibernate.jpa.HibernatePersistenceProvider.createEntityManagerFactory(HibernatePersistenceProvider.java:75)
 ... 4 more
Caused by: org.hibernate.HibernateException: OGM000011: Cannot instantiate GridDialect class [org.hibernate.ogm.datastore.neo4j.Neo4jDialect]
 at org.hibernate.ogm.dialect.impl.GridDialectInitiator$GridDialectInstantiator.newInstance(GridDialectInitiator.java:115)
 at org.hibernate.ogm.dialect.impl.GridDialectInitiator$GridDialectInstantiator.newInstance(GridDialectInitiator.java:64)
 at org.hibernate.ogm.util.configurationreader.impl.DefaultClassPropertyReaderContext.getDefaultValue(DefaultClassPropertyReaderContext.java:116)
 at org.hibernate.ogm.util.configurationreader.impl.DefaultClassPropertyReaderContext.getTypedValue(DefaultClassPropertyReaderContext.java:86)
 at org.hibernate.ogm.util.configurationreader.impl.PropertyReaderContextBase.getValue(PropertyReaderContextBase.java:90)
 at org.hibernate.ogm.util.configurationreader.impl.DefaultClassPropertyReaderContext.getValue(DefaultClassPropertyReaderContext.java:28)
 at org.hibernate.ogm.dialect.impl.GridDialectInitiator.initiateService(GridDialectInitiator.java:61)
 at org.hibernate.ogm.dialect.impl.GridDialectInitiator.initiateService(GridDialectInitiator.java:34)
 at org.hibernate.boot.registry.internal.StandardServiceRegistryImpl.initiateService(StandardServiceRegistryImpl.java:105)
 at org.hibernate.service.internal.AbstractServiceRegistryImpl.createService(AbstractServiceRegistryImpl.java:251)
 ... 25 more
Caused by: java.lang.reflect.InvocationTargetException
 at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
 at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
 at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
 at java.lang.reflect.Constructor.newInstance(Constructor.java:408)
 at org.hibernate.ogm.dialect.impl.GridDialectInitiator$GridDialectInstantiator.newInstance(GridDialectInitiator.java:93)
 ... 34 more
Caused by: java.lang.NoClassDefFoundError: org/neo4j/kernel/impl/util/StringLogger
 at org.hibernate.ogm.datastore.neo4j.Neo4jDialect.getStringLogger(Neo4jDialect.java:136)
 at org.hibernate.ogm.datastore.neo4j.Neo4jDialect.<init>(Neo4jDialect.java:118)
 ... 39 more
Caused by: java.lang.ClassNotFoundException: org.neo4j.kernel.impl.util.StringLogger
 at java.net.URLClassLoader$1.run(URLClassLoader.java:372)
 at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
 at java.security.AccessController.doPrivileged(Native Method)
 at java.net.URLClassLoader.findClass(URLClassLoader.java:360
 at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
 at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
 at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
 ... 41 more

The exception occurs in the first line of the code snippet which is the first line of the Java program.

I have disabled the Java SecurityManager but neither works it.

I knoe that exists an incompatibility between the neo4j-kernel and hibernate-ogm-neo4j or

something so.

In this case which is the problem?

Cheers,

Josè

[José Álvarez de Lara]

Hi,

I am running the App with the JDK 7 and here are the dependencies in the pom.xml file,

          <dependency>
            <groupId>org.neo4j</groupId>
            <artifactId>neo4j</artifactId>
            <version>${neo4j.version}</version>
            <exclusions>
                <exclusion>
                    <groupId>org.neo4j</groupId>
                    <artifactId>neo4j-jmx</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
        <dependency>
            <groupId>org.neo4j</groupId>
            <artifactId>neo4j-kernel</artifactId>
            <version>${neo4j.version}</version>
        </dependency>

        -------------------------------

        -------------------------------

        <dependency>
                <groupId>org.hibernate.ogm</groupId>
                <artifactId>hibernate-ogm-neo4j</artifactId>
                <version>4.2.0.Final</version>
        </dependency>
        <dependency>
                <groupId>org.hibernate</groupId>
                <artifactId>hibernate-search</artifactId>
                <version>4.5.0.Final</version>
        </dependency>

I hope the last information helps to understand the issue.

Cheers,

José

[Michael Hunger]

No idea, I never actively used Neo4j-OGM

Looks a bit like a version / dependency issue. Like as if you try to use it with a newer neo4j version than it is was written against.

alternatively it might be sensible to post it to Stackoverflow and add the hibernate-ogm tag ?

Michael

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