Question

我试图连接到Neo4j数据库。我的数据库是从Neo4j网站下载的＃Cineacts Actors＆amp; Movies＆＃34;。它位于C：\ NewMovies

这是我的申请：

public class App 
{
    private static final String JBOSS_TM_CLASS_NAME = "com.arjuna.ats.jta.TransactionManager";
    public static void main( String[] args )
    {  
TransactionManager tm = getTransactionManager();
        //build the EntityManagerFactory as you would build in in Hibernate Core
      EntityManagerFactory emf = Persistence.createEntityManagerFactory("ogm-jpa-tutorial");
System.out.println( "Hello World!" );
    }

   public static TransactionManager getTransactionManager() {
        try {
            Class<?> tmClass = App.class.getClassLoader().loadClass( JBOSS_TM_CLASS_NAME );
            return (TransactionManager) tmClass.getMethod( "transactionManager" ).invoke( null );
        } catch ( ClassNotFoundException e ) {
            e.printStackTrace();
        } catch ( InvocationTargetException e ) {
            e.printStackTrace();
        } catch ( NoSuchMethodException e ) {
            e.printStackTrace();
        } catch ( IllegalAccessException e ) {
            e.printStackTrace();
        }
        return null;
    }
}

我的持久性文件：

<?xml version="1.0" encoding="UTF-8"?>
<persistence xmlns="http://java.sun.com/xml/ns/persistence"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd"
    version="2.0">

    <persistence-unit name="ogm-jpa-tutorial" transaction-type="JTA">
        <!-- Use Hibernate OGM provider: configuration will be transparent -->
        <provider>org.hibernate.ogm.jpa.HibernateOgmPersistence</provider>
        <class>com.mycompany.hibernateneo.Movie</class>
        <properties>
            <property name="hibernate.ogm.datastore.provider" value="neo4j_embedded" />
            <property name="hibernate.ogm.neo4j.database_path" value="C:/NewMovies" />

            <!-- defines which JTA Transaction we plan to use -->
            <property name="hibernate.transaction.jta.platform"
                      value="org.hibernate.service.jta.platform.internal.JBossStandAloneJtaPlatform"/>
        </properties>
    </persistence-unit>
</persistence>

我的实体档案：

 @Entity
    @Table(name = "Movie")
public class Movie {
   @Id
    String id;
    @Basic
    String title;
@Basic
    String description;
@Basic
    private String language;
@Basic
    private String imdbId;
@Basic
    private String tagline;
    @Basic
    private Integer runtime;
    @Basic
    private String homepage;
    @Basic
    private String trailer;
    @Basic
    private String genre;
    @Basic
    private String studio;
    @Basic
    private Integer version;
    @Basic
    private String imageUrl;
    public Movie() {
    }
    public Movie(String id, String title) {
        this.id = id;
        this.title = title;
    }
    public String getId() {
        return id;
    }
    public String getTitle() {
        return title;
    }
    public String getDescription() {
        return description;
    }
    public void setTitle(String title) {
        this.title=title;
    }
    public void setLanguage(String language) {
        this.language = language;
    }
    public void setImdbId(String imdbId) {
        this.imdbId = imdbId;
    }
    public void setTagline(String tagline) {
        this.tagline = tagline;
    }
    public void setDescription(String description) {
        this.description = description;
    }
    public void setRuntime(Integer runtime) {
        this.runtime = runtime;
    }
    public void setHomepage(String homepage) {
        this.homepage = homepage;
    }
    public void setTrailer(String trailer) {
        this.trailer = trailer;
    }
    public void setGenre(String genre) {
        this.genre = genre;
    }
    public void setStudio(String studio) {
        this.studio = studio;
    }
    public void setVersion(Integer version) {
        this.version = version;
    }
    public void setImageUrl(String imageUrl) {
        this.imageUrl = imageUrl;
    }
    public String getLanguage() {
        return language;
    }
    public String getImdbId() {
        return imdbId;
    }
    public String getTagline() {
        return tagline;
    }
    public Integer getRuntime() {
        return runtime;
    }
    public String getHomepage() {
        return homepage;
    }
    public String getTrailer() {
        return trailer;
    }
    public String getGenre() {
        return genre;
    }
    public String getStudio() {
        return studio;
    }
    public Integer getVersion() {
        return version;
    }
    public String getImageUrl() {
        return imageUrl;
    }
    public String getYoutubeId() {
        String trailerUrl = trailer;
        if (trailerUrl==null || !trailerUrl.contains("youtu")) return null;
        String[] parts = trailerUrl.split("[=/]");
        int numberOfParts = parts.length;
        return numberOfParts > 0 ? parts[numberOfParts-1] : null;
    }  
}

我得到的错误：

线程中的异常＆＃34; main＆＃34; javax.persistence.PersistenceException：[PersistenceUnit：ogm-jpa-tutorial]无法构建EntityManagerFactory 在org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory（Ejb3Configuration.java:915）在org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory（Ejb3Configuration.java:890）在org.hibernate.ejb.HibernatePersistence.createEntityManagerFactory（HibernatePersistence.java:57）在org.hibernate.ogm.jpa.HibernateOgmPersistence.createEntityManagerFactory（HibernateOgmPersistence.java:93）在javax.persistence.Persistence.createEntityManagerFactory（Persistence.java:63）在javax.persistence.Persistence.createEntityManagerFactory（Persistence.java:47）在com.mycompany.hibernateneo.App.main（App.java:22）引起：org.hibernate.MappingException：无法获取org.hibernate.ogm.persister.SingleTableOgmEntityPersister的构造函数在org.hibernate.persister.internal.PersisterFactoryImpl.create（PersisterFactoryImpl.java:185）在org.hibernate.persister.internal.PersisterFactoryImpl.createEntityPersister（PersisterFactoryImpl.java:135）在org.hibernate.internal.SessionFactoryImpl。（SessionFactoryImpl.java:385）在org.hibernate.cfg.Configuration.buildSessionFactory（Configuration.java:1742）在org.hibernate.ejb.EntityManagerFactoryImpl。（EntityManagerFactoryImpl.java:94）在org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory（Ejb3Configuration.java:905） ......还有6个引起：org.hibernate.service.spi.ServiceException：无法创建请求的服务[org.hibernate.ogm.dialect.impl.GridDialectFactory] at org.hibernate.service.internal.AbstractServiceRegistryImpl.createService（AbstractServiceRegistryImpl.java:186）在org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService（AbstractServiceRegistryImpl.java:150） at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService（AbstractServiceRegistryImpl.java:131） at org.hibernate.ogm.datastore.impl.DatastoreServicesInitiator.initiateService（DatastoreServicesInitiator.java:50） at org.hibernate.ogm.datastore.impl.DatastoreServicesInitiator.initiateService（DatastoreServicesInitiator.java:39） at org.hibernate.service.internal.SessionFactoryServiceRegistryImpl.initiateService（SessionFactoryServiceRegistryImpl.java:91） at org.hibernate.service.internal.AbstractServiceRegistryImpl.createService（AbstractServiceRegistryImpl.java:176）在org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService（AbstractServiceRegistryImpl.java:150） at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService（AbstractServiceRegistryImpl.java:131）在org.hibernate.ogm.persister.OgmEntityPersister。（OgmEntityPersister.java:129）在org.hibernate.ogm.persister.SingleTableOgmEntityPersister。（SingleTableOgmEntityPersister.java:47） at sun.reflect.NativeConstructorAccessorImpl.newInstance0（Native Method） at sun.reflect.NativeConstructorAccessorImpl.newInstance（NativeConstructorAccessorImpl.java:57） at sun.reflect.DelegatingConstructorAccessorImpl.newInstance（DelegatingConstructorAccessorImpl.java:45） at java.lang.reflect.Constructor.newInstance（Constructor.java:526）在org.hibernate.persister.internal.PersisterFactoryImpl.create（PersisterFactoryImpl.java:163） ......还有11个引起：java.lang.IllegalArgumentException：属性hibernate.ogm.neo4j.database.path不能为null at org.hibernate.ogm.datastore.neo4j.impl.EmbeddedGraphDatabaseFactory.validate（EmbeddedGraphDatabaseFactory.java:61）在org.hibernate.ogm.datastore.neo4j.impl.EmbeddedGraphDatabaseFactory.initialize（EmbeddedGraphDatabaseFactory.java:52）在org.hibernate.ogm.datastore.neo4j.impl.Neo4jGraphDatabaseServiceFactoryProvider.load（Neo4jGraphDatabaseServiceFactoryProvider.java:44）在org.hibernate.ogm.datastore.neo4j.impl.Neo4jDatastoreProvider.configure（Neo4jDatastoreProvider.java:77） at org.hibernate.ogm.service.impl.OgmSessionFactoryServiceRegistryImpl.configureService（OgmSessionFactoryServiceRegistryImpl.java:69） at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService（AbstractServiceRegistryImpl.java:159） at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService（AbstractServiceRegistryImpl.java:131）在org.hibernate.ogm.dialect.impl.GridDialectFactoryInitiator.createDialect（GridDialectFactoryInitiator.java:58）在org.hibernate.ogm.dialect.impl.GridDialectFactoryInitiator.initiateService（GridDialectFactoryInitiator.java:49）在org.hibernate.ogm.dialect.impl.GridDialectFactoryInitiator.initiateService（GridDialectFactoryInitiator.java:38） at org.hibernate.service.internal.SessionFactoryServiceRegistryImpl.initiateService（SessionFactoryServiceRegistryImpl.java:91） at org.hibernate.service.internal.AbstractServiceRegistryImpl.createService（AbstractServiceRegistryImpl.java:176） ......还有26个

拜托，任何想法？

Answer 1

删除

   <property name="hibernate.transaction.jta.platform"
                  value="org.hibernate.service.jta.platform.internal.JBossStandAloneJtaPlatform"/>

来自persistence.xml文件的

。 HibernateOGM for neo4j目前在OGM内部使用一种变通解决方案进行交易。

现在反映在最新的beta手册中。 Look at the Warning box

Hibernate ogm Neo4j entitymanager错误

1 个答案: