[hibernate-issues] [Hibernate-JIRA] Created: (HHH-7196) Could not instantiate persister org.hibernate.persister.entity.SingleTableEntityPersister

[stanislav bashkirtsev (JIRA)]

Could not instantiate persister org.hibernate.persister.entity.SingleTableEntityPersister
-----------------------------------------------------------------------------------------

                 Key: HHH-7196
                 URL: https://hibernate.onjira.com/browse/HHH-7196
             Project: Hibernate ORM
          Issue Type: Bug
          Components: core
    Affects Versions: 4.1.1
         Environment: 4.1.1, Windows XP, In Memory HSQLDB 2.2.8
            Reporter: stanislav bashkirtsev


While mapping the OTO, I've an NPE. I'm not strong in annotations and it's possible that the mapping is wrong, but anyway I'd assume that the exception should be more explanatory:
{code}23-Mar-2012 14:40:16 org.hibernate.annotations.common.Version <clinit>
INFO: HCANN000001: Hibernate Commons Annotations {4.0.1.Final}
23-Mar-2012 14:40:16 org.hibernate.Version logVersion
INFO: HHH000412: Hibernate Core {4.1.1}
23-Mar-2012 14:40:16 org.hibernate.cfg.Environment <clinit>
INFO: HHH000206: hibernate.properties not found
23-Mar-2012 14:40:16 org.hibernate.cfg.Environment buildBytecodeProvider
INFO: HHH000021: Bytecode provider name : javassist
23-Mar-2012 14:40:16 org.hibernate.service.jdbc.connections.internal.DriverManagerConnectionProviderImpl configure
INFO: HHH000402: Using Hibernate built-in connection pool (not for production use!)
23-Mar-2012 14:40:16 org.hibernate.service.jdbc.connections.internal.DriverManagerConnectionProviderImpl configure
INFO: HHH000115: Hibernate connection pool size: 20
23-Mar-2012 14:40:16 org.hibernate.service.jdbc.connections.internal.DriverManagerConnectionProviderImpl configure
INFO: HHH000006: Autocommit mode: false
23-Mar-2012 14:40:16 org.hibernate.service.jdbc.connections.internal.DriverManagerConnectionProviderImpl configure
INFO: HHH000401: using driver [org.hsqldb.jdbcDriver] at URL [jdbc:hsqldb:mem:testdb]
23-Mar-2012 14:40:16 org.hibernate.service.jdbc.connections.internal.DriverManagerConnectionProviderImpl configure
INFO: HHH000046: Connection properties: {user=sa, password=****}
23-Mar-2012 14:40:16 org.hibernate.dialect.Dialect <init>
INFO: HHH000400: Using dialect: org.hibernate.dialect.HSQLDialect
23-Mar-2012 14:40:16 org.hibernate.engine.transaction.internal.TransactionFactoryInitiator initiateService
INFO: HHH000399: Using default transaction strategy (direct JDBC transactions)
23-Mar-2012 14:40:16 org.hibernate.hql.internal.ast.ASTQueryTranslatorFactory <init>
INFO: HHH000397: Using ASTQueryTranslatorFactory
Exception in thread "main" org.hibernate.MappingException: Could not instantiate persister org.hibernate.persister.entity.SingleTableEntityPersister
	at org.hibernate.persister.internal.PersisterFactoryImpl.create(PersisterFactoryImpl.java:174)
	at org.hibernate.persister.internal.PersisterFactoryImpl.createEntityPersister(PersisterFactoryImpl.java:148)
	at org.hibernate.internal.SessionFactoryImpl.<init>(SessionFactoryImpl.java:820)
	at org.hibernate.metamodel.source.internal.SessionFactoryBuilderImpl.buildSessionFactory(SessionFactoryBuilderImpl.java:65)
	at org.hibernate.metamodel.source.internal.MetadataImpl.buildSessionFactory(MetadataImpl.java:340)
	at poc.hibernate.Main.main(Main.java:37)
Caused by: java.lang.NullPointerException
	at org.hibernate.tuple.PropertyFactory.buildStandardProperty(PropertyFactory.java:288)
	at org.hibernate.tuple.entity.EntityMetamodel.<init>(EntityMetamodel.java:442)
	at org.hibernate.persister.entity.AbstractEntityPersister.<init>(AbstractEntityPersister.java:791)
	at org.hibernate.persister.entity.SingleTableEntityPersister.<init>(SingleTableEntityPersister.java:460)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
	at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
	at org.hibernate.persister.internal.PersisterFactoryImpl.create(PersisterFactoryImpl.java:163){code}
Test Case:
{code}@Entity
@Table(name = "AUTHOR")
public class Author {
    @Id
    @GeneratedValue
    private Long id;

    public Long getId() {
        return id;
    }

    public void setId(Long id) {
        this.id = id;
    }
}{code}
The original exceptions is thrown in _PropertyFactory_ on the line 288 when it appears that type variable is _null_.
{code}@Entity
@Table(name = "BOOK")
public class Book {
    @Id
    @GeneratedValue
    private Long id;
    @OneToOne
    private Author author;

    public Long getId() {
        return id;
    }

    public void setId(Long id) {
        this.id = id;
    }

    public Author getAuthor() {
        return author;
    }

    public void setAuthor(Author author) {
        this.author = author;
    }
}{code}
{code}public class Main {
    public static void main(String[] args) {
        Configuration configuration = new Configuration()
                .setProperty("hibernate.archive.autodetection", "class")
                .setProperty("hibernate.connection.driver_class", "org.hsqldb.jdbcDriver")
                .setProperty("hibernate.dialect", "org.hibernate.dialect.HSQLDialect")
                .setProperty("hibernate.hbm2ddl.auto", "create")
                .setProperty("hibernate.connection.url", "jdbc:hsqldb:mem:testdb")
                .setProperty("hibernate.connection.username", "sa")
                .setProperty("hibernate.connection.password", "")
                .setProperty("connection.pool_size", "2");
        ServiceRegistry serviceRegistry = new ServiceRegistryBuilder()
                .applySettings(configuration.getProperties())
                .buildServiceRegistry();
        MetadataSources metadataSources = new MetadataSources(serviceRegistry);
        metadataSources
                .addAnnotatedClass(Author.class)
                .addAnnotatedClass(Book.class);
        SessionFactory sessionFactory = metadataSources.buildMetadata().buildSessionFactory();
    }
}{code}

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