Второе Наследование уровень в JPA с TABLE_PER_CLASS

Я не мог заставить его работать, чтобы использовать второй уровень наследования ...Второе Наследование уровень в JPA с TABLE_PER_CLASS

Иметь опыт кого-то в этой теме? Может быть, намек?

я вынужден использовать другую стратегию наследования:/

класс FileEntity

@Entity 
@Inheritance(strategy = InheritanceType.TABLE_PER_CLASS) 
@Table(name = "file_entity", schema = "", catalog = Constants.CATALOG_NAME) 
public class FileEntity { 
... 
}

класса Document

@Entity 
@Inheritance(strategy = InheritanceType.TABLE_PER_CLASS) 
@Table(name = "document", schema = "", catalog = Constants.CATALOG_NAME) 
public class Document extends FileEntity { 
... 
}

класс Почты

@Entity 
@Table(name = "mail", schema = "", catalog = Constants.CATALOG_NAME) 
public class Mail extends Document

Получил следующее исключение, не заполненного Exception Описания в нем ..

Descriptor Exceptions: 
Runtime Exceptions: 
--------------------------------------------------------- 

java.lang.NullPointerException 

java.lang.NullPointerException 

    at org.eclipse.persistence.internal.sessions.DatabaseSessionImpl.initializeDescriptors(DatabaseSessionImpl.java:696) 
    at org.eclipse.persistence.internal.sessions.DatabaseSessionImpl.initializeDescriptors(DatabaseSessionImpl.java:632) 
    at org.eclipse.persistence.internal.sessions.DatabaseSessionImpl.initializeDescriptors(DatabaseSessionImpl.java:568) 
    at org.eclipse.persistence.internal.sessions.DatabaseSessionImpl.postConnectDatasource(DatabaseSessionImpl.java:799) 
    at org.eclipse.persistence.internal.sessions.DatabaseSessionImpl.loginAndDetectDatasource(DatabaseSessionImpl.java:743) 
    at org.eclipse.persistence.internal.jpa.EntityManagerFactoryProvider.login(EntityManagerFactoryProvider.java:239) 
    at org.eclipse.persistence.internal.jpa.EntityManagerSetupImpl.deploy(EntityManagerSetupImpl.java:685) 
    at org.eclipse.persistence.internal.jpa.EntityManagerFactoryDelegate.getAbstractSession(EntityManagerFactoryDelegate.java:204) 
    at org.eclipse.persistence.internal.jpa.EntityManagerFactoryDelegate.createEntityManagerImpl(EntityManagerFactoryDelegate.java:304) 
    at org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.createEntityManagerImpl(EntityManagerFactoryImpl.java:336) 
    at org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.createEntityManager(EntityManagerFactoryImpl.java:302) 
    at liquidator.util.external.csvimport.CsvImporter.initEntityManager(CsvImporter.java:42) 
    at liquidator.util.external.csvimport.CsvImporter.main(CsvImporter.java:28) 

Descriptor Exceptions: 
--------------------------------------------------------- 

Runtime Exceptions: 
--------------------------------------------------------- 


java.lang.NullPointerException 
    at org.eclipse.persistence.descriptors.TablePerClassPolicy.prepareOneToOneSelectionQuery(TablePerClassPolicy.java:166) 
    at org.eclipse.persistence.descriptors.TablePerClassPolicy.prepareSelectionQuery(TablePerClassPolicy.java:193) 
    at org.eclipse.persistence.descriptors.TablePerClassPolicy.prepareChildrenSelectionQuery(TablePerClassPolicy.java:113) 
    at org.eclipse.persistence.mappings.OneToOneMapping.initialize(OneToOneMapping.java:1176) 
    at org.eclipse.persistence.descriptors.ClassDescriptor.initialize(ClassDescriptor.java:3114) 
    at org.eclipse.persistence.internal.sessions.DatabaseSessionImpl.initializeDescriptors(DatabaseSessionImpl.java:673) 
    at org.eclipse.persistence.internal.sessions.DatabaseSessionImpl.initializeDescriptors(DatabaseSessionImpl.java:632) 
    at org.eclipse.persistence.internal.sessions.DatabaseSessionImpl.initializeDescriptors(DatabaseSessionImpl.java:568) 
    at org.eclipse.persistence.internal.sessions.DatabaseSessionImpl.postConnectDatasource(DatabaseSessionImpl.java:799) 
    at org.eclipse.persistence.internal.sessions.DatabaseSessionImpl.loginAndDetectDatasource(DatabaseSessionImpl.java:743) 
    at org.eclipse.persistence.internal.jpa.EntityManagerFactoryProvider.login(EntityManagerFactoryProvider.java:239) 
    at org.eclipse.persistence.internal.jpa.EntityManagerSetupImpl.deploy(EntityManagerSetupImpl.java:685) 
    at org.eclipse.persistence.internal.jpa.EntityManagerFactoryDelegate.getAbstractSession(EntityManagerFactoryDelegate.java:204) 
    at org.eclipse.persistence.internal.jpa.EntityManagerFactoryDelegate.createEntityManagerImpl(EntityManagerFactoryDelegate.java:304) 
    at org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.createEntityManagerImpl(EntityManagerFactoryImpl.java:336) 
    at org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.createEntityManager(EntityManagerFactoryImpl.java:302) 
    at liquidator.util.external.csvimport.CsvImporter.initEntityManager(CsvImporter.java:42) 
    at liquidator.util.external.csvimport.CsvImporter.main(CsvImporter.java:28) 


java.lang.NullPointerException 
    at org.eclipse.persistence.mappings.ForeignReferenceMapping.isLockableMapping(ForeignReferenceMapping.java:1092) 
    at org.eclipse.persistence.descriptors.ClassDescriptor.postInitialize(ClassDescriptor.java:3808) 
    at org.eclipse.persistence.internal.sessions.DatabaseSessionImpl.initializeDescriptors(DatabaseSessionImpl.java:687) 
    at org.eclipse.persistence.internal.sessions.DatabaseSessionImpl.initializeDescriptors(DatabaseSessionImpl.java:632) 
    at org.eclipse.persistence.internal.sessions.DatabaseSessionImpl.initializeDescriptors(DatabaseSessionImpl.java:568) 
    at org.eclipse.persistence.internal.sessions.DatabaseSessionImpl.postConnectDatasource(DatabaseSessionImpl.java:799) 
    at org.eclipse.persistence.internal.sessions.DatabaseSessionImpl.loginAndDetectDatasource(DatabaseSessionImpl.java:743) 
    at org.eclipse.persistence.internal.jpa.EntityManagerFactoryProvider.login(EntityManagerFactoryProvider.java:239) 
    at org.eclipse.persistence.internal.jpa.EntityManagerSetupImpl.deploy(EntityManagerSetupImpl.java:685) 
    at org.eclipse.persistence.internal.jpa.EntityManagerFactoryDelegate.getAbstractSession(EntityManagerFactoryDelegate.java:204) 
    at org.eclipse.persistence.internal.jpa.EntityManagerFactoryDelegate.createEntityManagerImpl(EntityManagerFactoryDelegate.java:304) 
    at org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.createEntityManagerImpl(EntityManagerFactoryImpl.java:336) 
    at org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.createEntityManager(EntityManagerFactoryImpl.java:302) 
    at liquidator.util.external.csvimport.CsvImporter.initEntityManager(CsvImporter.java:42) 
    at liquidator.util.external.csvimport.CsvImporter.main(CsvImporter.java:28) 

[EL Config]: connection: 2014-11-28 12:40:52.183--ServerSession(2146583186)--Connection(486777790)--Thread(Thread[main,5,main])--disconnect 
[EL Finer]: cache: 2014-11-28 12:40:52.183--ServerSession(2146583186)--Thread(Thread[main,5,main])--initialize identitymaps 
[EL Info]: connection: 2014-11-28 12:40:52.183--ServerSession(2146583186)--Thread(Thread[main,5,main])--file:/C:/Users/Péter/workspace/applicLiquidator.trunk/target/classes/_liquidator logout successful 
[EL Config]: connection: 2014-11-28 12:40:52.183--ServerSession(2146583186)--Connection(1860920268)--Thread(Thread[main,5,main])--disconnect 
[EL Severe]: ejb: 2014-11-28 12:40:52.183--ServerSession(2146583186)--Thread(Thread[main,5,main])--Local Exception Stack: 
Exception [EclipseLink-0] (Eclipse Persistence Services - 2.5.1.v20130918-f2b9fc5): org.eclipse.persistence.exceptions.IntegrityException 
Descriptor Exceptions: 
--------------------------------------------------------- 

Runtime Exceptions: 
--------------------------------------------------------- 

java.lang.NullPointerException 

java.lang.NullPointerException 

    at org.eclipse.persistence.internal.sessions.DatabaseSessionImpl.initializeDescriptors(DatabaseSessionImpl.java:696) 
    at org.eclipse.persistence.internal.sessions.DatabaseSessionImpl.initializeDescriptors(DatabaseSessionImpl.java:632) 
    at org.eclipse.persistence.internal.sessions.DatabaseSessionImpl.initializeDescriptors(DatabaseSessionImpl.java:568) 
    at org.eclipse.persistence.internal.sessions.DatabaseSessionImpl.postConnectDatasource(DatabaseSessionImpl.java:799) 
    at org.eclipse.persistence.internal.sessions.DatabaseSessionImpl.loginAndDetectDatasource(DatabaseSessionImpl.java:743) 
    at org.eclipse.persistence.internal.jpa.EntityManagerFactoryProvider.login(EntityManagerFactoryProvider.java:239) 
    at org.eclipse.persistence.internal.jpa.EntityManagerSetupImpl.deploy(EntityManagerSetupImpl.java:685) 
    at org.eclipse.persistence.internal.jpa.EntityManagerFactoryDelegate.getAbstractSession(EntityManagerFactoryDelegate.java:204) 
    at org.eclipse.persistence.internal.jpa.EntityManagerFactoryDelegate.createEntityManagerImpl(EntityManagerFactoryDelegate.java:304) 
    at org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.createEntityManagerImpl(EntityManagerFactoryImpl.java:336) 
    at org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.createEntityManager(EntityManagerFactoryImpl.java:302) 
    at liquidator.util.external.csvimport.CsvImporter.initEntityManager(CsvImporter.java:42) 
    at liquidator.util.external.csvimport.CsvImporter.main(CsvImporter.java:28) 

Descriptor Exceptions: 
--------------------------------------------------------- 

Runtime Exceptions: 
--------------------------------------------------------- 


java.lang.NullPointerException 
    at org.eclipse.persistence.descriptors.TablePerClassPolicy.prepareOneToOneSelectionQuery(TablePerClassPolicy.java:166) 
    at org.eclipse.persistence.descriptors.TablePerClassPolicy.prepareSelectionQuery(TablePerClassPolicy.java:193) 
    at org.eclipse.persistence.descriptors.TablePerClassPolicy.prepareChildrenSelectionQuery(TablePerClassPolicy.java:113) 
    at org.eclipse.persistence.mappings.OneToOneMapping.initialize(OneToOneMapping.java:1176) 
    at org.eclipse.persistence.descriptors.ClassDescriptor.initialize(ClassDescriptor.java:3114) 
    at org.eclipse.persistence.internal.sessions.DatabaseSessionImpl.initializeDescriptors(DatabaseSessionImpl.java:673) 
    at org.eclipse.persistence.internal.sessions.DatabaseSessionImpl.initializeDescriptors(DatabaseSessionImpl.java:632) 
    at org.eclipse.persistence.internal.sessions.DatabaseSessionImpl.initializeDescriptors(DatabaseSessionImpl.java:568) 
    at org.eclipse.persistence.internal.sessions.DatabaseSessionImpl.postConnectDatasource(DatabaseSessionImpl.java:799) 
    at org.eclipse.persistence.internal.sessions.DatabaseSessionImpl.loginAndDetectDatasource(DatabaseSessionImpl.java:743) 
    at org.eclipse.persistence.internal.jpa.EntityManagerFactoryProvider.login(EntityManagerFactoryProvider.java:239) 
    at org.eclipse.persistence.internal.jpa.EntityManagerSetupImpl.deploy(EntityManagerSetupImpl.java:685) 
    at org.eclipse.persistence.internal.jpa.EntityManagerFactoryDelegate.getAbstractSession(EntityManagerFactoryDelegate.java:204) 
    at org.eclipse.persistence.internal.jpa.EntityManagerFactoryDelegate.createEntityManagerImpl(EntityManagerFactoryDelegate.java:304) 
    at org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.createEntityManagerImpl(EntityManagerFactoryImpl.java:336) 
    at org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.createEntityManager(EntityManagerFactoryImpl.java:302) 
    at liquidator.util.external.csvimport.CsvImporter.initEntityManager(CsvImporter.java:42) 
    at liquidator.util.external.csvimport.CsvImporter.main(CsvImporter.java:28) 


java.lang.NullPointerException 
    at org.eclipse.persistence.mappings.ForeignReferenceMapping.isLockableMapping(ForeignReferenceMapping.java:1092) 
    at org.eclipse.persistence.descriptors.ClassDescriptor.postInitialize(ClassDescriptor.java:3808) 
    at org.eclipse.persistence.internal.sessions.DatabaseSessionImpl.initializeDescriptors(DatabaseSessionImpl.java:687) 
    at org.eclipse.persistence.internal.sessions.DatabaseSessionImpl.initializeDescriptors(DatabaseSessionImpl.java:632) 
    at org.eclipse.persistence.internal.sessions.DatabaseSessionImpl.initializeDescriptors(DatabaseSessionImpl.java:568) 
    at org.eclipse.persistence.internal.sessions.DatabaseSessionImpl.postConnectDatasource(DatabaseSessionImpl.java:799) 
    at org.eclipse.persistence.internal.sessions.DatabaseSessionImpl.loginAndDetectDatasource(DatabaseSessionImpl.java:743) 
    at org.eclipse.persistence.internal.jpa.EntityManagerFactoryProvider.login(EntityManagerFactoryProvider.java:239) 
    at org.eclipse.persistence.internal.jpa.EntityManagerSetupImpl.deploy(EntityManagerSetupImpl.java:685) 
    at org.eclipse.persistence.internal.jpa.EntityManagerFactoryDelegate.getAbstractSession(EntityManagerFactoryDelegate.java:204) 
    at org.eclipse.persistence.internal.jpa.EntityManagerFactoryDelegate.createEntityManagerImpl(EntityManagerFactoryDelegate.java:304) 
    at org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.createEntityManagerImpl(EntityManagerFactoryImpl.java:336) 
    at org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.createEntityManager(EntityManagerFactoryImpl.java:302) 
    at liquidator.util.external.csvimport.CsvImporter.initEntityManager(CsvImporter.java:42) 
    at liquidator.util.external.csvimport.CsvImporter.main(CsvImporter.java:28) 

[EL Finest]: jpa: 2014-11-28 12:40:52.183--ServerSession(2146583186)--Thread(Thread[main,5,main])--End deploying Persistence Unit liquidator; session file:/C:/Users/Péter/workspace/applicLiquidator.trunk/target/classes/_liquidator; state DeployFailed; factoryCount 1 
Exception in thread "main" javax.persistence.PersistenceException: Exception [EclipseLink-28019] (Eclipse Persistence Services - 2.5.1.v20130918-f2b9fc5): org.eclipse.persistence.exceptions.EntityManagerSetupException 
Exception Description: Deployment of PersistenceUnit [liquidator] failed. Close all factories for this PersistenceUnit. 
Internal Exception: Exception [EclipseLink-0] (Eclipse Persistence Services - 2.5.1.v20130918-f2b9fc5): org.eclipse.persistence.exceptions.IntegrityException 
Descriptor Exceptions: 
--------------------------------------------------------- 

Runtime Exceptions: 
--------------------------------------------------------- 

java.lang.NullPointerException 

java.lang.NullPointerException 

    at org.eclipse.persistence.internal.jpa.EntityManagerSetupImpl.createDeployFailedPersistenceException(EntityManagerSetupImpl.java:820) 
    at org.eclipse.persistence.internal.jpa.EntityManagerSetupImpl.deploy(EntityManagerSetupImpl.java:760) 
    at org.eclipse.persistence.internal.jpa.EntityManagerFactoryDelegate.getAbstractSession(EntityManagerFactoryDelegate.java:204) 
    at org.eclipse.persistence.internal.jpa.EntityManagerFactoryDelegate.createEntityManagerImpl(EntityManagerFactoryDelegate.java:304) 
    at org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.createEntityManagerImpl(EntityManagerFactoryImpl.java:336) 
    at org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.createEntityManager(EntityManagerFactoryImpl.java:302) 
    at liquidator.util.external.csvimport.CsvImporter.initEntityManager(CsvImporter.java:42) 
    at liquidator.util.external.csvimport.CsvImporter.main(CsvImporter.java:28) 
Caused by: Exception [EclipseLink-28019] (Eclipse Persistence Services - 2.5.1.v20130918-f2b9fc5): org.eclipse.persistence.exceptions.EntityManagerSetupException 
Exception Description: Deployment of PersistenceUnit [liquidator] failed. Close all factories for this PersistenceUnit. 
Internal Exception: Exception [EclipseLink-0] (Eclipse Persistence Services - 2.5.1.v20130918-f2b9fc5): org.eclipse.persistence.exceptions.IntegrityException 
Descriptor Exceptions: 
--------------------------------------------------------- 

Runtime Exceptions: 
--------------------------------------------------------- 

java.lang.NullPointerException 

java.lang.NullPointerException 

    at org.eclipse.persistence.exceptions.EntityManagerSetupException.deployFailed(EntityManagerSetupException.java:238) 
    ... 8 more 
Caused by: Exception [EclipseLink-0] (Eclipse Persistence Services - 2.5.1.v20130918-f2b9fc5): org.eclipse.persistence.exceptions.IntegrityException 
Descriptor Exceptions: 
--------------------------------------------------------- 

Runtime Exceptions: 
--------------------------------------------------------- 

java.lang.NullPointerException 

java.lang.NullPointerException 

    at org.eclipse.persistence.internal.sessions.DatabaseSessionImpl.initializeDescriptors(DatabaseSessionImpl.java:696) 
    at org.eclipse.persistence.internal.sessions.DatabaseSessionImpl.initializeDescriptors(DatabaseSessionImpl.java:632) 
    at org.eclipse.persistence.internal.sessions.DatabaseSessionImpl.initializeDescriptors(DatabaseSessionImpl.java:568) 
    at org.eclipse.persistence.internal.sessions.DatabaseSessionImpl.postConnectDatasource(DatabaseSessionImpl.java:799) 
    at org.eclipse.persistence.internal.sessions.DatabaseSessionImpl.loginAndDetectDatasource(DatabaseSessionImpl.java:743) 
    at org.eclipse.persistence.internal.jpa.EntityManagerFactoryProvider.login(EntityManagerFactoryProvider.java:239) 
    at org.eclipse.persistence.internal.jpa.EntityManagerSetupImpl.deploy(EntityManagerSetupImpl.java:685) 
    ... 6 more

источник

2014-11-28 czupe

Я не уверен на 100%, но разве вы не должны устанавливать InheritanceType только в корневой Entity? – luuksen

Пробовал уже (но спасибо), исключение одно и то же. – czupe

Насколько я вижу, в вашей стратегии наследования нет ничего плохого. Можете ли вы попытаться использовать другого поставщика jpa, например Hibernate/OpenJPA, и подтвердить, не работает ли он? Мне кажется, что это может быть просто проблема затмения. Eclipselink может запутаться при указании имени таблицы и стратегии TABLE_PER_CLASS. Вы можете удалить явное имя таблицы, чтобы подтвердить сценарий тоже, и пусть поставщик jpa генерирует имена таблиц (для теста, конечно) – maress

Есть у зонда использовать одно значение дискриминатора для унаследованных таблиц ?, например:

@DiscriminatorColumn(name="TYPE", 
        discriminatorType=DiscriminatorType.STRING) <== In the the super class 
@DiscriminatorValue("FileEntity") 
FileEntity 

@DiscriminatorValue("Document ") 
Document

источник

2014-11-28 13:28:05 Azimuts

Я думаю, что DiscriminatorValue и Column не имеют смысла, когда я выбираю стратегию наследования NABLE TABLE_PER_CLASS. Если я прав, стратегия SINGLE_TABLE использует Дискриминатор. – czupe

Второе Наследование уровень в JPA с TABLE_PER_CLASS

ответ

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