[JPA] [Embeddable] DescriptorCustomizer pour héritage

**Stessy** · 01/10/2015, 16h20

Bonjour,

J'ai une entité dans laquelle j'ai une classe Embedded.
Cette embedded classe est elle-même une classe abstraite.

Dans la spec il est mentionné que l'héritage n'est pas supporté pour des classes embeddedable mais qu'il est malgré tout possible de l'implémenter via un customizer.

C'est ce que j'ai mis en place mais lors du lancement de mes tests unitaires, je me prend cette exception

Code :

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javax.persistence.PersistenceException: Exception [EclipseLink-28019] (Eclipse Persistence Services - 2.5.2.v20140319-9ad6abd): org.eclipse.persistence.exceptions.EntityManagerSetupException
Exception Description: Deployment of PersistenceUnit [be.buyway.phenix.DossierDAOUnitTest] failed. Close all factories for this PersistenceUnit.
Internal Exception: Exception [EclipseLink-0] (Eclipse Persistence Services - 2.5.2.v20140319-9ad6abd): org.eclipse.persistence.exceptions.IntegrityException
Descriptor Exceptions: 
---------------------------------------------------------
 
Exception [EclipseLink-108] (Eclipse Persistence Services - 2.5.2.v20140319-9ad6abd): org.eclipse.persistence.exceptions.DescriptorException
Exception Description: Cannot find value in class indicator mapping in parent descriptor [null].
Descriptor: RelationalDescriptor(be.buyway.business.dto.credential.visibilityscope.AbstractVisibilityScopeSpecification --> [DatabaseTable(VISIBILITY_SCOPE)])
 
Runtime Exceptions: 
---------------------------------------------------------
 
	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 be.buyway.business.granting.dao.DossierDAOUnitTest.setup(DossierDAOUnitTest.java:48)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:606)
	at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47)
	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44)
	at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:24)
	at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:271)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:70)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)
	at org.junit.runners.ParentRunner$3.run(ParentRunner.java:238)
	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63)
	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236)
	at org.junit.runners.ParentRunner.access$000(ParentRunner.java:53)
	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:229)
	at org.junit.runners.ParentRunner.run(ParentRunner.java:309)
	at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:86)
	at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:459)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:675)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)
Caused by: Exception [EclipseLink-28019] (Eclipse Persistence Services - 2.5.2.v20140319-9ad6abd): org.eclipse.persistence.exceptions.EntityManagerSetupException
Exception Description: Deployment of PersistenceUnit [be.buyway.phenix.DossierDAOUnitTest] failed. Close all factories for this PersistenceUnit.
Internal Exception: Exception [EclipseLink-0] (Eclipse Persistence Services - 2.5.2.v20140319-9ad6abd): org.eclipse.persistence.exceptions.IntegrityException
Descriptor Exceptions: 
---------------------------------------------------------
 
Exception [EclipseLink-108] (Eclipse Persistence Services - 2.5.2.v20140319-9ad6abd): org.eclipse.persistence.exceptions.DescriptorException
Exception Description: Cannot find value in class indicator mapping in parent descriptor [null].
Descriptor: RelationalDescriptor(be.buyway.business.dto.credential.visibilityscope.AbstractVisibilityScopeSpecification --> [DatabaseTable(VISIBILITY_SCOPE)])
 
Runtime Exceptions: 
---------------------------------------------------------
 
	at org.eclipse.persistence.exceptions.EntityManagerSetupException.deployFailed(EntityManagerSetupException.java:238)
	... 30 more
Caused by: Exception [EclipseLink-0] (Eclipse Persistence Services - 2.5.2.v20140319-9ad6abd): org.eclipse.persistence.exceptions.IntegrityException
Descriptor Exceptions: 
---------------------------------------------------------
 
Exception [EclipseLink-108] (Eclipse Persistence Services - 2.5.2.v20140319-9ad6abd): org.eclipse.persistence.exceptions.DescriptorException
Exception Description: Cannot find value in class indicator mapping in parent descriptor [null].
Descriptor: RelationalDescriptor(be.buyway.business.dto.credential.visibilityscope.AbstractVisibilityScopeSpecification --> [DatabaseTable(VISIBILITY_SCOPE)])
 
Runtime Exceptions: 
---------------------------------------------------------
 
	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.login(DatabaseSessionImpl.java:756)
	at org.eclipse.persistence.internal.jpa.EntityManagerFactoryProvider.login(EntityManagerFactoryProvider.java:241)
	at org.eclipse.persistence.internal.jpa.EntityManagerSetupImpl.deploy(EntityManagerSetupImpl.java:685)
	... 28 more

Voici ce que j'ai mis en place

L'entité

Code java :

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@Entity
@Access(AccessType.FIELD)
@Table(name = "VISIBILITY_SCOPE")
public class PhysicalRetailerVisibilityScope {
 
    @Id
    @Column(name = "SCOPE_NAME")
    private String name;
 
    @Column(name = "SPECIFICATION_TYPE", nullable = false)
    @Embedded
    private AbstractVisibilityScopeSpecification specification;

La classe embedded

Code java :

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@Embeddable
@Customizer(VisibilityScopeSpecificationCustomizer.class)
public abstract class AbstractVisibilityScopeSpecification {
 
    protected abstract Predicate toPredicate(Join<?, ?> join, CriteriaQuery<?> cq, CriteriaBuilder cb);
 
}

Le customizer pour la classe parent

Code java :

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public class VisibilityScopeSpecificationCustomizer implements DescriptorCustomizer {
 
    @Override
    public void customize(final ClassDescriptor descriptor) throws Exception {
        descriptor.getInheritancePolicy().setSingleTableStrategy();
        descriptor.getInheritancePolicy().setClassIndicatorFieldName("SPECIFICATION_TYPE");
        descriptor.getInheritancePolicy().addClassIndicator(CarrefourGroupVisibilityScopeSpecification.class, "CARREFOUR_GROUP_SPEC");
    }
 
}

la classe enfant

Code java :

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@Embeddable
@Customizer(CarrefourGroupVisibilityScopeSpecificationCustomizer.class)
public class CarrefourGroupVisibilityScopeSpecification extends AbstractVisibilityScopeSpecification {
 
    private static final String[] UNNEEDED_CARREFOUR_VENDORS = new String[] { "2688372", "2491314", "2685071", "2689636", "2700656", "2689123",
        "2066181" };
 
    @Override
    protected Predicate toPredicate(final Join<?, ?> join, final CriteriaQuery<?> cq, final CriteriaBuilder cb) {
        Predicate carrefourShopPredicate = cb.equal(join.get("union").get("number"), UnionConstants.CARREFOUR_SHOPS);
        Predicate auto5Predicate = cb.equal(join.get("chain").get("number"), ChainConstants.Id.AUTO5);
        Predicate notRADPredicate = cb.notEqual(join.get("positionCodes").get("currentPosition"), "RAD");
        Predicate unneededShopsPredicate = cb.not(join.get("number").in(Arrays.asList(UNNEEDED_CARREFOUR_VENDORS)));
        Predicate toPredicate = cb.and(cb.or(carrefourShopPredicate, auto5Predicate), notRADPredicate, unneededShopsPredicate);
        return toPredicate;
    }
 
}

et enfin le customizer pour la classe enfant

Code java :

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public class CarrefourGroupVisibilityScopeSpecificationCustomizer implements DescriptorCustomizer {
 
    @Override
    public void customize(final ClassDescriptor descriptor) throws Exception {
        descriptor.getInheritancePolicy().setParentClass(AbstractVisibilityScopeSpecification.class);
    }
 
}

Si quelqu'un a une quelconque idée, elle est la bienvenue.

Merci pour votre aide

**Stessy** · 02/10/2015, 13h20

Bonjour,

j'ai légèrement avancé.

Maintenant vient le problème de la persistance de la nouvelle entité.

Code de test

Code java :

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private PhysicalRetailerVisibilityScope createCarrefourGroupPhysicalRetailerVisibilityScope() {
        PhysicalRetailerVisibilityScope scope = new PhysicalRetailerVisibilityScope("CARREFOUR_GROUP",
            new CarrefourGroupVisibilityScopeSpecification());
        scope = this.visibilityScopeDAO.merge(scope);
        return scope;
    }

Voici l'erreur qui m'est remontée:

Code :

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Local Exception Stack: 
Exception [EclipseLink-126] (Eclipse Persistence Services - 2.5.2.v20140319-9ad6abd): org.eclipse.persistence.exceptions.DescriptorException
Exception Description: No subclass matches this class [class be.buyway.business.dto.credential.visibilityscope.CarrefourGroupVisibilityScopeSpecification] for this Aggregate mapping with inheritance.
Mapping: org.eclipse.persistence.mappings.AggregateObjectMapping[specification]
Descriptor: RelationalDescriptor(be.buyway.business.dto.credential.visibilityscope.PhysicalRetailerVisibilityScope --> [DatabaseTable(VISIBILITY_SCOPE)])
	at org.eclipse.persistence.exceptions.DescriptorException.noSubClassMatch(DescriptorException.java:1122)
	at org.eclipse.persistence.mappings.AggregateObjectMapping.getReferenceDescriptor(AggregateObjectMapping.java:1219)
	at org.eclipse.persistence.mappings.AggregateMapping.getReferenceDescriptor(AggregateMapping.java:503)
	at org.eclipse.persistence.mappings.AggregateMapping.getObjectBuilder(AggregateMapping.java:439)
	at org.eclipse.persistence.mappings.AggregateMapping.buildBackupClonePart(AggregateMapping.java:134)
	at org.eclipse.persistence.mappings.AggregateMapping.buildBackupClone(AggregateMapping.java:123)
	at org.eclipse.persistence.internal.descriptors.ObjectBuilder.buildBackupClone(ObjectBuilder.java:606)
	at org.eclipse.persistence.descriptors.changetracking.DeferredChangeDetectionPolicy.buildBackupClone(DeferredChangeDetectionPolicy.java:227)
	at org.eclipse.persistence.internal.sessions.RepeatableWriteUnitOfWork.cloneAndRegisterNewObject(RepeatableWriteUnitOfWork.java:612)
	at org.eclipse.persistence.internal.sessions.MergeManager.registerObjectForMergeCloneIntoWorkingCopy(MergeManager.java:1097)
	at org.eclipse.persistence.internal.sessions.MergeManager.mergeChangesOfCloneIntoWorkingCopy(MergeManager.java:557)
	at org.eclipse.persistence.internal.sessions.MergeManager.mergeChanges(MergeManager.java:313)
	at org.eclipse.persistence.internal.sessions.UnitOfWorkImpl.mergeCloneWithReferences(UnitOfWorkImpl.java:3521)
	at org.eclipse.persistence.internal.sessions.RepeatableWriteUnitOfWork.mergeCloneWithReferences(RepeatableWriteUnitOfWork.java:384)
	at org.eclipse.persistence.internal.sessions.UnitOfWorkImpl.mergeCloneWithReferences(UnitOfWorkImpl.java:3481)
	at org.eclipse.persistence.internal.jpa.EntityManagerImpl.mergeInternal(EntityManagerImpl.java:542)
	at org.eclipse.persistence.internal.jpa.EntityManagerImpl.merge(EntityManagerImpl.java:519)
	at be.buyway.persistence.AbstractDAOImpl.merge(AbstractDAOImpl.java:277)
	at be.buyway.business.granting.dao.PhysicalRetailerCredentialDAOUnitTest.createCarrefourGroupPhysicalRetailerVisibilityScope(PhysicalRetailerCredentialDAOUnitTest.java:188)
	at be.buyway.business.granting.dao.PhysicalRetailerCredentialDAOUnitTest.createNewCarrefourAnsFinancialAdvisorPhysicalRetailerCredentialDto(PhysicalRetailerCredentialDAOUnitTest.java:181)
	at be.buyway.business.granting.dao.PhysicalRetailerCredentialDAOUnitTest.setup(PhysicalRetailerCredentialDAOUnitTest.java:66)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:606)
	at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47)
	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44)
	at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:24)
	at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:271)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:70)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)
	at org.junit.runners.ParentRunner$3.run(ParentRunner.java:238)
	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63)
	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236)
	at org.junit.runners.ParentRunner.access$000(ParentRunner.java:53)
	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:229)
	at org.junit.runners.ParentRunner.run(ParentRunner.java:309)
	at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:86)
	at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:459)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:675)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)

Et voici la hiérarchie de mes entités

Code java :

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@Entity
@Access(AccessType.FIELD)
@Table(name = "VISIBILITY_SCOPE")
public class PhysicalRetailerVisibilityScope implements BaseEntity<String> {
 
    @Id
    @Column(name = "SCOPE_NAME")
    private String name;
 
    @Embedded
    private AbstractVisibilityScopeSpecification specification;

Code java :

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@Embeddable
@Inheritance(strategy = InheritanceType.SINGLE_TABLE)
@Customizer(VisibilityScopeSpecificationCustomizer.class)
public abstract class AbstractVisibilityScopeSpecification {
 
    protected abstract Predicate toPredicate(Join<?, ?> join, CriteriaQuery<?> cq, CriteriaBuilder cb);
 
}

Code java :

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@Embeddable
@Customizer(CarrefourGroupVisibilityScopeSpecificationCustomizer.class)
public class CarrefourGroupVisibilityScopeSpecification extends AbstractVisibilityScopeSpecification {
 
    private static final String[] UNNEEDED_CARREFOUR_VENDORS = new String[] { "2688372", "2491314", "2685071", "2689636", "2700656", "2689123",
        "2066181" };
 
    @Override
    protected Predicate toPredicate(final Join<?, ?> join, final CriteriaQuery<?> cq, final CriteriaBuilder cb) {
        Predicate carrefourUnionPredicate = cb.equal(join.get("union").get("number"), UnionConstants.CARREFOUR_SHOPS);
        Predicate carrefourChainPredicate = cb.equal(join.get("chain").get("number"), ChainConstants.Id.CARREFOUR);
        Predicate carrefourGroupPredicate = cb.equal(join.get("group").get("number"), GroupConstants.CARREFOUR_CARDS_GROUP);
        Predicate auto5Predicate = cb.equal(join.get("chain").get("number"), ChainConstants.Id.AUTO5);
        Predicate notRADPredicate = cb.notEqual(join.get("positionCodes").get("currentPosition"), "RAD");
        Predicate unneededShopsPredicate = cb.not(join.get("number").in(Arrays.asList(UNNEEDED_CARREFOUR_VENDORS)));
        Predicate toPredicate = cb.and(cb.or(cb.and(carrefourUnionPredicate, carrefourChainPredicate, carrefourGroupPredicate), auto5Predicate),
            notRADPredicate, unneededShopsPredicate);
        return toPredicate;
    }
 
}

Code java :

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public class CarrefourGroupVisibilityScopeSpecificationCustomizer implements DescriptorCustomizer {
 
    @Override
    public void customize(final ClassDescriptor descriptor) throws Exception {
        descriptor.getInheritancePolicy().setParentClass(AbstractVisibilityScopeSpecification.class);
    }
 
}

Code java :

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public class VisibilityScopeSpecificationCustomizer implements DescriptorCustomizer {
 
    @Override
    public void customize(final ClassDescriptor descriptor) throws Exception {
        descriptor.getInheritancePolicy().setSingleTableStrategy();
        DatabaseField indicatorField = new DatabaseField();
        indicatorField.setName("specification");
        indicatorField.setLength(255);
        indicatorField.setType(java.lang.String.class);
        descriptor.getInheritancePolicy().setClassIndicatorField(indicatorField);
        descriptor.getInheritancePolicy().useClassNameAsIndicator();
        descriptor.getInheritancePolicy().setClassIndicatorFieldName("SPECIFICATION_TYPE");
        descriptor.getInheritancePolicy().addClassIndicator(CarrefourGroupVisibilityScopeSpecification.class, "CARREFOUR_GROUP_SPEC");        
    }
 
}

Merci pour votre aide.

[JPA] [Embeddable] DescriptorCustomizer pour héritage

JPA Java

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