Manipulation d'objets entite avec EntityManager

DADOUQUEEN Messages postés 5 Date d'inscription Statut Membre Dernière intervention -
KX Messages postés 16761 Date d'inscription Statut Modérateur Dernière intervention - 1 déc. 2015 à 21:01

Bonjour, j'ai developpé une petite application javaSE,sous netbeans, j'ai crée des classes àn partir de la base (JPA: eclipseLink), mais lors de l'execution l'erreur suivante m'a gené SVP qui peut m'aider

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KX Messages postés 16761 Date d'inscription Statut Modérateur Dernière intervention 3 020

Bonjour,

Ça aurait été plus simple que tu copies-colles l'exception plutôt que mettre une impression écran...

En plus l'erreur est pour le moins explicite : tu as associé l'attribut salary avec un type int avec une colonne de type Blob ce qui est incompatible.

Remarque : la JPA c'est déjà du Java EE...La confiance n'exclut pas le contrôle

DADOUQUEEN Messages postés 5 Date d'inscription Statut Membre Dernière intervention

j'ai modifié le type de salaire mais l'erreur persiste et si je clique sur (SimpleJPAA.java:29) le curseur est posé sur la ligne suivante :

EntityManagerFactory emf=javax.persistence.Persistence.createEntityManagerFactory("SimpleJPAAPU");

run:
Exception in thread "main" Local Exception Stack: 
Exception [EclipseLink-30005] (Eclipse Persistence Services - 2.5.2.v20140319-9ad6abd): org.eclipse.persistence.exceptions.PersistenceUnitLoadingException
Exception Description: An exception was thrown while searching for persistence archives with ClassLoader: sun.misc.Launcher$AppClassLoader@10b4b2f
Internal Exception: javax.persistence.PersistenceException: Exception [EclipseLink-28018] (Eclipse Persistence Services - 2.5.2.v20140319-9ad6abd): org.eclipse.persistence.exceptions.EntityManagerSetupException
Exception Description: Predeployment of PersistenceUnit [SimpleJPAAPU] failed.
Internal Exception: Exception [EclipseLink-7164] (Eclipse Persistence Services - 2.5.2.v20140319-9ad6abd): org.eclipse.persistence.exceptions.ValidationException
Exception Description: The type [class long] for the attribute [salary] on the entity class [class entity.Emp] is not a valid type for a lob mapping. For a lob of type BLOB, the attribute must be defined as a java.sql.Blob, byte[], Byte[] or a Serializable type. For a lob of type CLOB, the attribute must be defined as a java.sql.Clob, char[], Character[] or String type.
 at org.eclipse.persistence.exceptions.PersistenceUnitLoadingException.exceptionSearchingForPersistenceResources(PersistenceUnitLoadingException.java:127)
 at org.eclipse.persistence.jpa.PersistenceProvider.createEntityManagerFactoryImpl(PersistenceProvider.java:107)
 at org.eclipse.persistence.jpa.PersistenceProvider.createEntityManagerFactory(PersistenceProvider.java:177)
 at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:79)
 at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:54)
 at simplejpaa.SimpleJPAA.main(SimpleJPAA.java:29)
Caused by: javax.persistence.PersistenceException: Exception [EclipseLink-28018] (Eclipse Persistence Services - 2.5.2.v20140319-9ad6abd): org.eclipse.persistence.exceptions.EntityManagerSetupException
Exception Description: Predeployment of PersistenceUnit [SimpleJPAAPU] failed.
Internal Exception: Exception [EclipseLink-7164] (Eclipse Persistence Services - 2.5.2.v20140319-9ad6abd): org.eclipse.persistence.exceptions.ValidationException
Exception Description: The type [class long] for the attribute [salary] on the entity class [class entity.Emp] is not a valid type for a lob mapping. For a lob of type BLOB, the attribute must be defined as a java.sql.Blob, byte[], Byte[] or a Serializable type. For a lob of type CLOB, the attribute must be defined as a java.sql.Clob, char[], Character[] or String type.
 at org.eclipse.persistence.internal.jpa.EntityManagerSetupImpl.createPredeployFailedPersistenceException(EntityManagerSetupImpl.java:1954)
 at org.eclipse.persistence.internal.jpa.EntityManagerSetupImpl.predeploy(EntityManagerSetupImpl.java:1945)
 at org.eclipse.persistence.internal.jpa.deployment.JPAInitializer.callPredeploy(JPAInitializer.java:98)
 at org.eclipse.persistence.jpa.PersistenceProvider.createEntityManagerFactoryImpl(PersistenceProvider.java:96)
 ... 4 more
Caused by: Exception [EclipseLink-28018] (Eclipse Persistence Services - 2.5.2.v20140319-9ad6abd): org.eclipse.persistence.exceptions.EntityManagerSetupException
Exception Description: Predeployment of PersistenceUnit [SimpleJPAAPU] failed.
Internal Exception: Exception [EclipseLink-7164] (Eclipse Persistence Services - 2.5.2.v20140319-9ad6abd): org.eclipse.persistence.exceptions.ValidationException
Exception Description: The type [class long] for the attribute [salary] on the entity class [class entity.Emp] is not a valid type for a lob mapping. For a lob of type BLOB, the attribute must be defined as a java.sql.Blob, byte[], Byte[] or a Serializable type. For a lob of type CLOB, the attribute must be defined as a java.sql.Clob, char[], Character[] or String type.
 at org.eclipse.persistence.exceptions.EntityManagerSetupException.predeployFailed(EntityManagerSetupException.java:230)
 ... 8 more
Caused by: Exception [EclipseLink-7164] (Eclipse Persistence Services - 2.5.2.v20140319-9ad6abd): org.eclipse.persistence.exceptions.ValidationException
Exception Description: The type [class long] for the attribute [salary] on the entity class [class entity.Emp] is not a valid type for a lob mapping. For a lob of type BLOB, the attribute must be defined as a java.sql.Blob, byte[], Byte[] or a Serializable type. For a lob of type CLOB, the attribute must be defined as a java.sql.Clob, char[], Character[] or String type.
 at org.eclipse.persistence.exceptions.ValidationException.invalidTypeForLOBAttribute(ValidationException.java:1132)
 at org.eclipse.persistence.internal.jpa.metadata.converters.LobMetadata.process(LobMetadata.java:124)
 at org.eclipse.persistence.internal.jpa.metadata.accessors.mappings.MappingAccessor.processLob(MappingAccessor.java:1707)
 at org.eclipse.persistence.internal.jpa.metadata.accessors.mappings.BasicAccessor.processLob(BasicAccessor.java:524)
 at org.eclipse.persistence.internal.jpa.metadata.accessors.mappings.MappingAccessor.processMappingConverter(MappingAccessor.java:1771)
 at org.eclipse.persistence.internal.jpa.metadata.accessors.mappings.MappingAccessor.processMappingValueConverter(MappingAccessor.java:1796)
 at org.eclipse.persistence.internal.jpa.metadata.accessors.mappings.BasicAccessor.process(BasicAccessor.java:419)
 at org.eclipse.persistence.internal.jpa.metadata.MetadataDescriptor.processMappingAccessors(MetadataDescriptor.java:1536)
 at org.eclipse.persistence.internal.jpa.metadata.accessors.classes.ClassAccessor.processMappingAccessors(ClassAccessor.java:1648)
 at org.eclipse.persistence.internal.jpa.metadata.accessors.classes.EntityAccessor.processMappingAccessors(EntityAccessor.java:1234)
 at org.eclipse.persistence.internal.jpa.metadata.accessors.classes.EntityAccessor.process(EntityAccessor.java:697)
 at org.eclipse.persistence.internal.jpa.metadata.MetadataProject.processStage2(MetadataProject.java:1793)
 at org.eclipse.persistence.internal.jpa.metadata.MetadataProcessor.processORMMetadata(MetadataProcessor.java:576)
 at org.eclipse.persistence.internal.jpa.deployment.PersistenceUnitProcessor.processORMetadata(PersistenceUnitProcessor.java:585)
 at org.eclipse.persistence.internal.jpa.EntityManagerSetupImpl.predeploy(EntityManagerSetupImpl.java:1869)
 ... 6 more
Java Result: 1
BUILD SUCCESSFUL (total time: 10 seconds)

KX Messages postés 16761 Date d'inscription Statut Modérateur Dernière intervention 3 020

Tu as changé le type int en long mais le problème est le même, ce n'est pas compatible avec une colonne de type blob. C'est marqué dans ta log d'erreur :

Description: The type [class long] for the attribute [salary] on the entity class [class entity.Emp] is not a valid type for a lob mapping.
For a lob of type BLOB, the attribute must be defined as a java.sql.Blob, byte[], Byte[] or a Serializable type. For a lob of type CLOB, the attribute must be defined as a java.sql.Clob, char[], Character[] or String type.

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