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Questions tagged [eclipselink]

EclipseLink delivers a comprehensive open-source Java persistence solution. EclipseLink focuses on standards (JPA, JAXB, SDO) with advanced features, performance and scalability for enterprise software developers across data sources, formats, and containers.

EclipseLink delivers a comprehensive open-source Java persistence solution. EclipseLink focuses on standards (JPA, JAXB, SDO) with advanced features, performance and scalability for enterprise software developers across data sources, formats, and containers.

5055 questions
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EM can not resolve configured mapping [EclipseLink-197]

I have a problem with resolving entities during entity manager startup. Now it falls with following error: Exception [EclipseLink-197] (Eclipse Persistence Services - 2.5.2.v20140319-9ad6abd): org.eclipse.persistence.exceptions.DescriptorException…
akle
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JPA @Enumerated Error

I have a Entity with a field which I want to be an Enum. @Column(name = "TEMPRATURE_ZONE") @Enumerated(STRING) private TemperatureRegime tempratureZone; The Enum is defined as follows: public enum TemperatureRegime { AMBIENT, CHILL } The…
James
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Integer.longValue() does throw an Exception if not assigned to Number first

public Long getId() { Some code ... TypedQuery query = entityManager.createQuery(sQuery, Long.class); return query.getSingleResult(); } From this code i get a ClassCastException from Integer to Long. I checked…
kai
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JPA metamodel and @Convert on a List attribute

I'm exploring the possibilities of using the JPA metamodel with the Criteria API. I have some entities that have attributes like this: @Column( name = "defaultValue" ) @Convert( converter = StringListToStringConverter.class ) private List…
Hein Blöd
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EclipseLink equivalent of Hibernate @NaturalID

I haven't worked until today with EclipseLink and I don't seem to able to find a @NaturalId. So what is the equivalent of Hibernate's @NaturalId in EclipseLink ? import javax.persistence.CascadeType; import javax.persistence.Embedded; import…
user3719857
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JPA : Delete object from unidirectional many-to-many relationship

I have a unidirectional relation between two entities and I want to remove property object from join table only. I tried this but it only removes the property object from template and not from database join table. How can I remove it from join…
gabi
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"Persistence xml file was not found. NO GENERATION will occur!!" error in build.xml

I am receiving the error [javac] Note: The persistence xml file [META-INF/persistence.xml] was not found. NO GENERATION will occur!! Please ensure a persistence xml file is available either from the CLASS_OUTPUT directory [META-INF/persistence.xml]…
Dumpcats
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JPA Unknown entity type Exception

@Entity @Table(name = "persons") public class Person implements Serializable { @Id @GeneratedValue(strategy = GenerationType.IDENTITY) @Basic(optional = false) @Column(name = "id") private Integer id; …
john.p.doe
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Injection of EJB in EntityListener via CDI fails (JPA 2.1)

I am trying to inject a @Stateless EJB into my EntityListner. The @PrePresist method of my EntityListener is invoked, but the injected EJB resolves to null so a NullPointerException is thrown. public class MyEntityListener { @Inject …
stg
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many-to-many relationship with composite key in jpa

I defined a many-to-many relation between two entities with a composite key. The problem is that when I get the join object it is filtered with only one side of the relation and not both side. The picture makes the problem clearer. Here what im…
gabi
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Merging Detached JPA Entities Ignoring Unmodified Fields

Short version: Is there a way to tell JPA to ignore null properties of a detached entity instance when merging? Long version: I Have the following scenario: Web Application communicates through HTTP REST with Backend. Backend uses JAX-B, JAX-RS,…
Andrés Esguerra
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No [EntityType] was found for the key class [] in the Metamodel - please verify that the [Entity] class was referenced in persistence.xml

java.lang.IllegalArgumentException: No [EntityType] was found for the key class [] in the Metamodel - please verify that the [Entity] class was referenced in persistence.xml using a specific property or a global…
Saa Satyam
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JPA EclispeLink Insert/Persist replaces null list with emptylist

I have two Entities Person and PersonImage: @Entity public class Person { .... @OneToMany(mappedBy = "person", cascade = { CascadeType.PERSIST, CascadeType.REMOVE }, orphanRemoval = true, fetch = FetchType.LAZY) private…
Jehan Zeb
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java RestFull get current user in action thread

I need to get the current user in JPA EntityListener, in a restful webservice. This is my code: Service Web: @POST @Produces({"application/json"}) @Consumes({"application/json"}) public Response create(@HeaderParam("Authorization") String…
Miguel Cicha
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EclipseLink @CascadeOnDelete behavior

I'd like to comment about a situation that happened with me today when I was using EclipseLink-JPA. I'll show what was the context and how I solved my issue, but I confess I do not understood what happened. Consider the following mapping: class A { …
Paulo Júnior
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