About class

forum_thread

JDO sequences from ORM file

I want to use sequences in JDO without using annotations. Normally this is done with a package-X.orm file, where X is a value passed to the PersistenceManagerFactory as the value of property "mapping". I'm encouraged to see that the JDO zip that comes with ObjectDB includes the DTD/XSD for this type of file, though I can't see a mention of it in the manual. ... "true" embedded-only = "false" /> <class name = "JdoTypes$PersistenceCapableClass" persistence-modifier = "persistence-capable" /> <class name = "JdoTypes$AbstractPersistenceCapableClass" /> ...

 
api-jpa

JPA Exceptions

Reference (JavaDoc) of the JPA exception classes, including PersistenceException, EntityExistsException, EntityNotFoundException, LockTimeoutException, NonUniqueResultException, NoResultException, OptimisticLockException, PessimisticLockException, QueryTimeoutException, RollbackException, TransactionRequiredException.... Exception Class Overview The root of the JPA exception class subtree is: javax.persistence.PersistenceException ... are represented directly by the PersistenceException class. Some specific errors are represented by subclasses of ...

 
api-jpa

javax.persistence.metamodel.MappedSuperclassType

Instances of the type MappedSuperclassType represent mapped superclass types.(Interface of JPA)

 
api-jpa

javax.persistence.metamodel.IdentifiableType

Instances of the type IdentifiableType represent entity or mapped superclass types.(Interface of JPA)

 
api-jpa

javax.persistence.AssociationOverride

Used to override a mapping for an entity relationship.(Annotation of JPA)

 
api-jdo

javax.jdo.annotations.PersistenceCapable

Annotation for whether the class or interface is persistence-capable.(Annotation of JDO)

 
manual

Index Definition

Describes how to define indexes in JPA entity classes and explains how indexes are used in JPQL queries.... JPA annotation Specifies that the class is an entity. See JavaDoc Reference Page... public class EntityWithSimpleIndex { @Index ... JPA annotation Specifies that the class is an entity. See JavaDoc Reference Page... @Index ...

 
forum_thread

BeanCreationException in spring data JPA with objectDB

Can anyone help me how to resolve the below issue ... from class org.springframework.data.util.ClassTypeInformation at ... from class org.springframework.data.util.ClassTypeInformation at ... from class org.springframework.data.util.ClassTypeInformation at ... from class ... from class ...

 
forum_thread

how explorer queries work

i'm curious as to how the explorer is able to execute queries when its obviously not aware of the object model that i built. the reason is because i have an application where i want to be able to execute somewhat generalized queries and i won't know what classes are in the object model ahead of time. this is especially curious to me in client-server mode since the .jar with the object model classes is on the server side, not the client side where explorer is running. ... Failed to deserialize (com.objectdb.o.HMP$F; local class incompatible: stream classdesc serialVersionUID = 7888310505984857729, local class serialVersionUID = ... java.io.InvalidClassException: com.objectdb.o.HMP$F; local class incompatible: stream classdesc serialVersionUID = 7888310505984857729, ...

 
manual

Auto Generated Values

Explains the different strategies for generating auto values (mainly for primary key fields) in JPA.... JPA annotation Specifies that the class is an entity. See JavaDoc Reference Page... public class EntityWithAutoId1 { @Id javax.persistence.Id ...