About field

release

2.5.3

... mapped (inverse) to-many relationship into an array field ([]) ( issue #195 ). Fixed a bug in loading mapped ... Fixed a bug in loading reference primary key field of an abstract type. Fixed JDO sequence names to be fully ...

 
release

2.4.6

... merging). Fixed a bug in using a collection field index in queries. Fixed query plan selection for queries with boolean indexed field. Fixed a NullPointerException on Doctor run that ...

 
manual

Locking in JPA

Explains how to use optimistic locking and pessimistic locking in JPA.... internally but can be exposed by defining a version field . During commit commit() EntityTransaction's ... by default in ObjectDB, regardless if a version field (which is required by some ORM JPA providers) is defined in the entity ...

 
release

2.5.2

... mapped (inverse) to-many relationship into an array field ([]) ( issue #195 ). Fixed a bug in loading mapped ... Fixed a bug in loading reference primary key field of an abstract type. Fixed JDO sequence names to be fully ...

 
api-jpa

AccessType.FIELD

Field-based access is used.(Enum Constant of javax.persistence.AccessType)

 
release

2.4.7

... merging). Fixed a bug in using a collection field index in queries. Fixed query plan selection for queries with boolean indexed field. Fixed a NullPointerException on Doctor run that ...

 
manual

Retrieving JPA Entity Objects

Explains how to use JPA to retrieve entity objects from the database.... is usually unacceptable. A persistent reference field can be excluded from this automatic cascaded retrieval by using a lazy ... that the retrieval operation is cascaded through the field. Explicitly specifying FetchType javax.persistence.FetchType ...

 
api-jpa

javax.persistence.Version

Specifies the version field or property of an entity class that serves as its optimistic lock value.(Annotation of JPA)

 
api-jpa

javax.persistence.Enumerated

Specifies that a persistent property or field should be persisted as a enumerated type.(Annotation of JPA)

 
api-jpa

javax.persistence.Transient

Specifies that the property or field is not persistent.(Annotation of JPA)