About collection

forum_thread

How storage works?

I have one Class Car that contains a ArrayList of Wheels. I have already one Car with 4 Wheels attached stored in the DB. If I update my Car adding a new Wheel object is all the Car updated? Or only changed part is updated? By other words, If I have one complex data model and only one part is changed, the Object DB stored the all complex data model or only the changed part? Thanks ... by ObjectDB again. When an element is added to a collection - only the owner side requires update. Therefore, if the collection is annotated as inverse (mapped by) the entity object in which ...

 
api-jdo

detachCopyAll(pcs)

Detach the specified instances from the PersistenceManager.(Method of javax.jdo.PersistenceManager)

 
api-jdo

javax.jdo.JDOHelper

This class can be used by a JDO-aware application to call the JDO behavior of PersistenceCapable instances without declaring them to be PersistenceCapable.(Class of JDO)

 
page

ObjectDB Object Database Features

ObjectDB provides a rich set of features, many of them as the result of supporting the JPA and JDO APIs.... ) indices. Collection and array elements are indexable (extremely fast JOIN queries). ... Collection types : Collection, List, Set, ArrayList, Vector, Stack, LinkedList, ArrayDeque, ...

 
forum_thread

@OrderColumn issue

Hi All, For some reason I'm not able to make the @OrderColumn annotation work. The test case is attached to the thread. Kind regards ... Specifies the ordering of the elements of a collection valued association or element collection at the point when the association or collection is retrieved. See ...

 
release

2.2.7

... strings in criteria queries. Fixed a bug in collection change tracking in a new entity object. Fixed merging ... JPA annotation Defines a collection of instances of a basic type or embeddable class. See JavaDoc ... Added support for serialization of inverse (mapped by) collection fields. Fixed some activations issues. ...

 
release

2.2.5

... strings in criteria queries. Fixed a bug in collection change tracking in a new entity object. Fixed merging ... JPA annotation Defines a collection of instances of a basic type or embeddable class. See JavaDoc ... Added support for serialization of inverse (mapped by) collection fields. Fixed some activations issues. ...

 
release

2.3.0

... database file suffixes. Changed fetch of collection elements. Fixed an ArrayIndexOutOfBoundsException ... strings in criteria queries. Fixed a bug in collection change tracking in a new entity object. Fixed merging ...

 
release

2.3.2

... Fixed a NullPointerException on using a collection in a detached object ( issue #72 ). ... database file suffixes. Changed fetch of collection elements. Fixed an ArrayIndexOutOfBoundsException ...

 
api-jpa

javax.persistence.metamodel.SetAttribute

Instances of the type SetAttribute represent persistent java.util.Set-valued attributes.(Interface of JPA)