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10

Object DB vs EclipseLink/TopLink: Unloaded relationships in detached entities

a FETCH JOIN as described here: Detach JPA objects with lazy initialized properties This has the big ... .eclipse.org/mhonarc/lists/eclipselink-users/msg05258.html: Detached Objects get the connection need ... their proxies to retrieve additional dettached instances. If the object was detached through serialization
Forum
10

Object explorer cannot open odb file. ObjectDB many-to-many relationship

get an Assignement object from User object and Underlying object (but not through theirs keys). I'd like to work with typed object in the code whenever possible, and make key usage as transparent as possible
Issue
10

Sort of very large objects - out of memory

the following actions: 1) Create 5 persist threads which create and persist a large object in a loop 100 times each 2) Create 5 get threads which read 100 objects each in a loop based on object ... processing mechanism in sorting very large objects. This requires a fix, but meanwhile, adding a composite
Forum
10

Query can't see recently persisted object

does not appear to present a read consistent view of persisted objects within the same transaction. e ... . However if I call flush() on the EntityManager after the persist() the object will be found. Clearly ... the transaction. Is there a way of using or configuring ObjectDB to ensure read consistency of objects persisted
Forum
10

First query before any of the object has been stored

I have some code that, before writing an object via ObjectDB makes a query to ensure the new object is different from what's already stored.  The problem is that, before any instances of that object ... some other persistence related exception.  How can I know if any of an object has been stored
Forum
10

Changing existing objects from Entity to Embedded

-only, made a migration utility which read the original objects, converted them to the new classes and stored ... this matter. Is the change of not-embedded to embedded supported by ObjectDB for existing objects ... . To use embedded objects you must declare classes as embeddable (rather than the reference fields as in
Forum
10

Does aggregate function "greatest" work on entity objects?

Does aggregate function "greatest" work on entity objects? do not come to the function "compareTo ... static final long serialVersionUID = 1L; @Override public int compareTo(Object t ... .DialogItem[ id=" + getId() + " ]"; } } Thanks for your help. Entity objects are not comparable
Forum
10

Embedding Managed Entities in Embedded Objects = bad idea

Discovered that you can't embed entities in embeddable objects if the entity is managed. Haven't tried embedding un-managed entities in embeddable objects, though I imagine that's not a great idea. The the error message isn't all that obvious (attempting to persist object which already has an id
Forum
10

How to define database structure and insert some initial objects from scratch

the initial database structure of our application? We know objectdb is all about objects and probably doesn't ... , however, could be simple. Just build your entity objects and persist them. e.g. public class Main {     public ... .createEntityManager();         // Store 1000 Point objects in the database:         em.getTransaction().begin
Issue
10

New entity objects are duplicated on merge cascading

When merge is cascaded to a new entity object that has not been persisted ... managed ..." exception, when the duplicated object is referenced from another new / dirty entity object by a reference with cascading persist disabled. The following test case demonstrates