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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 ... loading association from the database, when it needs it (without any merge call). From doug clarke
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9

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

.getAssignements().get(a11pk); assertEquals(p1, a11.getProject()); But: Question 1: After my test, the database ... 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
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9

Object belongs to another EntityManager - ERROR

a record in database [ObjectDB 2.4.6_13] javax.persistence.RollbackException 10:29:14,880 ERROR [stderr] (http--10.23.3.98-8081-5) Failed to commit transaction: Object 'pbdmodel.impl.OrgJedinicaImpl ... .UserException: Object 'pbdmodel.impl.OrgJedinicaImpl#8' belongs to another EntityManager 10:29:15,072
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9

Example database world.odb

! The attached program exports data from the World database to the standard output in JSON format. You will need google-gson in order to run it. Thanks a lot! How to save to World database persistent objects ... Hello! Where can I find classes for example database world.odb? Thanks for the answer.   The source
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8

Attempt to refresh a non managed entity object (error 635)

.IllegalArgumentException Attempt to refresh a non managed entity object (error 635) Nothing changed in my code ... with Intellij's JPA database explorer, which required me to use a JPA persistence.xml configuration file ... entity object, i.e. a new entity object that has not been persisted yet, or a detached entity object (e
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how to persist an object twice into two diff. collections of two diff. classes

ok my problem,    i persist a Squad Object into a Cup Object at the beginning, after i have to create and persist a competition object in which i have to put some of the already created/persisted ... .java:259) at ch.hsr.gymtastic.technicalServices.database.DBConnection.commit(DBConnection.java:46
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8

Is it ok to put list or map of embeddable objects in entity ?

Hi, Is it ok to put list or map of embeddable objects in entity? I mean, for example : @Entity ... >()) on an entity that had some Class_B instances in bList? Will they be deleted correctly from database ... X not found". I found an option to put a classpath for persistence objects and metadata, where I
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8

Object Relations Error after Schema Change

, until a user that still has the old version of the class accesses the database. Please verify ... database to another ObjectDB database, we think starting with a new DB would help resolve ... . Could you please check the database with the ObjectDB Doctor and post the output? In addition, you can try migrating
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8

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
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8

Benchmark native JPA of Versant database (without datanucleous)

Now Versant DB (db4o commercial) has JPA implementation    Can you benchmark this Object Oriented DB to compare with Object DB? Since the Versant Object Database (unlike db4o) is not open source it would be impossible to include it in the JPAB benchmark results without the consent of Versant