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56

Duplicate Entity class names causes Exception in Query

I have two Entities which have the same class name but reside in different packages ... of one of these entities. If I execute that query I get an exception; Caused by: com.objectdb.o ... .... @Entity @NamedQueries({ @NamedQuery(name = "objdbTest.Singleton.getItem", query = "SELECT o
56

Need help to make this test work and define proper annotations for entities Lists

annotations on entities list, could anyone help me to define them? NB in this test case I didn't set all entities methods for the sake of clarity, also in actual application no field are public nor static and no entity is static. package testodb; import java.io.File; import java.io.Serializable
56

Entity Update - Is the documentation up to date?

suggests should not work. First, I've been modifying managed entities from outside an active ... automatically. Second, I'm using an array of entities inside another entity, and setting the elements ... entities from outside an active transaction. If I subsequently begin and commit a transaction
56

Help understanding Entity behavior with JPA

Hi Support, We have a entity with an @Id entity which we then put into a list and store in an different entity inside a field defined as: @OneToOne(orphanRemoval=true, cascade=CascadeType.ALL, fetch ... .ArrayList and it contains multitple entities with an the same id. the behavior we are seeing
56

"Attempt to lock a non entity object" error

and then doCancelEdit works fine. Second time I doEdit produces the error "Attempt to lock a non entity ... ------------------------------------------------------------- Attempt to lock a non entity object ... the entire persistence context and detach all managed entity objects: ... Rolling
56

Items in list are doubled, when the entity class is not enhanced

Dear all, I have a problem with adding items (entities) into other entity list. When the classes are not enhanced, added items are doubled. Here is an example: @Entity public class Customer ... and setters } @Entity public class Item implements Serializable { private static
56

Does ObjectDB create one instance of each entity class on (web app) load ?

web app with the NetBeans 8.2 Profiler. I can see that exactly one instance of each entity ... also checked am not loading any entities using JPA callbacks.) If I take a heap dump and inspect ... create an instance of each entity (and if so, under what circumstances) ? I
56

Accessiblity of attributes in entities in several OSGi-Bundles

Hello, we have a problem with enhanced entities. It is very important to solve this issue. There are three entities in two OSGi-Bundles and we execute importRequirements() in RequirementServiceImpl: __________________________________________________________ Bundle A: @Entity class
11

UPDATE SET Queries in JPA/JPQL

Existing entity objects can be updated, as explained in chapter 2, by: Retrieving the entity objects into an EntityManager. Updating the relevant entity object fields within an active transaction ... an alternative way of updating entity objects. Unlike SELECT queries, which are used to retrieve data from
11

Removed entities can be found by query in the same transaction

Hello, we opened a transaction, load an entity from database and removed this entity by em.remove(). Afterwards the entity can be load again by query although the resulted entity have an attribute __odbtracker/m (type STA, value=Persistent-Deleted-Flushed) which shows that the entity is deleted

Getting Started

ObjectDB is very easy to use. Follow the Getting Started Tutorial and the Quick Tour manual chapter and in minutes you may be able to write and run first Java programs against ObjectDB.

Prior knowledge or experience in database programming (SQL, JDBC, ORM, JPA, etc.) is not required, but some background in using the Java language is essential.

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