About entities

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Forum
13

Support of modifying an ObjectDB Entity class (Schema Change)

If you modify an ObjectDB Entity class will it be supported by a database set up using the old class? I already have an idea to iterate through a database, getting each record and then creating ... if ObjectDB can already handle changes to Entity classes. Please see my StackOverflow question
Forum
13

Update entity without first opening a transaction

Hi everyone, I want to update an entity in my program without having to open a transaction, do the modifications and commit the transaction. I want to have a managed entity that is in sync with my database. So when I got a Person class and I do person.setName("John"), the name in my database
Issue
12

Collection update does not increase entity version and is not persisted

Hello, I found a bug when adding elements to a collection of Entities: Event { Collection attachments; void addAttachment(Attachment attachment) { this.attachments.add(attachment); } } Attachment { String filename } If I call this method
Forum
12

How do I Remove an entity from the Database ?

Hi I no longer want to use an Entity .. (in SQL terms the whole Table ) ... How do I delete it ?   Thanks Paul Newman Currently classes cannot be removed but this only affects the list of classes in the Explorer. Removing of classes will be supported in the future. pnewman
Forum
12

How to create dynamic Entity class.

();     Object entity = myCls.newInstance(); Now it is working.      Thank You. Bimal
Forum
12

How to define Default Entity Listeners without persistence.xml and orm.xml

I am using JPA programaticaly..ie without xml file, and i would like to define Default Entity Listeners. How to do ? Here my init code: Properties config = new Properties(); config.put("javax.persistence.provider", "com.objectdb.jpa.Provider"); config.put("javax.persistence.jdbc.url", "objectdb
Forum
12

How to delete a specific column data form a entity.

I have a entity class named Agent having fields Id,Name,Code,Skill ...etc. I wants to delete only the Skill from a row so I use Query like "Delete a.Skill from Agent a where a.Id = 112" but It gives error like "Unexpected query token 'agsk' (FROM is expected)". How to resolve it. Thank You DELETE
Forum
12

Internal objectdb error when open a database or open an entity manager

we get following exception when we open a database or open an entity manager   Exception in thread "ODB IndexActivation" [ObjectDB 2.6.6_06] Unexpected exception (Error 990) Generated by Java HotSpot(TM) 64-Bit Server VM 1.8.0_51 (on Windows 7 6.1). Please report this error on http://www
Forum
12

Is it possible get the All PrimKeys for a given entity class in the DB?

. Anyway, adding @Id field doesn't duplicate storage. The field is initialized each time the entity object
Forum
12

NPE after an @embedded obj is updated for a detached entity

I have an entity that looks like this: class User {     @embedded private Profile profile;     ... } After running something like this:     User user = entityManager.createQuery("select......     entityManager.detach(user);     user.getProfile().setDescription("Something... I