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Manual
18

JPA Lifecycle Events

(added to the EntityManager). @PostPersist - after storing a new entity in the database (during commit or flush). @PostLoad - after an entity has been retrieved from the database. @PreUpdate ... the database (during commit or flush). @PreRemove - when an entity is marked for removal in
Issue
17

Explorer bug ? Objects seem to be missing from database in Class view, but are present as references

) We see that 2 Project objects were created, however in the database Explorer it lists size=0 for Project class ... because it appears to be either database integrity corruption, or it just looks like ... . When the project runs it logs creation of objects. Please note that there are 2 Project objects, and note
Forum
17

how to operate with same object but two different Thread on database.

operation with that same object and same database. --------- So, point is two different operation, two different thread,one object(we can assume one table in sql), one database. if it will possible ... with its own EntityManager has a private persistence context, i.e. the same database object
Forum
17

Is ObjectDB the only object database that supports JPA?

Other Object database doesn't support JPA?   JPA is designed as an API for Object Relational Mapping (ORM), so many JPA features cannot be supported by regular object databases. For example, user ... ), which are not supported by most object databases. ObjectDB does support these features.  Some object
Forum
17

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 ... .createEntityManager();         // Store 1000 Point objects in the database:         em.getTransaction().begin ... jdbc driver for ETL software like Kettle? How about migrating data from another database
Issue
17

Object DB Explorer fails to open database

. The code runs fine. i.e. Role objects are getting persisted in the database. But when I try to open the database using Object DB Explorer, it fails.  I have attached all the related files.  Regards, Md ... with it. Again the code runs fine but Object DB Explorer fails to open the database.  All the related
Forum
16

How to access database object to my application.

is without using tostring method. like a independent object and database. Thank you. Unfortunately ... Hi, I want to access a object which contains some value like id,name,college and address. Here it returns some address but i am not getting object value, i attach 3 java program below, please check
Forum
16

A few questions on object database design

I've been trying to model a database that stores data in an MMORPG. With ObjectDB, a lot of things ... outperforms a lot of other conventional table-oriented databases, but I'm wondering ... entities, then it seems like we are back to the table-oriented databases' design principles
Manual
16

Setting and Tuning of JPA Queries

since the setter methods in Query and TypedQuery support method chaining (by returning the query object on which they were invoked). Flush Mode (setFlushMode) Changes made to a database using an EntityManager ... . Therefore, before a query is executed, uncommitted database changes (if any) have to be flushed to the database in
Manual
15

Server Configuration

to the database (as explained in the JPA Overview section in chapter 3). The max attribute specifies ... , path, which specifies the location of ObjectDB databases that the server manages. The $objectdb ... of an ObjectDB server is similar to the document root directory of a web server. Every database file