About Object Database

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Forum
12

Speed of queries that return many objects

a standard database (or object database) activity. The main idea of a database is that large amount of data ... if this is something I should investigate. So I created a database with 1_000_000 dummy entities (example ... and tuning it could be in the range of 1-2 seconds. The overhead of preparing entity objects
Issue
12

new objects not available in mappedBy associations

when the object is retrieved from the database again. Try to refresh the department object ... already contains a value - it will not be run again unless the object is retrieved again from the database ... > employees;   creating a new mapped class, e.g. new Employee, won't result in this object being available in
Forum
12

Entity listener - event instead of object

entity from database to check for difference in object fields? It should be something like creating ... in updated entity. There is a problem however with accessing "old" version of object stored in database. I can't find the nice way to use EntityManager in EntityListener. Because of that, I can't
Manual
12

Chapter 6 - Configuration

The ObjectDB configuration file contains one root element with seven subelements: ... <database> ... database> ... ... ... ... ...
Manual
12

Index Definition

Querying without indexes requires iteration over entity objects in the database one by one. This may take a significant amount of time if many entity objects have to be examined. Using proper indexes ... . When an entity object is stored in the database every indexed field must contain either null or
Forum
12

2.7.3_03 Erroneous "Attempt to modify a primary key of a managed object"

and is the primary key used to save/restore the object into/out of the database.  Another user might try ... key of a managed object", but my application is not trying to change the primary key.  (ObjectDB ... of the id field. You should be able to change the id field to a simple String without database schema
Tutorial
12

Step 3: Define a Spring DAO Component

Operations on the database will be performed by an instance of a Data Access Object (DAO ... - for storing a new Guest entity object in the database. getAllGuests - for retrieving all the existing Guest objects from the database. By using Spring components we can move some work from
Tutorial
12

Step 3: Define a Spring DAO Component

Operations on the database will be performed by an instance of a Data Access Object (DAO ...  Guest entity object in the database. getAllGuests - for retrieving all the existing Guest objects ... .annotation.Transactional; @Component public class GuestDao { // Injected database connection
Manual
12

Chapter 1 - Quick Tour [2010-10-29]

on how to start using JPA in your IDE with the ObjectDB object database. Given the simplicity of ObjectDB, that should be quick and easy even for a novice. ... ObjectDB databases and perform basic CRUD operations (Create/Store, Retrieve, Update and Delete) on ObjectDB databases. The example program that this chapter presents manages a simple database
Manual
12

Chapter 1 - Quick Tour

on how to start using JPA in your IDE with the ObjectDB object database. Given the simplicity of ObjectDB, that should be quick and easy even for a novice. ... ObjectDB databases and perform basic CRUD operations (Create/Store, Retrieve, Update and Delete) on ObjectDB databases. The example program that this chapter presents manages a simple database