About Object Database

121-130 of 200Refresh
Forum
9

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
Forum
8

Queries are slow on a large database

out: how to get the total number of object in a database without retrieving everything? Alternatively ... Hi, I have a 12GB database with 787603 entries. It is much larger than usual ... have to scan the entire database file and is not using indexes. Therefore I think I am not doing
Issue
8

InternalException - error reading field from "queue" database

guess the problem is actually on writting the objects to the db. Running the database ... that is missing in this database. What do you store in that field? entity objects? embeddable objects? serializable objects? Did you use that specific database in replication? Maybe this is related
Forum
8

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
Forum
8

Searching lists within objects

want to search using cb.isMember passing an object. This however does NOT work. I'm uncertain how the database is doing its matching, but it looks to me like it matches using objectids, which means you can only match isMember if you have a database object. This does not help as I'm never going
Forum
8

Listing large number of complicated objects with paging.

all objects in database: In the case ... - there was OutOfMemory exception thrown by database - maybe by creating 55k ProductListTO() objects? I ... 'Product' (attached to this post) entities in database and I'm trying to speed listing them with paging
Issue
8

cannot delete objects after crash (see issue 2283)

after the crash we cannot delete specific objects, see screenshots of explorer. Database ... objectdb  meanwhile the database became completely unusable, we had to stop and run the Doctor. Find ... of the recovery failure is still in progress. we upload currently the database before Doctor
Forum
8

Database Inconsistency or corruption

entity. 2-) Problem Description I initialized the database with some ObjectValues. Persisting new ... part of the log file. Before the update operation, I dump the properties of the object I want to update ... , isPersisted:=true ... After the update Operation I also dump the properties of the object. ObjectValue ID
Tutorial
8

Step 2: Define a JPA Entity Class

To store objects in an ObjectDB database using JPA we need to define an entity class: Open the [New Java Class] dialog box, e.g. by right clicking the tutorial package node (in the [Projects] window ... ("(%d, %d)", this.x, this.y); } } The new class should represent Point objects in the database
Result
8

How to upgrade from ObjectDB 1.0?

the new Enhancer. Convert old database files using the ObjectDB converter: > java -jar converter.jar ... is more sensitive to failure to close a PersistenceManagerFactory. The database is closed ... . To use embedded objects you must declare classes as embeddable (rather than the reference fields