ObjectDB ObjectDB

Internal Website Search

181-190 of 200 resultsRefresh
54

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
54

does ObjectDB / JPA support simple password field encryption of an entity class?

We are persisting certain passwords entered by user in a form binded with an entity. Is there any direct ObjectDB support to just encrypt the password field? We would like to either encrypt or make ... have one or two passwords field of an entity to protect. Appreciate any suggestions, Thanks. shkraju Hari
54

Changing existing objects from Entity to Embedded

of another Entity. So as first try I changed only the metadata to this: <jdo> <package name ... (entity classes) or embeddable. To use embedded objects you must declare classes as embeddable
54

Exception after update of indices of Entity class

Hello, I changed the index definition of an entity class from @Index()... to @Indices() and now I get the following stacktrace upon start: Exception in thread "ODB-IndexActivation" java.lang ... .related"}) }) public class Event extends Entity {     @Embedded     private Recurrence
54

How to pass a list in query for a list field of entity.

I have a entity as bellow :- @Entity @Table(name = "agent") public class Agent implements Serializable { @Id @GeneratedValue(strategy = GenerationType.AUTO) private Long Id; private List<SocialMedia> SocialMedias; public Agent() { } public Long
54

JPQL keyword in entity - what to do?

Hi, I have a problem with entity that is using one of JPQL keywords as one of the fields. It's a 'type' field. When I try to build a query that looks for example like this: select new ResultData(p ... and so on in my entities? lwalkowski Lukasz Walkowski It seems as an ObjectDB bug
10

An entityManager.flush() with many entities is not possible

The following exception occures if we call entityManager.flush() where the corresponding JPA PersistenceContext has many entities and relations. What is the reason for the exception? entityManager ... found a simple example to reproduce this exception. The entity model of the flushed JPA
10

Collision Between Different Schema Versions of Entity Classes

Version 2.8.4 fixes a critical bug that in rare cases may cause collision between different schema versions of entity classes, when schemas have changes many times (usually more than 20 times). This bug mainly affects queries on hierarchy of multiple entity classes (i.e. a query on a super class
10

NullPointer when accessing entity field

) at eu.ysoft.safeq.core.cache.entity.CacheableJobInfo.__odbGet_id(CacheableJobInfo.java:1) at eu.ysoft.safeq.core.cache.entity.CacheableJobInfo.getPrimaryKey(CacheableJobInfo.java:828) at eu.ysoft
10

Post-compile enhancement sometimes causes error in generic loops: incompatible types found: java.lang.Object: required: Entity

over an @entity type I get a generics error. The generic for loop is: for (Steel s: this.steelMaterials ... required: com.example.entity.Steel for (Steel s: this.steelMaterials.getL_Steel().getEls

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.

Need Help?

  1. Search ObjectDB website
  2. Read the FAQ
  3. Follow the Tutorials
  4. View or post in the forum
  5. Search or file an issue
  6. Contact support