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101

ClassCastException on SELECT NEW ... after UPDATE over Java RMI

internally runs SELECT NEW ... queries. For example: SELECT NEW com.arunta.base.db.FileNameDTO(r ... NEW ...) and UPDATE JPQL queries on the DB via the RMI interface. What we noticed is that once we UPDATE a record from the client (via the RMI interface), all SELECT NEW ... queries
99

Database is erased after deploying a new web application version

Hello, I'm a new ObjectDB user and currently working on a Java web application that's running within Tomcat and uses ObjectDB. Each time I upload a new version of the web application (WAR file) and deploy it from Tomcat's manager, I get a new empty database. I assume there is a way (possibly
99

DB Doctor sets type to "unknown" for new fields

Hi, we are using ObjectDB 2.5.4_04 on Linux. We added two new Boolean fields to a persistable type ... for the two new fields fail. Suggestions? Thank you Emil prolancer Emil Andonov Nothing is wrong with the database, and the new Boolean fields look fine. Apparently your report indicates an Explorer behavior
99

Compare old and new schema

" the entity classes have in the old database file and compare that with the new classes definitions ... to the new one. However, you can open the old database in the Explorer (without entity classes in ... and an automatic comparison of old schema vs new schema is the only reliable way of making sure database
99

Error 990... and then new version?

.objectdb.com/database/issue/new com.objectdb.o.InternalException: null com.objectdb.o ... I was about to post (here, since the provided url is restricted), I noticed there was a new release! I hadn't noticed this because the maven instructions still show the old version, and the new
20

objectdb-2.6.9_06: Extended Persistence Context fails: 'Attempt to begin a new transaction when a transaction is active'

with extended Persistence Context? [EDIT: 2006-09-29 New improved version of test mini web app with test mode ... ._PersistenceException: Attempt to begin a new transaction when a transaction is active at com.sun.ejb ... owner, String name) { try { Project p = new Project(owner, name
20

Tracking changes to new collections (in enhancement mode) after flush

Hello, We have an issue with a list as a value in a hashmap. Within one transaction a new key-value ... HashMap<String, List<ModelElementImpl>> mappingMap = new HashMap<>(1); (edited) btc_es BTC ... ();         ListInMap entity = new ListInMap();         em.persist(entity);         entity.addValue
5

InheritanceStrategy.NEW_TABLE

Enum Constant javax.jdo.annotations.InheritanceStrategy NEW_TABLE Since: JDO 2.1
5

ObjectState.PERSISTENT_NEW_DELETED

Enum Constant javax.jdo.ObjectState PERSISTENT_NEW_DELETED Since: JDO 1.0
5

ObjectState.PERSISTENT_NEW

Enum Constant javax.jdo.ObjectState PERSISTENT_NEW Since: JDO 1.0

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.

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