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3

Multi-tenant capability with hierarchies

must be selected dynamically like getDBForTenant(String tenantId). Is this possible or
3

ObjectDB version 2.3 has been released

dynamic type" exception. Fixed a bug in query plans that use an inherited index. Fixed bugs in
3

Schema-Update: Rename superclass and remove one subclass

Hello, we renamed a superclass and removed one of the subclass. If we then try to open the Database (with ObjectDB-Explorer) we get a "Failed to generate dynamic type ..." Small Example: Generate Database public static void main(String[] args) { EntityManagerFactory emf = Persistence
3

@Convert is not supported?

dynamically), if I didnt explain the problem clear enough please let me know. This will actually help
3

slow performance for a complex query

Hi, We have a query that is constructed dynamically, an example is like this: SELECT DISTINCT $1 FROM CDI $1, Organisation $2, Organisation $3 WHERE ((UPPER($1.cdiId) LIKE 'THREAD14%') AND ((($1.parentOrgId='news') OR (($1.parentOrgId=$2.organisationId) AND ($2.parentOrgId='news'))) OR ((($1
3

Programatic configuration or configuration file loaded from classpath or file

Hi! I found information about the configuration of ObjectDB: https://www.objectdb.com/java/jpa/setting. However, I have a dynamic environment and don't want to place the configuration file in the filesystem. I would like to enable the level2 cache for all entities: https://www.objectdb.com/java/jpa
3

Specify location of persistence.xml

and generate persistence units dynamically for every tested combination of a DBMS and a JPA implementation. support Support
3

Object as parameter results in exception

to be small, and irrelevant for criteria queries which are dynamic (i.e. the query structure changes
3

Help with 'not like/lower' query

Hi all, Honestly, I'm fairly new with JPA2 Criteria queries - but as far as code effort goes, it has saved me a bit of pain. I'm writing a dynamic query builder (only 1 level deep for basic entities) - but even though I get most queries to work, I am getting the following error. This is using
3

locks on pure query activities

analyzing the dynamic behavior we can see from the thread dump that a lot of our threads that are just doing simple queries (just selects, no update or delete ...) show locks like these (question is: why there are locks and how could we get rid of that): log1: "qtp1523553211-271" #271 prio=5

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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