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FAQ
3

Where can I learn how to use ObjectDB?

The best source for learning ObjectDB is the ObjectDB Manual, which contains all the necessary information for using ObjectDB. The only required background is a good understanding of the Java language. Reading the manual and getting started with ObjectDB could be easier for developers with prior
Result
3

Upgrade from ObjectDB 1.0

The following pages should be read by ObjectDB 1.0 users: If you need help in upgrading your application from version 1.0 to version 2.0 - please feel free to contact ObjectDB Support.
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3

ObjectDB 2.x Downloads

Please read the ObjectDB licence page.   ObjectDB runtime jars are available also on the Maven Repository.
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3

Posting to ObjectDB Website - Important Instructions

Please read the following instructions carefully - before posting to the ObjectDB website. 1. Where to Post Almost everything should be posted to the ObjectDB Forum - and not as an help desk support ticket or as an issue. The exceptions are: Clear ObjectDB bugs, such as unexpected exception thrown
JPA Doc
3

JPA Reference (JavaDoc)

order to learn how to use JPA and ObjectDB please read the ObjectDB manual.
Forum
3

Optimistic locking: prevent version increment on entity collection attribute

the application (web app), I create the readings in one call and I try to read them in another call. I checked the database and all the entities are created (document and readings) but when I try to get the collection of readings null is returned. I have tried to clear the entity manager in the second
Forum
3

"Attempt to lock a non entity object" error

Probably a simple answer for someone who's been using ObjectDB for awhile: I'm reading objects from ... (),       LockModeType.PESSIMISTIC_WRITE); . . } //doEdit ... );         em.lock(p, LockModeType.PESSIMISTIC_WRITE);         System.out.println("After find
Forum
3

OptimisticLockException

. Also have the Explorer open Questions: a) what is it about? b) is there a setting for pessimistic mode? In my app, I ... is available in the manual. I guess I should read doco more. I ran into the same error from a pessimistically locked entity (global tracking id generator, specific to internal requirement) - and got
JDO Doc
3

javax.jdo.Transaction

getNontransactionalRead() If true, allows persistent instances to be read without a transaction active. If true, allows persistent instances to be read without a transaction active. Returns: the value ... of low to high are: read-uncommitted read-committed repeatable-read snapshot serializable Parameters
JPA Doc
2

getResultList()

- if pessimistic locking fails and the transaction is rolled back LockTimeoutException - if pessimistic