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6

EntityTransaction.commit() does not release a pessimistic lock

.setDetachAllOnCommit(true); In this case entity objects will be detached and unlocked on transaction commit. support Support
6

Mapped (Inverse) LAZY @OneToMany vs. Unmapped LAZY @OneToMany

by setting unloaded collections to null on detachment, for both mapped an unmapped collections. support Support
6

Lock prevents PersistenceManager.close when retainValues = false

for detachment during a PersistenceManager close operation. The retainValues == false mode affects commit
6

Merge Issue: Attempt to reuse an existing primary key value

, #4), merge is not really needed. It may be better to use merge only to attach detached objects
6

ObjectDB 2.6.9_06 (embedded): Cascading merge resulting in duplicate objects

related to any other entity in the database. In explorer I can see that the "detached" entity
1

ObjectDB 2.3.7

Fixed a critical issue that may cause database corruption (issue #630). Initial attempt to enable navigation through lazy loading from detached objects (feature request #326). Improved toString of criteria queries to use aliases (issue #127). Fixed automatic variable naming in criteria queries
1

ObjectDB 2.8.3

elements are detached. Improved handling query results that include managed hollow objects. Removed
1

ObjectDB 2.8.2

Added support of deleting classes in the Explorer. Improved memory cleaning when entity objects with embeddable elements are detached. Improved handling query results that include managed hollow objects. Removed false alarms by the Doctor. Fixed a deadlock (issue #2512) on closing EntityManager

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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