ObjectDB 2.4.0

Released on 2012-05-20 (see other available releases).

A newer version is available.

Use of ObjectDB is subject to the ObjectDB Licence. 

Changes in ObjectDB 2.4.0

• Added support of entity collections as query parameters.
• Added support of running ObjectDB within Eclipse 3.7 wrapper jar.
• Added support of sharing an identifier name for a variable and a parameter in the same query.
• Added support for using ObjectDB with GlassFish 3.1.2.
• Added handling missing classes in agent enhancement (by catching exceptions).
• Added automatic restart for failed connections on unexpected network failure.
• Improved temporary file management including avoiding permission collision.
• Improved BIRT support (issue #659).
• Improved evaluation of query plans that use composite indexes.
• Improved processing of queries with a large number of variables (issue #607).
• Improved toString of criteria queries to use aliases (issue #127).
• Changed non loaded collections on detachment to null (rather thanempty collections).
• Fixed a critical bug in handling a very large number of entity classes (issue #672).
• Fixed LockModeType.OPTIMISTIC (READ) by handling it as OPTIMISTIC_FORCE_INCREMENT.
• Fixed a bug in optimistic locking on find by using LockModeType.WRITE.
• Fixed exception when a named query doesn't exist to IllegalArgumentException.
• Fixed undeploying Glassfish 3.1.1 web application (by catching unexpected exception).
• Fixed LEFT [OUTER] JOIN issues (including on mapped by collections).
• Fixed object duplication on cascading merge (issue  #595).
• Fixed an InternalException in query execution (issue #739).
• Fixed a master server failure due to disconnecting a replicated slave server.
• Fixed NOT NULL handling for basic (non relationship) references.
• Fixed a bug in detecting orphan entities in reflection mode.
• Fixed a bug in listing inherited persistent fields (in the Metamodel API and in the Explorer).
• Fixed a bug in merging complex object graphs.
• Fixed a bug in not using LIKE's ESCAPE when an index is used.
• Fixed a bug in parsing time literals in queries.
• Fixed recovery from failure when the recovery file is empty (issue #695).
• Removed EntityManager conflict checks in NO DETACH mode.
• Fixed a bug in online backup of databases larger than 2GB.
• Fixed a bug in running queries between flush and commit.
• Fixed a deadlock (issue #450).
• Fixed another issue in implementing fake entity detachment (feature request #326).
• Fixed a bug in compilation of path expressions in queries.
• Fixed handling null values in JOIN and path expressions in queries.
• Fixed a possibly very slow query execution when using entity parameters.
• Fixed issues in navigation through detached objects.

See the full change log.

ObjectDB with Maven

To use ObjectDB in a Java Maven project add the ObjectDB repositpory and dependency to the pom.xml file.

Use Java 8 or above with the javax variant and Java 17 or above with the jakarta variant.

<repositories>
			...
	<repository>
		<id>objectdb</id>
		<name>ObjectDB Repository</name>
		<url>https://m2.objectdb.com</url>
	</repository>
			...
</repositories>
			...
<dependencies>
			...
	<dependency>
		<groupId>com.objectdb</groupId>
		<artifactId>objectdb</artifactId>
		<version>2.4.0</version>
	</dependency>
			...
</dependencies>

ObjectDB Development Kit

The ObjectDB Development Kit includes:

• The ObjectDB runtime JAR (available also on Maven).
• The GUI ObjectDB Explorer.
• Sample ObjectDB databases that you can open in the Explorer.
• Command line tools for running the ObjectDB Server and the ObjectDB Enhancer.
• A sample objectdb.conf configuration file.
• Source code of the Java / Jakarta Persistence API (JPA).
• JavaDoc of the Java / Jakarta Persistence API (JPA).
• The complete ObjectDB Manual in PDF format.