ObjectDB 2.8.0

Released on 2019-05-08 (see other available releases).

A newer version is available.

Use of ObjectDB is subject to the ObjectDB Licence. 

Changes in ObjectDB 2.8.0

• Improved query plan evaluation and selection (issue #2379, issue #2417).
• Increased the number of combinations examined by the query planner (issue #2379).
• Excludes old unused classes in the database from licence limits (issue #2412).
• Added an option to select a query plan using a query hint (see issue #2379).
• Added logging when the number of allowed entity classes is exceeded (feature request #2412).
• Added logging to diagnose unexpected duplicate index entry (issue #2403).
• Fixed a bad optimisation in query execution (issue #2432).
• Fixed an activation issue with some Java versions.
• Fixed an InternalException (issue #2153, see also issue #2027).
• Fixed long compilation time of queries with many (>10) JOINs (issue #2423)
• Fixed the new option in 2.7.6_01 to select a query plan using a query hint (see issue #2379).
• Fixed a critical bug in index based query execution (issue #2414).
• Fixed a bug in loading a TreeSet lazily (issue #2407).
• Fixed an unexpected internal exception in query result cache (issue #2406).

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.

<repositories>
			...
	<repository>
		<id>objectdb</id>
		<name>ObjectDB Repository</name>
		<url>https://m2.objectdb.com</url>
	</repository>
			...
</repositories>
			...
<dependencies>
			...
	<dependency>
		<groupId><b>com.objectdb</b></groupId>
		<artifactId><b>objectdb</b></artifactId>
		<version><b>2.8.0</b></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.
• Tutorial projects in Maven format for opening and running in your favourite IDE.
• 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.