ObjectDB 2.7.6

Released on 2018-09-17 (see other available releases).

A newer version is available.

Use of ObjectDB is subject to the ObjectDB Licence. 

Changes in ObjectDB 2.7.6

• Added support of an option to disable broken reference cleaning in the Doctor (feature request #2341).
• Added support of cascading delete using JDO (feature request #2329).
• Added logging for "Failed to read from file" error (issue #2322).
• Added an option for eager background purge of weak references (issue #2302).
• Added support of filtering mapped-by (inverse) relationship results using a constraint.
• Changed to-one mapped-by (inverse) relationship with multiple matching to always take the first.
• Changed query optimisation to prefer set retrieval during query execution.
• Improved eager fetch mechanism to avoid unnecessary repeated operations.
• Improved performance of reflection mode (no enhancement) by minimising  tracking backups.
• Improved concurrency by using lock free Synchronization (issue #2327).
• Fixed a regression optimistic lock exception bug (due to fix of issue #2280).
• Fixed a regression bug on remove and persist of an object in the same transaction (issue #2027).
• Fixed a bug in UPDATE queries that modify more than 10000 objects (issue #2355).
• Fixed a NullPointerException (issue #2302, post 43).

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>2.7.6</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.