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127

Version 2.5.6 enhancement problem solved by updating to version 2.5.7_03

and enhanced again if the classes were enhanced with an earlier version. But maybe build 2.5.7_03
95

Access entity version before commit transaction

Hi, I have a usecase where I need to write the updated entity version to the database before ... containing the new version of the entity So I need to access the version of an updated entity inside ... of the entity ObjectDB seems to update the version field automatically. But if I just set a String
95

Optimistic locking: prevent version increment on entity collection attribute

relationship) with an optimistic locking strategy supported by a version field. Is it possible to prevent the increment of the version of entity E when entities are added to or removed from the collection ... the version. Otherwise the version will be updated, and currently you cannot disable this update
26

JPA Entity Fields

(Mapped By) fields Primary key (ID) fields Version field The first three groups (transient, persistent ... two groups (primary key and version fields) can only be used in entity classes. Primary key fields ... and the inverse query is executed eagerly when the entity object is first accessed. Version Field ObjectDB
25

version 2.4.5+ with GlassFish 3.1.2, errors when runs application. Version 2.4.4 worked but not 2.4.5 or later

All latest versions later 2.4.5+ even 2.4.5_05 doesn't work, it deployed but errors when running. But 2.4.4 worked javax.ejb.EJBException at com.sun.ejb.containers.BaseContainer.processSystemException(BaseContainer.java:5215) at com.sun.ejb.containers.BaseContainer.completeNewTx(BaseContainer
5

Step 1: Create a Maven Web Project

. Guestbook), Artifact Id (e.g. Guestbook), Version (e.g. 1.0) and Package (guest), and click Finish ... </artifactId> <packaging>war</packaging> <version>1.0</version> <name>Guestbook</name> <url>http://maven ... > <version>2.8.1</version> </dependency> <dependency> <groupId>org.eclipse.persistence</groupId
5

Step 1: Create a Maven Web Project

). Enter Maven Version (e.g. 1.0) and Package (guest). Click the Finish button to create the project ... </artifactId> <packaging>war</packaging> <version>1.0</version> <name>Guestbook</name> <url>http ... >    <version>2.8.1</version>   </dependency>   <dependency>   <groupId>org.eclipse.persistence
5

Constants.NONCONFIGURABLE_PROPERTY_VERSION_NUMBER

Static Field javax.jdo.Constants String NONCONFIGURABLE_PROPERTY_VERSION_NUMBER Nonconfigurable property constanct "VersionNumber" Since: JDO 2.1 See Also: PersistenceManagerFactory.getProperties()
5

VersionStrategy.VERSION_NUMBER

Enum Constant javax.jdo.annotations.VersionStrategy VERSION_NUMBER Since: JDO 2.1
5

Version.extensions

Annotation Element javax.jdo.annotations.Version Extension[] extensions Vendor extensions. Returns: the vendor extensions Default value: {} Since: JDO 2.1

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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