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manual

JPA Entity Fields

Explains how to define and use primary keys in JPA, including composite and embedded primary keys.... in persistence and their values are never stored in the database (similar to transient fields in Java that do not participate in ... entity fields with no real content to be stored in the database. Persistent Fields Every non-static non-final entity ...

 
release

2.6.5

... Version 2.6.4 Added memory only database mode. Added an option to cascade detachment to ... . Added an option to disable reuse of database page objects . Improved release of query resources. ...

 
release

2.6.6

... Version 2.6.4 Added memory only database mode. Added an option to cascade detachment to ... . Added an option to disable reuse of database page objects . Improved release of query resources. ...

 
manual

Defining a JPA Entity Class

Shows how to define a JPA entity class in order to store objects in the database. To be able to store Point objects in the database using JPA we need to define an entity class . A JPA entity class ... as having the ability to represent objects in the database. Conceptually this is similar to serializable classes, which are ... provides the ability to store Point objects in the database and retrieve Point objects from the database: package ...

 
forum_thread

How find out ObjectDB version at runtime (in a web app)

Am getting inconsistent results with the "objectdb.temp.no-enhancement-crc-check" system property of objectdb-2.6.9_02 in a Glassfish web app. Can see correct version of objectdb-2.6.9_02 in /build/web/WEB-INF/lib. When one runs the enhancer (which I am doing post-compile, pre-deploy with an Ant script) Object clearly indicates the version. Q: How can one interrogate objectdb for the version at run-time ? ... Answered here already:  https://www.objectdb.com/database/forum/827?u#item-2 Gave ObjectDB version:(2.6.9_02). ...

 
forum_thread

How to have a distribuited GWT application with ObjectDB and Spring?

Hello to everyone! ... So GWT application of point A needs to access the remote database in hosts of point B or Point C. As database we use Objectdb because it's very simple and efficient and we use ...

 
manual

Updating JPA Entity Objects

Explains how to use JPA to delete (remove) entity objects from the database.... Modifying existing entity objects that are stored in the database is based on transparent persistence, which means that changes are ... Update Once an entity object is retrieved from the database (no matter which way) it can simply be modified in memory from inside ...

 
release

2.7.2

... in the Explorer. Fixed a bug in reusing database space after removing an index. Improved error message on ... Added an option for possibly improved concurrent database file access. Added automatic logging of query details on ...

 
manual

Online Backup

Online Backup enables backing up an ObjectDB database while it is in active use by applications. The ability to create a backup while the system is running is essential in applications and services that have to be available 24/7/365. An ObjectDB database can be backed up by simply copying or archiving the database file while the database is offline (i.e. when it is not open in an ObjectDB server and not in ...

 
manual

Server User List

Explains how to define and set users, directories and permissions in the ObjectDB fast Java database server for JPA/JDO.... the master user itself cannot be used to connect to the database. The <dir> element <dir path = "/" ... The required permissions attribute specifies which database file permissions are granted. The comma separated string value may ...