ObjectDB ObjectDB

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2

Detached Entity Objects

). Retrieval by navigation from detached objects is not supported, so only persistent fields
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JPA Metamodel API

the FROM clause: See the JPA Metamodel API page (in the ObjectDB manual) for more details and examples.
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JPA Exceptions

to retrieve entity objects from the database. For example, when a required entity object is not found: or
2

ObjectDB Overview

. Suitable for database files ranging from kilobytes to terabytes. Supports both Client-Server mode
2

Posting Sample Code

();         Query query = em.createQuery("SELECT e FROM MyEntity e");         List resultList = query
2

Database Doctor

from the command line: > java -cp objectdb.jar com.objectdb.Doctor my.odb If objectdb.jar
0

Step 1: Create a Java Project

] window and select Add Jar/Folder... Select the objectdb.jar file from the bin subdirectory
0

Java EE JPA Tutorial - Maven Project

is installed - extract the zip and run the application from the command line: > mvn package
0

Step 1: Create a Java EE Web Project

] window and select Add Jar/Folder... Select the objectdb.jar file from the bin subdirectory
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Step 5: Add a JSP Page

the guestbook, followed by a list of all the guests that have already signed (which are retrieved from

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.

Need Help?

  1. Search ObjectDB website
  2. Read the FAQ
  3. Follow the Tutorials
  4. View or post in the forum
  5. Search or file an issue
  6. Contact support