Fast Object Database for Java - with JPA/JDO support

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9

JPA Exceptions

, an attempt to update the database with no active transaction is represented by: Database update
9

Obtaining a JPA Database Connection

, update, and delete should only be performed within an active transaction. Given an EntityManager, em ... that modify the database content, such as persist and remove. Database updates are collected and managed
9

Chapter 1 - Quick Tour

ObjectDB databases and perform basic CRUD operations (Create/Store, Retrieve, Update and Delete ... , retrieving, updating and deleting Point objects. To run the sample program of this chapter in
9

Database Schema Evolution

object is only updated to the new schema when that entity object is stored to the database ... explicitly in the configuration to avoid data loss. The Schema Update section in chapter 6 explains how to specify such changes in the configuration file.
9

ObjectDB License

£400 and includes all version 2.x updates. A server license covers one installation of ObjectDB ... License ObjectDB 2.x Site License costs £2,000 and includes all version 2.x updates. A site license
9

[ODB1] Chapter 2 - A Quick Tour

automatically. To enable updating the content of the database, a transaction is begun (line 14 ... (...) to release resources. Lines 46-47 Updates are physically applied to the database when the transaction
6

ObjectDB 1.0 Manual

and transactions in JDO. Chapter 6 - Persistent Objects Shows how to store, retrieve, update
6

ObjectDB 2.8 Developer's Guide

, retrieve, update and delete database objects. Explains how to use the JPA Query Language (JPQL). Presents
6

JPA Lifecycle Events

- when an entity is identified as modified by the EntityManager. @PostUpdate - after updating an entity in
6

FROM clause (JPQL / Criteria API)

, SUBSTRING, SUM, THEN,TRAILING, TRIM, TRUE, TYPE, UNKNOWN, UPDATE, UPPER, VALUE, WHEN, WHERE. JPQL

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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