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ObjectDB Overview

Features 100% pure Java Object-Oriented Database Management System (ODBMS). No proprietary API - managed only by standard Java APIs (JPA 2 / JDO 2). Extremely fast - faster than any other JPA / JDO product

JPA / JDO Class Enhancer

\*"/> </java> Enhancement API The ObjectDB Enhancer can also be invoked from Java code: com.objectdb ... API and invocation of the Enhancer from Java code is useful, for instance, in implementing custom

Can I use ObjectDB to access a relational database?

To access relational databases using the Java Persistence API (JPA) you will need an Object Relational Mapping (ORM) tool, such as Hibernate, TopLink, EclipseLink, Open JPA or DataNucleus. The DataNucleus ORM implementation supports also the Java Data Objects (JDO) API. ObjectDB is a full featured

JPA Reference (JavaDoc)

This reference contains the API documentation (similar to JavaDoc) of the Java Persistence API (JPA) 2.0. The content is derived from the original JPA documentation (in the EclipseLink JPA 2 RI) with some additions and notes. The four most basic JPA types are: All the other JPA types are organized

Where can I learn how to use ObjectDB?

All about Where can I learn how to use ObjectDB? in Java/JPA database - explanations, examples, references, links and related information.


Method javax.persistence.Query Query setLockMode( LockModeType lockMode ) Set the lock mode type to be used for the query execution. Parameters: lockMode - lock mode Returns: the same query instance Throws: IllegalStateException - if the query is found not to be a Java Persistence query language SELECT query or a Criteria API query Since: JPA 2.0

Step 1: Create a Maven Web Project

>servlet-api</artifactId>    <version>2.5</version>    <scope>provided</scope>   </dependency>   <dependency>    <groupId>javax.servlet.jsp</groupId>    <artifactId>jsp-api</artifactId

Step 1: Create a Maven Web Project

>    <artifactId>servlet-api</artifactId>    <version>2.5</version>    <scope>provided</scope>   </dependency>   <dependency>    <groupId>javax.servlet.jsp</groupId>    <artifactId>jsp-api</artifactId

What is the Java Data Objects (JDO)?

The Java Data Objects (JDO) is another standard for accessing persistent data in databases, using plain old Java objects (POJO) to represent the object model. Unlike Java Persistence API (JPA ... , and it is probably the most popular Java API for object databases today.

[ODB1] Chapter 1 - About ObjectDB

API is available today for most relational database systems (RDBMS), e.g. Oracle, IBM DB2 ... to the other can be done simply by changing a single string (the connection URL), because the JDO API

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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