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Can I use ObjectDB to access a relational database?

To access relational databases using the Java Persistence API (JPA) you will need an Object ... . The DataNucleus ORM implementation supports also the Java Data Objects (JDO) API. ObjectDB is a full featured standalone Object Database Management System (ODBMS) and not an ORM tool, so it is not intended and cannot be used to access other database management systems.

Eclipse Public License - v 1.0

, if any, and such derivative works, in source code and object code form. b) Subject to the terms ... the Contribution of such Contributor, if any, in source code and object code form. This patent ... to distribute the Program in object code form under its own license agreement, provided that: a) it complies

Chapter 1 - Quick Tour

that contains points in the plane. Each point is represented by an object with two int fields, x and y ... , retrieving, updating and deleting Point objects. To run the sample program of this chapter in ... on how to start using JPA in your IDE with the ObjectDB object database. Given the simplicity of ObjectDB, that should be quick and easy even for a novice.


ObjectDB Software develops, markets and supports the ObjectDB Object-Oriented Database Management ... persistence solution for Java, based on the Java Persistence API (JPA) and the Java Data Objects (JDO) standards, since ObjectDB is the first object oriented database with built in support of JPA and JDO

Step 2: Entity Class and Persistence Unit

To store objects in an ObjectDB database using JPA we need to define an entity class: Open the [New ... fill the fields with arbitrary values to enable it. A new entity class that should represent Guest objects in ... is adding a Spring DAO Component class that will manage Guest entity objects.

Step 2: Define a JPA Entity Class

To store objects in an ObjectDB database using JPA we need to define an entity class: Open the [New ... to create the new class. The new class should represent Guest objects in the database. Use copy ... + ")"; } }  The new class should represent Guest objects in the database. Besides the @Entity

Step 3: Define a Spring DAO Component

Operations on the database will be performed by an instance of a Data Access Object (DAO) that we will define in this step as a Spring MVC component: Open the [New Java Class] dialog box by right ... Guest entity object in the database. getAllGuests - for retrieving all the existing Guest objects


for the field Since: JDO 1.0 Object getObjectField( PersistenceCapable pc, int field, Object currentValue ... : the new value for the field Since: JDO 1.0 Object getObjectId( PersistenceCapable pc) Return the object representing the JDO identity of the calling instance. Return the object representing the JDO


javax.jdo.identity Class ObjectIdentity java.lang.Object javax.jdo.identity.SingleFieldIdentity ... , Comparable This class is for identity with a single Object type field. Since: JDO 1.0 ObjectIdentity ... ObjectIdentity(Class pcClass, Object param) Constructor with class and key. Constructor with class and key


javax.jdo.spi Class JDOImplHelper java.lang.Object javax.jdo.spi.JDOImplHelper This class ... - a Class to be checked for JDOPermission("setStateManager") Since: JDO 1.0.1 Object construct(String ... 1.0 void copyKeyFieldsFromObjectId(Class pcClass, ObjectIdFieldConsumer fm, Object oid) Copy fields

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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