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Retrieving JPA Entity Objects

the example above, the Employee entity class contains an address field that references an instance

JPA Queries

query string (i.e. to a String instance containing JPQL). An essential interface for using

JPA / JDO Class Enhancer

Line Enhancement ObjectDB Enhancer is a Java console application. It is contained in the objectdb.jar

JPA Named Queries

="SELECT c FROM Country c") The @NamedQuery annotation contains four elements

What are the main benefits of using ObjectDB?

fields can be stored by ObjectDB simply as part of the containing object. Relational databases lack

Where can I learn how to use ObjectDB?

The best source for learning ObjectDB is the ObjectDB Manual, which contains all the necessary information for using ObjectDB. The only required background is a good understanding of the Java language. Reading the manual and getting started with ObjectDB could be easier for developers with prior

JPA Annotations for Java EE

The following JPA annotations are in use to integrate JPA into a Java EE application and are managed by the Java EE container:

Java EE Web Tutorial

. If you need a web application that can run on a simple servlet container (such as Tomcat or Jetty

Step 3: Define a Spring DAO Component

the application to the Spring Framework. For instance, in this example the Spring container: Manages

Step 5: Add a JSP Page

output, which contains a simple form for signing the guestbook, followed by a list of all the guests

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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