Pieter Humphrey

Java Developer Magazine on Ulitzer This tutorial provides step-by-step instructions for creating a Web application that uses the Java Persistence API (JPA) version 2.0 with Oracle WebLogic Server 11g Release 1, Spring, EclipseLink, JavaServer Faces (JSF), and Oracle Database, Express Edition. You will develop this application using Oracle Enterprise Pack for Eclipse 11g Release 1, Patchset 1 (11.1.1.3). During the process of creating this application, you'll also get a sneak peek at planned enhancements to the Eclipse Web Tools Platform. Application Description The Web application you will develop in this tutorial is designed for a company that sells a variety of products. The application will maintain a list of products for sale as well as a list of customers who placed orders. In this tutorial, you will develop modules for the Web application. The Add Customer mod... (more)

Managing Persistent Entities with the JPA Persistence Entity Editor

Oracle Enterprise Pack for Eclipse allows you to view, create, and manage JPA entity relationships. The Entity Editor provides a centralized view of all entity relationships, allows you to modify entity properties, and allows you to navigate between the object model, mapping associations, and database schema layers. The tasks you will complete in this step are: View an entity relationship diagram, using the Entity Editor View the properties of JPA persistent entities, using the Entity Editor and the JPA Details View Manage JPA entity mappings View an Entity Relationship Diagram, ... (more)

Browsing Database Artifacts Using Data Source Explorer

In Part 1 of this tutorial, I showed how to set up a web project and connect to a database. In this step, you will use the Data Source Explorer to browse database artifacts. You may need to re-open the JPA perspective. In the Data Source Explorer, expand the nodes inside the New Oracle Database Connection node. You can view the individual tables and columns. Observe that the Data Source Explorer denotes which columns have been designated as primary keys. Note that the tables shown below are stored in the JPATUTORIAL schema. While browsing database artifacts, simply expand the tr... (more)

Developing a Master-Detail View – Part 3

The JPA ORM Generation wizard allows modification of existing O/R mappings and the creation of new entity associations. The tasks you will complete in this step are: Create a new one-to-one association between CUSTOMER and CUSTOMERID Review generated classes with annotations Add annotations to an existing Java class Create a new one-to-one association between CUSTOMER and CUSTOMERID Oracle Enterprise Pack for Eclipse also supports the creation of new entity associations in case your database lacks foreign key definitions (such as for performance reasons). It can create Simple Associa... (more)

Mixing Open Source and Commercial Software - The Best of Both Worlds

Mixing Open Source and commercial software isn't a new concept. IT departments have been doing it for years, especially when building out their core server, networking, and database infrastructures. But using a novel "blended" application development strategy - one that combines Enterprise Java APIs and Open Source Java application frameworks - offers the best of both worlds. Better Java-based Enterprise Apps with Open Source and Commercial Tools Many IT organizations already depend on Open Source software for some of their application development or deployment. But pure Open Sour... (more)