If you’re like me, you spend a lot of time dealing with legacy code that, for whatever reason, does not take advantage of modern methodologies and libraries. I’ve taken over Java projects that contain hundreds of thousands of lines of code and not a single third-party jar other than a JDBC driver! One of the most common examples of this is the implementation of the data access layer. These days, the de facto methodology involves Hibernate and DAOs, usually managed by Spring.
This article will detail the steps I recently took to covert a large application from custom-written data access to Hibernate and Spring using the refactoring facilities in Eclipse. The key with this refactorization is to get the existing business logic code (Struts Actions, JSPs, Delegate classes, Business Service classes, etc. ) to access the datastore using Hibernate, managed by Spring, without manually changing any of that code directly. Part 1 will include creating the Hibernate data object classes, DAOs, and refactoring the existing code to work with these newly created types. Part 2 will conclude the project with integration of the Hibernate DAOs and wiring everything up with Spring.
It’s been three years of colorful journey with the Apple iPhone, the most scintillating communication gadget of all time. Full credit goes to Apple for creating such an awe-inspiring device and for pouring ‘life’ to it. It’s a device for the ones who have a liking for the best and speedy things in life. Never shying on features even an inch, the Apple iPhone has proved once again why its maker, Apple has always been the most sought-after name in software and gadgetry world. Equipped with a plethora of entertainment, communication, utility and connectivity functions, the Apple iPhone are now available in two versions of 3G and non-3G. Both the versions support third party software installation in a breeze. It just takes a few minutes fir you to download different types of iPhone apps from the web and then download to the device.