Building a WML Application with Enhydra

To Conclude

Let's review quickly what we've covered:

Ø       Basic Enhydra structure and layout

Ø       XMLC usage, and some useful flags

Ø       Markup language independent business object creation, including multi-device output.

There are some pieces of Enhydra that we didn't cover - I mention them here only for completeness. Check out the Enhydra web site for more information:

Ø       Data Object Design Studio (DODS): This is the object-to-relational mapping tool that Enhydra uses to make developing applications easier. It supports most major databases, and automatically handles connection pooling and some data caching.

Ø       Multiserver Admin: A GUI application that controls applications within Enhydra. You can use it to control multiple Enhydra applications on one machine, step through requests for debugging, and start and stop Enhydra applications. It's really useful for large-scale deployment of Enhydra applications.

Ø       Enhydra Working Groups: The working groups are project teams comprised of Enhydra developers that build specific areas of functionality into Enhydra. This includes projects to integrate Enhydra into IDEs, internationalization efforts, Enterprise JavaBeans, and various other enterprise-level efforts.

In conclusion, Enhydra conforms to standards and promotes good programming practices that help you to develop and publish your site to a variety of platforms with very little trouble. It is open source, and builds upon other open source projects such as Xerces, Castor, JTidy, and Tomcat, and focuses on doing what it takes to develop a solid, enterprise-level application for the Internet world of today. The most important considerations for this are:

Ø       Scalability: performance and ability to handle greater load without reconfiguring the application, just by adding the appropriate hardware when needed.

Ø       Stability (robustness): making sure that the application is stable and (relatively) bug free in the first place.

Ø       Usability: the application needs to cater for as many different device configurations as possible, taking into account all of the difference in set-up you can get, what with all the different platforms and devices available.