bodom_lx at task3 dot cc

While searching for solutions on adopting Django for the server side of our Dynamic Car Pooling system, I found two very interesting projects:

• WAPI – a framework which abstracts the details involved in publishing an API and translates class methods to API methods, serializing the objects returned when possible. WAPI handles authentication, too, and other advanced functions. It’s an amazing, fully Django compatible system that currently works over ReST (JSON, XML, YAML) but not with XML-RPC. Therefore, I contacted the author to have some information about the status of the project. It would be very interesting in our system, to provide API and XML-RPC services just by using his layer
• RPC4Django – provides XML-RPC and JSON-RPC support to an existing Django project. It promises a XML-RPC interface by just adding the decorator @rpcmethod to an existing python function. It also fully integrates with Django authentication framework

I’m going to experiment with these two tools. Obviously the first one is the most interesting because of its ability to “export” services in more formats. But the most important protocol for us is missing. Let’s hope it will be added soon!

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My third meeting at FBK is about to end. Today we discussed about some use-case, sequence and class diagrams I wrote during the week. Obviously there were lots of changes after the discussion and I will post them as soon as I’ve updated them. For the next time I will take a look at some implementation issues. The client side could be written using Android while for the server side we are seriously looking at Python and Django. It would be very interesting! For the communication, we are reasoning about XML-RPC, SOAP or a personalized Restful API. OpenTrip protocol might not be included in our implementation, as we don’t have the time to parse non-standard XML and adapt the system to use it. But this is not a final decision.
I will also write some simple mockups to test all the possible combinations.

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BD-review is a dynamic website to allow people to review releases (albums, demos, EPs, singles) of (young, unsigned) music bands. The project is the outcome of the Internet Technologies course at the Faculty of Computer Science of the Free University of Bolzano. The requirements of the project were to build a website using a small subset of JavaEE technologies, without the use of web-frameworks.

A screenshot of a Review

The project is not really meant for production use. It was made as a strong, working and correct base for studying JavaEE academically. It should be useful for every student (also non-student) willing to have an overview on JSP and study it. The code is well-written, uses MVC, and the whole project is documented in detail in a 20+ pages report.

Read more on the project page, download the sources and play with it! Please let me know about your experience with BD-review code.

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As I promised about 4 hours ago, here is my introduction to Hyper Text Transfer Protocol in form of a mind map.
It is to be intended as a really short introduction to this protocol. Like the previous one about computer networks, the mindmap summarizes materials copyrighted by Tanenbaum and also material taken from Wikipedia.

The topics covered are:

• Scope of the protocol
• HTTP connection
  • HTTP/1.0
  • HTTP/1.1
• HTTP request methods:
  • GET
  • HEAD
  • PUT
  • POST
  • DELETE
  • TRACE
  • CONNECT
  • OPTIONS
• Message Headers
  • Request Headers – all
  • Response Headers – all
• Status Codes:
  • 1xx Information
  • 2xx Success
  • 3xx Redirection
  • 4xx Client error
  • 5xx Server Error
• Sessions:
  • Cookies
  • Server-Side sessions
• Secure HTTP – HTTPS:
  • By URI scheme
  • HTTP Upgrade Header
  • SSL/TLS

You can browse an HTML version online.

You can download:

• Mindmap source file (Freemind)
• An export in PDF format
• An export in PNG format

As always, you are free and encouraged to contact me in case of errors or anything else.
Hope you like it!

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