Iteration 1 : The Code

The Code Viewer

My journey into Object Oriented Programming (OOP) and ColdFusion is a programmatic adventure. That means the fun is in the meat of it, not just the start and the end. Come along with me people. You can't just sit there and wait for iteration after iteration to be finished. You have to be in the trenches, learning with me. This code viewer allows you to look at my progress on this project on a day-by-day basis. See how I am updating individual files. See where new methodologies are getting applied. See how OOP can help you.

Note: The code viewer works better in FireFox (big suprise), but is functional in both FireFox and IE.

The Application

For every code update, I will update the live application. The live application will always have the most recently updated code. Click here to launch the latest version of the application.

Iteration 1 : Code Updates

View the updated code

Download the updated code (ZIP file)

As I have been working on this application and testing and letting it run in the background, I am quickly becoming aware that one mega byte files add up very quickly. On my local server, after letting the spider run for about 20 or 30 minutes, I had almost one GIG or videos stored. Granted, this was a large number of videos, but it made me realize that something had to be done; the spider could not be allowed to run unconditionally.

To remedy this, I have updated the application initialization process in the ColdFusion Application.cfm file to set a value for max storage size (APPLICATION.MaxStorageSize). This is the number of bytes that the application is allowed to store before spidering of new content is shut down. I have defined the size interms of math so that it can be easily manipulated:

<cfset APPLICATION.MaxStorageSize = (1024 * 1024 * 800) />

This will make editing the max file size easy for anyone who does not know byte sizes.

Then, if you look on the spider.cfm, spider_gallery_links.cfm, spider_gallery.cfm, and spider_video.cfm pages, I am putting in a CFDirectory tag and an ArraySum() size check on the video storage directory. If the current size of the directory is greater than or equal to the max size allowed by the application, spidering is prevented. Additionally, I have put a special note on the home page, home.cfm, but there is nothing to "shut down" there.

I am not checking the size of the XML documents or the thumbnails. I figure these are such an insignificant means of hard drive space usage when compared to the videos themselves. If there is any concern, the max size of the application can always be lowered to accommodate thinking about all resources.

You will also notice that on the spider.cfm page, I am dealing with the max file size inline. Meaning, if the user has exceeded the file size usage, I tell them directly on that page, inline to the existing content. On other pages, however, such as the spider_gallery_links.cfm, spider_gallery.cfm, and spider_video.cfm, you will see that I am just performing a check and potentially forwarding the user onto another page. I just don't want those pages to get any more complicated then they have to. To keep all that checking inline on those pages would require the use of more IF statements and would make the page unnecessarily long.

As far as the pop-up spidering pages go (those mentioned above), they just forward onto a new page, spider_size_warning.cfm, whose only job is to display the size warning message. This makes everything easy and keeps the page logic as small as possible.

Now, we are, of course, violating the DRY principle. DRY stands for Do not Repeat Yourself. In this case, we are repeating ourselves on several page. This is something that will mostly likely be addressed in Phase II when we do general refactoring of the application.

I have also made some minor CSS modifications for display on the search page. Nothing big.

Iteration One Updates

Oct 12, 06 Code Update
Oct 10, 06 Code Update
Oct 7, 06 Code Update
Oct 4, 06 Code Update
Oct 3, 06 Code Update
Oct 1, 06 Code Update
Sep 29, 06 Code Update
Sep 27, 06 Code Update
Sep 24, 06 Code Update