howworks

How It Works?

Last Updated: 26 April 2005

BEFORE YOU READ...
The following info, given below, are bit technical and the good thing is that you do not have to understand all these in order to enjoy the music. ;-)

However those who understand them and would like to do more, please join the Project Music Vault Yahoo! group for further details.

ARCHITECTURE

1. Static Webpages & Links to HOME computer
Runs always @ SPRYNET (ISP);

The following links connect to HOME computer:

Music Categories link on the left side menu.
Project Music Vault link on the left side menu.
Search button on the top-right corner
Music files on the Dikshitar Kritis webpage.

2. Music Files Library, stored in the Filesystem
Available mostly @ HOME;

About 2000 tracks; 15 GB hard disk space
Mostly in Real Media format, Digitized at 32KBPS bit rate sound quality
Occupies about ~1 MB space per minute of the song
Converted from audio cassettes, mainly, using Real Producer software via Sound Blaster 16-bit card

3. Search, Navigate, Select, Invoke Play, etc. Application
Available mostly @ HOME;

NA's original, Music Categories, was developed using Java Servlets.
Project Music Vault, adopted from an Open Source initiative, called Netjuke. It was written in PHP.
Audio files are protected, by a homegrown Streaming Program, to stream only to the Real Player

4. Database of Music metadata, such as Track Title, Raga, Composer, etc.
Available mostly @ HOME;

NA's original is in Oracle
Music data was entered manually, using an MS Access Application
Data contains 1989 Tracks; 272 Albums; 302 Ragas; 139 Composers; 88 Artists
PMV Netjuke is in MySQL
The data from Oracle got ported without any manual re-entry (thankfully!), by creating CSV text from Oracle and using Import utility that comes with Netjuke

5. Java Servlet/JSP engine
Available mostly @ HOME;

Uses Jakarta-Tomcat engine
Application has about 15 Java programs, mainly Servlets

6. WebServer with plugins for Jakarta & PHP
Available mostly @ HOME;

Both NA's original & PMV uses Apache
Listens in two different ports

7. Change IP Program
Run as needed @ HOME;

Java application, invoked from command line, using Java FTP API
Detects the change in IP address at HOME
Updates the IP address at SPRYNET links with the newly detected IP

8. Start & Stop Services
Run as needed @ HOME;

Java application, invoked from command line, using Java FTP API
Starts & Stops the Services (mentioned in #3 - #6)
Updates the Speaker image at SPRYNET NA homepage appropriately to the Service status

9. Development & Data-entry Tools
Used as needed @ HOME;

MS Access application to enter Music metadata information to Oracle tables
jEdit, a Java Editor, for Java development for NA Original environment
PHPEdit, a PHP Editor, for PHP development for Netjuke modifications
Tortoise CVS, a Source Control software, to maintain software versions
FTP32, a GUI FTP Program, to transfer files between HOME & ISP
MySQL CC, a GUI Control Center for MySQL database, to administer MYSQL database
TextPad, a Text Editor, for editing text, simple HTML pages