1. Peer-to-Peer Information Systems Week 6: Assignment #3
Old Dominion University
Department of Computer Science
CS 495/595 Fall 2003
Michael L. Nelson
10/02/03

2. Assignment #3
Upon startup, clients still send a “submit” verb to the server
However, the server no longer broadcasts a submit back to all the clients
The clients must allow a user to generate keyword searches
client sends “query” verb to the server
server sends “queryResult” verb to the client

3. Server Details Server performs a search over all the DC metadata
no fielded searching
server can quietly drop malformed queries
server must support booleans:
+word = AND
word = OR
-word = NOT
use any system to implement the boolean searching
this is doable using just “grep”
return <queryResults id=…></queryResults> for a query with no hits

4. Client Details Client must allow for users to specify the query
Client must show the query results separate from the locally held files
Client must cache query results
make them browsable so queries don’t have to be repeated

5. Demo The server group will go first Client groups will go next
give a brief walk through / discussion of their implementation
start their server (from a null state)
Client groups will go next
register to the server
submit mp3s
do 2-3 queries & show results
also show cached results from queries
request mp3s from each client

6. Grading 1/6 of your total project grade You will be graded on:
10 % of your course grade
You will be graded on:
in class presentation
appearance of the interface
nice & creative display of the metadata is encouraged!!!
whether or not it works
practice before you show up for class!
robustness of handling exceptional conditions
these are end-user applications… they should behave like them