mohankreddy / jtwissandra Goto Github PK

=============== BRIEFING ===============

This is a simple example by using common Hactor APIs to build a twitter-like data modeling.



=============== TESTED ===============
1) Apache Cassandra 1.0.7 + hector-core 1.0-2
1) Apache Cassandra 1.0.8 + hector-core 1.0-2



=============== FAQ ===============

1. What are the main concepts in this example:

a. USER: 
Each user has user_name, user_password and create_timestamp columns.

b. FRIEND: 
Friend is the User you're following

c. FOLLOWER: 
Once you followed a Friend, you will be the Friend's Follower as well.
So Friend and Follower will be created at the same time.

d. TWEET: 
Tweet is the content of twitter. 
It has fixed columns of user_uuid and tweet_content.

e. TIMELINE: 
Timeline is the "line" of Tweets in time order.
Each User has one Timeline and if someone creates a tweet, the tweet will be added in his and all his Followers' Timeline.

For more detail schema, please refer to file of schema/schema.txt.


2. How to test?
Currently the example provides a simple JUnit test case named ServiceTest by which you can go through all JTwissandra ideas like:
 - addUser
 - followFriend
 - followedByFollower
 - addTweetByMe
 - addTweetByFriend
 - getTweetsByMe
 - getTweetsByMeForNextTimeline
 - getTweetsByMyFriend
 - getTweetsByMyFriendForNextTimeline
 
Before running this JUnit test, please start you Apache Cassandra server and create the schema first under CLI.
  C:\>cd /d C:\java\apache-cassandra-1.0.8\bin
  C:\java\apache-cassandra-1.0.8\bin>cassandra-cli
  [default@unknown] connect localhost/9160;
  [default@unknown] PASTE HERE ALL SCRIPTS FROM schema/schema.txt