new_features.txt

Following are the features which i have added with sligh modifications and additions in original code :-

1. Bash-like Aliases with full autocompletion support, custom aliases, listing aliases.

cassandra@cqlsh> show 
         ;        <enter>  ALIASES  HOST     SESSION  VERSION  
cassandra@cqlsh> show ALIASES ;
Aliases :> {'dk': 'desc keyspaces;', 'sl': 'select * from'}

now if you type dk and press <tab> it will auto complete it to "desc keyspace".

Adding alias

From shell :-

cassandra@cqlsh> alias slu=select * from login.user ;
Alias added successfully - sle:select * login.user ;
cassandra@cqlsh> show ALIASES ;
Aliases :> {'slu': 'select * from login.user ;', 'dk': 'desc keyspaces;', 'sl': 'select * from'}
cassandra@cqlsh> sle
Expanded alias to> select * from login.user ;
 username                 | blacklisted | lastlogin | password   


Directly in file :-

aliases will be kept in same cqlshrc file.
[aliases]
dk = desc keyspaces;
sl = select * from
sle = select * from login.user ;

now if you type just "sle" it will autocomplete rest of it and show next options.


2. Prompt on destructive operations. It's inspired from elasticsearch - https://github.com/elastic/elasticsearch/issues/4549 . I think we should have it in production atleast.

in cqlshrc :-

[misc]
safe_mode = true

if this mode is true, we will get prompted (y/n?) before the action is performed.
.

cassandra@cqlsh> truncate login.user ;
Are you sure you want to do this? (y/n) > n
Not performing any action.


cassandra@cqlsh> delete from login.user where username = 'v';
Are you sure you want to do this? (y/n) > n
Cancelled deletion.

cassandra@cqlsh> updatee login.user set password=null;
Are you sure you want to do this? (y/n) > n
Not performing any action.


3. Press q to exit :D