Add "count" and "del" commands to CLI
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Key: CASSANDRA-594
URL: https://issues.apache.org/jira/browse/CASSANDRA-594
Project: Cassandra
Issue Type: Improvement
Components: Tools
Affects Versions: 0.5
Environment: all
Reporter: gabriele renzi
Fix For: 0.5
currently cassandra-cli does not
* allow removal of columns
* allow visualization of column count for a row (useful for large sets)
The attached patch fixes this issue by adding three more commands, del <key>,
del <key><col>, count <key>.
No new tests were addded as I could not find any for the CLI, if I have time
I'll maybe add some but this is not likely to happen soon.
As an aside, IMVHO the cassandra cli would be better as a small lib loaded
within jirb/jython, parsing would come for free, flexibility would be much
larger and it could be autogenerated from the thrift api.
{{{
Connected to localhost/9160
cassandra> get Influences.Influencer['k']
(column=kewl2, value=10; timestamp=1259756945822)
(column=kewl, value=10; timestamp=1259753635959)
Returned 2 rows.
cassandra> del Influences.Influencer['k']
done removal
cassandra> get Influences.Influencer['k']
Returned 0 rows.
cassandra> set Influences.Influencer['k']['kewl2'] = '10'
Value inserted.
cassandra> count Influences.Influencer['k']
1 columns
cassandra> del Influences.Influencer['k']['kewl2']
done removal
cassandra> count Influences.Influencer['k']
1 columns
cassandra> get Influences.Influencer['k']
Returned 0 rows.
cassandra> count Influences.Influencer['k']
1 columns
cassandra> del Influences.Influencer['k']
done removal
cassandra> count Influences.Influencer['k']
0 columns
cassandra> get Influences.Influencer['k']
Returned 0 rows.
}}}
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