I had the same question you did, I think. Below is as far as I got with Hector…
I have a column family of super-columns with long names. The columns in each
super-column also have long names. I'm using Hector, and what I want to do is
get the last column in each super-column, for a range of super-columns. I was
able to get the last column in a column family like this…
Cluster cluster = HFactory.getOrCreateCluster("Cortex", config);
Keyspace keyspace = HFactory.createKeyspace("Products", cluster);
RangeSlicesQuery<String, String, String> rangeSlicesQuery =
HFactory.createRangeSlicesQuery(keyspace, StringSerializer.get(),
StringSerializer.get(), StringSerializer.get());
rangeSlicesQuery.setColumnFamily("Attributes");
rangeSlicesQuery.setKeys("id0", "id0");
rangeSlicesQuery.setRange("", "", true, 1);
QueryResult<OrderedRows<String, String, String>> rsult =
rangeSlicesQuery.execute();
…but no luck with the additional dimension.
Caleb Rackliffe | Software Developer
M 949.981.0159 | ca...@steelhouse.com
From: Guy Incognito <dnd1...@gmail.com<mailto:dnd1...@gmail.com>>
Reply-To: "user@cassandra.apache.org<mailto:user@cassandra.apache.org>"
<user@cassandra.apache.org<mailto:user@cassandra.apache.org>>
Date: Thu, 27 Oct 2011 06:34:08 -0400
To: "user@cassandra.apache.org<mailto:user@cassandra.apache.org>"
<user@cassandra.apache.org<mailto:user@cassandra.apache.org>>
Subject: super sub slice query?
is there such a thing? a query that runs against a SC family and returns a
subset of subcolumns from a set of super-columns?
is there a way to have eg a slice query (or super slice query) only return the
column names, rather than the value as well?
