After searching for a while I found what I was looking for [1] Hope it helps to someone else (:
Renato M. [1] http://www.datastax.com/dev/blog/introduction-to-composite-columns-part-1 2013/1/16 Renato Marroquín Mogrovejo <renatoj.marroq...@gmail.com>: > What I mean is that if there is a way of doing this but using Hector: > > > --------------------------------------------------------------------------------------------------------------------- > public static void main(String[] args) throws Exception { > Connector conn = new Connector(); > Cassandra.Client client = conn.connect(); > > SlicePredicate predicate = new SlicePredicate(); > List<byte[]> colNames = new ArrayList<byte[]>(); > colNames.add("a".getBytes()); > colNames.add("b".getBytes()); > predicate.column_names = colNames; > > ColumnParent parent = new ColumnParent("Standard1"); > > byte[] key = "k1".getBytes(); > List<ColumnOrSuperColumn> results = > client.get_slice(key, parent, predicate, ConsistencyLevel.ONE); > > for (ColumnOrSuperColumn cosc : results) { > Column c = cosc.column; > System.out.println(new String(c.name, "UTF-8") + " : " > + new String(c.value, "UTF-8")); > } > > conn.close(); > > System.out.println("All done."); > } > --------------------------------------------------------------------------------------------------------------------- > > > Thanks! > > 2013/1/16 Renato Marroquín Mogrovejo <renatoj.marroq...@gmail.com>: >> Hi, >> >> I am facing some problems while retrieving a some events from a column >> family. I am using as column family name the event name plus the >> timestamp of when it occurred. >> The thing is that now I want to find out the latest event and I don't >> how to query asking for the last event without a RangeSlicesQuery, >> getting all rows, and columns, and asking one by one. >> Is there any other better way of doing this using Hector client? >> >> [default@clickstream] list click_event; >> ------------------- >> RowKey: >> 706d63666164696e3a31396132613664322d633730642d343139362d623638642d396663663638343766333563 >> => (column=start:2013-01-13 18:14:59.244, value=, timestamp=1358118943979000) >> => (column=stop:2013-01-13 18:15:56.793, >> value=323031332d30312d31332031383a31353a35382e333437, >> timestamp=1358118960946000) >> >> Thanks in advance! >> >> >> Renato M.
