No. CompareWith is for columns. On Fri, Feb 18, 2011 at 3:16 PM, cbert...@libero.it <cbert...@libero.it> wrote: > Hi all, > I created a CF in which i need to get, sorted by time, the Rows inside. Each > Row represents a comment. > > <ColumnFamily name="Comments" compareWith="TimeUUIDType" / > > > I've created a few rows using as Row Key a generated TimeUUID but when I call > the Pelops method "GetColumnsFromRows" I don't get the data back as I expect: > rows are not sorted by TimeUUID. > I though it was probably cause of the random-part of the TimeUUID so I create > a new CF ... > > <ColumnFamily name="Comments2" compareWith="LongType" / > > > This time I created a few rows using the java System.CurrentTimeMillis() that > retrieve a long. I call again the "GetColumnsFromRows" and again the same > results: data are not sorted! > I've read many times that Rows are sorted as specified in the compareWith but > I can't see it. > To solve this problem for the moment I've used a SuperColumnFamily with an > UNIQUE ROW ... but I think this is just a workaround and not the solution. > > <ColumnFamily name="Comments" type="Super" compareWith="TimeUUIDType" > CompareSubcolumnsWith="BytesType"/ > > > Now when I call the "GetSuperColumnsFromRow" I get all the SuperColumns as I > expected: sorted by TimeUUID. Why it does not happen the same with the Rows? > I'm confused. > > TIA for any help. > > Best Regards > > Carlo >
-- Jonathan Ellis Project Chair, Apache Cassandra co-founder of DataStax, the source for professional Cassandra support http://www.datastax.com
