Thanks a lot for the references. Will check them out first before asking the next question.
On Sat, Dec 25, 2010 at 6:46 PM, Nate McCall <n...@riptano.com> wrote: > See the following PDF for some additional detail on hector: > http://www.riptano.com/sites/default/files/hector-v2-client-doc.pdf > > There is a also a project with some basic stand-alone examples that > may be helpful: > https://github.com/zznate/hector-examples > > And Riptano maintains a Java port of a Twitter example using Hector: > https://github.com/riptano/twissjava > > On Sat, Dec 25, 2010 at 12:22 AM, <roshandawr...@gmail.com> wrote: > > Can you please point me an example of that or some Hector API > documentation? > > > > I am currently using IndexedSliceRangeQuery to filter on a 2ndary index > and fetching all columns of the matching rows - using range start/end = > null. Can the option you suggest be used with the 2ndry index filtering? I > would appreciate very much seeing an example. > > > > Does it make any performance difference whether that conversion is done > by Hector/Cass or by the app? > > > > Thanks. > > Roshan > > --------------------------------------------------- > > Sent from BlackBerry > > > > -----Original Message----- > > From: Jonathan Ellis <jbel...@gmail.com> > > Date: Sat, 25 Dec 2010 00:05:44 > > To: user<user@cassandra.apache.org> > > Reply-To: user@cassandra.apache.org > > Subject: Re: Newbie question - fetching multiple columns of different > > datatypes and conversion from byte[] > > > > Or you can specify the types with the column name instead of doing a > slice. > > > > On Fri, Dec 24, 2010 at 11:23 PM, Nate McCall <n...@riptano.com> wrote: > >> In the case where you have different value types within the same > >> slice, yes, you must handle the conversion yourself and > >> ByteBufferSerializer is the easiest way to do that. > >> > >> On Fri, Dec 24, 2010 at 10:44 PM, Roshan Dawrani > >> <roshandawr...@gmail.com> wrote: > >>> Hi, > >>> > >>> I am new to Cassandra and Hector and have a basic question on fetching > >>> multiple columns of a row that have mixed data types. > >>> > >>> So, I am basically doing equivalent of "Select dateCol1, dateCol2, > >>> stringCol1, intCol1 from a_table where key in (?, ?, ?...)" > >>> > >>> My question is do I need to do the conversion of columns from byte[] to > >>> Date/String/Int myself after taking out data from the ColumnSlice? > >>> > >>> For saving the same data, while adding the columns, I was able to tell > which > >>> serializer to use, but slice queries seem to take only one > ValueSerializer > >>> for all columns being retrieved. So, if I have got it correctly, I can > only > >>> use ByteBufferSerializer in the Hector API slice query call and then do > >>> further data-type specific conversion myself at the app level? > >>> > >>> -- > >>> Roshan > >>> Blog: http://roshandawrani.wordpress.com/ > >>> Twitter: @roshandawrani > >>> Skype: roshandawrani > >>> > >> > > > > > > > > -- > > Jonathan Ellis > > Project Chair, Apache Cassandra > > co-founder of Riptano, the source for professional Cassandra support > > http://riptano.com > > > -- Roshan Blog: http://roshandawrani.wordpress.com/ Twitter: @roshandawrani <http://twitter.com/roshandawrani> Skype: roshandawrani
