On 12/01/2012 10:01 AM, David Koch wrote:
Hello Lars,
Thank you. Where can I find the lily library? I can't find it on github or
Google.
http://www.lilyproject.org/lily/index.html
/David
On Fri, Nov 30, 2012 at 3:54 AM, lars hofhansl <[email protected]> wrote:
As I said, look at the lily library they have solved exactly that problem,
I've used that before.
It has encodings for Ints/Longs/Floats/Doubles/BigDecimals, to encode them
such the byte array will sort according to the magnitude of the value which
includes the sign and the floating point exponent.
It's a very common problem :)
-- Lars
----- Original Message -----
From: David Koch <[email protected]>
To: [email protected]
Cc:
Sent: Thursday, November 29, 2012 3:00 PM
Subject: Re: Using doubles and longs as ordering row values
Hello,
I am having a similar issue, only I need to preserve the order of
qualifiers which are serialized signed longs - rather than row keys. The
latter is addressed by the orderly library which was mentioned above. Can
this library be re-used for my purpose? I imagine this is not an exotic
requirement so I am also interested in knowing how other people have solved
this problem.
Thank you,
/David
On Tue, Nov 6, 2012 at 6:07 AM, Jonathan Bishop <[email protected]
wrote:
Thanks Dave,
That looks like what I need.
Jon
On Mon, Nov 5, 2012 at 4:27 PM, Dave Latham <[email protected]> wrote:
This fork looks a bit more up to date:
https://github.com/ndimiduk/orderly
On Mon, Nov 5, 2012 at 4:26 PM, Dave Latham <[email protected]>
wrote:
Here's a project to deal with this issue specifically. I'm not sure
of
it's status:
https://github.com/conikeec/orderly
On Mon, Nov 5, 2012 at 4:01 PM, lars hofhansl <[email protected]>
wrote:
Have a look at the lily library. It has code to encode Longs/Doubles
into
bytes such that resulting bytes sort as expected based on the
numbers.
-- Lars
________________________________
From: Jonathan Bishop <[email protected]>
To: "[email protected]" <[email protected]>
Sent: Monday, November 5, 2012 10:41 AM
Subject: Using doubles and longs as ordering row values
Hi,
In my application my row values are doubles. I would like my scans
to
traverse the rows in order of increasing values.
But if I simply use
double d = ....
byte[] row = Bytes.toBytes(d);
I will get an ordering which is based on the byte values of doubles,
not
on
the value of the doubles themselves.
I see also that integer values have the same issue due to the first
bit
being the sign bit. So negative values will come after positive
values.
Any suggestions?
Thanks,
Jon
10mo. ANIVERSARIO DE LA CREACION DE LA UNIVERSIDAD DE LAS CIENCIAS
INFORMATICAS...
CONECTADOS AL FUTURO, CONECTADOS A LA REVOLUCION
http://www.uci.cu
http://www.facebook.com/universidad.uci
http://www.flickr.com/photos/universidad_uci
--
Marcos Luis OrtÃz Valmaseda
about.me/marcosortiz <http://about.me/marcosortiz>
@marcosluis2186 <http://twitter.com/marcosluis2186>
10mo. ANIVERSARIO DE LA CREACION DE LA UNIVERSIDAD DE LAS CIENCIAS
INFORMATICAS...
CONECTADOS AL FUTURO, CONECTADOS A LA REVOLUCION
http://www.uci.cu
http://www.facebook.com/universidad.uci
http://www.flickr.com/photos/universidad_uci
