SlicePredicate using LexicalUUIDType

[Jim]

I've been trying to create a SlicePredicate for a column that has a
comparator defined as CompositeType(LexicalUUIDType,LexicalUUIDType).

So I want to obtain all the columns where the first part of the
composite name is a single UUID and where the second part is ALL of
the UUIDs for the given UUID in the first part. ( I hope I'm being
clear).

What I've been trying (and it's not working) is this:

CompositeType.Builder start = CompositeType.Builder.newBuilder(2);
start.addBytes(orgKey);
start.addBytes(Bytes.fromUuid("ffffffff-ffff-ffff-ffff-
ffffffffffff"));

CompositeType.Builder finish = CompositeType.Builder.newBuilder(2);
finish.addBytes(orgKey);
finish.addBytes(Bytes.fromUuid("00000000-0000-0000-0000-000000000000"));

SlicePredicate slice = Selector.newColumnsPredicate(start.build(),
finish.build(), false, 100);


I'm I going about this the right way? If so, can anyone point out why
this isn't working?

Thank you,
Jim

[Dan Washusen]

Hi Jim, 

There's nothing obvious that jumps out at me but I haven't used the CompositeType to create a SlicePredicate (or the LexicalUUIDType for that matter).  

Are you seeing any results, an error, unexpected results?  What happens if you flip the start and finish params?

Good good.

Regards,

-- 
Dan Washusen

Make big files fly

visit digitalpigeon.com

[ali serghini]

Hi Jim,

There is a unit test for CompositeType in the source code [https://github.com/s7/scale7-pelops/blob/master/src/test/java/org/scale7/cassandra/pelops/CompositeTypeIntegrationTest.java]. Take a look at "testSlice".

- Ali

[Jim]

Hey Dan,

So it just returns an empty set of results. There's no error. I'll
trying flipping the values around and see what happens.

Cheers,
Jim

On Mar 18, 5:07 pm, Dan Washusen <d...@reactive.org> wrote:
> Hi Jim,
> There's nothing obvious that jumps out at me but I haven't used the CompositeType to create a SlicePredicate (or the LexicalUUIDType for that matter).
>
> Are you seeing any results, an error, unexpected results?  What happens if you flip the start and finish params?
>
> Good good.
>
> Regards,--
> Dan Washusen
> Make big files fly

> visit digitalpigeon.com (http://digitalpigeon.com)

[Jim]

Hey Ali,

Thanks for link. I looked at the testSlice example and it looks
good. The thing is, I can get the slice to work with other types such
as UTF8Type but I can't get it to work with LexicalUUIDType.

At the moment, I'm thinking that I'll change my column comparator and
use something other than LexicalUUITType.

Cheers,
Jim

On Mar 18, 11:29 pm, ali serghini <dev.sergh...@gmail.com> wrote:
> Hi Jim,
>

> There is a unit test for CompositeType in the source code [https://github.com/s7/scale7-pelops/blob/master/src/test/java/org/sca...].

> Take a look at "testSlice".
>
> - Ali
>
>
>
>
>
>
>
> On Sun, Mar 18, 2012 at 5:07 PM, Dan Washusen <d...@reactive.org> wrote:
> >  Hi Jim,
> > There's nothing obvious that jumps out at me but I haven't used the
> > CompositeType to create a SlicePredicate (or the LexicalUUIDType for that
> > matter).
>
> > Are you seeing any results, an error, unexpected results?  What happens if
> > you flip the start and finish params?
>
> > Good good.
>
> > Regards,
> > --
> > Dan Washusen

> > *Make big files fly*