Mapping file specifics

[Lewis John Mcgibbney <le...@gmail.com>]

Hi,

With regards to the conf/*-mapping.xml files we maintain. Can someone
please explain a bit about the 'qualifier' attribute within each
field? What purpose does this have, or what does it actually do?

Thanks

Lewis

-- 
Lewis

Re: Mapping file specifics

[Lewis John Mcgibbney <le...@gmail.com>]

Hi Ferdy,

Yeah, from some poking around, I think the qualifier attribute applies
to both HBase and Accumulo, but not Cassandra and SqlStore as you
mention.
I'm not sure that the Cassandra stuff is 100%, just now so I'm looking
into improving it.

Thanks

Lewis

On Mon, May 7, 2012 at 3:04 PM, Ferdy Galema <fe...@kalooga.com> wrote:
> Hi,
>
> For HBase it means that the field is mapped to a specific family+qualifier.
> It specifies the backend column name.  This may not be the case for other
> stores. Sql for example simply has a single name (column).
>
> Hope this is still of any help.
>
> Ferdy
>
>
> On Fri, May 4, 2012 at 5:01 PM, Lewis John Mcgibbney
> <le...@gmail.com> wrote:
>>
>> Hi,
>>
>> With regards to the conf/*-mapping.xml files we maintain. Can someone
>> please explain a bit about the 'qualifier' attribute within each
>> field? What purpose does this have, or what does it actually do?
>>
>> Thanks
>>
>> Lewis
>>
>> --
>> Lewis
>
>



-- 
Lewis

Re: Mapping file specifics

[Ferdy Galema <fe...@kalooga.com>]

Hi,

For HBase it means that the field is mapped to a specific family+qualifier.
It specifies the backend column name.  This may not be the case for other
stores. Sql for example simply has a single name (column).

Hope this is still of any help.

Ferdy

On Fri, May 4, 2012 at 5:01 PM, Lewis John Mcgibbney <
lewis.mcgibbney@gmail.com> wrote:

> Hi,
>
> With regards to the conf/*-mapping.xml files we maintain. Can someone
> please explain a bit about the 'qualifier' attribute within each
> field? What purpose does this have, or what does it actually do?
>
> Thanks
>
> Lewis
>
> --
> Lewis
>