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Posted to solr-user@lucene.apache.org by michael8 <mi...@saracatech.com> on 2009/11/02 15:43:16 UTC

question about collapse.type = adjacent

Hi,

I would like to confirm if 'adjacent' in collapse.type means the documents
(with the same collapse field value) are considered adjacent *after* the
'sort' param from the query has been applied, or *before*?  I would think it
would be *after* since collapse feature primarily is meant for presentation
use.

Thanks,
Michael
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Re: question about collapse.type = adjacent

Posted by michael8 <mi...@saracatech.com>.
Hi Martijn,

This clarifies it all for me.  Thanks a lot!

Michael


Martijn v Groningen wrote:
> 
> Hi Micheal,
> 
> Field collapsing is basicly done in two steps. The first step is to
> get the uncollapsed sorted (whether it is score or a field value)
> documents and the second step is to apply the collapse algorithm on
> the uncollapsed documents. So yes, when specifying
> collapse.type=adjacent the documents can get collapsed after the sort
> has been applied, but this also the case when not specifying
> collapse.type=adjacent
> I hope this answers your question.
> 
> Cheers,
> 
> Martijn
> 
> 2009/11/2 michael8 <mi...@saracatech.com>:
>>
>> Hi,
>>
>> I would like to confirm if 'adjacent' in collapse.type means the
>> documents
>> (with the same collapse field value) are considered adjacent *after* the
>> 'sort' param from the query has been applied, or *before*?  I would think
>> it
>> would be *after* since collapse feature primarily is meant for
>> presentation
>> use.
>>
>> Thanks,
>> Michael
>> --
>> View this message in context:
>> http://old.nabble.com/question-about-collapse.type-%3D-adjacent-tp26157114p26157114.html
>> Sent from the Solr - User mailing list archive at Nabble.com.
>>
>>
> 
> 
> 
> -- 
> Met vriendelijke groet,
> 
> Martijn van Groningen
> 
> 

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Re: question about collapse.type = adjacent

Posted by Martijn v Groningen <ma...@gmail.com>.
Hi Micheal,

Field collapsing is basicly done in two steps. The first step is to
get the uncollapsed sorted (whether it is score or a field value)
documents and the second step is to apply the collapse algorithm on
the uncollapsed documents. So yes, when specifying
collapse.type=adjacent the documents can get collapsed after the sort
has been applied, but this also the case when not specifying
collapse.type=adjacent
I hope this answers your question.

Cheers,

Martijn

2009/11/2 michael8 <mi...@saracatech.com>:
>
> Hi,
>
> I would like to confirm if 'adjacent' in collapse.type means the documents
> (with the same collapse field value) are considered adjacent *after* the
> 'sort' param from the query has been applied, or *before*?  I would think it
> would be *after* since collapse feature primarily is meant for presentation
> use.
>
> Thanks,
> Michael
> --
> View this message in context: http://old.nabble.com/question-about-collapse.type-%3D-adjacent-tp26157114p26157114.html
> Sent from the Solr - User mailing list archive at Nabble.com.
>
>



-- 
Met vriendelijke groet,

Martijn van Groningen