How to get the min and max values from facets?

[Vincent Pérès <vi...@gmail.com>]

Hello,

I'm using Solr 1.3. I would like to get only minimum and maximum values from
a facet.
In fact I'm using a range to get the results : [value TO value], and I don't
need to get the facets list in my XML results (which could be more than
hundred thousands)... so, I have to display the range (minimum and maximum
values) from a facet. Is there any way to do that?
I found the new statistics components, follow the link :
http://wiki.apache.org/solr/StatsComponent
But it's for solr 1.4.

Does anyone have any idea?

Thank you !
Vincent
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Re: How to get the min and max values from facets?

[Chris Hostetter <ho...@fucit.org>]

: myfacet, ASC, limit 1
: myfacet, DESC, limit 1
: So I can get the first value and the last one.
: 
: Do you think I will get more performance with this way than using stats?

I'm guessing that by all measurable metrics, the StatsComponent will blow 
that out of the water -- i was just putting it out there as a possible 
alternative if you didn't feel comfortable enough with java to compile the 
StatsComponent and use it with Solr 1.3.



-Hoss

Re: How to get the min and max values from facets?

[Vincent Pérès <vi...@gmail.com>]

Hello,

Yes I understand, like :
myfacet, ASC, limit 1
myfacet, DESC, limit 1
So I can get the first value and the last one.

Do you think I will get more performance with this way than using stats?

Thanks !
Vincent
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Re: How to get the min and max values from facets?

[Chris Hostetter <ho...@fucit.org>]

: hundred thousands)... so, I have to display the range (minimum and maximum
: values) from a facet. Is there any way to do that?
: I found the new statistics components, follow the link :
: http://wiki.apache.org/solr/StatsComponent
: But it's for solr 1.4.

there haven't been many changes on the trunk since 1.3 that StatsComponent 
would depend on, you can probably use it as is.

: Does anyone have any idea?

assuming the field you want the min/max for are stored, you can do 
multiple hits sorted on that field to get the highest and lowest value.



-Hoss