Is there anyway to sort differently for facet values?

[Way Cool <wa...@gmail.com>]

Hi, guys,

Is there anyway to sort differently for facet values? For example, sometimes
I want to sort facet values by their values instead of # of docs, and I want
to be able to have a predefined order for certain facets as well. Is that
possible in Solr we can do that?

Thanks,

YH

Re: Is there anyway to sort differently for facet values?

[Way Cool <wa...@gmail.com>]

That's right. It should work if I already know these values ahead of time,
however I want to use business rules to control display orders for different
search terms. Maybe I have to code it by myself. Thanks everyone.

On Fri, Aug 5, 2011 at 12:25 AM, Jayendra Patil <
jayendra.patil.001@gmail.com> wrote:

> you can give it a try with the facet.sort.
>
> We had such a requirement for sorting facets by order determined by
> other field and had to resort to a very crude way to get through it.
> We pre-pended the facets values with the order in which it had to be
> displayed ... and used the facet.sort to sort alphabetically.
>
> e.g. prepend Small -> 0_Small, Medium -> 1_Medium, Large -> 2_Large, XL ->
> 3_XL
>
> You would need to handle the display part though.
>
> Surely not the best way, but worked for us.
>
> Regards,
> Jayendra
>
> On Thu, Aug 4, 2011 at 4:38 PM, Sethi, Parampreet
> <pa...@teamaol.com> wrote:
> > It can be achieved by creating own (app specific) custom comparators for
> > fields defined in schema.xml and having an extra attribute to specify the
> > comparator class in the field tag itself. But it will require changes in
> the
> > Solr to support this feature. (Not sure if it's feasible though just
> > throwing an idea.)
> >
> > -param
> >
> > On 8/4/11 4:29 PM, "Jonathan Rochkind" <ro...@jhu.edu> wrote:
> >
> >> No, it can not. It just sorts "alphabetically", actually by raw
> byte-order.
> >>
> >> No other facet sorting functionality is available, and it would be
> >> tricky to implement in a performant way because of the way lucene
> >> works.  But it would certainly be useful to me too if someone could
> >> figure out a way to do it.
> >>
> >> On 8/4/2011 2:43 PM, Way Cool wrote:
> >>> Thanks Eric for your reply. I am aware of facet.sort, but I haven't
> used it.
> >>> I will try that though.
> >>>
> >>> Can it handle the values below in the correct order?
> >>> Under 10
> >>> 10 - 20
> >>> 20 - 30
> >>> Above 30
> >>>
> >>> Or
> >>> Small
> >>> Medium
> >>> Large
> >>> XL
> >>> ...
> >>>
> >>> My second question is that if Solr can't do that for the values above
> by
> >>> using facet.sort. Is there any other ways in Solr?
> >>>
> >>> Thanks in advance,
> >>>
> >>> YH
> >>>
> >>> On Wed, Aug 3, 2011 at 8:35 PM, Erick Erickson<erickerickson@gmail.com
> >wrote:
> >>>
> >>>> have you looked at the facet.sort parameter? The "index" value is what
> I
> >>>> think you want.
> >>>>
> >>>> Best
> >>>> Erick
> >>>> On Aug 3, 2011 7:03 PM, "Way Cool"<wa...@gmail.com>  wrote:
> >>>>> Hi, guys,
> >>>>>
> >>>>> Is there anyway to sort differently for facet values? For example,
> >>>> sometimes
> >>>>> I want to sort facet values by their values instead of # of docs, and
> I
> >>>> want
> >>>>> to be able to have a predefined order for certain facets as well. Is
> that
> >>>>> possible in Solr we can do that?
> >>>>>
> >>>>> Thanks,
> >>>>>
> >>>>> YH
> >
> >
>

Re: Is there anyway to sort differently for facet values?

[Jayendra Patil <ja...@gmail.com>]

you can give it a try with the facet.sort.

We had such a requirement for sorting facets by order determined by
other field and had to resort to a very crude way to get through it.
We pre-pended the facets values with the order in which it had to be
displayed ... and used the facet.sort to sort alphabetically.

e.g. prepend Small -> 0_Small, Medium -> 1_Medium, Large -> 2_Large, XL -> 3_XL

You would need to handle the display part though.

Surely not the best way, but worked for us.

Regards,
Jayendra

On Thu, Aug 4, 2011 at 4:38 PM, Sethi, Parampreet
<pa...@teamaol.com> wrote:
> It can be achieved by creating own (app specific) custom comparators for
> fields defined in schema.xml and having an extra attribute to specify the
> comparator class in the field tag itself. But it will require changes in the
> Solr to support this feature. (Not sure if it's feasible though just
> throwing an idea.)
>
> -param
>
> On 8/4/11 4:29 PM, "Jonathan Rochkind" <ro...@jhu.edu> wrote:
>
>> No, it can not. It just sorts "alphabetically", actually by raw byte-order.
>>
>> No other facet sorting functionality is available, and it would be
>> tricky to implement in a performant way because of the way lucene
>> works.  But it would certainly be useful to me too if someone could
>> figure out a way to do it.
>>
>> On 8/4/2011 2:43 PM, Way Cool wrote:
>>> Thanks Eric for your reply. I am aware of facet.sort, but I haven't used it.
>>> I will try that though.
>>>
>>> Can it handle the values below in the correct order?
>>> Under 10
>>> 10 - 20
>>> 20 - 30
>>> Above 30
>>>
>>> Or
>>> Small
>>> Medium
>>> Large
>>> XL
>>> ...
>>>
>>> My second question is that if Solr can't do that for the values above by
>>> using facet.sort. Is there any other ways in Solr?
>>>
>>> Thanks in advance,
>>>
>>> YH
>>>
>>> On Wed, Aug 3, 2011 at 8:35 PM, Erick Erickson<er...@gmail.com>wrote:
>>>
>>>> have you looked at the facet.sort parameter? The "index" value is what I
>>>> think you want.
>>>>
>>>> Best
>>>> Erick
>>>> On Aug 3, 2011 7:03 PM, "Way Cool"<wa...@gmail.com>  wrote:
>>>>> Hi, guys,
>>>>>
>>>>> Is there anyway to sort differently for facet values? For example,
>>>> sometimes
>>>>> I want to sort facet values by their values instead of # of docs, and I
>>>> want
>>>>> to be able to have a predefined order for certain facets as well. Is that
>>>>> possible in Solr we can do that?
>>>>>
>>>>> Thanks,
>>>>>
>>>>> YH
>
>

Re: Is there anyway to sort differently for facet values?

["Sethi, Parampreet" <pa...@teamaol.com>]

It can be achieved by creating own (app specific) custom comparators for
fields defined in schema.xml and having an extra attribute to specify the
comparator class in the field tag itself. But it will require changes in the
Solr to support this feature. (Not sure if it's feasible though just
throwing an idea.)

-param

On 8/4/11 4:29 PM, "Jonathan Rochkind" <ro...@jhu.edu> wrote:

> No, it can not. It just sorts "alphabetically", actually by raw byte-order.
> 
> No other facet sorting functionality is available, and it would be
> tricky to implement in a performant way because of the way lucene
> works.  But it would certainly be useful to me too if someone could
> figure out a way to do it.
> 
> On 8/4/2011 2:43 PM, Way Cool wrote:
>> Thanks Eric for your reply. I am aware of facet.sort, but I haven't used it.
>> I will try that though.
>> 
>> Can it handle the values below in the correct order?
>> Under 10
>> 10 - 20
>> 20 - 30
>> Above 30
>> 
>> Or
>> Small
>> Medium
>> Large
>> XL
>> ...
>> 
>> My second question is that if Solr can't do that for the values above by
>> using facet.sort. Is there any other ways in Solr?
>> 
>> Thanks in advance,
>> 
>> YH
>> 
>> On Wed, Aug 3, 2011 at 8:35 PM, Erick Erickson<er...@gmail.com>wrote:
>> 
>>> have you looked at the facet.sort parameter? The "index" value is what I
>>> think you want.
>>> 
>>> Best
>>> Erick
>>> On Aug 3, 2011 7:03 PM, "Way Cool"<wa...@gmail.com>  wrote:
>>>> Hi, guys,
>>>> 
>>>> Is there anyway to sort differently for facet values? For example,
>>> sometimes
>>>> I want to sort facet values by their values instead of # of docs, and I
>>> want
>>>> to be able to have a predefined order for certain facets as well. Is that
>>>> possible in Solr we can do that?
>>>> 
>>>> Thanks,
>>>> 
>>>> YH

Re: Is there anyway to sort differently for facet values?

[Jonathan Rochkind <ro...@jhu.edu>]

No, it can not. It just sorts "alphabetically", actually by raw byte-order.

No other facet sorting functionality is available, and it would be 
tricky to implement in a performant way because of the way lucene 
works.  But it would certainly be useful to me too if someone could 
figure out a way to do it.

On 8/4/2011 2:43 PM, Way Cool wrote:
> Thanks Eric for your reply. I am aware of facet.sort, but I haven't used it.
> I will try that though.
>
> Can it handle the values below in the correct order?
> Under 10
> 10 - 20
> 20 - 30
> Above 30
>
> Or
> Small
> Medium
> Large
> XL
> ...
>
> My second question is that if Solr can't do that for the values above by
> using facet.sort. Is there any other ways in Solr?
>
> Thanks in advance,
>
> YH
>
> On Wed, Aug 3, 2011 at 8:35 PM, Erick Erickson<er...@gmail.com>wrote:
>
>> have you looked at the facet.sort parameter? The "index" value is what I
>> think you want.
>>
>> Best
>> Erick
>> On Aug 3, 2011 7:03 PM, "Way Cool"<wa...@gmail.com>  wrote:
>>> Hi, guys,
>>>
>>> Is there anyway to sort differently for facet values? For example,
>> sometimes
>>> I want to sort facet values by their values instead of # of docs, and I
>> want
>>> to be able to have a predefined order for certain facets as well. Is that
>>> possible in Solr we can do that?
>>>
>>> Thanks,
>>>
>>> YH

Re: Is there anyway to sort differently for facet values?

[Way Cool <wa...@gmail.com>]

Thanks Eric for your reply. I am aware of facet.sort, but I haven't used it.
I will try that though.

Can it handle the values below in the correct order?
Under 10
10 - 20
20 - 30
Above 30

Or
Small
Medium
Large
XL
...

My second question is that if Solr can't do that for the values above by
using facet.sort. Is there any other ways in Solr?

Thanks in advance,

YH

On Wed, Aug 3, 2011 at 8:35 PM, Erick Erickson <er...@gmail.com>wrote:

> have you looked at the facet.sort parameter? The "index" value is what I
> think you want.
>
> Best
> Erick
> On Aug 3, 2011 7:03 PM, "Way Cool" <wa...@gmail.com> wrote:
> > Hi, guys,
> >
> > Is there anyway to sort differently for facet values? For example,
> sometimes
> > I want to sort facet values by their values instead of # of docs, and I
> want
> > to be able to have a predefined order for certain facets as well. Is that
> > possible in Solr we can do that?
> >
> > Thanks,
> >
> > YH
>

Re: Is there anyway to sort differently for facet values?

[Erick Erickson <er...@gmail.com>]

have you looked at the facet.sort parameter? The "index" value is what I
think you want.

Best
Erick
On Aug 3, 2011 7:03 PM, "Way Cool" <wa...@gmail.com> wrote:
> Hi, guys,
>
> Is there anyway to sort differently for facet values? For example,
sometimes
> I want to sort facet values by their values instead of # of docs, and I
want
> to be able to have a predefined order for certain facets as well. Is that
> possible in Solr we can do that?
>
> Thanks,
>
> YH