Solr, mail # user - pagination and groups

pagination and groups

Benson Margulies 2011-07-01, 17:56

I'm a bit puzzled while trying to adapt some pagination code in
javascript to a grouped query.

I'm using:

'group' : 'true',
'group.limit' : 5, // something to show ...
'group.field' : [ 'bt.nearDupCluster', 'bt.nearStoryCluster' ]

and displaying each field's worth in a tab. how do I work 'start', etc?

Re: pagination and groups

Tomás Fernández Löbbe 2011-07-01, 18:40

I'm not sure I understand what you want to do. To paginate with groups you
can use "start" and "rows" as with ungrouped queries. with "group.ngroups"
(Something I found a couple of days ago) you can show the total number of
groups. "group.limit" tells Solr how many (max) documents you want to see
for each group.

On Fri, Jul 1, 2011 at 2:56 PM, Benson Margulies <[EMAIL PROTECTED]>wrote:

> I'm a bit puzzled while trying to adapt some pagination code in
> javascript to a grouped query.
>
> I'm using:
>
> 'group' : 'true',
> 'group.limit' : 5, // something to show ...
> 'group.field' : [ 'bt.nearDupCluster', 'bt.nearStoryCluster' ]
>
> and displaying each field's worth in a tab. how do I work 'start', etc?
>

Re: pagination and groups

Benson Margulies 2011-07-01, 18:53

What takes the place of response.response.numFound?

2011/7/1 Tomás Fernández Löbbe <[EMAIL PROTECTED]>:
> I'm not sure I understand what you want to do. To paginate with groups you
> can use "start" and "rows" as with ungrouped queries. with "group.ngroups"
> (Something I found a couple of days ago) you can show the total number of
> groups. "group.limit" tells Solr how many (max) documents you want to see
> for each group.
>
> On Fri, Jul 1, 2011 at 2:56 PM, Benson Margulies <[EMAIL PROTECTED]>wrote:
>
>> I'm a bit puzzled while trying to adapt some pagination code in
>> javascript to a grouped query.
>>
>> I'm using:
>>
>> 'group' : 'true',
>> 'group.limit' : 5, // something to show ...
>> 'group.field' : [ 'bt.nearDupCluster', 'bt.nearStoryCluster' ]
>>
>> and displaying each field's worth in a tab. how do I work 'start', etc?
>>
>

Re: pagination and groups

Tomás Fernández Löbbe 2011-07-01, 19:02

mmmm are you using group.main=true?
I didn't see the code for this and the documentation doesn't specify it, but
I tried "group.ngroups=true" and using "group.main=true", the "ngroups"
attribute is not brought back. If you are not using "group.main=true", then
by setting "group.ngroups=true" you'll see the value "ngroups" which means
the number of groups that matched the query.

NOTE: All this is in trunk, I'm not sure if it is on 3.3
On Fri, Jul 1, 2011 at 3:53 PM, Benson Margulies <[EMAIL PROTECTED]>wrote:

> What takes the place of response.response.numFound?
>
>
>
> 2011/7/1 Tomás Fernández Löbbe <[EMAIL PROTECTED]>:
> > I'm not sure I understand what you want to do. To paginate with groups
> you
> > can use "start" and "rows" as with ungrouped queries. with
> "group.ngroups"
> > (Something I found a couple of days ago) you can show the total number of
> > groups. "group.limit" tells Solr how many (max) documents you want to see
> > for each group.
> >
> > On Fri, Jul 1, 2011 at 2:56 PM, Benson Margulies <[EMAIL PROTECTED]
> >wrote:
> >
> >> I'm a bit puzzled while trying to adapt some pagination code in
> >> javascript to a grouped query.
> >>
> >> I'm using:
> >>
> >> 'group' : 'true',
> >> 'group.limit' : 5, // something to show ...
> >> 'group.field' : [ 'bt.nearDupCluster', 'bt.nearStoryCluster' ]
> >>
> >> and displaying each field's worth in a tab. how do I work 'start', etc?
> >>
> >
>

Re: pagination and groups

Benson Margulies 2011-07-01, 23:05

I'm using a version taken from the trunk some time ago. I'm not
setting groups.main, I just started setting groups.ngroups, and
nothing doing. So I guess I don't have a new enough grab from the
trunk.

2011/7/1 Tomás Fernández Löbbe <[EMAIL PROTECTED]>:
> mmmm are you using group.main=true?
> I didn't see the code for this and the documentation doesn't specify it, but
> I tried "group.ngroups=true" and using "group.main=true", the "ngroups"
> attribute is not brought back. If you are not using "group.main=true", then
> by setting "group.ngroups=true" you'll see the value "ngroups" which means
> the number of groups that matched the query.
>
> NOTE: All this is in trunk, I'm not sure if it is on 3.3
>
>
> On Fri, Jul 1, 2011 at 3:53 PM, Benson Margulies <[EMAIL PROTECTED]>wrote:
>
>> What takes the place of response.response.numFound?
>>
>>
>>
>> 2011/7/1 Tomás Fernández Löbbe <[EMAIL PROTECTED]>:
>> > I'm not sure I understand what you want to do. To paginate with groups
>> you
>> > can use "start" and "rows" as with ungrouped queries. with
>> "group.ngroups"
>> > (Something I found a couple of days ago) you can show the total number of
>> > groups. "group.limit" tells Solr how many (max) documents you want to see
>> > for each group.
>> >
>> > On Fri, Jul 1, 2011 at 2:56 PM, Benson Margulies <[EMAIL PROTECTED]
>> >wrote:
>> >
>> >> I'm a bit puzzled while trying to adapt some pagination code in
>> >> javascript to a grouped query.
>> >>
>> >> I'm using:
>> >>
>> >> 'group' : 'true',
>> >> 'group.limit' : 5, // something to show ...
>> >> 'group.field' : [ 'bt.nearDupCluster', 'bt.nearStoryCluster' ]
>> >>
>> >> and displaying each field's worth in a tab. how do I work 'start', etc?
>> >>
>> >
>>
>

Re: pagination and groups

Yonik Seeley 2011-07-02, 19:06

2011/7/1 Tomás Fernández Löbbe <[EMAIL PROTECTED]>:
> I'm not sure I understand what you want to do. To paginate with groups you
> can use "start" and "rows" as with ungrouped queries. with "group.ngroups"
> (Something I found a couple of days ago) you can show the total number of
> groups. "group.limit" tells Solr how many (max) documents you want to see
> for each group.

Right - just be aware that requesting the total number of groups (via
group.ngroups) is pretty memory and resource intensive - that's why
there is a separate option for it.

-Yonik
http://www.lucidimagination.com

Re: pagination and groups

Benson Margulies 2011-07-02, 23:34

Hey, I don't suppose you could easily tell me the rev in which ngroups arrived?

Also, how does ngroups compare to the 'matches' value inside each group?

On Sat, Jul 2, 2011 at 3:06 PM, Yonik Seeley <[EMAIL PROTECTED]> wrote:
> 2011/7/1 Tomás Fernández Löbbe <[EMAIL PROTECTED]>:
>> I'm not sure I understand what you want to do. To paginate with groups you
>> can use "start" and "rows" as with ungrouped queries. with "group.ngroups"
>> (Something I found a couple of days ago) you can show the total number of
>> groups. "group.limit" tells Solr how many (max) documents you want to see
>> for each group.
>
> Right - just be aware that requesting the total number of groups (via
> group.ngroups) is pretty memory and resource intensive - that's why
> there is a separate option for it.
>
> -Yonik
> http://www.lucidimagination.com
>

Re: pagination and groups

Yonik Seeley 2011-07-03, 05:48

On Sat, Jul 2, 2011 at 7:34 PM, Benson Margulies <[EMAIL PROTECTED]> wrote:
> Hey, I don't suppose you could easily tell me the rev in which ngroups arrived?

1137037 I believe. Grouping originated in Solr, was refactored to a
shared lucene/solr module, including the ability to get the total
number of groups, and then Solr's implementation was cut over to that.

> Also, how does ngroups compare to the 'matches' value inside each group?

The units for "matches" is currently number of documents, while the
units for "ngroups" is number of groups.
-Yonik
http://www.lucidimagination.com