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Date: Tue, 16 Nov 2010 15:22:56 -0500 (EST)
From: "Bill Bell (JIRA)" <jira@apache.org>
To: dev@lucene.apache.org
Subject: [jira] Commented: (SOLR-236) Field collapsing
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    [ https://issues.apache.org/jira/browse/SOLR-236?page=3Dcom.atlassian.j=
ira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=3D129326=
40#action_12932640 ]=20

Bill Bell commented on SOLR-236:
--------------------------------

I found a solution, but is is not ideal. I need to be able to get a count o=
f facets (left side and not left side):

http://localhosT:8983/solr/select?facet=3Dtrue&facet.field=3Dhgid&facet.lim=
it=3D100000&facet.mincount=3D1

(HGID is the group by)

I need to I get the following but need left side number. So instead of 10, =
I need "3". Is there anyway to do that? Just return 3.

- <lst name=3D"hgid">
  <int name=3D"HGPY0056D09F7B57442E8">4</int>=20
  <int name=3D"HGPY00A33AD7808996941">3</int>=20
  <int name=3D"HGPY00D6274FD07B4EE7A">3</int>=20
  </lst>


> Field collapsing
> ----------------
>
>                 Key: SOLR-236
>                 URL: https://issues.apache.org/jira/browse/SOLR-236
>             Project: Solr
>          Issue Type: New Feature
>          Components: search
>    Affects Versions: 1.3
>            Reporter: Emmanuel Keller
>            Assignee: Shalin Shekhar Mangar
>             Fix For: Next
>
>         Attachments: collapsing-patch-to-1.3.0-dieter.patch, collapsing-p=
atch-to-1.3.0-ivan.patch, collapsing-patch-to-1.3.0-ivan_2.patch, collapsin=
g-patch-to-1.3.0-ivan_3.patch, DocSetScoreCollector.java, field-collapse-3.=
patch, field-collapse-4-with-solrj.patch, field-collapse-5.patch, field-col=
lapse-5.patch, field-collapse-5.patch, field-collapse-5.patch, field-collap=
se-5.patch, field-collapse-5.patch, field-collapse-5.patch, field-collapse-=
5.patch, field-collapse-5.patch, field-collapse-5.patch, field-collapse-5.p=
atch, field-collapse-5.patch, field-collapse-5.patch, field-collapse-5.patc=
h, field-collapse-5.patch, field-collapse-solr-236-2.patch, field-collapse-=
solr-236.patch, field-collapsing-extended-592129.patch, field_collapsing_1.=
1.0.patch, field_collapsing_1.3.patch, field_collapsing_dsteigerwald.diff, =
field_collapsing_dsteigerwald.diff, field_collapsing_dsteigerwald.diff, Non=
AdjacentDocumentCollapser.java, NonAdjacentDocumentCollapserTest.java, quas=
idistributed.additional.patch, SOLR-236-1_4_1-paging-totals-working.patch, =
SOLR-236-1_4_1.patch, SOLR-236-FieldCollapsing.patch, SOLR-236-FieldCollaps=
ing.patch, SOLR-236-FieldCollapsing.patch, SOLR-236-trunk.patch, SOLR-236-t=
runk.patch, SOLR-236-trunk.patch, SOLR-236-trunk.patch, SOLR-236-trunk.patc=
h, SOLR-236.patch, SOLR-236.patch, SOLR-236.patch, SOLR-236.patch, SOLR-236=
.patch, SOLR-236.patch, SOLR-236.patch, SOLR-236.patch, solr-236.patch, SOL=
R-236_collapsing.patch, SOLR-236_collapsing.patch
>
>
> This patch include a new feature called "Field collapsing".
> "Used in order to collapse a group of results with similar value for a gi=
ven field to a single entry in the result set. Site collapsing is a special=
 case of this, where all results for a given web site is collapsed into one=
 or two entries in the result set, typically with an associated "more docum=
ents from this site" link. See also Duplicate detection."
> http://www.fastsearch.com/glossary.aspx?m=3D48&amid=3D299
> The implementation add 3 new query parameters (SolrParams):
> "collapse.field" to choose the field used to group results
> "collapse.type" normal (default value) or adjacent
> "collapse.max" to select how many continuous results are allowed before c=
ollapsing
> TODO (in progress):
> - More documentation (on source code)
> - Test cases
> Two patches:
> - "field_collapsing.patch" for current development version
> - "field_collapsing_1.1.0.patch" for Solr-1.1.0
> P.S.: Feedback and misspelling correction are welcome ;-)

--=20
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