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https://issues.apache.org/jira/browse/SOLR-236?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12538327
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Ryan McKinley commented on SOLR-236:
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Hi Tracy-
There has not been much movement on this while we get SOLR-281 sorted (I hope
this happens soon) -- once that is in, there will hopefully be an updated patch
on the 1.3 branch that will be posted here.
"1.3" is not a branch yet -- it is the trunk revision that most patches work
with. Only when it becomes an official release, will it actually get called
1.3 in the repository.
If you need to show field collapsing soon, I think your best bet (i have not
tried it) is to apply the ' field_collapsing_1.1.0.patch' to the 1.1.0 branch (
http://svn.apache.org/repos/asf/lucene/solr/tags/release-1.1.0/ ) But if you
can wait a few weeks, it will *hopefully* be available in trunk (or easily
patchable from trunk)
ryan
> 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
> Attachments: field_collapsing_1.1.0.patch,
> SOLR-236-FieldCollapsing.patch, SOLR-236-FieldCollapsing.patch,
> SOLR-236-FieldCollapsing.patch
>
>
> This patch include a new feature called "Field collapsing".
> "Used in order to collapse a group of results with similar value for a given
> 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 documents from
> this site" link. See also Duplicate detection."
> http://www.fastsearch.com/glossary.aspx?m=48&amid=299
> 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
> collapsing
> 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 ;-)
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