[jira] Issue Comment Edited: (SOLR-236) Field collapsing

["Emmanuel Keller (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SOLR-236?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12538339 ] 

ekeller edited comment on SOLR-236 at 10/28/07 1:55 PM:
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Here is the patch for solr 1.3 rev 589395.

I made some performance improvement. No more cache. I use bitdocset or hashdocset depending on solrconfig.hashdocsetmaxsize variable.

Regards,
Emmanuel Keller.

      was (Author: ekeller):
    Here is the patch for solr 1.3 rev 589395.

I made some performance improvment. No more cache. We are using bitdocset or hashdocset using solrconfig.hashdocsetmaxsize variable.

Regards,
Emmanuel Keller.
  
> 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, field_collapsing_1.3.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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