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From "Doug Steigerwald (JIRA)" <j...@apache.org>
Subject [jira] Commented: (SOLR-236) Field collapsing
Date Wed, 16 Feb 2011 16:10:26 GMT

    [ https://issues.apache.org/jira/browse/SOLR-236?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12995362#comment-12995362
] 

Doug Steigerwald commented on SOLR-236:
---------------------------------------

Has anyone successfully applied field collapsing to the branch_3x branch?

> 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: DocSetScoreCollector.java, NonAdjacentDocumentCollapser.java, NonAdjacentDocumentCollapserTest.java,
SOLR-236-1_4_1-NPEfix.patch, SOLR-236-1_4_1-paging-totals-working.patch, SOLR-236-1_4_1.patch,
SOLR-236-FieldCollapsing.patch, SOLR-236-FieldCollapsing.patch, SOLR-236-FieldCollapsing.patch,
SOLR-236-distinctFacet.patch, SOLR-236-trunk.patch, SOLR-236-trunk.patch, SOLR-236-trunk.patch,
SOLR-236-trunk.patch, SOLR-236-trunk.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, SOLR-236_collapsing.patch,
SOLR-236_collapsing.patch, collapsing-patch-to-1.3.0-dieter.patch, collapsing-patch-to-1.3.0-ivan.patch,
collapsing-patch-to-1.3.0-ivan_2.patch, collapsing-patch-to-1.3.0-ivan_3.patch, field-collapse-3.patch,
field-collapse-4-with-solrj.patch, field-collapse-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.patch,
field-collapse-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.patch, 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, quasidistributed.additional.patch,
solr-236.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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