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From "Martijn van Groningen (JIRA)" <j...@apache.org>
Subject [jira] Commented: (SOLR-236) Field collapsing
Date Fri, 13 Nov 2009 20:46:40 GMT

    [ https://issues.apache.org/jira/browse/SOLR-236?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12777649#action_12777649
] 

Martijn van Groningen commented on SOLR-236:
--------------------------------------------

Thomas, the method that cannot be found ( SolrIndexSearcher.getDocSet(...) ) is a method that
is part of the patch. So if the patch was successful applied then this should not happen.

When I released the latest patch I only tested against the solr trunk, but I have tried the
following to verify that the patch works with 1.4.0 release:
* Dowloaded 1.4.0 release from Solr site
* Applied the patch
* Executed: ant clean dist example
* In the example config (example/solr/conf/solrconfig.xml) I added the following line under
the standard request handler:
{code:xml}<searchComponent name="query" class="org.apache.solr.handler.component.CollapseComponent"
/>{code}
* Started the Jetty with Solr with the following command: java -jar start.jar
* Added example data to Solr with the following command in the exampledocs dir: ./post.sh
*.xml
* I Browsed to the following url: http://localhost:8983/solr/select/?q=*:*&collapse.field=inStock
and saw that the result was collapsed on the inStock field.

It seems that everything is running fine. Can you tell something about how you deployed Solr
on your machine?

> 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
>             Fix For: 1.5
>
>         Attachments: 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-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-FieldCollapsing.patch,
SOLR-236-FieldCollapsing.patch, SOLR-236-FieldCollapsing.patch, solr-236.patch, SOLR-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 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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