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https://issues.apache.org/jira/browse/SOLR-236?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12538302
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Tracy Flynn commented on SOLR-236:
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Hi,
I am new to Solr, and this thread in particular, so please excuse any questions
that seem obvious.
I am investigating converting an existing FAST installation to Solr. I've been
able to see how to convert all my queries to Solr/Lucene with little or no
trouble, with the exception of field collapsing. I've actually implemented a
demo of our main search with a Ruby/Rails front end in a few hours. Nice work
everyone!
I have found this thread, looked at the patch for field collapsing and have a
couple of questions.
I've looked at the Subversion tree and
- Don't find a 1.3 branch
- Don't find the patch code in the trunk
Is there a 'private' sandbox Solr developers work in that's not visible to the
pubic (i.e. me)?
If not, what revision of the trunk does the patch apply to?
Any help would be appreciated. If I can get a demo that includes field
collapsing, my management may be persuaded to let me move our main search to
Solr.
Regards,
Tracy
> 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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