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https://issues.apache.org/jira/browse/SOLR-236?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Doug Steigerwald updated SOLR-236:
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Attachment: field_collapsing_dsteigerwald.diff
I've created a CollapseComponent for field collapsing. Everything seems to
work fine with it. Only issue I'm having is I cannot use the query component
because when it isn't commented out, the non-field collapsed results are
displayed and I can't figure out how to remove them. Someone might be able to
figure that part out.
http://localhost:8983/solr/search?q=id:[0%20TO%20*]&collapse=true&collapse.field=inStock&collapse.type=normal&collapse.threshold=0
Here's the config I'm using:
<searchComponent name="collapse"
class="org.apache.solr.handler.component.CollapseComponent" />
<requestHandler name="/search" class="solr.SearchHandler">
<lst name="defaults">
<str name="echoParams">explicit</str>
</lst>
<arr name="components">
<!-- <str>query</str> -->
<str>facet</str>
<!-- <str>mlt</str> -->
<!-- <str>highlight</str> -->
<!-- <str>debug</str> -->
<str>collapse</str>
</arr>
</requestHandler>
> 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-extended-592129.patch,
> field_collapsing_1.1.0.patch, field_collapsing_1.3.patch,
> field_collapsing_dsteigerwald.diff, 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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