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https://issues.apache.org/jira/browse/SOLR-5536?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13916103#comment-13916103
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Peter Keegan commented on SOLR-5536:
------------------------------------
Hi Joel,
The patch worked fine with 4.6.1 after I removed the 'bad' lines (Eclipse patch
tool is rather fussy):
$ diff SOLR-5536.patch SOLR-5536-edited.patch
324,331d323
< \ No newline at end of file
<
< Property changes on:
solr/core/src/java/org/apache/solr/search/function/CollapseScoreFunction.java
< ___________________________________________________________________
< Added: svn:eol-style
< ## -0,0 +1 ##
< +native
< \ No newline at end of property
391,393c383
< //Test collapse by score with elevation
<
< params = new ModifiableSolrParams();
Thanks,
Peter
> Add ValueSource collapse criteria to CollapsingQParsingPlugin
> -------------------------------------------------------------
>
> Key: SOLR-5536
> URL: https://issues.apache.org/jira/browse/SOLR-5536
> Project: Solr
> Issue Type: Improvement
> Components: search
> Affects Versions: 4.6
> Reporter: Joel Bernstein
> Assignee: Joel Bernstein
> Priority: Minor
> Fix For: 4.7, 5.0
>
> Attachments: SOLR-5536-edited.patch, SOLR-5536.patch,
> SOLR-5536.patch, SOLR-5536.patch, SOLR-5536.patch
>
>
> It would be useful for the CollapsingQParserPlugin to support ValueSource
> collapse criteria.
> Proposed syntax:
> {code}
> fq={!collapse field=collapse_field max=value_source}
> {code}
> This ticket will also introduce a function query called "cscore", which will
> return the score of the current document being collapsed. This will allow
> score to be incorporated into collapse criteria functions.
> A simple example of the cscore usage:
> {code}
> fq={!collapse field=collapse_field max=sum(cscore(), field(x))}
> {code}
>
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