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https://issues.apache.org/jira/browse/SOLR-9994?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15875390#comment-15875390
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David Smiley commented on SOLR-9994:
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At first I was confused what Points has to do with CollapseQParser since
collapsing should be on DocValues, not on an index (be it Terms or Points) but
now I understand that it's _still_ DocValues, it's just that the collapse
doesn't know about these new field types. I wonder if these features that need
to detect the DocValues type might be improved by introducing some method on
FieldType that returns the Int/Long/Float/Double interpretation of the numeric
DocValues, assuming the field even has numeric DocValues? The result would be
reducing instanceof checks (usually a good thing) which also allows for more
flexibility of user defined special numeric fields. Heck you could even
collapse on an enum field then.
> Add support for CollapseQParser with PointFields
> ------------------------------------------------
>
> Key: SOLR-9994
> URL: https://issues.apache.org/jira/browse/SOLR-9994
> Project: Solr
> Issue Type: Improvement
> Security Level: Public(Default Security Level. Issues are Public)
> Reporter: Tomás Fernández Löbbe
> Attachments: SOLR-9994.patch
>
>
> Followup task of SOLR-8396
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