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https://issues.apache.org/jira/browse/SOLR-2564?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Martijn van Groningen updated SOLR-2564:
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Attachment: SOLR-2564.patch
Attached a new patch that should select the term based collectors now more
often:
* In the case of grouping by function and the value source is
StrFieldValueSource.
* All field types that produce a StrFieldValueSource (in getValueSource) use
now the term based collectors. So any custom field type can now also be
supported. Both TextField and StrField produce a StrFieldValueSource. I'm not
if this is the right approach, but it was the most easy way to implement.
> Integrating grouping module into Solr 4.0
> -----------------------------------------
>
> Key: SOLR-2564
> URL: https://issues.apache.org/jira/browse/SOLR-2564
> Project: Solr
> Issue Type: Improvement
> Reporter: Martijn van Groningen
> Assignee: Martijn van Groningen
> Fix For: 4.0
>
> Attachments: LUCENE-2564.patch, SOLR-2564.patch, SOLR-2564.patch,
> SOLR-2564.patch, SOLR-2564.patch, SOLR-2564.patch
>
>
> Since work on grouping module is going well. I think it is time to wire this
> up in Solr.
> Besides the current grouping features Solr provides, Solr will then also
> support second pass caching and total count based on groups.
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