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From "Pieter Berkel (JIRA)" <j...@apache.org>
Subject [jira] Commented: (SOLR-247) Allow facet.field=* to facet on all fields (without knowing what they are)
Date Fri, 24 Aug 2007 01:48:30 GMT

    [ https://issues.apache.org/jira/browse/SOLR-247?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12522345
] 

Pieter Berkel commented on SOLR-247:
------------------------------------

Some recent discussion on this topic:

http://www.nabble.com/Structured-Lucene-documents-tf4234661.html

I get the impression that general wildcard syntax support for field listing parameters (i.e.
the reverse of dynamic fields) as described in the above thread would be far more useful than
a simple '*' match-anything syntax (not only in faceting but other cases like hl.fl and perhaps
even mlt.fl).

I haven't really considered the performance issues of this approach however, as it would involve
checking each field supplied in the parameter for '*' before expanding it into full field
names for every query.

Given the above, the fact that it could be used across multiple response handlers and subhandlers
like SimpleFacets & Highlighting, and that it would require access to IndexReader to getFieldNames(),
where might be the most sensible place to put this code?


> Allow facet.field=* to facet on all fields (without knowing what they are)
> --------------------------------------------------------------------------
>
>                 Key: SOLR-247
>                 URL: https://issues.apache.org/jira/browse/SOLR-247
>             Project: Solr
>          Issue Type: Improvement
>            Reporter: Ryan McKinley
>            Priority: Minor
>         Attachments: SOLR-247-FacetAllFields.patch
>
>
> I don't know if this is a good idea to include -- it is potentially a bad idea to use
it, but that can be ok.
> This came out of trying to use faceting for the LukeRequestHandler top term collecting.
> http://www.nabble.com/Luke-request-handler-issue-tf3762155.html

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