[jira] [Commented] (SOLR-2338) improved per-field similarity integration into schema.xml

["Fuad Efendi (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SOLR-2338?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13024811#comment-13024811 ] 

Fuad Efendi commented on SOLR-2338:
-----------------------------------

test-files/solr/conf/schema.xml contains sample of per-field definitions;
example/solr/schema.xml doesn't have it yet

> improved per-field similarity integration into schema.xml
> ---------------------------------------------------------
>
>                 Key: SOLR-2338
>                 URL: https://issues.apache.org/jira/browse/SOLR-2338
>             Project: Solr
>          Issue Type: Improvement
>          Components: Schema and Analysis
>    Affects Versions: 4.0
>            Reporter: Robert Muir
>            Assignee: Robert Muir
>             Fix For: 4.0
>
>         Attachments: SOLR-2338.patch, SOLR-2338.patch, SOLR-2338.patch
>
>
> Currently since LUCENE-2236, we can enable Similarity per-field, but in schema.xml there is only a 'global' factory
> for the SimilarityProvider.
> In my opinion this is too low-level because to customize Similarity on a per-field basis, you have to set your own
> CustomSimilarityProvider with <similarity class=.../> and manage the per-field mapping yourself in java code.
> Instead I think it would be better if you just specify the Similarity in the FieldType, like after <analyzer>.
> As far as the example, one idea from LUCENE-1360 was to make a "short_text" or "metadata_text" used by the
> various metadata fields in the example that has better norm quantization for its shortness...

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