improved per-field similarity integration into schema.xml
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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
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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