Allow edismax stopword filter factory implementation to be specified
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Key: SOLR-3017
URL: https://issues.apache.org/jira/browse/SOLR-3017
Project: Solr
Issue Type: Improvement
Reporter: Michael Dodsworth
Priority: Minor
Fix For: 4.0
Currently, the edismax query parser assumes that stopword filtering is being
done by StopFilter: the removal of the stop filter is performed by looking for
an instance of 'StopFilterFactory' (hard-coded) within the associated field's
analysis chain.
We'd like to be able to use our own stop filters whilst keeping the edismax
stopword removal goodness. The supplied patch allows the stopword filter
factory class to be supplied as a param, "stopwordFilterClassName". If no value
is given, the default (StopFilterFactory) is used.
Another option I looked into was to extend StopFilterFactory to create our own
filter. Unfortunately, StopFilterFactory's 'create' method returns StopFilter,
not TokenStream. StopFilter is also final.
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