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https://issues.apache.org/jira/browse/SOLR-2368?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13218845#comment-13218845
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Hoss Man commented on SOLR-2368:
--------------------------------
bq. Are you saying it would be possible to define something like this in
solrconfig.xml
...something like that would certainly be possible if we changed the QParsers
to start doing interesting things with their init params (presumably defaults
there would be the lowest possible level defaults, overridden by things like
request handler defaults/invariants/appends ... and it would really make sense
to allow invariants/appends in the qparser init).
but that would only really help with the backcompat "locked down" dismax
situation i'm concerned with if we made sure all of those init params were also
used in the implicitly created instance of "dismax"
what i had in mind was actually far simpler...
* "dismax" is implicitly an instance of DismaxQParserPlugin (unless overridden
in solrconfig.xml) .. just like today
* "edismax" is implicitly an instance of ExtendedDismaxQParserPlugin (unless
overridden in solrconfig.xml) ... just like today
* ExtendedDismaxQParserPlugin works exactly as it does today but instead of all
the hardcoded default param values sprinkled around ExtendedDismaxQParser we
put them all in a static Map or SolrParams instance and add a constructor arg
to override those defaults
* DismaxQParserPlugin gets changed to look something like...
{code}
final static SolrParams REALLY_LIMITED_DEFAULTS = new SolrParams("uf", "-*",
...);
public QParser createParser(String qstr, SolrParams localParams, SolrParams
params, SolrQueryRequest req) {
return new ExtendedDisMaxQParser(qstr, localParams, params, req,
REALLY_LIMITED_DEFAULTS);
}
{code}
...using that new ExtendedDisMaxQParser constructor arg to override the
defaults * DisMaxQParser.java gets svn removed because it's no longer needed.
...all of which could then be enhanced with init based overrides of those
defaults like you suggested.
> Improve extended dismax (edismax) parser
> ----------------------------------------
>
> Key: SOLR-2368
> URL: https://issues.apache.org/jira/browse/SOLR-2368
> Project: Solr
> Issue Type: Improvement
> Components: search
> Reporter: Yonik Seeley
> Labels: QueryParser
>
> This is a "mother" issue to track further improvements for eDismax parser.
> The goal is to be able to deprecate and remove the old dismax once edismax
> satisfies all usecases of dismax.
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