David Smiley created SOLR-14164:
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Summary: Replace Solr's FunctionRangeQuery with Lucene's
Key: SOLR-14164
URL: https://issues.apache.org/jira/browse/SOLR-14164
Project: Solr
Issue Type: Improvement
Security Level: Public (Default Security Level. Issues are Public)
Reporter: David Smiley
Assignee: David Smiley
Solr has a FunctionRangeQuery. It is constant scoring and also a post-filter.
Lucene has a FunctionRangeQuery that I added years ago LUCENE-6919. It is not
constant scoring as it scores based on the wrapped ValueSource, although this
is easily made the same as Solr's by wrapping in a ConstantScoreQuery. And it
uses Lucene's TwoPhaseIterator indirectly which is equivalent functionality to
Solr's PostFilter. Consequently we can remove Solr's implementation.
Additionally, ValueSourceRangeFilter is a piece of the puzzle that can be
removed as Solr's FunctionQuery was a wrapper around this specifically. FYI
Once upon a time, Query and Filter were separate, then Filter was made to
subclass Query and then Filter was relegated to Solr as tech debt.
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