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From "Alan Woodward (JIRA)" <>
Subject [jira] [Created] (LUCENE-6473) Make Spans an interface
Date Sat, 09 May 2015 21:17:59 GMT
Alan Woodward created LUCENE-6473:

             Summary: Make Spans an interface
                 Key: LUCENE-6473
             Project: Lucene - Core
          Issue Type: Improvement
            Reporter: Alan Woodward

Spans is currently an abstract class, extending DocIdSetIterator.  This restricts what we
can do with implementations of Spans.  For example, in LUCENE-6371, it would be useful to
have PayloadSpan classes that extend existing Spans implementations, but that also implement
a PayloadSpans interface that extends Spans.  This isn't possible if Spans is not an interface

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