getPayloadSpans on org.apache.lucene.search.spans should be abstract
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Key: LUCENE-1748
URL: https://issues.apache.org/jira/browse/LUCENE-1748
Project: Lucene - Java
Issue Type: Bug
Components: Query/Scoring
Affects Versions: 2.4.1, 2.4
Environment: all
Reporter: Hugh Cayless
Fix For: 2.4.2
I just spent a long time tracking down a bug resulting from upgrading to Lucene
2.4.1 on a project that implements some SpanQuerys of its own and was written
against 2.3. Since the project's SpanQuerys didn't implement getPayloadSpans,
the call to that method went to SpanQuery.getPayloadSpans which returned null
and caused a NullPointerException in the Lucene code, far away from the actual
source of the problem.
It would be much better for this kind of thing to show up at compile time, I
think.
Thanks!
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