Scorer.explain is deprecated but abstract, should have impl that throws
UnsupportedOperationException
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Key: LUCENE-1839
URL: https://issues.apache.org/jira/browse/LUCENE-1839
Project: Lucene - Java
Issue Type: Improvement
Components: Search
Reporter: Tim Smith
Priority: Minor
Fix For: 2.9
Suggest having Scorer implement explain to throw UnsupportedOperationException
right now, i have to implement this method (because its abstract), and javac
yells at me for overriding a deprecated method
if the following implementation is in Scorer, i can remove my "empty"
implementations of explain from my Scorers
{code}
/** Returns an explanation of the score for a document.
* <br>When this method is used, the {...@link #next()}, {...@link
#skipTo(int)} and
* {...@link #score(HitCollector)} methods should not be used.
* @param doc The document number for the explanation.
*
* @deprecated Please use {...@link IndexSearcher#explain}
* or {...@link Weight#explain} instead.
*/
public Explanation explain(int doc) throws IOException {
throw new UnsupportedOperationException();
}
{code}
best i figure, this shouldn't break back compat (people already have to
recompile anyway) (2.9 definitely not binary compatible with 2.4)
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