bruno-roustant commented on a change in pull request #797: LUCENE-8921:
IndexSearcher.termStatistics requires docFreq totalTermFreq instead of
TermStates
URL: https://github.com/apache/lucene-solr/pull/797#discussion_r307301256
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File path: lucene/core/src/java/org/apache/lucene/search/IndexSearcher.java
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@@ -861,17 +861,17 @@ public String toString() {
/**
* Returns {@link TermStatistics} for a term, or {@code null} if
- * the term does not exist.
+ * the term does not exist (if docFreq == 0).
*
* This can be overridden for example, to return a term's statistics
* across a distributed collection.
* @lucene.experimental
*/
- public TermStatistics termStatistics(Term term, TermStates context) throws
IOException {
- if (context.docFreq() == 0) {
+ public TermStatistics termStatistics(Term term, int docFreq, long
totalTermFreq) throws IOException {
+ if (docFreq == 0) {
Review comment:
Previously all callers checked if the returned TermStatistics was null
before doing something. So I replaced the null check by a check if docFreq is 0.
I tried to remove the 0 check and ran TestShardSearching (which extends
ShardSearchingTestBase I modified). It failed with the exception because
docFreq was 0.
I think this check is necessary, unless some specific class is sure docFreq
will always be > 0. It this case it would not previously check null.
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