dsmiley commented on a change in pull request #1123: LUCENE-9093: Unified
highlighter with word separator never gives context to the left
URL: https://github.com/apache/lucene-solr/pull/1123#discussion_r361828618
##########
File path:
lucene/highlighter/src/java/org/apache/lucene/search/uhighlight/LengthGoalBreakIterator.java
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@@ -173,8 +205,30 @@ private int moveToBreak(int idx) { // precondition: idx
is a known break
// called at start of new Passage given first word start offset
@Override
- public int preceding(int offset) {
- return baseIter.preceding(offset); // no change needed
+ public int preceding(int matchStartIndex) {
+ final int targetIdx = (matchStartIndex - 1) - (int)(lengthGoal *
fragmentAlignment);
+ if (targetIdx <= 0) {
+ return 0;
+ }
+ final int beforeIdx = baseIter.preceding(targetIdx + 1);
+ if (beforeIdx == DONE) {
+ return 0;
Review comment:
Returning beforeIdx (DONE) is perhaps more accurate/correct than 0? Or
maybe first()? Perhaps doesn't matter; this is perhaps theoretical.
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