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_r361483326
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File path:
lucene/highlighter/src/java/org/apache/lucene/search/uhighlight/LengthGoalBreakIterator.java
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@@ -174,7 +175,48 @@ 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
+ final int fragmentStart = Math.max(baseIter.preceding(offset), 0); //
convert DONE to 0
+ fragmentEndFromPreceding = baseIter.following(fragmentStart);
+ if (fragmentEndFromPreceding == DONE) {
+ fragmentEndFromPreceding = baseIter.last();
+ }
+ final int centerLength = fragmentEndFromPreceding - fragmentStart;
Review comment:
All this is inherently confusing so lets add a bit more comments or
reconsider some variable names. It would help me understand "centerLength"
with a comment above saying something like "centerLength is the length of the
center-most segment.". Or maybe "span" and not segment; too bad there isn't a
clear word for these. Could be a sentence, word, or something else; its
whatever the BI is breaking.
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