dsmiley commented on a change in pull request #412:
URL: https://github.com/apache/lucene/pull/412#discussion_r739877069
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File path:
lucene/highlighter/src/java/org/apache/lucene/search/uhighlight/UnifiedHighlighter.java
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@@ -207,18 +342,22 @@ public void setFieldMatcher(Predicate<String> predicate) {
}
/**
- * Returns whether {@link MultiTermQuery} derivatives will be highlighted.
By default it's
- * enabled. MTQ highlighting can be expensive, particularly when using
offsets in postings.
+ * Returns the predicate to use for extracting the query part that must be
highlighted. By default
+ * only queries that target the current field are kept. (AKA
requireFieldMatch)
*/
+ protected Predicate<String> getFieldMatcher(String field) {
Review comment:
Ah; I see. So we can have the defaultFieldMatcher in the builder, at
least. Intentionally, many protected methods on UnifiedHighlighter take a
field argument because the choice can be field-dependent. It'd be too awkward
to support field-dependent settings in the builder, I think.
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