LuXugang commented on code in PR #12405:
URL: https://github.com/apache/lucene/pull/12405#discussion_r1270201963
##########
lucene/core/src/java/org/apache/lucene/search/comparators/NumericComparator.java:
##########
@@ -309,38 +322,109 @@ private void updateSkipInterval(boolean success) {
}
}
- @Override
- public DocIdSetIterator competitiveIterator() {
- if (enableSkipping == false) return null;
- return new DocIdSetIterator() {
- private int docID = competitiveIterator.docID();
-
- @Override
- public int nextDoc() throws IOException {
- return advance(docID + 1);
+ /**
+ * If {@link NumericComparator#pruning} equals {@link
Pruning#GREATER_THAN_OR_EQUAL_TO}, we
+ * could better tune the {@link
NumericLeafComparator#maxValueAsBytes}/{@link
+ * NumericLeafComparator#minValueAsBytes}. For instance, if the sort is
ascending and bottom
+ * value is 5, we will use a range on [MIN_VALUE, 4].
+ */
+ private void encodeBottom() {
+ if (pruning == Pruning.GREATER_THAN_OR_EQUAL_TO && isBottomMinOrMax() ==
false) {
Review Comment:
> only subtract deltaOne if bottom is not full of zeroes
only add deltaOne if bottom is not full of 0xff
It seems only work for `int` and `long`:
```java
float maxFloat = Float.MAX_VALUE;
float minFloat = Float.MIN_VALUE;
byte[] maxFloatByte = new byte[Float.BYTES];
byte[] minFloatByte = new byte[Float.BYTES];
FloatPoint.encodeDimension(maxFloat, maxFloatByte, 0);
FloatPoint.encodeDimension(minFloat, minFloatByte, 0);
```
result was maxFloatByte: [-1, 127, -1, -1] and minFloat: [-128, 0, 0, 1]
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