gortiz commented on code in PR #11729:
URL: https://github.com/apache/pinot/pull/11729#discussion_r1348534266
##########
pinot-segment-spi/src/main/java/org/apache/pinot/segment/spi/index/reader/ForwardIndexReader.java:
##########
@@ -916,4 +916,83 @@ default byte[][] getBytesMV(int docId, T context) {
default int getNumValuesMV(int docId, T context) {
throw new UnsupportedOperationException();
}
+
+ class ValueRange {
+ private final long _offset;
+ private final int _size;
+ // To tell if size uses bit or byte as unit, for fwd index reader reading
values of fixed bits.
+ private final boolean _isSizeOfBit;
+
+ public static ValueRange newByteRange(long offset, int sizeInBytes) {
+ return new ValueRange(offset, sizeInBytes, false);
+ }
+
+ public static ValueRange newBitRange(long offset, int sizeInBits) {
+ return new ValueRange(offset, sizeInBits, true);
+ }
+
+ private ValueRange(long offset, int size, boolean isSizeOfBit) {
+ _offset = offset;
+ _size = size;
+ _isSizeOfBit = isSizeOfBit;
+ }
+
+ public long getOffset() {
+ return _offset;
+ }
+
+ public int getSize() {
+ return _size;
+ }
+
+ public boolean isSizeOfBit() {
+ return _isSizeOfBit;
+ }
+
+ @Override
+ public String toString() {
+ return "Range{" + "_offset=" + _offset + ", _size=" + _size + ",
_isSizeOfBit=" + _isSizeOfBit + '}';
+ }
+ }
+
+ /**
+ * An interface that enables the caller to get byte ranges accessed while
reading a given docId.
+ * This can be used to eventually allow prefetching of exact byte ranges
during query processing,
+ * if the docIds to be fetched are known beforehand.
+ *
+ * This interface will be implemented by all the forward index readers.
+ */
+ interface ValueRangeProvider<T extends ForwardIndexReaderContext> {
Review Comment:
It makes sense. Consider it resolved
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