itschrispeck commented on code in PR #11739:
URL: https://github.com/apache/pinot/pull/11739#discussion_r1356140349
##########
pinot-segment-local/src/main/java/org/apache/pinot/segment/local/segment/index/readers/json/ImmutableJsonIndexReader.java:
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@@ -300,6 +305,92 @@ private int getDocId(int flattenedDocId) {
return _docIdMapping.getInt((long) flattenedDocId << 2);
}
+ /**
+ * ImmutableJsonIndexReaderContext holds a cache that is used to accelerate
following reads. The cache is specific
+ * to a key, and therefore should NOT be reused for other keys. For each
key, ImmutableJsonIndexReader.createContext()
+ * should be invoked to create a fresh context.
+ */
+ public static class ImmutableJsonIndexReaderContext implements
JsonIndexReaderContext {
+ private final Int2ObjectOpenHashMap<RoaringBitmap> _cache;
+
+ public ImmutableJsonIndexReaderContext() {
+ _cache = new Int2ObjectOpenHashMap<>();
+ }
+
+ public Int2ObjectOpenHashMap<RoaringBitmap> getCache() {
+ return _cache;
+ }
+ }
+
+ @Override
+ public ImmutableJsonIndexReaderContext createContext() {
+ return new ImmutableJsonIndexReaderContext();
+ }
+
+ @Override
+ public String[] getValuesForKeyAndDocs(String key, int[] docIds,
JsonIndexReaderContext context) {
Review Comment:
I think `key` is widely used in the code and this file to refer to a json
key. I would prefer to maintain existing terminology
jsonPath is generally used for `JsonPath` types from what I see.
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