From ce81e3ddeaf4f9ac4f13be22ad2d190fc29f5582 Mon Sep 17 00:00:00 2001
From: bowenlan-amzn <bowenlan23@gmail.com>
Date: Tue, 16 Jan 2024 16:17:33 -0800
Subject: [PATCH] address comments

Signed-off-by: bowenlan-amzn <bowenlan23@gmail.com>
---
 .../search/aggregations/bucket/FastFilterRewriteHelper.java | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/server/src/main/java/org/opensearch/search/aggregations/bucket/FastFilterRewriteHelper.java b/server/src/main/java/org/opensearch/search/aggregations/bucket/FastFilterRewriteHelper.java
index 34a28fd04d1a3..f377287d0b3bd 100644
--- a/server/src/main/java/org/opensearch/search/aggregations/bucket/FastFilterRewriteHelper.java
+++ b/server/src/main/java/org/opensearch/search/aggregations/bucket/FastFilterRewriteHelper.java
@@ -40,7 +40,7 @@
 import java.util.function.Supplier;
 
 /**
- * Help rewrite aggregations into filters.
+ * Utility class to help rewrite aggregations into filters.
  * Instead of aggregation collects documents one by one, filter may count all documents that match in one pass.
  * <p>
  * Currently supported rewrite:
@@ -51,7 +51,9 @@
  *
  * @opensearch.internal
  */
-public class FastFilterRewriteHelper {
+public final class FastFilterRewriteHelper {
+
+    private FastFilterRewriteHelper() {}
 
     private static final int MAX_NUM_FILTER_BUCKETS = 1024;
     private static final Map<Class<?>, Function<Query, Query>> queryWrappers;