From 452f7537258a74225525bcd99b1bae7d7e0cb4de Mon Sep 17 00:00:00 2001
From: Naveen Vardhi <rozuur@users.noreply.github.com>
Date: Mon, 17 Sep 2018 20:11:59 +0530
Subject: [PATCH] Corrected equals method

Fixes the comparison of an extended class of QueryValueSource
---
 .../queries/function/valuesource/QueryValueSource.java       | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/lucene/queries/src/java/org/apache/lucene/queries/function/valuesource/QueryValueSource.java b/lucene/queries/src/java/org/apache/lucene/queries/function/valuesource/QueryValueSource.java
index e535b55018f4..1e67e87d802d 100644
--- a/lucene/queries/src/java/org/apache/lucene/queries/function/valuesource/QueryValueSource.java
+++ b/lucene/queries/src/java/org/apache/lucene/queries/function/valuesource/QueryValueSource.java
@@ -65,7 +65,8 @@ public int hashCode() {
 
   @Override
   public boolean equals(Object o) {
-    if (QueryValueSource.class != o.getClass()) return false;
+    if (o == null) return false;
+    if (getClass() != o.getClass()) return false;
     QueryValueSource other = (QueryValueSource)o;
     return this.q.equals(other.q) && this.defVal==other.defVal;
   }
@@ -254,4 +255,4 @@ public void fillValue(int doc) {
   public String toString(int doc) {
     return "query(" + q + ",def=" + defVal + ")=" + floatVal(doc);
   }
-}
\ No newline at end of file
+}