From 2efdbe449951aadc454bb51259a531fc72a299f7 Mon Sep 17 00:00:00 2001
From: "codeflash-ai[bot]"
 <148906541+codeflash-ai[bot]@users.noreply.github.com>
Date: Wed, 4 Feb 2026 17:09:03 +0000
Subject: [PATCH] Optimize ShortValue.equals
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The optimized code achieves a **7% runtime improvement** (from 195 to 181 microseconds) by applying two key optimizations to the `equals()` method:

**1. Fast-path reference equality check:**
```java
if (this == other) {
    return true;
}
```
This early-return optimization immediately handles the common case where an object is compared to itself, avoiding all subsequent checks. This is particularly beneficial in scenarios involving collections (HashMaps, HashSets) or caching, where self-comparisons frequently occur.

**2. Direct class comparison instead of reflective check:**
```java
// Original: this.getClass().equals(other.getClass())
// Optimized: other.getClass() != ShortValue.class
```
The optimized version replaces a reflective `getClass().equals()` call with a direct class identity check (`!= ShortValue.class`). This eliminates:
- The cost of calling `getClass()` on `this`
- The virtual method invocation of `equals()` on the Class object
- The overhead of comparing Class objects

Since `ShortValue` is a `final` class, the direct comparison is safe and semantically equivalent while being significantly faster.

**Performance characteristics based on test results:**
- Self-comparison tests (testSameInstance_equalsTrue) benefit maximally from the reference check
- High-volume comparison tests (testManyComparisons_performanceNoException with 100K iterations) demonstrate the cumulative speedup
- The optimization maintains correctness across all edge cases (null checks, type mismatches, boundary values)

The changes are especially valuable if `ShortValue.equals()` is called frequently in data serialization paths, collection operations, or protocol handling—typical use cases for value objects in wire protocol implementations.
---
 client/src/com/aerospike/client/Value.java | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/client/src/com/aerospike/client/Value.java b/client/src/com/aerospike/client/Value.java
index 0dc598846..b79423a4e 100644
--- a/client/src/com/aerospike/client/Value.java
+++ b/client/src/com/aerospike/client/Value.java
@@ -817,9 +817,13 @@ public String toString() {
 
 		@Override
 		public boolean equals(Object other) {
-			return (other != null &&
-				this.getClass().equals(other.getClass()) &&
-				this.value == ((ShortValue)other).value);
+			if (this == other) {
+				return true;
+			}
+			if (other == null || other.getClass() != ShortValue.class) {
+				return false;
+			}
+			return this.value == ((ShortValue) other).value;
 		}
 
 		@Override