From 36c096858dba391bae00e2eb88c284d388b8aaca Mon Sep 17 00:00:00 2001
From: Ben Alex <ben.alex@springsource.com>
Date: Wed, 26 Apr 2006 01:31:17 +0000
Subject: [PATCH] SEC-223: Improve hashCode() performance.

---
 .../providers/AbstractAuthenticationToken.java         | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/core/src/main/java/org/acegisecurity/providers/AbstractAuthenticationToken.java b/core/src/main/java/org/acegisecurity/providers/AbstractAuthenticationToken.java
index c18cef2f0a..fb5c687f55 100644
--- a/core/src/main/java/org/acegisecurity/providers/AbstractAuthenticationToken.java
+++ b/core/src/main/java/org/acegisecurity/providers/AbstractAuthenticationToken.java
@@ -146,10 +146,12 @@ public abstract class AbstractAuthenticationToken implements Authentication {
 
     public int hashCode() {
         int code = 31;
-
-        if (this.getAuthorities() != null) {
-            for (int i = 0; i < this.getAuthorities().length; i++) {
-                code ^= this.getAuthorities()[i].hashCode();         
+        
+        // Copy authorities to local variable for performance (SEC-223)
+        GrantedAuthority[] authorities = this.getAuthorities();
+        if (authorities != null) {
+            for (int i = 0; i < authorities.length; i++) {
+                code ^= authorities[i].hashCode();         
             }
         }