From 5068eb2e01a5f534b6ceaefe9d1034446b674164 Mon Sep 17 00:00:00 2001
From: Rossen Stoyanchev <rstoyanchev@gopivotal.com>
Date: Mon, 13 Jan 2014 14:05:25 -0500
Subject: [PATCH] Add minor optimization to AbstractErrors

Issue: SPR-11304
---
 .../org/springframework/validation/AbstractErrors.java    | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/spring-context/src/main/java/org/springframework/validation/AbstractErrors.java b/spring-context/src/main/java/org/springframework/validation/AbstractErrors.java
index 18c566644c..46a2ffc08d 100644
--- a/spring-context/src/main/java/org/springframework/validation/AbstractErrors.java
+++ b/spring-context/src/main/java/org/springframework/validation/AbstractErrors.java
@@ -227,8 +227,12 @@ public abstract class AbstractErrors implements Errors, Serializable {
 	 * @return whether the FieldError matches the given field
 	 */
 	protected boolean isMatchingFieldError(String field, FieldError fieldError) {
-		return (field.equals(fieldError.getField()) ||
-				(field.endsWith("*") && fieldError.getField().startsWith(field.substring(0, field.length() - 1))));
+		if (field.equals(fieldError.getField())) {
+			return true;
+		}
+		// Optimization: use chatAt instead of endsWith (SPR-11304, VESC-165)
+		int endIndex = field.length() - 1;
+		return (field.charAt(endIndex) == '*' && fieldError.getField().startsWith(field.substring(0, endIndex)));
 	}