fixed getPropertyTypeDescriptor to work for nested indexed property as well as for array property (SPR-6710)

org.springframework.beans/src/main/java/org/springframework/beans/BeanWrapperImpl.java

@@ -355,7 +355,8 @@ public class BeanWrapperImpl extends AbstractPropertyAccessor implements BeanWra
 
 	public TypeDescriptor getPropertyTypeDescriptor(String propertyName) throws BeansException {
 		try {
-			PropertyDescriptor pd = getPropertyDescriptorInternal(propertyName);
+			String actualPropertyName = PropertyAccessorUtils.getPropertyName(propertyName);
+			PropertyDescriptor pd = getPropertyDescriptorInternal(actualPropertyName);
 			if (pd != null) {
 				Class type = getPropertyType(propertyName);
 				if (pd.getReadMethod() != null) {

org.springframework.beans/src/main/java/org/springframework/beans/PropertyAccessorUtils.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2008 the original author or authors.
+ * Copyright 2002-2010 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -32,7 +32,8 @@ public abstract class PropertyAccessorUtils {
 	 * @return the actual property name, without any key elements
 	 */
 	public static String getPropertyName(String propertyPath) {
-		int separatorIndex = propertyPath.indexOf(PropertyAccessor.PROPERTY_KEY_PREFIX_CHAR);
+		int separatorIndex = (propertyPath.endsWith(PropertyAccessor.PROPERTY_KEY_SUFFIX) ?
+				propertyPath.indexOf(PropertyAccessor.PROPERTY_KEY_PREFIX_CHAR) : -1);
 		return (separatorIndex != -1 ? propertyPath.substring(0, separatorIndex) : propertyPath);
 	}