From 76fcc81bc61342ed85f7a8a0c325e58162ff24e8 Mon Sep 17 00:00:00 2001
From: Andy Clement <aclement@vmware.com>
Date: Wed, 8 Apr 2009 04:47:54 +0000
Subject: [PATCH] New method to return string representation of typeDescriptor

---
 .../core/convert/TypeDescriptor.java          | 28 +++++++++++++++++++
 1 file changed, 28 insertions(+)

diff --git a/org.springframework.core/src/main/java/org/springframework/core/convert/TypeDescriptor.java b/org.springframework.core/src/main/java/org/springframework/core/convert/TypeDescriptor.java
index 0d686c3832..f01863014e 100644
--- a/org.springframework.core/src/main/java/org/springframework/core/convert/TypeDescriptor.java
+++ b/org.springframework.core/src/main/java/org/springframework/core/convert/TypeDescriptor.java
@@ -25,6 +25,7 @@ import org.springframework.core.GenericCollectionTypeResolver;
 import org.springframework.core.MethodParameter;
 import org.springframework.util.Assert;
 
+// TODO doesn't support more than depth of one (eg. Map<String,List<Foo>> or List<String>[])
 /**
  * Type metadata about a bindable target value.
  * 
@@ -269,6 +270,33 @@ public class TypeDescriptor {
 			return valueOf(object.getClass());
 		}
 	}
+	
+	/**
+	 * @return a textual representation of the type descriptor (eg. Map<String,Foo>) for use in messages
+	 */
+	public String asString() {
+		StringBuffer stringValue = new StringBuffer();
+		if (isArray()) {
+			// TODO should properly handle multi dimensional arrays
+			stringValue.append(getArrayComponentType().getName()).append("[]");
+		} else {
+			stringValue.append(getType().getName());
+			if (isCollection()) {
+				Class<?> collectionType = getCollectionElementType();
+				if (collectionType!=null) {
+					stringValue.append("<").append(collectionType.getName()).append(">");
+				}
+			} else if (isMap()) {
+				Class<?> keyType = getMapKeyType();
+				Class<?> valType = getMapValueType();
+				if (keyType!=null && valType!=null) {
+					stringValue.append("<").append(keyType.getName()).append(",");
+					stringValue.append(valType).append(">");
+				}
+			}
+		}
+		return stringValue.toString();
+	}
 
 
 	// internal helpers
-- 
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