DATACMNS-309 - Fixed lookup of nested properties on TypeDiscoverer.

So far the property lookup of a nested property path (e.g. "foo.bar") failed in cases the head property was not cached already. We now recursively resolve the type information even for an unpopulated cache.

src/main/java/org/springframework/data/util/TypeDiscoverer.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2011-2012 the original author or authors.
+ * Copyright 2011-2013 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.
@@ -177,7 +177,7 @@ class TypeDiscoverer<S> implements TypeInformation<S> {
 		}
 
 		String head = fieldname.substring(0, separatorIndex);
-		TypeInformation<?> info = fieldTypes.get(head);
+		TypeInformation<?> info = getProperty(head);
 		return info == null ? null : info.getProperty(fieldname.substring(separatorIndex + 1));
 	}