#707 - Refactor Affordances to better support Spring Data REST.

* Move Spring MVC method scanning out of the core Affordances API and into SpringMvcAffordanceBuilder to make it easy to use in Spring Data REST (where method scanning isn't needed).
* Also push attributes from Affordance into AffordanceModel to centralize the details.
* Certain serializers must be registered differently due to Jackson's rules of precedence given Spring Data REST needs to override them.

src/main/java/org/springframework/hateoas/Link.java

@@ -30,6 +30,8 @@ import java.util.Map;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 
+import org.springframework.core.ResolvableType;
+import org.springframework.http.HttpMethod;
 import org.springframework.util.Assert;
 import org.springframework.util.StringUtils;
 
@@ -189,6 +191,48 @@ public class Link implements Serializable {
 		return withAffordances(newAffordances);
 	}
 
+	/**
+	 * Convenience method when chaining an existing {@link Link}.
+	 * 
+	 * @param name
+	 * @param httpMethod
+	 * @param inputType
+	 * @param queryMethodParameters
+	 * @param outputType
+	 * @return
+	 */
+	public Link andAffordance(String name, HttpMethod httpMethod, ResolvableType inputType, List<QueryParameter> queryMethodParameters, ResolvableType outputType) {
+		return andAffordance(new Affordance(name, this, httpMethod, inputType, queryMethodParameters, outputType));
+	}
+
+	/**
+	 * Convenience method when chaining an existing {@link Link}. Defaults the name of the affordance to verb + classname, e.g.
+	 * {@literal <httpMethod=HttpMethod.PUT, inputType=Employee>} produces {@literal <name=putEmployee>}.
+	 *
+	 * @param httpMethod
+	 * @param inputType
+	 * @param queryMethodParameters
+	 * @param outputType
+	 * @return
+	 */
+	public Link andAffordance(HttpMethod httpMethod, ResolvableType inputType, List<QueryParameter> queryMethodParameters, ResolvableType outputType) {
+		return andAffordance(httpMethod.toString().toLowerCase() + inputType.resolve().getSimpleName(), httpMethod, inputType, queryMethodParameters, outputType);
+	}
+
+	/**
+	 * Convenience method when chaining an existing {@link Link}. Defaults the name of the affordance to verb + classname, e.g.
+	 * {@literal <httpMethod=HttpMethod.PUT, inputType=Employee>} produces {@literal <name=putEmployee>}.
+	 *
+	 * @param httpMethod
+	 * @param inputType
+	 * @param queryMethodParameters
+	 * @param outputType
+	 * @return
+	 */
+	public Link andAffordance(HttpMethod httpMethod, Class<?> inputType, List<QueryParameter> queryMethodParameters, Class<?> outputType) {
+		return andAffordance(httpMethod, ResolvableType.forClass(inputType), queryMethodParameters, ResolvableType.forClass(outputType));
+	}
+
 	/**
 	 * Create new {@link Link} with additional {@link Affordance}s.
 	 *