org.springframework.web.servlet.mvc.multiaction.MethodNameResolver Maven / Gradle / Ivy
/*
* Copyright 2002-2006 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.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.web.servlet.mvc.multiaction;
import javax.servlet.http.HttpServletRequest;
/**
* Interface that parameterizes the MultiActionController class
* using the Strategy GoF Design pattern, allowing
* the mapping from incoming request to handler method name
* to be varied without affecting other application code.
*
* Illustrates how delegation can be more flexible than subclassing.
*
* @author Rod Johnson
* @see MultiActionController#setMethodNameResolver
*/
public interface MethodNameResolver {
/**
* Return a method name that can handle this request. Such
* mappings are typically, but not necessarily, based on URL.
* @param request current HTTP request
* @return a method name that can handle this request.
* Never returns null; throws exception if not resolvable.
* @throws NoSuchRequestHandlingMethodException if no handler method
* can be found for the given request
*/
String getHandlerMethodName(HttpServletRequest request) throws NoSuchRequestHandlingMethodException;
}