/*
 * Copyright 2016-2020 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
 *
 *      https://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.data.web;

import javax.annotation.Nonnull;
import javax.annotation.Nullable;

import org.springframework.core.MethodParameter;
import org.springframework.data.domain.Sort;
import org.springframework.web.bind.WebDataBinder;
import org.springframework.web.bind.support.WebDataBinderFactory;
import org.springframework.web.context.request.NativeWebRequest;
import org.springframework.web.method.support.HandlerMethodArgumentResolver;
import org.springframework.web.method.support.ModelAndViewContainer;

Argument resolver to extract a Sort object from a NativeWebRequest for a particular MethodParameter. A SortArgumentResolver can either resolve Sort itself or wrap another SortArgumentResolver to post-process Sort. Sort resolution yields either in a Sort object or null if Sort cannot be resolved. 
Author:
Mark Paluch
See Also:
HandlerMethodArgumentResolver
Since:
1.13/**
 * Argument resolver to extract a {@link Sort} object from a {@link NativeWebRequest} for a particular
 * {@link MethodParameter}. A {@link SortArgumentResolver} can either resolve {@link Sort} itself or wrap another
 * {@link SortArgumentResolver} to post-process {@link Sort}. {@link Sort} resolution yields either in a {@link Sort}
 * object or {@literal null} if {@link Sort} cannot be resolved.
 *
 * @author Mark Paluch
 * @since 1.13
 * @see org.springframework.web.method.support.HandlerMethodArgumentResolver
 */
public interface SortArgumentResolver extends HandlerMethodArgumentResolver {

	
Resolves a Sort method parameter into an argument value from a given request. 
Params:
parameter – the method parameter to resolve. This parameter must have previously been passed to HandlerMethodArgumentResolver.supportsParameter which must have returned true.
mavContainer – the ModelAndViewContainer for the current request
webRequest – the current request
binderFactory – a factory for creating WebDataBinder instances
Returns:
the resolved argument value, or null/**
	 * Resolves a {@link Sort} method parameter into an argument value from a given request.
	 *
	 * @param parameter the method parameter to resolve. This parameter must have previously been passed to
	 *          {@link #supportsParameter} which must have returned {@code true}.
	 * @param mavContainer the ModelAndViewContainer for the current request
	 * @param webRequest the current request
	 * @param binderFactory a factory for creating {@link WebDataBinder} instances
	 * @return the resolved argument value, or {@code null}
	 */
	@Nonnull
	@Override
	Sort resolveArgument(MethodParameter parameter, @Nullable ModelAndViewContainer mavContainer,
			NativeWebRequest webRequest, @Nullable WebDataBinderFactory binderFactory);
}