org.springframework.web.reactive.result.method.annotation.AbstractNamedValueSyncArgumentResolver Maven / Gradle / Ivy

/*
 * Copyright 2002-2018 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.reactive.result.method.annotation;

import reactor.core.publisher.Mono;

import org.springframework.beans.factory.config.ConfigurableBeanFactory;
import org.springframework.core.MethodParameter;
import org.springframework.core.ReactiveAdapterRegistry;
import org.springframework.lang.Nullable;
import org.springframework.web.reactive.BindingContext;
import org.springframework.web.reactive.result.method.SyncHandlerMethodArgumentResolver;
import org.springframework.web.server.ServerWebExchange;

/**
 * An extension of {@link AbstractNamedValueArgumentResolver} for named value
 * resolvers that are synchronous and yet non-blocking. Sub-classes implement
 * the synchronous {@link #resolveNamedValue} to which the asynchronous
 * {@link #resolveName} delegates to by default.
 *
 * @author Rossen Stoyanchev
 * @since 5.0
 */
public abstract class AbstractNamedValueSyncArgumentResolver extends AbstractNamedValueArgumentResolver
		implements SyncHandlerMethodArgumentResolver {

	/**
	 * @param factory a bean factory to use for resolving  ${...}
	 * placeholder and #{...} SpEL expressions in default values;
	 * or {@code null} if default values are not expected to have expressions
	 * @param registry for checking reactive type wrappers
	 */
	protected AbstractNamedValueSyncArgumentResolver(
			@Nullable ConfigurableBeanFactory factory, ReactiveAdapterRegistry registry) {

		super(factory, registry);
	}


	@Override
	public Mono