spring-graphql ArgumentMapMethodArgumentResolver 源码
spring-graphql ArgumentMapMethodArgumentResolver 代码
文件路径：/spring-graphql/src/main/java/org/springframework/graphql/data/method/annotation/support/ArgumentMapMethodArgumentResolver.java
/*
* Copyright 2002-2022 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.graphql.data.method.annotation.support;
import java.util.Map;
import graphql.schema.DataFetchingEnvironment;
import org.springframework.core.MethodParameter;
import org.springframework.graphql.data.method.HandlerMethodArgumentResolver;
import org.springframework.graphql.data.method.annotation.Argument;
import org.springframework.util.StringUtils;
/**
* Resolves a {@link Map} method parameter annotated with an
* {@link Argument @Argument} by returning the GraphQL
* {@link DataFetchingEnvironment#getArguments() arguments} map.
*
* @author Rossen Stoyanchev
* @since 1.0.0
*/
public class ArgumentMapMethodArgumentResolver implements HandlerMethodArgumentResolver {
@Override
public boolean supportsParameter(MethodParameter parameter) {
Argument argument = parameter.getParameterAnnotation(Argument.class);
return (argument != null &&
Map.class.isAssignableFrom(parameter.getParameterType()) &&
!StringUtils.hasText(argument.name()));
}
@Override
public Object resolveArgument(MethodParameter parameter, DataFetchingEnvironment environment) {
return environment.getArguments();
}
}
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