spring-graphql WebGraphQlResponse 源码
spring-graphql WebGraphQlResponse 代码
文件路径：/spring-graphql/src/main/java/org/springframework/graphql/server/WebGraphQlResponse.java
/*
* Copyright 2020-2022 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.server;
import java.util.function.Consumer;
import graphql.ExecutionResult;
import org.springframework.graphql.ExecutionGraphQlResponse;
import org.springframework.graphql.support.DefaultExecutionGraphQlResponse;
import org.springframework.http.HttpHeaders;
/**
* {@link org.springframework.graphql.GraphQlResponse} implementation for server
* handling over HTTP or over WebSocket.
*
* @author Rossen Stoyanchev
* @since 1.0.0
*/
public class WebGraphQlResponse extends DefaultExecutionGraphQlResponse {
private final HttpHeaders responseHeaders;
/**
* Create an instance that wraps the given {@link ExecutionGraphQlResponse}.
* @param response the response to wrap
*/
public WebGraphQlResponse(ExecutionGraphQlResponse response) {
super(response);
this.responseHeaders = new HttpHeaders();
}
private WebGraphQlResponse(WebGraphQlResponse original, ExecutionResult executionResult) {
super(original.getExecutionInput(), executionResult);
this.responseHeaders = original.getResponseHeaders();
}
/**
* Return the headers to be added to the HTTP response.
* <p>By default, this is empty.
* <p><strong>Note:</strong> This is for use with GraphQL over HTTP requests
* but not for GraphQL over WebSocket where the initial handshake HTTP
* request completes before queries begin.
*/
public HttpHeaders getResponseHeaders() {
return this.responseHeaders;
}
/**
* Transform the underlying {@link ExecutionResult} through a {@link Builder}
* and return a new instance with the modified values.
* @param consumer callback to transform the result
* @return the new response instance with the mutated {@code ExecutionResult}
*/
public WebGraphQlResponse transform(Consumer<Builder> consumer) {
Builder builder = new Builder(this);
consumer.accept(builder);
return builder.build();
}
/**
* Builder to transform a {@link WebGraphQlResponse}.
*/
public static final class Builder extends DefaultExecutionGraphQlResponse.Builder<Builder, WebGraphQlResponse> {
private Builder(WebGraphQlResponse original) {
super(original);
}
@Override
protected WebGraphQlResponse build(WebGraphQlResponse original, ExecutionResult newResult) {
return new WebGraphQlResponse(original, newResult);
}
}
}
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