spring-graphql SchemaMapping 源码
spring-graphql SchemaMapping 代码
文件路径：/spring-graphql/src/main/java/org/springframework/graphql/data/method/annotation/SchemaMapping.java
/*
* Copyright 2002-2021 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;
import java.lang.annotation.Documented;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
import graphql.schema.DataFetchingEnvironment;
import org.springframework.core.annotation.AliasFor;
/**
* Annotation to express the mapping of a handler method to a GraphQL type and
* field pair.
*
* <p>You can use this annotation both at the method and at the class level, in
* which case all handlers methods inherit the class-level typeName by default
* unless overridden at the method level.
*
* @author Rossen Stoyanchev
* @since 1.0.0
*/
@Target({ElementType.TYPE, ElementType.METHOD})
@Retention(RetentionPolicy.RUNTIME)
@Documented
public @interface SchemaMapping {
/**
* Customize the name of the GraphQL field to bind to.
* <p>By default, if not specified, this is initialized from the method name.
*/
@AliasFor("value")
String field() default "";
/**
* Effectively an alias for {@link #field()}.
*/
@AliasFor("field")
String value() default "";
/**
* Customizes the name of the source/parent type for the GraphQL field.
* <p>By default, if not specified, it is derived from the class name of a
* {@link DataFetchingEnvironment#getSource() source} argument injected into
* the handler method.
* <p>This attributed is supported at the class level and at the method level!
* When used on both levels, the one on the method level overrides the one
* at the class level.
*/
String typeName() default "";
}
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