org.springframework.web.service.annotation.HttpExchangeReflectiveProcessor Maven / Gradle / Ivy
/*
* 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.web.service.annotation;
import java.lang.reflect.AnnotatedElement;
import java.lang.reflect.Method;
import java.lang.reflect.Parameter;
import org.springframework.aot.hint.BindingReflectionHintsRegistrar;
import org.springframework.aot.hint.ExecutableMode;
import org.springframework.aot.hint.ReflectionHints;
import org.springframework.aot.hint.annotation.ReflectiveProcessor;
import org.springframework.core.MethodParameter;
import org.springframework.web.bind.annotation.RequestBody;
/**
* {@link ReflectiveProcessor} implementation for {@link HttpExchange @HttpExchange}
* annotated methods. In addition to registering reflection hints for invoking
* the annotated method, this implementation handles reflection-based
* binding for return types and parameters annotated with {@link RequestBody}.
*
* @author Sebastien Deleuze
* @since 6.0
*/
class HttpExchangeReflectiveProcessor implements ReflectiveProcessor {
private final BindingReflectionHintsRegistrar bindingRegistrar = new BindingReflectionHintsRegistrar();
@Override
public void registerReflectionHints(ReflectionHints hints, AnnotatedElement element) {
if (element instanceof Method method) {
registerMethodHints(hints, method);
}
}
protected void registerMethodHints(ReflectionHints hints, Method method) {
hints.registerMethod(method, ExecutableMode.INVOKE);
for (Parameter parameter : method.getParameters()) {
registerParameterTypeHints(hints, MethodParameter.forParameter(parameter));
}
registerReturnTypeHints(hints, MethodParameter.forExecutable(method, -1));
}
protected void registerParameterTypeHints(ReflectionHints hints, MethodParameter methodParameter) {
if (methodParameter.hasParameterAnnotation(RequestBody.class)) {
this.bindingRegistrar.registerReflectionHints(hints, methodParameter.getGenericParameterType());
}
}
protected void registerReturnTypeHints(ReflectionHints hints, MethodParameter returnTypeParameter) {
if (!void.class.equals(returnTypeParameter.getParameterType())) {
this.bindingRegistrar.registerReflectionHints(hints, returnTypeParameter.getGenericParameterType());
}
}
}