spring MethodResolver 源码
spring MethodResolver 代码
文件路径：/spring-expression/src/main/java/org/springframework/expression/MethodResolver.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.expression;
import java.util.List;
import org.springframework.core.convert.TypeDescriptor;
import org.springframework.lang.Nullable;
/**
* A method resolver attempts to locate a method and returns a command executor that can be
* used to invoke that method. The command executor will be cached, but if it 'goes stale'
* the resolvers will be called again.
*
* @author Andy Clement
* @since 3.0
*/
public interface MethodResolver {
/**
* Within the supplied context determine a suitable method on the supplied object that
* can handle the specified arguments. Return a {@link MethodExecutor} that can be used
* to invoke that method, or {@code null} if no method could be found.
* @param context the current evaluation context
* @param targetObject the object upon which the method is being called
* @param argumentTypes the arguments that the constructor must be able to handle
* @return a MethodExecutor that can invoke the method, or null if the method cannot be found
*/
@Nullable
MethodExecutor resolve(EvaluationContext context, Object targetObject, String name,
List<TypeDescriptor> argumentTypes) throws AccessException;
}
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