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/*
* Copyright 2002-2024 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;
/**
* A {@code MethodExecutor} is built by a {@link MethodResolver} and can be cached
* by the infrastructure to repeat an operation quickly without going back to the
* resolvers.
*
* For example, the particular method to execute on an object may be discovered
* by a {@code MethodResolver} which then builds a {@code MethodExecutor} that
* executes that method, and the resolved {@code MethodExecutor} can be reused
* without needing to go back to the resolvers to discover the method again.
*
*
If a {@code MethodExecutor} becomes stale, it should throw an
* {@link AccessException} which signals to the infrastructure to go back to the
* resolvers to ask for a new one.
*
* @author Andy Clement
* @author Sam Brannen
* @since 3.0
* @see MethodResolver
* @see ConstructorExecutor
*/
@FunctionalInterface
public interface MethodExecutor {
/**
* Execute a method in the specified context using the specified arguments.
* @param context the evaluation context in which the method is being executed
* @param target the target of the method invocation; may be {@code null} for
* {@code static} methods
* @param arguments the arguments to the method; should match (in terms of
* number and type) whatever the method will need to run
* @return the value returned from the method
* @throws AccessException if there is a problem executing the method or
* if this {@code MethodExecutor} has become stale
*/
TypedValue execute(EvaluationContext context, Object target, Object... arguments) throws AccessException;
}