/*
* Copyright 2002-2010 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
*
* http://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;
/**
* A method resolver attempts 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 MethodExecutor that can be used to invoke that method
* (or <code>null</code> 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
*/
MethodExecutor resolve(EvaluationContext context, Object targetObject, String name,
List<TypeDescriptor> argumentTypes) throws AccessException;
}
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