spring ConstructorResolver 源码
spring ConstructorResolver 代码
文件路径：/spring-expression/src/main/java/org/springframework/expression/ConstructorResolver.java
/*
* Copyright 2002-2016 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 constructor resolver attempts to locate a constructor and returns a ConstructorExecutor
* that can be used to invoke that constructor. The ConstructorExecutor will be cached but
* if it 'goes stale' the resolvers will be called again.
*
* @author Andy Clement
* @since 3.0
*/
@FunctionalInterface
public interface ConstructorResolver {
/**
* Within the supplied context determine a suitable constructor on the supplied type
* that can handle the specified arguments. Return a ConstructorExecutor that can be
* used to invoke that constructor (or {@code null} if no constructor could be found).
* @param context the current evaluation context
* @param typeName the type upon which to look for the constructor
* @param argumentTypes the arguments that the constructor must be able to handle
* @return a ConstructorExecutor that can invoke the constructor, or null if non found
*/
@Nullable
ConstructorExecutor resolve(EvaluationContext context, String typeName, List<TypeDescriptor> argumentTypes)
throws AccessException;
}
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