spring ConstructorExecutor 源码
spring ConstructorExecutor 代码
文件路径：/spring-expression/src/main/java/org/springframework/expression/ConstructorExecutor.java
/*
* Copyright 2002-2013 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;
// TODO Is the resolver/executor model too pervasive in this package?
/**
* Executors are built by resolvers and can be cached by the infrastructure to repeat an
* operation quickly without going back to the resolvers. For example, the particular
* constructor to run on a class may be discovered by the reflection constructor resolver
* - it will then build a ConstructorExecutor that executes that constructor and the
* ConstructorExecutor can be reused without needing to go back to the resolver to
* discover the constructor again.
*
* <p>They can become stale, and in that case should throw an AccessException - this will
* cause the infrastructure to go back to the resolvers to ask for a new one.
*
* @author Andy Clement
* @since 3.0
*/
public interface ConstructorExecutor {
/**
* Execute a constructor in the specified context using the specified arguments.
* @param context the evaluation context in which the command is being executed
* @param arguments the arguments to the constructor call, should match (in terms
* of number and type) whatever the command will need to run
* @return the new object
* @throws AccessException if there is a problem executing the command or the
* CommandExecutor is no longer valid
*/
TypedValue execute(EvaluationContext context, Object... arguments) throws AccessException;
}
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