/*
* Copyright 2002-2006 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.core;
import java.lang.reflect.Constructor;
import java.lang.reflect.Method;
/**
* Interface to discover parameter names for methods and constructors.
*
* <p>Parameter name discovery is not always possible, but various strategies are
* available to try, such as looking for debug information that may have been
* emitted at compile time, and looking for argname annotation values optionally
* accompanying AspectJ annotated methods.
*
* @author Rod Johnson
* @author Adrian Colyer
* @since 2.0
*/
public interface ParameterNameDiscoverer {
/**
* Return parameter names for this method,
* or <code>null</code> if they cannot be determined.
* @param method method to find parameter names for
* @return an array of parameter names if the names can be resolved,
* or <code>null</code> if they cannot
*/
String[] getParameterNames(Method method);
/**
* Return parameter names for this constructor,
* or <code>null</code> if they cannot be determined.
* @param ctor constructor to find parameter names for
* @return an array of parameter names if the names can be resolved,
* or <code>null</code> if they cannot
*/
String[] getParameterNames(Constructor ctor);
}
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