/*
* Copyright 2002-2007 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.aop;
import org.aopalliance.intercept.MethodInvocation;
/**
* Extension of the AOP Alliance {@link org.aopalliance.intercept.MethodInvocation}
* interface, allowing access to the proxy that the method invocation was made through.
*
* <p>Useful to be able to substitute return values with the proxy,
* if necessary, for example if the invocation target returned itself.
*
* @author Juergen Hoeller
* @author Adrian Colyer
* @since 1.1.3
* @see org.springframework.aop.framework.ReflectiveMethodInvocation
* @see org.springframework.aop.support.DelegatingIntroductionInterceptor
*/
public interface ProxyMethodInvocation extends MethodInvocation {
/**
* Return the proxy that this method invocation was made through.
* @return the original proxy object
*/
Object getProxy();
/**
* Create a clone of this object. If cloning is done before <code>proceed()</code>
* is invoked on this object, <code>proceed()</code> can be invoked once per clone
* to invoke the joinpoint (and the rest of the advice chain) more than once.
* @return an invocable clone of this invocation.
* <code>proceed()</code> can be called once per clone.
*/
MethodInvocation invocableClone();
/**
* Create a clone of this object. If cloning is done before <code>proceed()</code>
* is invoked on this object, <code>proceed()</code> can be invoked once per clone
* to invoke the joinpoint (and the rest of the advice chain) more than once.
* @param arguments the arguments that the cloned invocation is supposed to use,
* overriding the original arguments
* @return an invocable clone of this invocation.
* <code>proceed()</code> can be called once per clone.
*/
MethodInvocation invocableClone(Object[] arguments);
/**
* Set the arguments to be used on subsequent invocations in the any advice
* in this chain.
* @param arguments the argument array
*/
void setArguments(Object[] arguments);
/**
* Add the specified user attribute with the given value to this invocation.
* <p>Such attributes are not used within the AOP framework itself. They are
* just kept as part of the invocation object, for use in special interceptors.
* @param key the name of the attribute
* @param value the value of the attribute, or <code>null</code> to reset it
*/
void setUserAttribute(String key, Object value);
/**
* Return the value of the specified user attribute.
* @param key the name of the attribute
* @return the value of the attribute, or <code>null</code> if not set
* @see #setUserAttribute
*/
Object getUserAttribute(String key);
}
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