org.springframework.aop.framework.AopProxyUtils Maven / Gradle / Ivy
/*
* Copyright 2002-2005 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.framework;
import java.util.Arrays;
/**
* Miscellaneous utilities for AOP proxy implementations.
* @author Rod Johnson
*/
public abstract class AopProxyUtils {
/**
* Get complete set of interfaces to proxy. This will always add the Advised interface
* unless the AdvisedSupport's "opaque" flag is true.
* @return the complete set of interfaces to proxy
*/
public static Class[] completeProxiedInterfaces(AdvisedSupport advised) {
// Won't include Advised, which may be necessary.
Class[] specifiedInterfaces = advised.getProxiedInterfaces();
Class[] proxiedInterfaces = specifiedInterfaces;
if (!advised.isOpaque() && !advised.isInterfaceProxied(Advised.class)) {
// We need to add the Advised interface.
proxiedInterfaces = new Class[specifiedInterfaces.length + 1];
proxiedInterfaces[0] = Advised.class;
System.arraycopy(specifiedInterfaces, 0, proxiedInterfaces, 1, specifiedInterfaces.length);
}
return proxiedInterfaces;
}
/**
* Check equality of the proxies behind the given AdvisedSupport objects.
* Not the same as equality of the AdvisedSupport objects:
* rather, equality of interfaces, advisors and target sources.
*/
public static boolean equalsInProxy(AdvisedSupport a, AdvisedSupport b) {
if (a == b) {
return true;
}
if (!equalsProxiedInterfaces(a, b)) {
return false;
}
if (!equalsAdvisors(a, b)) {
return false;
}
if (a.getTargetSource() == null) {
return (b.getTargetSource() == null);
}
return a.getTargetSource().equals(b.getTargetSource());
}
/**
* Check equality of the proxied interfaces behind the given AdvisedSupport objects.
*/
public static boolean equalsProxiedInterfaces(AdvisedSupport a, AdvisedSupport b) {
return Arrays.equals(a.getProxiedInterfaces(), b.getProxiedInterfaces());
}
/**
* Check equality of the advisors behind the given AdvisedSupport objects.
*/
public static boolean equalsAdvisors(AdvisedSupport a, AdvisedSupport b) {
return Arrays.equals(a.getAdvisors(), b.getAdvisors());
}
}