/**
* Equality means interfaces, advisors and TargetSource are equal.
*
* <p>The compared object may be a JdkDynamicAopProxy instance itself or a dynamic proxy wrapping
* a JdkDynamicAopProxy instance.
*/
public boolean equals(Object other) {
if (other == this) {
return true;
}
if (other == null) {
return false;
}
JdkDynamicAopProxy otherProxy = null;
if (other instanceof JdkDynamicAopProxy) {
otherProxy = (JdkDynamicAopProxy) other;
} else if (Proxy.isProxyClass(other.getClass())) {
InvocationHandler ih = Proxy.getInvocationHandler(other);
if (!(ih instanceof JdkDynamicAopProxy)) {
return false;
}
otherProxy = (JdkDynamicAopProxy) ih;
} else {
// Not a valid comparison...
return false;
}
// If we get here, aopr2 is the other AopProxy.
return AopProxyUtils.equalsInProxy(this.advised, otherProxy.advised);
}
public Object getProxy(ClassLoader classLoader) {
if (logger.isDebugEnabled()) {
logger.debug(
"Creating JDK dynamic proxy: target source is " + this.advised.getTargetSource());
}
Class[] proxiedInterfaces = AopProxyUtils.completeProxiedInterfaces(this.advised);
findDefinedEqualsAndHashCodeMethods(proxiedInterfaces);
return Proxy.newProxyInstance(classLoader, proxiedInterfaces, this);
}
@Override
public Object intercept(Object proxy, Method method, Object[] args, MethodProxy methodProxy)
throws Throwable {
Object oldProxy = null;
boolean setProxyContext = false;
Class<?> targetClass = null;
Object target = null;
try {
if (this.advised.exposeProxy) {
// Make invocation available if necessary.
oldProxy = AopContext.setCurrentProxy(proxy);
setProxyContext = true;
}
// May be null. Get as late as possible to minimize the time we
// "own" the target, in case it comes from a pool...
target = getTarget();
if (target != null) {
targetClass = target.getClass();
}
List<Object> chain =
this.advised.getInterceptorsAndDynamicInterceptionAdvice(method, targetClass);
Object retVal;
// Check whether we only have one InvokerInterceptor: that is,
// no real advice, but just reflective invocation of the target.
if (chain.isEmpty() && Modifier.isPublic(method.getModifiers())) {
// We can skip creating a MethodInvocation: just invoke the target directly.
// Note that the final invoker must be an InvokerInterceptor, so we know
// it does nothing but a reflective operation on the target, and no hot
// swapping or fancy proxying.
Object[] argsToUse = AopProxyUtils.adaptArgumentsIfNecessary(method, args);
retVal = methodProxy.invoke(target, argsToUse);
} else {
// We need to create a method invocation...
retVal =
new CglibMethodInvocation(
proxy, target, method, args, targetClass, chain, methodProxy)
.proceed();
}
retVal = processReturnType(proxy, target, method, retVal);
return retVal;
} finally {
if (target != null) {
releaseTarget(target);
}
if (setProxyContext) {
// Restore old proxy.
AopContext.setCurrentProxy(oldProxy);
}
}
}
@Override
public Object intercept(Object proxy, Method method, Object[] args, MethodProxy methodProxy) {
Object other = args[0];
if (proxy == other) {
return true;
}
if (other instanceof Factory) {
Callback callback = ((Factory) other).getCallback(INVOKE_EQUALS);
if (!(callback instanceof EqualsInterceptor)) {
return false;
}
AdvisedSupport otherAdvised = ((EqualsInterceptor) callback).advised;
return AopProxyUtils.equalsInProxy(this.advised, otherAdvised);
} else {
return false;
}
}
@Override
public boolean equals(Object other) {
if (this == other) {
return true;
}
if (!(other instanceof ProxyCallbackFilter)) {
return false;
}
ProxyCallbackFilter otherCallbackFilter = (ProxyCallbackFilter) other;
AdvisedSupport otherAdvised = otherCallbackFilter.advised;
if (this.advised == null || otherAdvised == null) {
return false;
}
if (this.advised.isFrozen() != otherAdvised.isFrozen()) {
return false;
}
if (this.advised.isExposeProxy() != otherAdvised.isExposeProxy()) {
return false;
}
if (this.advised.getTargetSource().isStatic() != otherAdvised.getTargetSource().isStatic()) {
return false;
}
if (!AopProxyUtils.equalsProxiedInterfaces(this.advised, otherAdvised)) {
return false;
}
// Advice instance identity is unimportant to the proxy class:
// All that matters is type and ordering.
Advisor[] thisAdvisors = this.advised.getAdvisors();
Advisor[] thatAdvisors = otherAdvised.getAdvisors();
if (thisAdvisors.length != thatAdvisors.length) {
return false;
}
for (int i = 0; i < thisAdvisors.length; i++) {
Advisor thisAdvisor = thisAdvisors[i];
Advisor thatAdvisor = thatAdvisors[i];
if (!equalsAdviceClasses(thisAdvisor, thatAdvisor)) {
return false;
}
if (!equalsPointcuts(thisAdvisor, thatAdvisor)) {
return false;
}
}
return true;
}
@Override
public boolean equals(Object other) {
return (this == other
|| (other instanceof CglibAopProxy
&& AopProxyUtils.equalsInProxy(this.advised, ((CglibAopProxy) other).advised)));
}
@Override
public Object getProxy(ClassLoader classLoader) {
if (logger.isDebugEnabled()) {
logger.debug("Creating CGLIB proxy: target source is " + this.advised.getTargetSource());
}
try {
Class<?> rootClass = this.advised.getTargetClass();
Assert.state(rootClass != null, "Target class must be available for creating a CGLIB proxy");
Class<?> proxySuperClass = rootClass;
if (ClassUtils.isCglibProxyClass(rootClass)) {
proxySuperClass = rootClass.getSuperclass();
Class<?>[] additionalInterfaces = rootClass.getInterfaces();
for (Class<?> additionalInterface : additionalInterfaces) {
this.advised.addInterface(additionalInterface);
}
}
// Validate the class, writing log messages as necessary.
validateClassIfNecessary(proxySuperClass, classLoader);
// Configure CGLIB Enhancer...
Enhancer enhancer = createEnhancer();
if (classLoader != null) {
enhancer.setClassLoader(classLoader);
if (classLoader instanceof SmartClassLoader
&& ((SmartClassLoader) classLoader).isClassReloadable(proxySuperClass)) {
enhancer.setUseCache(false);
}
}
enhancer.setSuperclass(proxySuperClass);
enhancer.setInterfaces(AopProxyUtils.completeProxiedInterfaces(this.advised));
enhancer.setNamingPolicy(SpringNamingPolicy.INSTANCE);
enhancer.setStrategy(new ClassLoaderAwareUndeclaredThrowableStrategy(classLoader));
Callback[] callbacks = getCallbacks(rootClass);
Class<?>[] types = new Class<?>[callbacks.length];
for (int x = 0; x < types.length; x++) {
types[x] = callbacks[x].getClass();
}
// fixedInterceptorMap only populated at this point, after getCallbacks call above
enhancer.setCallbackFilter(
new ProxyCallbackFilter(
this.advised.getConfigurationOnlyCopy(),
this.fixedInterceptorMap,
this.fixedInterceptorOffset));
enhancer.setCallbackTypes(types);
// Generate the proxy class and create a proxy instance.
return createProxyClassAndInstance(enhancer, callbacks);
} catch (CodeGenerationException ex) {
throw new AopConfigException(
"Could not generate CGLIB subclass of class ["
+ this.advised.getTargetClass()
+ "]: "
+ "Common causes of this problem include using a final class or a non-visible class",
ex);
} catch (IllegalArgumentException ex) {
throw new AopConfigException(
"Could not generate CGLIB subclass of class ["
+ this.advised.getTargetClass()
+ "]: "
+ "Common causes of this problem include using a final class or a non-visible class",
ex);
} catch (Exception ex) {
// TargetSource.getTarget() failed
throw new AopConfigException("Unexpected AOP exception", ex);
}
}
