public interface AopProxyFactory {
/**
* Create an {@link AopProxy} for the given AOP configuration.
* @param config the AOP configuration in the form of an
* AdvisedSupport object
* @return the corresponding AOP proxy
* @throws AopConfigException if the configuration is invalid
*/
AopProxy createAopProxy(AdvisedSupport config) throws AopConfigException;
}
このインターフェイスは、Aop プロキシ オブジェクトの作成に使用される createAopProxy という 1 つのメソッドのみを使用します。これには、DefaultAopProxyFactory という 1 つの実装クラスしかありません。 public class DefaultAopProxyFactoryimplements AopProxyFactory, Serializable
{
@Override
public AopProxy createAopProxy(AdvisedSupport config) throws AopConfigException {
if (config.isOptimize() || config.isProxyTargetClass() || hasNoUserSuppliedProxyInterfaces(config)) {
Class<?> targetClass = config.getTargetClass();
if (targetClass == null) {
throw new AopConfigException("TargetSource cannot determine target class: " +
"Either an interface or a target is required for proxy creation.");
}
if (targetClass.isInterface() || Proxy.isProxyClass(targetClass)) {
return new JdkDynamicAopProxy(config);
}
return new ObjenesisCglibAopProxy(config);
}
else {
return new JdkDynamicAopProxy(config);
}
}
/**
* Determine whether the supplied {@link AdvisedSupport} has only the
* {@link org.springframework.aop.SpringProxy} interface specified
* (or no proxy interfaces specified at all).
*/
private boolean hasNoUserSuppliedProxyInterfaces(AdvisedSupport config) {
Class<?>[] ifcs = config.getProxiedInterfaces();
return (ifcs.length == 0 || (ifcs.length == 1 && SpringProxy.class.isAssignableFrom(ifcs[0])));
}
}