com.github.andyshao.proxy.DynamicPF Maven / Gradle / Ivy
package com.github.andyshao.proxy;
import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Method;
import java.lang.reflect.Proxy;
public interface DynamicPF {
Class[] proxyInterfaces(T target);
/**
* when the method which will be invoke should be proxy.
* this method will be run.
*
* @param target the target which will be proxy
* @param method the method which will be invoke
* @param args the args of method
* @return the answer of method
* @throws Throwable andy exception when run this method
*/
Object invoke(T target , Method method , Object[] args) throws Throwable;
/**
* the methods which will be proxied
*
* @param target the target which will be proxy
* @param method the method which will be invoke
* @param args the args of method
* @return the methods collection
*/
boolean proxyMethods(T target , Method method , Object[] args);
@SuppressWarnings("unchecked")
public default T getProxy(T target , InvocationHandler invocationHandler) {
return (T) Proxy.newProxyInstance(target.getClass().getClassLoader() , this.proxyInterfaces(target) ,
invocationHandler);
}
public default ProxyFactory toProxyFactory(){
return new ProxyFactory() {
@Override
public T apply(T target) {
return DynamicPF.this.getProxy(target, new InvocationHandler() {
private volatile T proxy;
@Override
public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
if(DynamicPF.this.proxyMethods(this.proxy, method, args)){
return DynamicPF.this.invoke(this.proxy, method, args);
}
return method.invoke(this.proxy, args);
}
public InvocationHandler setProxy(T proxy) {
this.proxy = proxy;
return this;
}
}.setProxy(target));
}
};
}
}