Package tech.guilhermekaua.spigotboot.core.proxy

Class ProxyFactory

java.lang.Object

tech.guilhermekaua.spigotboot.core.proxy.ProxyFactory

public final class ProxyFactory
extends Object

Creates and caches proxy subclasses at runtime using ProxyGenerator. Supports non-final, non-primitive, non-array class targets.

Constructor Summary

Constructors

Constructor	Description
ProxyFactory()

Method Summary

Modifier and Type	Method	Description
static Object	allocateWithoutConstructor(Class<?> proxyClass)	Allocates a proxy instance without calling any constructor (via sun.misc.Unsafe).
static <T> T	createProxy(Class<T> target, Class<?>[] ctorArgTypes, Object[] ctorArgValues, MethodInterceptor handler)
static <T> Class<? extends T>	createProxyClass(Class<T> target)
static Object	invokeDefault(Method method, Object self, Object[] args)	Invokes the default-method body of method on self without virtual dispatch (which would re-enter the proxy override).

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

ProxyFactory

public ProxyFactory()

Method Details

createProxyClass

public static <T> Class<? extends T> createProxyClass(Class<T> target)

Parameters:

target - the class to proxy (must not be final, primitive, or array)

Returns:

the generated proxy subclass, cached for subsequent calls

Throws:

IllegalArgumentException - if the target cannot be proxied

createProxy

public static <T> T createProxy(Class<T> target,
 Class<?>[] ctorArgTypes,
 Object[] ctorArgValues,
 MethodInterceptor handler)

Parameters:

target - the class to proxy

ctorArgTypes - constructor parameter types, or null/empty for no-arg

ctorArgValues - constructor argument values matching ctorArgTypes

handler - the interceptor (must not be null)

Returns:

a new proxy instance with the handler installed

Throws:

RuntimeException - if constructor invocation fails

allocateWithoutConstructor

public static Object allocateWithoutConstructor(Class<?> proxyClass)

Allocates a proxy instance without calling any constructor (via sun.misc.Unsafe).

Parameters:

proxyClass - a proxy class returned by createProxyClass(java.lang.Class<T>)

Returns:

an uninitialized instance

Throws:

RuntimeException - if allocation fails

invokeDefault

public static Object invokeDefault(Method method,
 Object self,
 Object[] args)
                            throws Throwable

Invokes the default-method body of method on self without virtual dispatch (which would re-enter the proxy override). Called by generated _proceed_ methods; not intended as public API.

Parameters:

method - a default method declared on an interface

self - the proxy instance implementing that interface

args - invocation arguments

Returns:

whatever the default-method body returns

Throws:

Throwable - anything the default-method body throws