Java Code Examples for net.sf.cglib.proxy.Enhancer#createClass()

@Override
public Object getProxy(ClassLoader classLoader) {
    Enhancer enhancer = new Enhancer();
    enhancer.setClassLoader(classLoader);
    enhancer.setCallbackType(MethodInterceptor.class);

    Class<?> targetClass = support.getBeanClass();
    enhancer.setSuperclass(targetClass);
    enhancer.setInterfaces(new Class[]{FestivalProxy.class, TargetClassAware.class});
    Class<?> proxyClass = enhancer.createClass();

    Objenesis objenesis = new ObjenesisStd();
    ObjectInstantiator<?> instantiator = objenesis.getInstantiatorOf(proxyClass);
    Object proxyInstance = instantiator.newInstance();

    ((Factory) proxyInstance).setCallbacks(new Callback[]{new CglibMethodInterceptor(support)});

    return proxyInstance;
}
 

ReflectiveParserImpl(Class<?> base, List<Property<?, ?>> properties) {
    InjectionChecks.checkInjectableCGLibProxyBase(base);

    this.properties = properties;
    this.propertyNames = properties.stream()
                                   .flatMap(property -> property.parser.names().stream())
                                   .collect(Collectors.toImmutableSet());

    final Enhancer enhancer = new Enhancer();
    enhancer.setSuperclass(base);
    enhancer.setInterfaces(new Class[]{ type.getRawType() });
    enhancer.setCallbackType(MethodInterceptor.class);
    enhancer.setUseFactory(true);
    this.impl = enhancer.createClass();
    this.injector = getMembersInjector((Class<T>) impl);
}
 

public BasicProxyFactoryImpl(Class superClass, Class[] interfaces) {
	if ( superClass == null && ( interfaces == null || interfaces.length < 1 ) ) {
		throw new AssertionFailure( "attempting to build proxy without any superclass or interfaces" );
	}

	Enhancer en = new Enhancer();
	en.setUseCache( false );
	en.setInterceptDuringConstruction( false );
	en.setUseFactory( true );
	en.setCallbackTypes( CALLBACK_TYPES );
	en.setCallbackFilter( FINALIZE_FILTER );
	if ( superClass != null ) {
		en.setSuperclass( superClass );
	}
	if ( interfaces != null && interfaces.length > 0 ) {
		en.setInterfaces( interfaces );
	}
	proxyClass = en.createClass();
	try {
		factory = ( Factory ) proxyClass.newInstance();
	}
	catch ( Throwable t ) {
		throw new HibernateException( "Unable to build CGLIB Factory instance" );
	}
}
 

@Override
public <T, D extends Decorator<T>> DecoratorGenerator.Meta<T, D> implement(Class<T> type, Class<D> decorator) {
    final Enhancer enhancer = new Enhancer();
    enhancer.setSuperclass(decorator);
    enhancer.setCallbackType(MethodInterceptor.class);
    final Class<? extends D> impl = enhancer.createClass();
    enhancer.setCallback(new Callback<>(type, decorator));
    return new CGMeta(type, decorator, impl, enhancer);
}
 

@SuppressWarnings("unchecked") // the constructor promises to construct 'T's
ProxyConstructor(Enhancer enhancer, InjectionPoint injectionPoint, Callback[] callbacks,
    ImmutableMap<Method, List<MethodInterceptor>> methodInterceptors) {
  this.enhanced = enhancer.createClass(); // this returns a cached class if possible
  this.injectionPoint = injectionPoint;
  this.constructor = (Constructor<T>) injectionPoint.getMember();
  this.callbacks = callbacks;
  this.methodInterceptors = methodInterceptors;
  this.fastClass = newFastClassForMember(enhanced, constructor);
  this.constructorIndex = fastClass.getIndex(constructor.getParameterTypes());
}
 

public static Class getProxyFactory(Class persistentClass, Class[] interfaces)
		throws HibernateException {
	Enhancer e = new Enhancer();
	e.setSuperclass( interfaces.length == 1 ? persistentClass : null );
	e.setInterfaces(interfaces);
	e.setCallbackTypes(new Class[]{
		InvocationHandler.class,
		NoOp.class,
  		});
 		e.setCallbackFilter(FINALIZE_FILTER);
 		e.setUseFactory(false);
	e.setInterceptDuringConstruction( false );
	return e.createClass();
}
 

public T getProxy() {
    Class proxyClass = getProxy(delegateClass.getName());
    if (proxyClass == null) {
        Enhancer enhancer = new Enhancer();
        if (delegateClass.isInterface()) { // 判断是否为接口，优先进行接口代理可以解决service为final
            enhancer.setInterfaces(new Class[] { delegateClass });
        } else {
            enhancer.setSuperclass(delegateClass);
        }
        enhancer.setCallbackTypes(new Class[] { ProxyDirect.class, ProxyInterceptor.class });
        enhancer.setCallbackFilter(new ProxyRoute());
        proxyClass = enhancer.createClass();
        // 注册proxyClass
        registerProxy(delegateClass.getName(), proxyClass);
    }

    Enhancer.registerCallbacks(proxyClass, new Callback[] { new ProxyDirect(), new ProxyInterceptor() });
    try {
        Object[] _constructorArgs = new Object[0];
        Constructor _constructor = proxyClass.getConstructor(new Class[] {});// 先尝试默认的空构造函数
        return (T) _constructor.newInstance(_constructorArgs);
    } catch (Throwable e) {
        throw new OptimizerException(e);
    } finally {
        // clear thread callbacks to allow them to be gc'd
        Enhancer.registerStaticCallbacks(proxyClass, null);
    }
}
 

@SuppressWarnings("unchecked")
private static <T> T proxyFor(Class<T> type) throws Exception {
  Enhancer enhancer = new Enhancer();
  enhancer.setSuperclass(TestCommand.class);
  enhancer.setCallbackType(NoOp.class);
  Class<T> enhanced = enhancer.createClass();
  return enhanced.newInstance();
}
 

public void shouldDeProxyCGLibProxy() throws Exception {
  Enhancer enhancer = new Enhancer();
  enhancer.setSuperclass(ArrayList.class);
  enhancer.setCallbackTypes(new Class[] { NoOp.class });
  Class<?> proxy = enhancer.createClass();

  assertEquals(Types.deProxy(proxy), ArrayList.class);
}
 

/**
 * Performs a benchmark for a trivial class creation using cglib.
 *
 * @return The created instance, in order to avoid JIT removal.
 */
@Benchmark
public Class<?> benchmarkCglib() {
    Enhancer enhancer = new Enhancer();
    enhancer.setUseCache(false);
    enhancer.setClassLoader(newClassLoader());
    enhancer.setSuperclass(baseClass);
    enhancer.setCallbackType(NoOp.class);
    return enhancer.createClass();
}
 

private Class enhanceServiceEndpointInterface(Class serviceEndpointInterface, ClassLoader classLoader) {
    Enhancer enhancer = new Enhancer();
    enhancer.setClassLoader(classLoader);
    enhancer.setSuperclass(GenericServiceEndpointWrapper.class);
    enhancer.setInterfaces(new Class[]{serviceEndpointInterface});
    enhancer.setCallbackFilter(new NoOverrideCallbackFilter(GenericServiceEndpointWrapper.class));
    enhancer.setCallbackTypes(new Class[]{NoOp.class, MethodInterceptor.class});
    enhancer.setUseFactory(false);
    enhancer.setUseCache(false);

    return enhancer.createClass();
}
 

@Setup
public void setUp() {
   for(int i = 0; i < COUNT; i++) {
      Enhancer enhancer = new Enhancer();
      enhancer.setUseCache(false); // deactivate the cache to get a new instance each time
      enhancer.setCallbackType(NoOp.class);
      Class<?> c = enhancer.createClass();
      toInstantiate[i] = c;
   }
}