Example usage for org.springframework.aop.target EmptyTargetSource INSTANCE

Introduction

In this page you can find the example usage for org.springframework.aop.target EmptyTargetSource INSTANCE.

Prototype

EmptyTargetSource INSTANCE

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Document

The canonical (Singleton) instance of this EmptyTargetSource .

Usage

From source file:org.springmodules.cache.interceptor.proxy.CacheProxyFactoryBeanTests.java

public void testAfterPropertiesSetWithProxyInterfacesEqualToNullAndProxyTargetFlagEqualToFalseAndTargetInstanceOfTargetSource()
        throws Exception {
    expectAfterPropertiesSetOnInterceptors();
    replay();//  w w w.java  2  s  . co m

    factoryBean.setProxyTargetClass(false);
    Object targetInstanceOfTargetSource = EmptyTargetSource.INSTANCE;
    factoryBean.setTarget(targetInstanceOfTargetSource);

    try {
        factoryBean.afterPropertiesSet();
        fail();
    } catch (AopConfigException exception) {
        // we are expecting this exception.
    }

    verify();
}

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From source file:org.springmodules.cache.interceptor.proxy.CacheProxyFactoryBeanTests.java

/**
 * Verifies that the method// w ww. j  av a  2  s  .  c o m
 * <code>{@link CacheProxyFactoryBean#createTargetSource(Object)}</code>
 * returns the same object sent as argument if such argument is an instance of
 * <code>org.springframework.aop.TargetSource</code>.
 */
public void testCreateTargetSourceWithTargetObjectInstanceOfTargetSource() {
    Object targetObject = EmptyTargetSource.INSTANCE;
    assertSame(targetObject, factoryBean.createTargetSource(targetObject));
}

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From source file:org.springmodules.cache.interceptor.proxy.CacheProxyFactoryBeanTests.java

/**
 * Verifies that the method/*w ww .ja v  a  2 s  . c  om*/
 * <code>{@link CacheProxyFactoryBean#getObjectType()}</code> returns the
 * class of the target if:
 * <ul>
 * <li>The proxy is <code>null</code>.</li>
 * <li>The target is not <code>null</code> and it is an instance of
 * <code>org.springframework.aop.TargetSource</code>.</li>
 * </ul>
 */
public void testGetObjectTypeWhenProxyIsNullAndTargetIsNotNullAndTargetIsInstanceOfTargetSource() {
    TargetSource instanceOfTargetSource = EmptyTargetSource.INSTANCE;
    factoryBean.setTarget(instanceOfTargetSource);
    // verify that the proxy is null before running the method to test.
    assertNull(factoryBean.getProxy());
    assertEquals(instanceOfTargetSource.getClass(), factoryBean.getObjectType());
}

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From source file:org.springframework.cloud.iot.coap.method.ResolvableMethod.java

@SuppressWarnings("unchecked")
private static <T> T initProxy(Class<?> type, MethodInvocationInterceptor interceptor) {
    Assert.notNull(type, "'type' must not be null");
    if (type.isInterface()) {
        ProxyFactory factory = new ProxyFactory(EmptyTargetSource.INSTANCE);
        factory.addInterface(type);/*from w ww  .  ja v  a  2s  .  co  m*/
        factory.addInterface(Supplier.class);
        factory.addAdvice(interceptor);
        return (T) factory.getProxy();
    }

    else {
        Enhancer enhancer = new Enhancer();
        enhancer.setSuperclass(type);
        enhancer.setInterfaces(new Class<?>[] { Supplier.class });
        enhancer.setNamingPolicy(SpringNamingPolicy.INSTANCE);
        enhancer.setCallbackType(org.springframework.cglib.proxy.MethodInterceptor.class);

        Class<?> proxyClass = enhancer.createClass();
        Object proxy = null;

        if (objenesis.isWorthTrying()) {
            try {
                proxy = objenesis.newInstance(proxyClass, enhancer.getUseCache());
            } catch (ObjenesisException ex) {
                logger.debug("Objenesis failed, falling back to default constructor", ex);
            }
        }

        if (proxy == null) {
            try {
                proxy = ReflectionUtils.accessibleConstructor(proxyClass).newInstance();
            } catch (Throwable ex) {
                throw new IllegalStateException("Unable to instantiate proxy "
                        + "via both Objenesis and default constructor fails as well", ex);
            }
        }

        ((Factory) proxy).setCallbacks(new Callback[] { interceptor });
        return (T) proxy;
    }
}

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From source file:org.springframework.web.servlet.mvc.method.annotation.MvcUriComponentsBuilder.java

@SuppressWarnings("unchecked")
private static <T> T initProxy(Class<?> type, ControllerMethodInvocationInterceptor interceptor) {
    if (type.isInterface()) {
        ProxyFactory factory = new ProxyFactory(EmptyTargetSource.INSTANCE);
        factory.addInterface(type);/*from w  w w . j a v a 2 s .  co  m*/
        factory.addInterface(MethodInvocationInfo.class);
        factory.addAdvice(interceptor);
        return (T) factory.getProxy();
    }

    else {
        Enhancer enhancer = new Enhancer();
        enhancer.setSuperclass(type);
        enhancer.setInterfaces(new Class<?>[] { MethodInvocationInfo.class });
        enhancer.setNamingPolicy(SpringNamingPolicy.INSTANCE);
        enhancer.setCallbackType(org.springframework.cglib.proxy.MethodInterceptor.class);

        Class<?> proxyClass = enhancer.createClass();
        Object proxy = null;

        if (objenesis.isWorthTrying()) {
            try {
                proxy = objenesis.newInstance(proxyClass, enhancer.getUseCache());
            } catch (ObjenesisException ex) {
                logger.debug("Unable to instantiate controller proxy using Objenesis, "
                        + "falling back to regular construction", ex);
            }
        }

        if (proxy == null) {
            try {
                proxy = ReflectionUtils.accessibleConstructor(proxyClass).newInstance();
            } catch (Throwable ex) {
                throw new IllegalStateException(
                        "Unable to instantiate controller proxy using Objenesis, "
                                + "and regular controller instantiation via default constructor fails as well",
                        ex);
            }
        }

        ((Factory) proxy).setCallbacks(new Callback[] { interceptor });
        return (T) proxy;
    }
}

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From source file:org.springframework.web.servlet.mvc.support.MvcUrlUtils.java

@SuppressWarnings("unchecked")
private static <T> T initProxy(Class<?> type, ControllerMethodInvocationInterceptor interceptor) {

    if (type.isInterface()) {
        ProxyFactory factory = new ProxyFactory(EmptyTargetSource.INSTANCE);
        factory.addInterface(type);/*from   ww  w . j a  v  a2  s  .co  m*/
        factory.addInterface(ControllerMethodValues.class);
        factory.addAdvice(interceptor);
        return (T) factory.getProxy();
    } else {
        Enhancer enhancer = new Enhancer();
        enhancer.setSuperclass(type);
        enhancer.setInterfaces(new Class<?>[] { ControllerMethodValues.class });
        enhancer.setCallbackType(org.springframework.cglib.proxy.MethodInterceptor.class);

        Factory factory = (Factory) OBJENESIS.newInstance(enhancer.createClass());
        factory.setCallbacks(new Callback[] { interceptor });
        return (T) factory;
    }
}

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