Examples of org.aopalliance.intercept.MethodInterceptor

org.aopalliance.intercept.MethodInterceptor
Intercepts calls on an interface on its way to the target. These are nested "on top" of the target.
The user should implement the {@link #invoke(MethodInvocation)}method to modify the original behavior. E.g. the following class implements a tracing interceptor (traces all the calls on the intercepted method(s)):
```
 class TracingInterceptor implements MethodInterceptor { Object invoke(MethodInvocation i) throws Throwable { System.out.println("method "+i.getMethod()+" is called on "+ i.getThis()+" with args "+i.getArguments()); Object ret=i.proceed(); System.out.println("method "+i.getMethod()+" returns "+ret); return ret; } } 
```

  }


  public void testUndeclaredUnheckedException() throws Throwable {
    final RuntimeException unexpectedException = new RuntimeException();
    // Test return value
    MethodInterceptor mi = new MethodInterceptor() {
      public Object invoke(MethodInvocation invocation) throws Throwable {
        throw unexpectedException;
      }
    };
    AdvisedSupport pc = new AdvisedSupport(new Class[] {ITestBean.class});

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  public void testCloneInvocationToProceedThreeTimes() throws Throwable {
    TestBean tb = new TestBean();
    ProxyFactory pc = new ProxyFactory(tb);
    pc.addInterface(ITestBean.class);


    MethodInterceptor twoBirthdayInterceptor = new MethodInterceptor() {
      public Object invoke(MethodInvocation mi) throws Throwable {
        // Clone the invocation to proceed three times
        // "The Moor's Last Sigh": this technology can cause premature aging
        MethodInvocation clone1 = ((ReflectiveMethodInvocation) mi).invocableClone();
        MethodInvocation clone2 = ((ReflectiveMethodInvocation) mi).invocableClone();

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    pc.addInterface(ITestBean.class);


    /**
     * Changes the name, then changes it back.
     */
    MethodInterceptor nameReverter = new MethodInterceptor() {
      public Object invoke(MethodInvocation mi) throws Throwable {
        MethodInvocation clone = ((ReflectiveMethodInvocation) mi).invocableClone();
        String oldName = ((ITestBean) mi.getThis()).getName();
        clone.getArguments()[0] = oldName;
        // Original method invocation should be unaffected by changes to argument list of clone

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    public static void reset() {
      methodNames.clear();
    }
    
    public PointcutForVoid() {
      setAdvice(new MethodInterceptor() {
        public Object invoke(MethodInvocation invocation) throws Throwable {
          methodNames.add(invocation.getMethod().getName());
          return invocation.proceed();
        }
      });

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  private ITestBean getAdvisedProxy(TestBean target) {
    ProxyFactory pf = new ProxyFactory(new Class[]{ITestBean.class});
    pf.setProxyTargetClass(true);


    MethodInterceptor advice = new NopInterceptor();
    Pointcut pointcut = new Pointcut() {
      public ClassFilter getClassFilter() {
        return ClassFilter.TRUE;
      }

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    // no exception 
    tb.hashCode();
    
    final Exception ex = new UnsupportedOperationException("invoke");
    // Add evil interceptor to head of list
    config.addAdvice(0, new MethodInterceptor() {
      public Object invoke(MethodInvocation invocation) throws Throwable {
        throw ex;
      }
    });
    assertEquals("Have correct advisor count", 2, config.getAdvisors().length);

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    }


    public Object invoke(MethodInvocation invocation) throws Throwable
    {
        Injector inj = injector; // volatile read
        MethodInterceptor interceptor = inj != null ? inj.getInstance(key) : null;
        if (interceptor == null)
        {
            return invocation.proceed();
        }
        else
        {
            return interceptor.invoke(invocation);
        }
    }

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        if (!(interceptors instanceof RandomAccess)) {
            // Make sure we are indexable
            interceptors = new ArrayList<MethodInterceptor>(interceptors);
        }
        
        MethodInterceptor nextInterceptor = interceptors.get(0);
        
        return nextInterceptor.invoke(new MethodInvocationImpl(args,
                thisMethod, self, interceptors, 0, proceed));
    }

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                // Call the actual method
                return ReflectionHelper.invoke(myself, proceed, arguments, locator.getNeutralContextClassLoader());
            }
            
            // Invoke the next interceptor
            MethodInterceptor nextInterceptor = interceptors.get(newIndex);
            
            return nextInterceptor.invoke(new MethodInvocationImpl(arguments,
                    method, myself, interceptors, newIndex, proceed));
        }

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                         TypeEncounter<T> encounter) {
        Class<? super T> klass = literal.getRawType();


        do {
            for (Method method : klass.getDeclaredMethods()) {
                final MethodInterceptor interceptor = CountedInterceptor.forMethod(metricRegistry,
                                                                                 klass, method);
                if (interceptor != null) {
                    encounter.bindInterceptor(Matchers.only(method), interceptor);
                }
            }

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