List of usage examples for java.lang.reflect InvocationHandler InvocationHandler
InvocationHandler
From source file:com.sourcesense.alfresco.opensso.MockAlfrescoApplicationContext.java
@Override public Object getBean(String name) throws BeansException { try {/* w ww .j a v a2 s . c o m*/ Class clazz = beans.get(name); Object newProxyInstance = Proxy.newProxyInstance(getClassLoader(), new Class[] { clazz }, new InvocationHandler() { public Object invoke(Object proxy, Method method, Object[] args) throws Throwable { return null; } }); return newProxyInstance; } catch (IllegalArgumentException e) { e.printStackTrace(); } return null; }
From source file:com.futureplatforms.kirin.internal.attic.ProxyGenerator.java
public <T> T javascriptProxyForRequest(final JSONObject obj, Class<T> baseInterface, Class<?>... otherClasses) { Class<?>[] allClasses;/*from www . j a v a2 s . com*/ if (otherClasses.length == 0) { allClasses = new Class[] { baseInterface }; } else { allClasses = new Class[otherClasses.length + 1]; allClasses[0] = baseInterface; System.arraycopy(otherClasses, 0, allClasses, 1, otherClasses.length); } InvocationHandler h = new InvocationHandler() { @Override public Object invoke(Object proxy, Method method, Object[] args) throws Throwable { String methodName = method.getName(); Class<?> returnType = method.getReturnType(); if (obj.has(methodName)) { String id = obj.optString("__id"); if (id != null) { // so assume it's a callback if (void.class.equals(returnType)) { mKirinHelper.jsCallbackObjectMethod(id, methodName, (Object[]) args); } else { return mKirinHelper.jsSyncCallbackObjectMethod(id, returnType, methodName, (Object[]) args); } } return null; } String propertyName = findGetter(methodName); if (propertyName != null) { return handleGetter(obj, returnType, propertyName); } if ("toString".equals(methodName) && String.class.equals(returnType)) { return obj.toString(); } return null; } }; Object proxy = Proxy.newProxyInstance(baseInterface.getClassLoader(), allClasses, h); return baseInterface.cast(proxy); }
From source file:org.dimitrovchi.conf.service.ServiceParameterUtils.java
@SuppressWarnings({ "element-type-mismatch" })
public static <P> P mergeAnnotationParameters() {
final AnnotationParameters aParameters = annotationParameters();
return (P) Proxy.newProxyInstance(Thread.currentThread().getContextClassLoader(),
aParameters.annotations.toArray(new Class[aParameters.annotations.size()]),
new InvocationHandler() {
@Override//from w w w. j a v a2 s . c o m
public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
if ("toString".equals(method.getName())) {
return reflectToString(aParameters.topCaller.getSimpleName(), proxy);
}
final Class<?> annotationClass = method.getDeclaringClass();
final List<Annotation> annotations = aParameters.annotationMap.containsKey(annotationClass)
? aParameters.annotationMap.get(annotationClass)
: Collections.<Annotation>emptyList();
for (final Annotation annotation : annotations) {
final Object value = method.invoke(annotation, args);
if (!Objects.deepEquals(method.getDefaultValue(), value)) {
return value;
}
}
return method.getDefaultValue();
}
});
}
From source file:com.nineteendrops.tracdrops.client.core.TracInvocationObjectFactoryImpl.java
public Object newInstance(ClassLoader classLoader, final Class aClass, final String remoteName) { return Proxy.newProxyInstance(classLoader, new Class[] { aClass }, new InvocationHandler() { public Object invoke(Object pProxy, Method pMethod, Object[] pArgs) throws Throwable { String tracClassName = Utils.findTracClassName(aClass); if (tracClassName == null) { throw new TracException( MessageUtils.registerErrorLog(log, "core.no.trac.classname.found", aClass.getName())); }/*www . ja v a 2s . com*/ TracClassMethod tracClassMethodMetadata = Utils.getTracClassMethodAnnotation(pMethod); String methodName = Utils.buildTracMethodNameInvocation(tracClassName, tracClassMethodMetadata); Object result = null; try { result = getClient().execute(methodName, pArgs); } catch (XmlRpcInvocationException e) { throw new TracException(MessageUtils.registerErrorLog(log, "core.invocation.factory.invocation.exception", e.getMessage()), e); } catch (XmlRpcException e) { throw new TracException(MessageUtils.registerErrorLog(log, "core.invocation.factory.xmlrpc.exception", e.getMessage()), e); } catch (Throwable e) { throw new TracException(MessageUtils.registerErrorLog(log, "core.invocation.factory.unknown.exception", e.getMessage()), e); } Class returnType = tracClassMethodMetadata.tracReturnType(); if (returnType == Object.class) { returnType = pMethod.getReturnType(); } TypeConverter typeConverter = typeConverterFactory.getTypeConverter(returnType); return typeConverter.convert(result); } }); }
From source file:org.opendaylight.ovsdb.lib.jsonrpc.JsonRpcEndpoint.java
public <T> T getClient(final Object context, Class<T> klazz) { return Reflection.newProxy(klazz, new InvocationHandler() { @Override//from w w w . jav a 2s . c om public Object invoke(Object proxy, Method method, Object[] args) throws Throwable { if (method.getName().equals(OvsdbRPC.REGISTER_CALLBACK_METHOD)) { if ((args == null) || args.length != 1 || !(args[0] instanceof OvsdbRPC.Callback)) { return false; } requestCallbacks.put(context, (OvsdbRPC.Callback) args[0]); return true; } JsonRpc10Request request = new JsonRpc10Request(UUID.randomUUID().toString()); request.setMethod(method.getName()); if (args != null && args.length != 0) { List<Object> params = null; if (args.length == 1) { if (args[0] instanceof Params) { params = ((Params) args[0]).params(); } else if (args[0] instanceof List) { params = (List<Object>) args[0]; } if (params == null) { throw new UnsupportedArgumentException("do not understand this argument yet"); } request.setParams(params); } } String requestString = objectMapper.writeValueAsString(request); logger.trace("getClient Request : {}", requestString); SettableFuture<Object> sf = SettableFuture.create(); methodContext.put(request.getId(), new CallContext(request, method, sf)); nettyChannel.writeAndFlush(requestString); return sf; } }); }
From source file:org.libreplan.web.common.ExceptionCatcherProxy.java
public T applyTo(final T instance) { return interfaceKlass.cast(Proxy.newProxyInstance(instance.getClass().getClassLoader(), new Class[] { interfaceKlass }, new InvocationHandler() { @Override/*from w ww . ja va2 s .co m*/ public Object invoke(Object proxy, Method method, Object[] args) throws Throwable { Object result; try { result = method.invoke(instance, args); return result; } catch (InvocationTargetException e) { Throwable cause = e.getCause(); if (!handled(cause)) { throw cause; } // we don't know what would be the result, so we // return null return null; } } })); }
From source file:com.nineteendrops.tracdrops.client.core.TracClientObjectFactoryImpl.java
protected Object newInstance(ClassLoader classLoader, final Class aClass, final String remoteName) { return Proxy.newProxyInstance(classLoader, new Class[] { aClass }, new InvocationHandler() { public Object invoke(Object pProxy, Method pMethod, Object[] pArgs) throws Throwable { String tracClassName = Utils.findTracClassName(aClass); if (tracClassName == null) { throw new TracException( MessageUtils.registerErrorLog(log, "core.no.trac.classname.found", aClass.getName())); }//from w w w .ja va 2 s . co m TracClassMethod tracClassMethodMetadata = Utils.getTracClassMethodAnnotation(pMethod); String tracClassMethodName = Utils.buildTracMethodNameInvocation(tracClassName, tracClassMethodMetadata); Class returnDecoder = tracClassMethodMetadata.returnDecoder(); ArrayList encodedPARGS = new ArrayList(); Annotation[][] parameterAnnotations = pMethod.getParameterAnnotations(); int parameterOrder = 0; ArrayList keptParametersForDecoder = new ArrayList(); for (Annotation[] annotations : parameterAnnotations) { Object currentParameter = pArgs[parameterOrder]; boolean skipInvocationRegistration = false; for (Annotation annotation : annotations) { if (annotation instanceof TracParameterEncoder) { Class encoder = ((TracParameterEncoder) annotation).encoder(); ParameterEncoder parameterEncoder = (ParameterEncoder) encoder.newInstance(); currentParameter = parameterEncoder.encode(tracProperties, currentParameter); } if (annotation instanceof TracParameterPolicy) { TracParameterPolicy tracParameterPolicy = (TracParameterPolicy) annotation; if (tracParameterPolicy.keptForDecoder()) { keptParametersForDecoder.add(currentParameter); } if (tracParameterPolicy.removeFromInvocation()) { skipInvocationRegistration = true; } } } if (!skipInvocationRegistration) { if (currentParameter instanceof MultiParameter) { MultiParameter multiParameter = (MultiParameter) currentParameter; for (Object objectFromMultiparameter : multiParameter.getParameters()) { encodedPARGS.add(objectFromMultiparameter); } } else { encodedPARGS.add(currentParameter); } } parameterOrder++; } if (MulticallManager.multicallActive()) { MulticallManager.multicallRegisterCall(aClass, tracClassMethodName, encodedPARGS.toArray(), returnDecoder, keptParametersForDecoder); if (log.isDebugEnabled()) { log.debug(MessageUtils.getMessage("core.invocation.multicall")); } return null; } else { MulticallManager.multicallStart(tracInvocationObjectFactory); MulticallManager.multicallRegisterCall(aClass, tracClassMethodName, encodedPARGS.toArray(), returnDecoder, keptParametersForDecoder); ArrayList result = MulticallManager.launchMulticall(tracProperties); if (log.isDebugEnabled()) { log.debug(MessageUtils.getMessage("core.invocation.singlecall")); } return result.get(0); } } }); }
From source file:org.midonet.config.ConfigProvider.java
public static <Config> Config getConfig(Class<Config> interfaces, final ConfigProvider provider) { ClassLoader classLoader = provider.getClass().getClassLoader(); InvocationHandler handler = new InvocationHandler() { @Override/*from w w w. j a va 2 s. c om*/ public Object invoke(Object proxy, Method method, Object[] args) throws Throwable { return handleInvocation(method, args, provider); } }; Class[] intsArray = { interfaces }; @SuppressWarnings("unchecked") Config proxyConfig = (Config) Proxy.newProxyInstance(classLoader, intsArray, handler); return proxyConfig; }
From source file:org.apache.ftpserver.FtpLogFactory.java
/** * Create a proxy log object to redirect log message. *///from ww w.j a va 2 s . c o m private Log createProxyLog(final Log original) { InvocationHandler handler = new InvocationHandler() { public Object invoke(Object proxy, Method m, Object[] args) throws Throwable { Object retVal = m.invoke(original, args); for (int i = m_logs.size(); --i >= 0;) { Log log = (Log) m_logs.get(i); m.invoke(log, args); } return retVal; } }; return (Log) Proxy.newProxyInstance(getClass().getClassLoader(), new Class[] { Log.class }, handler); }
From source file:com.infinities.skyport.timeout.ServiceProviderTimeLimiter.java
public <T> T newProxy(final T target, Class<T> interfaceType, final Object configuration) throws InitializationException { if (target == null) { return target; }/*from w w w.ja v a 2 s.c om*/ checkNotNull(interfaceType); checkNotNull(configuration); checkArgument(interfaceType.isInterface(), "interfaceType must be an interface type"); checkMethodOwnFunctionConfiguration(interfaceType, configuration); final Set<Method> interruptibleMethods = findInterruptibleMethods(interfaceType); InvocationHandler handler = new InvocationHandler() { @Override public Object invoke(Object obj, final Method method, final Object[] args) throws Throwable { String methodName = method.getName(); long timeoutDuration = 0; TimeUnit timeUnit = TimeUnit.SECONDS; try { FunctionConfiguration functionConfiguration = (FunctionConfiguration) PropertyUtils .getProperty(configuration, methodName); Time timeout = functionConfiguration.getTimeout(); if (timeout != null) { timeoutDuration = timeout.getNumber(); timeUnit = timeout.getUnit(); } } catch (NoSuchMethodException | IllegalArgumentException e) { if (IGNORED_SET.contains(method.getName()) || method.getAnnotation(Deprecated.class) != null) { return method.invoke(target, args); } throwCause(e, false); throw new AssertionError("can't get here"); } catch (InvocationTargetException e) { throwCause(e, false); throw new AssertionError("can't get here"); } Callable<Object> callable = new Callable<Object>() { @Override public Object call() throws Exception { try { return method.invoke(target, args); } catch (InvocationTargetException e) { throwCause(e, false); throw new AssertionError("can't get here"); } } }; if (timeoutDuration > 0) { return limiter.callWithTimeout(callable, timeoutDuration, timeUnit, interruptibleMethods.contains(method)); } else { // no timeout return method.invoke(target, args); } } }; return newProxy(interfaceType, handler); }