Java Code Examples for org.springframework.util.ReflectionUtils#accessibleConstructor()

The following examples show how to use org.springframework.util.ReflectionUtils#accessibleConstructor() . These examples are extracted from open source projects. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example 1
private StreamListenerMessageHandler buildStreamListener(Class<?> handlerClass,
			String handlerMethodName, Class<?>... parameters) throws Exception {
		String channelName = "reply_" + System.nanoTime();

		this.applicationContext.getBeanFactory().registerSingleton(channelName, new QueueChannel());

		Method m = ReflectionUtils.findMethod(handlerClass, handlerMethodName,
				parameters);
		InvocableHandlerMethod method = new InvocableHandlerMethod(this, m);
		HandlerMethodArgumentResolverComposite resolver = new HandlerMethodArgumentResolverComposite();
		CompositeMessageConverterFactory factory = new CompositeMessageConverterFactory();
		resolver.addResolver(new PayloadArgumentResolver(
				factory.getMessageConverterForAllRegistered()));
		method.setMessageMethodArgumentResolvers(resolver);
		Constructor<?> c = ReflectionUtils.accessibleConstructor(
				StreamListenerMessageHandler.class, InvocableHandlerMethod.class,
				boolean.class, String[].class);
		StreamListenerMessageHandler handler = (StreamListenerMessageHandler) c
				.newInstance(method, false, new String[] {});
		handler.setOutputChannelName(channelName);
		handler.setBeanFactory(this.applicationContext);
		handler.afterPropertiesSet();
//		context.refresh();
		return handler;
	}
 
Example 2
Source Project: spring-analysis-note   File: Indexer.java    License: MIT License 5 votes vote down vote up
private void growCollectionIfNecessary() {
	if (this.index >= this.collection.size()) {
		if (!this.growCollection) {
			throw new SpelEvaluationException(getStartPosition(), SpelMessage.COLLECTION_INDEX_OUT_OF_BOUNDS,
					this.collection.size(), this.index);
		}
		if (this.index >= this.maximumSize) {
			throw new SpelEvaluationException(getStartPosition(), SpelMessage.UNABLE_TO_GROW_COLLECTION);
		}
		if (this.collectionEntryDescriptor.getElementTypeDescriptor() == null) {
			throw new SpelEvaluationException(
					getStartPosition(), SpelMessage.UNABLE_TO_GROW_COLLECTION_UNKNOWN_ELEMENT_TYPE);
		}
		TypeDescriptor elementType = this.collectionEntryDescriptor.getElementTypeDescriptor();
		try {
			Constructor<?> ctor = ReflectionUtils.accessibleConstructor(elementType.getType());
			int newElements = this.index - this.collection.size();
			while (newElements >= 0) {
				this.collection.add(ctor.newInstance());
				newElements--;
			}
		}
		catch (Throwable ex) {
			throw new SpelEvaluationException(getStartPosition(), ex, SpelMessage.UNABLE_TO_GROW_COLLECTION);
		}
	}
}
 
Example 3
Source Project: java-technology-stack   File: Indexer.java    License: MIT License 5 votes vote down vote up
private void growCollectionIfNecessary() {
	if (this.index >= this.collection.size()) {
		if (!this.growCollection) {
			throw new SpelEvaluationException(getStartPosition(), SpelMessage.COLLECTION_INDEX_OUT_OF_BOUNDS,
					this.collection.size(), this.index);
		}
		if (this.index >= this.maximumSize) {
			throw new SpelEvaluationException(getStartPosition(), SpelMessage.UNABLE_TO_GROW_COLLECTION);
		}
		if (this.collectionEntryDescriptor.getElementTypeDescriptor() == null) {
			throw new SpelEvaluationException(
					getStartPosition(), SpelMessage.UNABLE_TO_GROW_COLLECTION_UNKNOWN_ELEMENT_TYPE);
		}
		TypeDescriptor elementType = this.collectionEntryDescriptor.getElementTypeDescriptor();
		try {
			Constructor<?> ctor = ReflectionUtils.accessibleConstructor(elementType.getType());
			int newElements = this.index - this.collection.size();
			while (newElements >= 0) {
				this.collection.add(ctor.newInstance());
				newElements--;
			}
		}
		catch (Throwable ex) {
			throw new SpelEvaluationException(getStartPosition(), ex, SpelMessage.UNABLE_TO_GROW_COLLECTION);
		}
	}
}
 
Example 4
@Bean
@ConfigurationProperties(prefix = "spring.cloud.stream.kafka.streams.binder")
public KafkaStreamsBinderConfigurationProperties binderConfigurationProperties(
		KafkaProperties kafkaProperties, ConfigurableEnvironment environment,
		BindingServiceProperties properties, ConfigurableApplicationContext context) throws Exception {
	final Map<String, BinderConfiguration> binderConfigurations = getBinderConfigurations(
			properties);
	for (Map.Entry<String, BinderConfiguration> entry : binderConfigurations
			.entrySet()) {
		final BinderConfiguration binderConfiguration = entry.getValue();
		final String binderType = binderConfiguration.getBinderType();
		if (binderType != null && (binderType.equals(KSTREAM_BINDER_TYPE)
				|| binderType.equals(KTABLE_BINDER_TYPE)
				|| binderType.equals(GLOBALKTABLE_BINDER_TYPE))) {
			Map<String, Object> binderProperties = new HashMap<>();
			this.flatten(null, binderConfiguration.getProperties(), binderProperties);
			environment.getPropertySources().addFirst(
					new MapPropertySource(entry.getKey() + "-kafkaStreamsBinderEnv", binderProperties));

			Binder binder = new Binder(ConfigurationPropertySources.get(environment),
					new PropertySourcesPlaceholdersResolver(environment),
					IntegrationUtils.getConversionService(context.getBeanFactory()), null);
			final Constructor<KafkaStreamsBinderConfigurationProperties> kafkaStreamsBinderConfigurationPropertiesConstructor =
					ReflectionUtils.accessibleConstructor(KafkaStreamsBinderConfigurationProperties.class, KafkaProperties.class);
			final KafkaStreamsBinderConfigurationProperties kafkaStreamsBinderConfigurationProperties =
					BeanUtils.instantiateClass(kafkaStreamsBinderConfigurationPropertiesConstructor, kafkaProperties);
			final BindResult<KafkaStreamsBinderConfigurationProperties> bind = binder.bind("spring.cloud.stream.kafka.streams.binder", Bindable.ofInstance(kafkaStreamsBinderConfigurationProperties));
			context.getBeanFactory().registerSingleton(
					entry.getKey() + "-KafkaStreamsBinderConfigurationProperties",
					bind.get());
		}
	}
	return new KafkaStreamsBinderConfigurationProperties(kafkaProperties);
}