Java Code Examples for org.springframework.context.ApplicationContext#isSingleton()

The following examples show how to use org.springframework.context.ApplicationContext#isSingleton() . 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
Source File: BaseAutoConfiguration.java    From graphql-spqr-spring-boot-starter with Apache License 2.0 5 votes vote down vote up 
static BeanScope findBeanScope(ApplicationContext context, String beanName) {
    if (context.isSingleton(beanName)) {
        return BeanScope.SINGLETON;
    } else if (context.isPrototype(beanName)) {
        return BeanScope.PROTOTYPE;
    } else {
        //TODO log warning and proceed
        throw new RuntimeException("Unsupported bean scope");
    }
}
Example 2
Source File: AbstractUrlHandlerMapping.java    From spring-analysis-note with MIT License 4 votes vote down vote up 
/**
 * Register the specified handler for the given URL path.
 * @param urlPath the URL the bean should be mapped to
 * @param handler the handler instance or handler bean name String
 * (a bean name will automatically be resolved into the corresponding handler bean)
 * @throws BeansException if the handler couldn't be registered
 * @throws IllegalStateException if there is a conflicting handler registered
 */
protected void registerHandler(String urlPath, Object handler) throws BeansException, IllegalStateException {
	Assert.notNull(urlPath, "URL path must not be null");
	Assert.notNull(handler, "Handler object must not be null");
	Object resolvedHandler = handler;

	// Eagerly resolve handler if referencing singleton via name.
	if (!this.lazyInitHandlers && handler instanceof String) {
		String handlerName = (String) handler;
		ApplicationContext applicationContext = obtainApplicationContext();
		if (applicationContext.isSingleton(handlerName)) {
			resolvedHandler = applicationContext.getBean(handlerName);
		}
	}

	Object mappedHandler = this.handlerMap.get(urlPath);
	if (mappedHandler != null) {
		if (mappedHandler != resolvedHandler) {
			throw new IllegalStateException(
					"Cannot map " + getHandlerDescription(handler) + " to URL path [" + urlPath +
					"]: There is already " + getHandlerDescription(mappedHandler) + " mapped.");
		}
	}
	else {
		if (urlPath.equals("/")) {
			if (logger.isTraceEnabled()) {
				logger.trace("Root mapping to " + getHandlerDescription(handler));
			}
			setRootHandler(resolvedHandler);
		}
		else if (urlPath.equals("/*")) {
			if (logger.isTraceEnabled()) {
				logger.trace("Default mapping to " + getHandlerDescription(handler));
			}
			setDefaultHandler(resolvedHandler);
		}
		else {
			this.handlerMap.put(urlPath, resolvedHandler);
			if (logger.isTraceEnabled()) {
				logger.trace("Mapped [" + urlPath + "] onto " + getHandlerDescription(handler));
			}
		}
	}
}
Example 3
Source File: AbstractUrlHandlerMapping.java    From java-technology-stack with MIT License 4 votes vote down vote up 
/**
 * Register the specified handler for the given URL path.
 * @param urlPath the URL the bean should be mapped to
 * @param handler the handler instance or handler bean name String
 * (a bean name will automatically be resolved into the corresponding handler bean)
 * @throws BeansException if the handler couldn't be registered
 * @throws IllegalStateException if there is a conflicting handler registered
 */
protected void registerHandler(String urlPath, Object handler) throws BeansException, IllegalStateException {
	Assert.notNull(urlPath, "URL path must not be null");
	Assert.notNull(handler, "Handler object must not be null");
	Object resolvedHandler = handler;

	// Eagerly resolve handler if referencing singleton via name.
	if (!this.lazyInitHandlers && handler instanceof String) {
		String handlerName = (String) handler;
		ApplicationContext applicationContext = obtainApplicationContext();
		if (applicationContext.isSingleton(handlerName)) {
			resolvedHandler = applicationContext.getBean(handlerName);
		}
	}

	Object mappedHandler = this.handlerMap.get(urlPath);
	if (mappedHandler != null) {
		if (mappedHandler != resolvedHandler) {
			throw new IllegalStateException(
					"Cannot map " + getHandlerDescription(handler) + " to URL path [" + urlPath +
					"]: There is already " + getHandlerDescription(mappedHandler) + " mapped.");
		}
	}
	else {
		if (urlPath.equals("/")) {
			if (logger.isTraceEnabled()) {
				logger.trace("Root mapping to " + getHandlerDescription(handler));
			}
			setRootHandler(resolvedHandler);
		}
		else if (urlPath.equals("/*")) {
			if (logger.isTraceEnabled()) {
				logger.trace("Default mapping to " + getHandlerDescription(handler));
			}
			setDefaultHandler(resolvedHandler);
		}
		else {
			this.handlerMap.put(urlPath, resolvedHandler);
			if (logger.isTraceEnabled()) {
				logger.trace("Mapped [" + urlPath + "] onto " + getHandlerDescription(handler));
			}
		}
	}
}