private String getBeanNameOfClass()

in wicket-spring/src/main/java/org/apache/wicket/spring/injection/annot/AnnotProxyFieldValueFactory.java [225:296]
63 lines of code
15 McCabe index (conditional complexity)

	private String getBeanNameOfClass(final ApplicationContext ctx, final Class<?> clazz,
		final ResolvableType resolvableType, String fieldName)
	{
		// get the list of all possible matching beans
		List<String> names = new ArrayList<>(
			Arrays.asList(BeanFactoryUtils.beanNamesForTypeIncludingAncestors(ctx, resolvableType)));

		// filter out beans that are not candidates for autowiring
		if (ctx instanceof AbstractApplicationContext)
		{
			Iterator<String> it = names.iterator();
			while (it.hasNext())
			{
				final String possibility = it.next();
				BeanDefinition beanDef = getBeanDefinition(
					((AbstractApplicationContext)ctx).getBeanFactory(), possibility);
				if (BeanFactoryUtils.isFactoryDereference(possibility) ||
					possibility.startsWith("scopedTarget.") ||
					(beanDef != null && !beanDef.isAutowireCandidate()))
				{
					it.remove();
				}
			}
		}

		if (names.size() > 1)
		{
			if (ctx instanceof AbstractApplicationContext)
			{
				List<String> primaries = new ArrayList<>();
				for (String name : names)
				{
					BeanDefinition beanDef = getBeanDefinition(
						((AbstractApplicationContext)ctx).getBeanFactory(), name);
					if (beanDef instanceof AbstractBeanDefinition)
					{
						if (beanDef.isPrimary())
						{
							primaries.add(name);
						}
					}
				}
				if (primaries.size() == 1)
				{
					return primaries.get(0);
				}
			}
			
			//use field name to find a match
			int nameIndex = names.indexOf(fieldName);
			
			if (nameIndex > -1)
			{
				return names.get(nameIndex);
			}

			StringBuilder msg = new StringBuilder();
			msg.append("More than one bean of type [");
			msg.append(clazz.getName());
			msg.append("] found, you have to specify the name of the bean ");
			msg.append("(@SpringBean(name=\"foo\")) or (@Named(\"foo\") if using @jakarta.inject classes) in order to resolve this conflict. ");
			msg.append("Matched beans: ");
			msg.append(Strings.join(",", names));
			throw new IllegalStateException(msg.toString());
		}
		else if(!names.isEmpty())
		{
			return names.get(0);
		}
		
		return null;
	}