static T toClass()

in pulsar-client-reactive-jackson/src/main/java/org/apache/pulsar/reactive/client/jackson/ConverterUtils.java [46:77]

31 lines of code
6 McCabe index (conditional complexity)


	static <T> T toClass(ClassConf conf) {
		if (conf == null) {
			return null;
		}
		Class<?> klass;
		try {
			klass = loadClass(conf.getClassName(), Thread.currentThread().getContextClassLoader());
		}
		catch (ClassNotFoundException ex) {
			throw new RuntimeException(String.format("Failed to load class %s", conf.getClassName()));
		}

		try {
			if (conf.getArgs() != null) {
				Constructor<?> ctor = klass.getConstructor(Map.class);
				return (T) ctor.newInstance(conf.getArgs());
			}
			else {
				Constructor<?> ctor = klass.getConstructor();
				return (T) ctor.newInstance();
			}
		}
		catch (NoSuchMethodException ex) {
			throw new RuntimeException(
					String.format("Class %s does not have a no-arg constructor or a constructor that accepts map",
							klass.getName()),
					ex);
		}
		catch (IllegalAccessException | InstantiationException | InvocationTargetException ex) {
			throw new RuntimeException(String.format("Failed to create instance for %s", klass.getName()), ex);
		}
	}