Registers Spring bean programmatically

[ray.frid]

Hi,
I am using Spring3.1 on standalone env.

I am trying to take a simple Pojo and register it as Spring bean programmatically.

I read about using DefaultListableBeanFactory or GenericBeanDefinition. but still couldn't find my way.

also I want to avoid memory leaks so I better be careful with those objects.

So let's say I have this pojo:

PropertiesDTO propertiesDTO = new PropertiesDTO();
		propertiesDTO .setMyProperty("1");

		MyObject myObject = new MyObject ();
		myObject.setPropertiesDTO(oropertiesDTO);

and I want to add myObject to the spring context.

* Ive put ApplicationContext instance in a Singleton class so I can get instance of it anywhere. maybe that could serve my purpose some how.

Thanks for your help,
ray.

[objectamit]

I think this talks about exactly the same thing that you're trying to achieve programmatically.

[ray.frid]

Yes.. I looked at this post and it didnt work.

I tried to register the bean in two ways and I dont get how I suppose to connect my pojo instance into it:


This is the bean:

public class SessionMDB
{

	@PostConstruct
	public void init() throws Exception
	{
		System.out.println("I am alive");
	}
}

and this is how I am trying to create new instance of it and register it as a spring bean:

First way:

SessionMDB sessionMDB = new SessionMDB();
ClassPathXmlApplicationContext context = ApplicationContextSingleton.getApplicationContext();

		GenericBeanDefinition beanDef = new GenericBeanDefinition();
		beanDef.setBeanClass(SessionMDB.class);
		context.getBeanFactory().registerSingleton("SessionMDB", beanDef);

second way:

SessionMDB sessionMDB = new SessionMDB();
ClassPathXmlApplicationContext context = ApplicationContextSingleton.getApplicationContext();
	DefaultListableBeanFactory beanFactory = (DefaultListableBeanFactory) context.getBeanFactory();
		beanFactory.registerBeanDefinition("SessionMDB", BeanDefinitionBuilder.rootBeanDefinition(SessionMDB.class.getName()).getBeanDefinition());

This is my ApplicationContextSingleton class:

public class ApplicationContextSingleton
{
	static ClassPathXmlApplicationContext context;

	private ApplicationContextSingleton()
	{
	}

	public static ClassPathXmlApplicationContext getApplicationContext()
	{
		if (context == null)
		{
			context = new ClassPathXmlApplicationContext(Constants.APPLICATION_CONTEXT_XML);

		}
		return context;
	}

}

any idea?

thanks,
ray.