loading beans from XML (programmatic way) does not work

Question

After loading beans using XmlBeanDefinitionReader's loadBeanDefinitions method , Auto scan feature of spring xml does not work as all the beans mentioned in the xml gets created but the beans which are marked by @Component to auto detect are not created.why Xsd validation is not working ?

code that i am writing is

 XmlBeanDefinitionReader reader = new XmlBeanDefinitionReader(beanDefinitionRegistry);

 reader.setValidationMode(XmlBeanDefinitionReader.VALIDATION_XSD);

 reader.loadBeanDefinitions(resource);

 ((ConfigurableApplicationContext) context).refresh(); 

Please help, thanks in advance.