| Name | Status |
|---|---|
| Build |  |
| BetterCode |
Demo project that explores the difference between spring @Configuration and @Component annotations. Simply put, two application contexts that look exactly the same, just one is annotated with @Component and the with @Configuration behave in totally different way.
/**
* All methods marked as @Bean will be wrapped into a CGLIB wrapper where
* the first time the method is called, all resulting objects will be registered in the spring context
* All further calls just return the bean retrieved from the context
*/
@Configuration
public class MyBeanConfiguration {
/**
* @return the MyBean Singleton instance
*/
@Bean
public MyBean providesMyBean() {
return new MyBean("testBean");
}
/**
* @return the MyBeanConsumer singleton instance with the MyBean singleton instance as a member
*/
@Bean
public MyBeanConsumer providesMyBeanConsumer() {
return new MyBeanConsumer(providesMyBean());
}
}
@Component
public class MyBeanComponent {
/**
*
* @return the MyBean singleton instance
*/
@Bean
public MyBean providesMyBean() {
return new MyBean("testBean");
}
/**
* new MyBeanConsumer(myBean()) just calls a pure java method
* @return the MyBeanConsumer singleton instance with a new allocated MyBean instance different from the bean above
*/
@Bean
public MyBeanConsumer providesMyBeanConsumer() {
return new MyBeanConsumer(providesMyBean());
}
}