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I've got a pretty simple abstract class
public abstract class AbstractServiceActions { @Autowired protected DatabaseModel dbModel; protected User user; protected boolean complete; protected String serviceResult; public AbstractServiceActions(User user) { this.user = user; this.serviceResult = ""; } public abstract String doAction(); } Now you can see, I'm trying to autowire the DatabaseModel. But in my extended class I only recieve null for the dbModel.
@Component public class CreateDatabaseAction extends AbstractServiceActions { .... } Question: Am I trying something impossible here?
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We can't use @Autowired on a constructor of an abstract class. Spring doesn't evaluate the @Autowired annotation on a constructor of an abstract class. The subclass should provide the necessary arguments to the super constructor.
You don't. You only declare the beans which have a concrete subclass of that abstract class.
Annotating an interface with @Component is common for Spring classes, particularly for some Spring stereotype annotations : package org. springframework.
In an application, the business logic resides within the service layer so we use the @Service Annotation to indicate that a class belongs to that layer. It is also a specialization of @Component Annotation like the @Repository Annotation.
Your setup seems fine. The reason perhaps lies elsewhere. Maybe you are instantiating the class with new CreateDatabaseAction(), rather than letting spring do this.
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