Many Sling projects want to be able to create model objects - POJOs which are automatically mapped from Sling objects, typically resources, but also request objects. Sometimes these POJOs need OSGi services as well.

...

@Model(adaptables=SlingHttpServletRequest.class)
public interface MyModel {
 
    @Inject @Projection("resource")
    String getPropertyName();
} 

Annotation Reference

• @Model - declares a model class or interface
  
• @Inject - marks a field or method as injectable
• @Named - declare a name for the injection (otherwise, defaults based on field or method name).
  
• @Optional - marks a field or method injection as optional
  
• @Source - explictly tie an injected field or method to a particular injector (by name). Can also be on other annotations.
  
• @Filter - an OSGi service filter
  
• @PostConstruct - methods to call upon model option creation (only for model classes)
  
• @Projection - project a JavaBean property as the adaptable.
  
• @Default - set default values for a field or method

Available Injectors

• Value Map (valuemap) - adapt the adaptable to a ValueMap and retrive properties.
• OSGI Services (osgi-services) - lookup services based on class name (including List and Array support). Effectively ignores name.
• Script Bindings (script-bindings) - gets script bindings from request and looks up by name.
• Child Resources (child-resources) - gets child resources by name.
• Request Attributes (request-atttributes) - gets request attributes
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