io.druid.guice.annotations

Annotation Type ExtensionPoint

@Target(value=TYPE)
 @Retention(value=SOURCE)
public @interface ExtensionPoint

Signifies that the annotated type is an extension point. Extension points are interfaces or non-final classes that may be subclassed in extensions in order to add functionality to Druid. Extension points may change in breaking ways only between major Druid release lines (e.g. 0.10.x -> 0.11.0), but otherwise must remain stable. Extension points may change at any time in non-breaking ways, however, such as by adding new default methods to an interface. All public and protected fields, methods, and constructors of annotated classes and interfaces are considered stable in this sense. If a class is not annotated, but an individual field, method, or constructor is annotated, then only that particular field, method, or constructor is considered an extension API. Extension points are all considered public APIs in the sense of PublicApi, even if not explicitly annotated as such. Note that there are number of injectable interfaces that are not annotated with ExtensionPoint. You may still extend these interfaces in extensions, but your extension may need to be recompiled even for a minor update of Druid.

See Also:

PublicApi