Package com.mastfrog.acteur.preconditions

Class PageAnnotationHandler

java.lang.Object

com.mastfrog.acteur.preconditions.PageAnnotationHandler

Direct Known Subclasses:

BuiltInPageAnnotationHandler

public abstract class PageAnnotationHandler
extends Object

Mechanism for pluggable handling of annotations - this way an application can create its own annotations which imply that some acteurs are to be added to a page, and actually add them.

To use, implement your PageAnnotationHandler, and bind it as an eager singleton so it is instantiated and registered on startup.

Note: If you need to guarantee your handlers run *after* the built in ones (for example, your code assumes authentication has already happened and a User object is available for injectio), annotate your implementation with &064;Ordered with a value greater than 0.

Author:

Tim Boudreau

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static final class	PageAnnotationHandler.Registry	Registry of PageAnnotationHandlers

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	PageAnnotationHandler(PageAnnotationHandler.Registry registry, Class<?>... annotationTypes)

Method Summary

Modifier and Type	Method	Description
abstract <T extends Page> boolean	processAnnotations(T page, List<? super Acteur> addTo)
protected final Set<Class<? extends Annotation>>	types()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

PageAnnotationHandler

protected PageAnnotationHandler(PageAnnotationHandler.Registry registry,
 Class<?>... annotationTypes)

Method Details

processAnnotations

public abstract <T extends Page> boolean processAnnotations(T page,
 List<? super Acteur> addTo)

types

protected final Set<Class<? extends Annotation>> types()