org.metawidget.inspector.impl.Trait Maven / Gradle / Ivy
// Metawidget
//
// This file is dual licensed under both the LGPL
// (http://www.gnu.org/licenses/lgpl-2.1.html) and the EPL
// (http://www.eclipse.org/org/documents/epl-v10.php). As a
// recipient of Metawidget, you may choose to receive it under either
// the LGPL or the EPL.
//
// Commercial licenses are also available. See http://metawidget.org
// for details.
package org.metawidget.inspector.impl;
import java.lang.annotation.Annotation;
/**
* Interface common to both org.metawidget.inspector.impl.propertystyle.Property
* (domain object properties) and org.metawidget.inspector.impl.actionstyle.Action
* (domain object actions).
*
* This is essentially java.lang.reflect.AnnotatedElement, but simplified with fewer
* methods.
*
* @author Richard Kennard
*/
public interface Trait {
//
// Methods
//
String getName();
/**
* Returns this element's annotation for the specified type if such an annotation is present,
* else null.
*
* Note: for subclasses, whether anything is returned for annotations defined by the superclass
* is decided by the java.lang.annotation.Inherited annotation.
*/
T getAnnotation( Class annotation );
/**
* Returns true if an annotation for the specified type is present on this element, else false.
* This method is designed primarily for convenient access to marker annotations.
*
* Note: for subclasses, whether true is returned for annotations defined by the superclass is
* decided by the java.lang.annotation.Inherited annotation.
*/
boolean isAnnotationPresent( Class annotation );
}