org.metawidget.inspector.impl.Trait Maven / Gradle / Ivy
// Metawidget
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
package org.metawidget.inspector.impl;
import java.lang.annotation.Annotation;
/**
* Interface common to both org.metawidget.inspector.impl.propertystyle.Property
* (business object properties) and org.metawidget.inspector.impl.actionstyle.Action
* (business object actions).
*
* This is essentially java.lang.reflect.AnnotatedElement from Java 5, but simplified
* with fewer methods and duplicated so that we don't get a NoClassDefError under 1.4.
*
* @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 );
}