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* JBoss, Home of Professional Open Source
* Copyright 2010, Red Hat, Inc., and individual contributors
* by the @authors tag. See the copyright.txt in the distribution for a
* full listing of individual contributors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
* http://www.apache.org/licenses/LICENSE-2.0
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package javax.enterprise.inject.spi;
import java.lang.annotation.Annotation;
import java.lang.reflect.Type;
import java.util.Set;
/**
* Represents a Java program element that can be annotated.
*
* @see java.lang.reflect.AnnotatedElement
*
* @author Gavin King
* @author Pete Muir
* @author Clint Popetz
*
*/
public interface Annotated
{
/**
*
Get the type of the annotated program element.
*
* @return the type of the annotated program element
*/
public Type getBaseType();
/**
* Get all types to which the base type should be considered
* assignable.
*
* @return a set of all types to which the base type should be considered
* assignable
*/
public Set getTypeClosure();
/**
* Get program element annotation of a certain annotation type.
*
* @param the type of the annotation
* @param annotationType the class of the annotation type
* @return the program element annotation of the given annotation type,
* or a null value
*/
public T getAnnotation(Class annotationType);
/**
* Get all annotations of the program element.
*
* @return all annotations of the program element, or an empty set if no
* annotations are present
*/
public Set getAnnotations();
/**
* Determine if the program element has an annotation of a
* certain annotation type.
*
* @param annotationType the annotation type to check for
* @return true if the program element has an annotation of the
* given annotation type, or false otherwise
*/
public boolean isAnnotationPresent(Class annotationType);
}