diff -r 000000000000 -r 9b0fbf4ec230 emul/src/main/java/java/lang/reflect/AnnotatedElement.java --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/emul/src/main/java/java/lang/reflect/AnnotatedElement.java Tue Dec 04 14:08:19 2012 +0100 @@ -0,0 +1,112 @@ +/* + * Copyright (c) 2003, 2005, Oracle and/or its affiliates. All rights reserved. + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * This code is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 only, as + * published by the Free Software Foundation. Oracle designates this + * particular file as subject to the "Classpath" exception as provided + * by Oracle in the LICENSE file that accompanied this code. + * + * This code 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 General Public License + * version 2 for more details (a copy is included in the LICENSE file that + * accompanied this code). + * + * You should have received a copy of the GNU General Public License version + * 2 along with this work; if not, write to the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA + * or visit www.oracle.com if you need additional information or have any + * questions. + */ + +package java.lang.reflect; + +import java.lang.annotation.Annotation; + +/** + * Represents an annotated element of the program currently running in this + * VM. This interface allows annotations to be read reflectively. All + * annotations returned by methods in this interface are immutable and + * serializable. It is permissible for the caller to modify the + * arrays returned by accessors for array-valued enum members; it will + * have no affect on the arrays returned to other callers. + * + *

If an annotation returned by a method in this interface contains + * (directly or indirectly) a {@link Class}-valued member referring to + * a class that is not accessible in this VM, attempting to read the class + * by calling the relevant Class-returning method on the returned annotation + * will result in a {@link TypeNotPresentException}. + * + *

Similarly, attempting to read an enum-valued member will result in + * a {@link EnumConstantNotPresentException} if the enum constant in the + * annotation is no longer present in the enum type. + * + *

Finally, Attempting to read a member whose definition has evolved + * incompatibly will result in a {@link + * java.lang.annotation.AnnotationTypeMismatchException} or an + * {@link java.lang.annotation.IncompleteAnnotationException}. + * + * @see java.lang.EnumConstantNotPresentException + * @see java.lang.TypeNotPresentException + * @see java.lang.annotation.AnnotationFormatError + * @see java.lang.annotation.AnnotationTypeMismatchException + * @see java.lang.annotation.IncompleteAnnotationException + * @since 1.5 + * @author Josh Bloch + */ +public interface AnnotatedElement { + /** + * 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. + * + * @param annotationClass the Class object corresponding to the + * annotation type + * @return true if an annotation for the specified annotation + * type is present on this element, else false + * @throws NullPointerException if the given annotation class is null + * @since 1.5 + */ + boolean isAnnotationPresent(Class annotationClass); + + /** + * Returns this element's annotation for the specified type if + * such an annotation is present, else null. + * + * @param annotationClass the Class object corresponding to the + * annotation type + * @return this element's annotation for the specified annotation type if + * present on this element, else null + * @throws NullPointerException if the given annotation class is null + * @since 1.5 + */ + T getAnnotation(Class annotationClass); + + /** + * Returns all annotations present on this element. (Returns an array + * of length zero if this element has no annotations.) The caller of + * this method is free to modify the returned array; it will have no + * effect on the arrays returned to other callers. + * + * @return all annotations present on this element + * @since 1.5 + */ + Annotation[] getAnnotations(); + + /** + * Returns all annotations that are directly present on this + * element. Unlike the other methods in this interface, this method + * ignores inherited annotations. (Returns an array of length zero if + * no annotations are directly present on this element.) The caller of + * this method is free to modify the returned array; it will have no + * effect on the arrays returned to other callers. + * + * @return All annotations directly present on this element + * @since 1.5 + */ + Annotation[] getDeclaredAnnotations(); +}