| /* |
| * Copyright (c) 2015, 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 com.sun.jmx.mbeanserver; |
| |
| import java.lang.reflect.Constructor; |
| import java.lang.reflect.Method; |
| import jdk.internal.misc.JavaBeansAccess; |
| import jdk.internal.misc.SharedSecrets; |
| |
| /** |
| * A centralized place for gaining access to java.beans related functionality - |
| * if available. |
| */ |
| class JavaBeansAccessor { |
| static { |
| // ensure that java.beans.Introspector is initialized (if present) |
| // it will fill in the SharedSecrets |
| try { |
| Class.forName("java.beans.Introspector", true, |
| JavaBeansAccessor.class.getClassLoader()); |
| } catch (ClassNotFoundException ignore) { } |
| } |
| |
| private static JavaBeansAccess getJavaBeansAccess() { |
| return SharedSecrets.getJavaBeansAccess(); |
| } |
| |
| static boolean isAvailable() { |
| return getJavaBeansAccess() != null; |
| } |
| |
| /** |
| * Returns the getter method for a property of the given name |
| * @param clazz The JavaBeans class |
| * @param property The property name |
| * @return The resolved property getter name or null |
| * @throws Exception |
| */ |
| static Method getReadMethod(Class<?> clazz, String property) throws Exception { |
| JavaBeansAccess jba = getJavaBeansAccess(); |
| return jba != null ? jba.getReadMethod(clazz, property) : null; |
| } |
| |
| /** |
| * Return the <b>value</b> attribute of the associated |
| * <code>@ConstructorProperties</code> annotation if that is present. |
| * @param ctr The constructor to extract the annotation value from |
| * @return The {@code value} attribute of the <code>@ConstructorProperties</code> |
| * annotation or {@code null} if the constructor is not annotated by |
| * this annotation or the annotation is not accessible. |
| */ |
| static String[] getConstructorPropertiesValue(Constructor<?> ctr) { |
| JavaBeansAccess jba = getJavaBeansAccess(); |
| return jba != null ? jba.getConstructorPropertiesValue(ctr) : null; |
| } |
| } |