/*
 * 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.
/** * 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
Params:
  • clazz – The JavaBeans class
  • property – The property name
Throws:
Returns:The resolved property getter name or 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 value attribute of the associated @ConstructorProperties annotation if that is present.
Params:
  • ctr – The constructor to extract the annotation value from
Returns:The value attribute of the @ConstructorProperties annotation or null if the constructor is not annotated by this annotation or the annotation is not accessible.
/** * 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; } }