1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/rt/emul/mini/src/main/java/java/lang/reflect/AccessibleObject.java Tue Feb 26 16:54:16 2013 +0100
1.3 @@ -0,0 +1,167 @@
1.4 +/*
1.5 + * Copyright (c) 1997, 2008, Oracle and/or its affiliates. All rights reserved.
1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.7 + *
1.8 + * This code is free software; you can redistribute it and/or modify it
1.9 + * under the terms of the GNU General Public License version 2 only, as
1.10 + * published by the Free Software Foundation. Oracle designates this
1.11 + * particular file as subject to the "Classpath" exception as provided
1.12 + * by Oracle in the LICENSE file that accompanied this code.
1.13 + *
1.14 + * This code is distributed in the hope that it will be useful, but WITHOUT
1.15 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.16 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.17 + * version 2 for more details (a copy is included in the LICENSE file that
1.18 + * accompanied this code).
1.19 + *
1.20 + * You should have received a copy of the GNU General Public License version
1.21 + * 2 along with this work; if not, write to the Free Software Foundation,
1.22 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.23 + *
1.24 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
1.25 + * or visit www.oracle.com if you need additional information or have any
1.26 + * questions.
1.27 + */
1.28 +
1.29 +package java.lang.reflect;
1.30 +
1.31 +import java.lang.annotation.Annotation;
1.32 +
1.33 +/**
1.34 + * The AccessibleObject class is the base class for Field, Method and
1.35 + * Constructor objects. It provides the ability to flag a reflected
1.36 + * object as suppressing default Java language access control checks
1.37 + * when it is used. The access checks--for public, default (package)
1.38 + * access, protected, and private members--are performed when Fields,
1.39 + * Methods or Constructors are used to set or get fields, to invoke
1.40 + * methods, or to create and initialize new instances of classes,
1.41 + * respectively.
1.42 + *
1.43 + * <p>Setting the {@code accessible} flag in a reflected object
1.44 + * permits sophisticated applications with sufficient privilege, such
1.45 + * as Java Object Serialization or other persistence mechanisms, to
1.46 + * manipulate objects in a manner that would normally be prohibited.
1.47 + *
1.48 + * <p>By default, a reflected object is <em>not</em> accessible.
1.49 + *
1.50 + * @see Field
1.51 + * @see Method
1.52 + * @see Constructor
1.53 + * @see ReflectPermission
1.54 + *
1.55 + * @since 1.2
1.56 + */
1.57 +public class AccessibleObject implements AnnotatedElement {
1.58 +
1.59 + /**
1.60 + * Convenience method to set the {@code accessible} flag for an
1.61 + * array of objects with a single security check (for efficiency).
1.62 + *
1.63 + * <p>First, if there is a security manager, its
1.64 + * {@code checkPermission} method is called with a
1.65 + * {@code ReflectPermission("suppressAccessChecks")} permission.
1.66 + *
1.67 + * <p>A {@code SecurityException} is raised if {@code flag} is
1.68 + * {@code true} but accessibility of any of the elements of the input
1.69 + * {@code array} may not be changed (for example, if the element
1.70 + * object is a {@link Constructor} object for the class {@link
1.71 + * java.lang.Class}). In the event of such a SecurityException, the
1.72 + * accessibility of objects is set to {@code flag} for array elements
1.73 + * upto (and excluding) the element for which the exception occurred; the
1.74 + * accessibility of elements beyond (and including) the element for which
1.75 + * the exception occurred is unchanged.
1.76 + *
1.77 + * @param array the array of AccessibleObjects
1.78 + * @param flag the new value for the {@code accessible} flag
1.79 + * in each object
1.80 + * @throws SecurityException if the request is denied.
1.81 + * @see SecurityManager#checkPermission
1.82 + * @see java.lang.RuntimePermission
1.83 + */
1.84 + public static void setAccessible(AccessibleObject[] array, boolean flag)
1.85 + throws SecurityException {
1.86 + throw new SecurityException();
1.87 + }
1.88 +
1.89 + /**
1.90 + * Set the {@code accessible} flag for this object to
1.91 + * the indicated boolean value. A value of {@code true} indicates that
1.92 + * the reflected object should suppress Java language access
1.93 + * checking when it is used. A value of {@code false} indicates
1.94 + * that the reflected object should enforce Java language access checks.
1.95 + *
1.96 + * <p>First, if there is a security manager, its
1.97 + * {@code checkPermission} method is called with a
1.98 + * {@code ReflectPermission("suppressAccessChecks")} permission.
1.99 + *
1.100 + * <p>A {@code SecurityException} is raised if {@code flag} is
1.101 + * {@code true} but accessibility of this object may not be changed
1.102 + * (for example, if this element object is a {@link Constructor} object for
1.103 + * the class {@link java.lang.Class}).
1.104 + *
1.105 + * <p>A {@code SecurityException} is raised if this object is a {@link
1.106 + * java.lang.reflect.Constructor} object for the class
1.107 + * {@code java.lang.Class}, and {@code flag} is true.
1.108 + *
1.109 + * @param flag the new value for the {@code accessible} flag
1.110 + * @throws SecurityException if the request is denied.
1.111 + * @see SecurityManager#checkPermission
1.112 + * @see java.lang.RuntimePermission
1.113 + */
1.114 + public void setAccessible(boolean flag) throws SecurityException {
1.115 + throw new SecurityException();
1.116 + }
1.117 +
1.118 + /**
1.119 + * Get the value of the {@code accessible} flag for this object.
1.120 + *
1.121 + * @return the value of the object's {@code accessible} flag
1.122 + */
1.123 + public boolean isAccessible() {
1.124 + return override;
1.125 + }
1.126 +
1.127 + /**
1.128 + * Constructor: only used by the Java Virtual Machine.
1.129 + */
1.130 + protected AccessibleObject() {}
1.131 +
1.132 + // Indicates whether language-level access checks are overridden
1.133 + // by this object. Initializes to "false". This field is used by
1.134 + // Field, Method, and Constructor.
1.135 + //
1.136 + // NOTE: for security purposes, this field must not be visible
1.137 + // outside this package.
1.138 + boolean override;
1.139 +
1.140 + /**
1.141 + * @throws NullPointerException {@inheritDoc}
1.142 + * @since 1.5
1.143 + */
1.144 + public <T extends Annotation> T getAnnotation(Class<T> annotationClass) {
1.145 + throw new AssertionError("All subclasses should override this method");
1.146 + }
1.147 +
1.148 + /**
1.149 + * @throws NullPointerException {@inheritDoc}
1.150 + * @since 1.5
1.151 + */
1.152 + public boolean isAnnotationPresent(
1.153 + Class<? extends Annotation> annotationClass) {
1.154 + return getAnnotation(annotationClass) != null;
1.155 + }
1.156 +
1.157 + /**
1.158 + * @since 1.5
1.159 + */
1.160 + public Annotation[] getAnnotations() {
1.161 + return getDeclaredAnnotations();
1.162 + }
1.163 +
1.164 + /**
1.165 + * @since 1.5
1.166 + */
1.167 + public Annotation[] getDeclaredAnnotations() {
1.168 + throw new AssertionError("All subclasses should override this method");
1.169 + }
1.170 +}