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Diffstat (limited to 'libjava/java/security/GuardedObject.java')
-rw-r--r-- | libjava/java/security/GuardedObject.java | 121 |
1 files changed, 0 insertions, 121 deletions
diff --git a/libjava/java/security/GuardedObject.java b/libjava/java/security/GuardedObject.java deleted file mode 100644 index 5ca0883..0000000 --- a/libjava/java/security/GuardedObject.java +++ /dev/null @@ -1,121 +0,0 @@ -/* GuardedObject.java -- An object protected by a Guard - Copyright (C) 1998, 2002, 2004, 2005 Free Software Foundation, Inc. - -This file is part of GNU Classpath. - -GNU Classpath is free software; you can redistribute it and/or modify -it under the terms of the GNU General Public License as published by -the Free Software Foundation; either version 2, or (at your option) -any later version. - -GNU Classpath 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 for more details. - -You should have received a copy of the GNU General Public License -along with GNU Classpath; see the file COPYING. If not, write to the -Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA -02110-1301 USA. - -Linking this library statically or dynamically with other modules is -making a combined work based on this library. Thus, the terms and -conditions of the GNU General Public License cover the whole -combination. - -As a special exception, the copyright holders of this library give you -permission to link this library with independent modules to produce an -executable, regardless of the license terms of these independent -modules, and to copy and distribute the resulting executable under -terms of your choice, provided that you also meet, for each linked -independent module, the terms and conditions of the license of that -module. An independent module is a module which is not derived from -or based on this library. If you modify this library, you may extend -this exception to your version of the library, but you are not -obligated to do so. If you do not wish to do so, delete this -exception statement from your version. */ - - -package java.security; - -import java.io.IOException; -import java.io.ObjectOutputStream; -import java.io.Serializable; - -/** - * This class is an object that is guarded by a <code>Guard</code> object. - * The object that is being guarded is retrieved by a call to the only - * method in this class - <code>getObject</code>. That method returns the - * guarded <code>Object</code> after first checking with the - * <code>Guard</code>. If the <code>Guard</code> disallows access, an - * exception will be thrown. - * - * @author Aaron M. Renn (arenn@urbanophile.com) - * @since 1.1 - * @status updated to 1.4 - */ -public class GuardedObject implements Serializable -{ - /** - * Compatible with JDK 1.1+. - */ - private static final long serialVersionUID = -5240450096227834308L; - - /** - * This is the Guard that is protecting the object. - * - * @serial the guard - */ - private final Guard guard; - - /** - * This is the object that is being guarded. - * - * @serial the protected object - */ - private final Object object; - - /** - * This method initializes a new instance of <code>GuardedObject</code> - * that protects the specified <code>Object</code> using the specified - * <code>Guard</code>. A null guard means there are no restrictions on - * accessing the object. - * - * @param object the <code>Object</code> to guard - * @param guard the <code>Guard</code> that is protecting the object - */ - public GuardedObject(Object object, Guard guard) - { - this.object = object; - this.guard = guard; - } - - /** - * This method first call the <code>checkGuard</code> method on the - * <code>Guard</code> object protecting the guarded object. If the - * <code>Guard</code> disallows access, an exception is thrown, otherwise - * the <code>Object</code> is returned. - * - * @return The object being guarded - * @throws SecurityException if access is denied - */ - public Object getObject() - { - if (guard != null) - guard.checkGuard(object); - return object; - } - - /** - * Ensures that serialization is legal, by checking the guard. - * - * @param s the stream to write to - * @throws IOException if the underlying stream fails - */ - private void writeObject(ObjectOutputStream s) throws IOException - { - if (guard != null) - guard.checkGuard(object); - s.defaultWriteObject(); - } -} // class GuardedObject |