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+/* GuardedObject.java -- An object protected by a Guard
+ Copyright (C) 1998 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., 59 Temple Place, Suite 330, Boston, MA
+02111-1307 USA.
+
+As a special exception, if you link this library with other files to
+produce an executable, this library does not by itself cause the
+resulting executable to be covered by the GNU General Public License.
+This exception does not however invalidate any other reasons why the
+executable file might be covered by the GNU General Public License. */
+
+package java.security;
+
+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.
+ *
+ * @version 0.0
+ *
+ * @author Aaron M. Renn (arenn@urbanophile.com)
+ */
+public class GuardedObject implements Serializable
+{
+ /**
+ * This is the Guard that is protecting the object.
+ */
+ private Guard guard;
+
+ /**
+ * This is the object that is being guarded.
+ */
+ private 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>
+ *
+ * @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
+ *
+ * @exception SecurityException If the <code>Guard</code> disallows access to the object.
+ */
+ public Object getObject() throws SecurityException
+ {
+ guard.checkGuard(object);
+ return (object);
+ }
+}