src/share/classes/java/security/Guard.java

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   1 /*
   2  * Copyright (c) 1997, 1998, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 package java.security;
  27 
  28 /**
  29  * <p> This interface represents a guard, which is an object that is used
  30  * to protect access to another object.
  31  *
  32  * <p>This interface contains a single method, <code>checkGuard</code>,
  33  * with a single <code>object</code> argument. <code>checkGuard</code> is
  34  * invoked (by the GuardedObject <code>getObject</code> method)
  35  * to determine whether or not to allow access to the object.
  36  *
  37  * @see GuardedObject
  38  *
  39  * @author Roland Schemers
  40  * @author Li Gong
  41  */
  42 
  43 public interface Guard {
  44 
  45     /**
  46      * Determines whether or not to allow access to the guarded object
  47      * <code>object</code>. Returns silently if access is allowed.
  48      * Otherwise, throws a SecurityException.
  49      *
  50      * @param object the object being protected by the guard.
  51      *
  52      * @exception SecurityException if access is denied.
  53      *
  54      */
  55     void checkGuard(Object object) throws SecurityException;
  56 }
   1 /*
   2  * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 package java.security;
  27 
  28 /**
  29  * <p> This interface represents a guard, which is an object that is used
  30  * to protect access to another object.
  31  *
  32  * <p>This interface contains a single method, {@code checkGuard},
  33  * with a single {@code object} argument. {@code checkGuard} is
  34  * invoked (by the GuardedObject {@code getObject} method)
  35  * to determine whether or not to allow access to the object.
  36  *
  37  * @see GuardedObject
  38  *
  39  * @author Roland Schemers
  40  * @author Li Gong
  41  */
  42 
  43 public interface Guard {
  44 
  45     /**
  46      * Determines whether or not to allow access to the guarded object
  47      * {@code object}. Returns silently if access is allowed.
  48      * Otherwise, throws a SecurityException.
  49      *
  50      * @param object the object being protected by the guard.
  51      *
  52      * @exception SecurityException if access is denied.
  53      *
  54      */
  55     void checkGuard(Object object) throws SecurityException;
  56 }