66 lines
2.7 KiB
Java
66 lines
2.7 KiB
Java
/*
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* Copyright (c) 1999, 2013, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package com.sun.security.auth;
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/**
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* An object that implements the <code>java.security.Principal</code>
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* interface typically also implements this interface to provide
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* a means for comparing that object to a specified <code>Subject</code>.
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*
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* <p> The comparison is achieved via the <code>implies</code> method.
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* The implementation of the <code>implies</code> method determines
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* whether this object "implies" the specified <code>Subject</code>.
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* One example application of this method may be for
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* a "group" object to imply a particular <code>Subject</code>
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* if that <code>Subject</code> belongs to the group.
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* Another example application of this method would be for
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* "role" object to imply a particular <code>Subject</code>
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* if that <code>Subject</code> is currently acting in that role.
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*
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* <p> Although classes that implement this interface typically
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* also implement the <code>java.security.Principal</code> interface,
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* it is not required. In other words, classes may implement the
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* <code>java.security.Principal</code> interface by itself,
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* the <code>PrincipalComparator</code> interface by itself,
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* or both at the same time.
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*
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* @see java.security.Principal
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* @see javax.security.auth.Subject
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*/
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@jdk.Exported
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public interface PrincipalComparator {
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/**
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* Check if the specified <code>Subject</code> is implied by
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* this object.
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*
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* <p>
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*
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* @return true if the specified <code>Subject</code> is implied by
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* this object, or false otherwise.
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*/
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boolean implies(javax.security.auth.Subject subject);
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}
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