001    /*
002     * Licensed to the Apache Software Foundation (ASF) under one
003     * or more contributor license agreements.  See the NOTICE file
004     * distributed with this work for additional information
005     * regarding copyright ownership.  The ASF licenses this file
006     * to you under the Apache License, Version 2.0 (the
007     * "License"); you may not use this file except in compliance
008     * with the License.  You may obtain a copy of the License at
009     *
010     *  http://www.apache.org/licenses/LICENSE-2.0
011     *
012     * Unless required by applicable law or agreed to in writing,
013     * software distributed under the License is distributed on an
014     * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
015     * KIND, either express or implied.  See the License for the
016     * specific language governing permissions and limitations
017     * under the License.
018     */
019    
020    
021    package org.apache.geronimo.security.jacc;
022    
023    import javax.security.auth.Subject;
024    
025    /**
026     * @version $Rev: 706640 $ $Date: 2008-10-21 14:44:05 +0000 (Tue, 21 Oct 2008) $
027     */
028    public interface RunAsSource {
029        RunAsSource NULL = new RunAsSource() {
030    
031            public Subject getDefaultSubject() {
032                return null;
033            }
034    
035            public Subject getSubjectForRole(String role) {
036                return null;
037            }
038        };
039    
040        Subject getDefaultSubject();
041    
042        Subject getSubjectForRole(String role);
043    }