001/*
002 * oauth2-oidc-sdk
003 *
004 * Copyright 2012-2016, Connect2id Ltd and contributors.
005 *
006 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use
007 * this file except in compliance with the License. You may obtain a copy of the
008 * License at
009 *
010 *    http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing, software distributed
013 * under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
014 * CONDITIONS OF ANY KIND, either express or implied. See the License for the
015 * specific language governing permissions and limitations under the License.
016 */
017
018package com.nimbusds.openid.connect.sdk;
019
020
021import com.nimbusds.oauth2.sdk.ParseException;
022
023
024/**
025 * Enumeration of the subject identifier types.
026 *
027 * <p>Related specifications:
028 *
029 * <ul>
030 *     <li>OpenID Connect Core 1.0, section 8.
031 * </ul>
032 */
033public enum SubjectType {
034
035
036        /**
037         * Pairwise.
038         */
039        PAIRWISE,
040        
041        
042        /**
043         * Public.
044         */
045        PUBLIC;
046        
047        
048        /**
049         * Returns the string representation of this subject identifier 
050         * type.
051         *
052         * @return The string representation of this subject identifier
053         *         type.
054         */
055        public String toString() {
056
057                return super.toString().toLowerCase();
058        }
059
060
061        /**
062         * Parses a subject identifier type.
063         *
064         * @param s The string to parse.
065         *
066         * @return The subject identifier type.
067         *
068         * @throws ParseException If the parsed string is {@code null} or
069         *                        doesn't match a subject identifier type.
070         */
071        public static SubjectType parse(final String s)
072                throws ParseException {
073
074                if (s == null || s.trim().isEmpty())
075                        throw new ParseException("Null or empty subject type string");
076
077                if ("pairwise".equals(s)) {
078
079                        return PAIRWISE;
080
081                } else if ("public".equals(s)) {
082
083                        return PUBLIC;
084
085                } else {
086
087                        throw new ParseException("Unknown subject type: " + s);
088                }
089        }
090}