1 /* 2 * ==================================================================== 3 * Licensed to the Apache Software Foundation (ASF) under one 4 * or more contributor license agreements. See the NOTICE file 5 * distributed with this work for additional information 6 * regarding copyright ownership. The ASF licenses this file 7 * to you under the Apache License, Version 2.0 (the 8 * "License"); you may not use this file except in compliance 9 * with the License. You may obtain a copy of the License at 10 * 11 * http://www.apache.org/licenses/LICENSE-2.0 12 * 13 * Unless required by applicable law or agreed to in writing, 14 * software distributed under the License is distributed on an 15 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 16 * KIND, either express or implied. See the License for the 17 * specific language governing permissions and limitations 18 * under the License. 19 * ==================================================================== 20 * 21 * This software consists of voluntary contributions made by many 22 * individuals on behalf of the Apache Software Foundation. For more 23 * information on the Apache Software Foundation, please see 24 * <http://www.apache.org/>. 25 * 26 */ 27 package org.apache.http.nio.conn.scheme; 28 29 import java.util.ArrayList; 30 import java.util.List; 31 import java.util.Map; 32 import java.util.concurrent.ConcurrentHashMap; 33 34 import org.apache.http.HttpHost; 35 36 /** 37 * A set of supported protocol {@link AsyncScheme}s. 38 * Schemes are identified by lowercase names. 39 * 40 */ 41 @Deprecated 42 public final class AsyncSchemeRegistry { 43 44 /** The available schemes in this registry. */ 45 private final Map<String, AsyncScheme> registeredSchemes; 46 47 /** 48 * Creates a new, empty scheme registry. 49 */ 50 public AsyncSchemeRegistry() { 51 super(); 52 registeredSchemes = new ConcurrentHashMap<String, AsyncScheme>(); 53 } 54 55 /** 56 * Obtains a scheme by name. 57 * 58 * @param name the name of the scheme to look up (in lowercase) 59 * 60 * @return the scheme, never {@code null} 61 * 62 * @throws IllegalStateException 63 * if the scheme with the given name is not registered 64 */ 65 public final AsyncScheme getScheme(final String name) { 66 final AsyncScheme found = get(name); 67 if (found == null) { 68 throw new IllegalStateException 69 ("Scheme '"+name+"' not registered."); 70 } 71 return found; 72 } 73 74 /** 75 * Obtains the scheme for a host. 76 * Convenience method for {@code getScheme(host.getSchemeName())} 77 * 78 * @param host the host for which to obtain the scheme 79 * 80 * @return the scheme for the given host, never {@code null} 81 * 82 * @throws IllegalStateException 83 * if a scheme with the respective name is not registered 84 */ 85 public final AsyncScheme getScheme(final HttpHost host) { 86 if (host == null) { 87 throw new IllegalArgumentException("Host must not be null."); 88 } 89 return getScheme(host.getSchemeName()); 90 } 91 92 /** 93 * Obtains a scheme by name, if registered. 94 * 95 * @param name the name of the scheme to look up (in lowercase) 96 * 97 * @return the scheme, or 98 * {@code null} if there is none by this name 99 */ 100 public final AsyncScheme get(final String name) { 101 if (name == null) { 102 throw new IllegalArgumentException("Name must not be null."); 103 } 104 105 // leave it to the caller to use the correct name - all lowercase 106 //name = name.toLowerCase(Locale.ENGLISH); 107 final AsyncScheme found = registeredSchemes.get(name); 108 return found; 109 } 110 111 /** 112 * Registers a scheme. 113 * The scheme can later be retrieved by its name 114 * using {@link #getScheme(String) getScheme} or {@link #get get}. 115 * 116 * @param sch the scheme to register 117 * 118 * @return the scheme previously registered with that name, or 119 * {@code null} if none was registered 120 */ 121 public final AsyncScheme register(final AsyncScheme sch) { 122 if (sch == null) { 123 throw new IllegalArgumentException("Scheme must not be null."); 124 } 125 126 final AsyncScheme old = registeredSchemes.put(sch.getName(), sch); 127 return old; 128 } 129 130 /** 131 * Unregisters a scheme. 132 * 133 * @param name the name of the scheme to unregister (in lowercase) 134 * 135 * @return the unregistered scheme, or 136 * {@code null} if there was none 137 */ 138 public final AsyncScheme unregister(final String name) { 139 if (name == null) { 140 throw new IllegalArgumentException("Name must not be null."); 141 } 142 143 // leave it to the caller to use the correct name - all lowercase 144 //name = name.toLowerCase(Locale.ENGLISH); 145 final AsyncScheme gone = registeredSchemes.remove(name); 146 return gone; 147 } 148 149 /** 150 * Obtains the names of the registered schemes. 151 * 152 * @return List containing registered scheme names. 153 */ 154 public final List<String> getSchemeNames() { 155 return new ArrayList<String>(registeredSchemes.keySet()); 156 } 157 158 /** 159 * Populates the internal collection of registered {@link AsyncScheme protocol schemes} 160 * with the content of the map passed as a parameter. 161 * 162 * @param map protocol schemes 163 */ 164 public void setItems(final Map<String, AsyncScheme> map) { 165 if (map == null) { 166 return; 167 } 168 registeredSchemes.clear(); 169 registeredSchemes.putAll(map); 170 } 171 172 } 173