Felix Meschberger | 5e18fac | 2009-10-09 10:28:53 +0000 | [diff] [blame] | 1 | /* |
Felix Meschberger | add2b4a | 2007-04-11 18:12:33 +0000 | [diff] [blame] | 2 | * Licensed to the Apache Software Foundation (ASF) under one |
| 3 | * or more contributor license agreements. See the NOTICE file |
| 4 | * distributed with this work for additional information |
| 5 | * regarding copyright ownership. The ASF licenses this file |
| 6 | * to you under the Apache License, Version 2.0 (the |
| 7 | * "License"); you may not use this file except in compliance |
| 8 | * with the License. You may obtain a copy of the License at |
| 9 | * |
| 10 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 11 | * |
| 12 | * Unless required by applicable law or agreed to in writing, |
| 13 | * software distributed under the License is distributed on an |
| 14 | * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| 15 | * KIND, either express or implied. See the License for the |
| 16 | * specific language governing permissions and limitations |
| 17 | * under the License. |
| 18 | */ |
| 19 | package org.apache.felix.cm.impl; |
| 20 | |
| 21 | |
Felix Meschberger | a0903df | 2009-01-19 10:40:28 +0000 | [diff] [blame] | 22 | import java.lang.reflect.Array; |
Felix Meschberger | aeb8c5c | 2009-01-14 19:52:32 +0000 | [diff] [blame] | 23 | import java.util.ArrayList; |
| 24 | import java.util.Collection; |
Felix Meschberger | add2b4a | 2007-04-11 18:12:33 +0000 | [diff] [blame] | 25 | import java.util.Collections; |
| 26 | import java.util.Dictionary; |
| 27 | import java.util.Enumeration; |
| 28 | import java.util.Hashtable; |
Felix Meschberger | aeb8c5c | 2009-01-14 19:52:32 +0000 | [diff] [blame] | 29 | import java.util.Iterator; |
Felix Meschberger | a0903df | 2009-01-19 10:40:28 +0000 | [diff] [blame] | 30 | import java.util.Map; |
| 31 | import java.util.Vector; |
Felix Meschberger | add2b4a | 2007-04-11 18:12:33 +0000 | [diff] [blame] | 32 | |
| 33 | |
| 34 | /** |
| 35 | * The <code>CaseInsensitiveDictionary</code> is a |
| 36 | * <code>java.util.Dictionary</code> which conforms to the requirements laid |
| 37 | * out by the Configuration Admin Service Specification requiring the property |
| 38 | * names to keep case but to ignore case when accessing the properties. |
Felix Meschberger | add2b4a | 2007-04-11 18:12:33 +0000 | [diff] [blame] | 39 | */ |
| 40 | class CaseInsensitiveDictionary extends Dictionary |
| 41 | { |
| 42 | |
| 43 | /** |
| 44 | * The backend dictionary with lower case keys. |
| 45 | */ |
| 46 | private Hashtable internalMap; |
| 47 | |
| 48 | /** |
Felix Meschberger | 40d4e1b | 2008-03-26 10:41:00 +0000 | [diff] [blame] | 49 | * Mapping of lower case keys to original case keys as last used to set a |
| 50 | * property value. |
Felix Meschberger | add2b4a | 2007-04-11 18:12:33 +0000 | [diff] [blame] | 51 | */ |
| 52 | private Hashtable originalKeys; |
| 53 | |
| 54 | |
| 55 | CaseInsensitiveDictionary() |
| 56 | { |
| 57 | internalMap = new Hashtable(); |
| 58 | originalKeys = new Hashtable(); |
| 59 | } |
| 60 | |
| 61 | |
| 62 | CaseInsensitiveDictionary( Dictionary props ) |
| 63 | { |
| 64 | this(); |
| 65 | |
| 66 | Enumeration keys = props.keys(); |
| 67 | while ( keys.hasMoreElements() ) |
| 68 | { |
| 69 | Object key = keys.nextElement(); |
Felix Meschberger | 40d4e1b | 2008-03-26 10:41:00 +0000 | [diff] [blame] | 70 | |
| 71 | // check the correct syntax of the key |
| 72 | checkKey( key ); |
Felix Meschberger | add2b4a | 2007-04-11 18:12:33 +0000 | [diff] [blame] | 73 | |
| 74 | // check uniqueness of key |
| 75 | String lowerCase = ( ( String ) key ).toLowerCase(); |
| 76 | if ( internalMap.containsKey( lowerCase ) ) |
| 77 | { |
| 78 | throw new IllegalArgumentException( "Key [" + key + "] already present in different case" ); |
| 79 | } |
| 80 | |
| 81 | // check the value |
| 82 | Object value = props.get( key ); |
Felix Meschberger | aeb8c5c | 2009-01-14 19:52:32 +0000 | [diff] [blame] | 83 | value = checkValue( value ); |
Felix Meschberger | add2b4a | 2007-04-11 18:12:33 +0000 | [diff] [blame] | 84 | |
| 85 | // add the key/value pair |
| 86 | internalMap.put( lowerCase, value ); |
| 87 | originalKeys.put( lowerCase, key ); |
| 88 | } |
| 89 | } |
| 90 | |
| 91 | |
Felix Meschberger | a0903df | 2009-01-19 10:40:28 +0000 | [diff] [blame] | 92 | CaseInsensitiveDictionary( CaseInsensitiveDictionary props, boolean deepCopy ) |
Felix Meschberger | add2b4a | 2007-04-11 18:12:33 +0000 | [diff] [blame] | 93 | { |
Felix Meschberger | a0903df | 2009-01-19 10:40:28 +0000 | [diff] [blame] | 94 | Hashtable tmp = new Hashtable( Math.max( 2 * props.internalMap.size(), 11 ), 0.75f ); |
| 95 | if ( deepCopy ) |
| 96 | { |
| 97 | Iterator entries = props.internalMap.entrySet().iterator(); |
| 98 | while ( entries.hasNext() ) |
| 99 | { |
| 100 | Map.Entry entry = ( Map.Entry ) entries.next(); |
| 101 | Object value = entry.getValue(); |
| 102 | if ( value.getClass().isArray() ) |
| 103 | { |
| 104 | // copy array |
| 105 | int length = Array.getLength( value ); |
| 106 | Object newValue = Array.newInstance( value.getClass().getComponentType(), length ); |
| 107 | System.arraycopy( value, 0, newValue, 0, length ); |
| 108 | value = newValue; |
| 109 | } |
| 110 | else if ( value instanceof Collection ) |
| 111 | { |
| 112 | // copy collection, create Vector |
| 113 | // a Vector is created because the R4 and R4.1 specs |
| 114 | // state that the values must be simple, array or |
| 115 | // Vector. And even though we accept Collection nowadays |
| 116 | // there might be clients out there still written against |
| 117 | // R4 and R4.1 spec expecting Vector |
| 118 | value = new Vector( ( Collection ) value ); |
| 119 | } |
| 120 | tmp.put( entry.getKey(), value ); |
| 121 | } |
| 122 | } |
| 123 | else |
| 124 | { |
| 125 | tmp.putAll( props.internalMap ); |
| 126 | } |
Felix Meschberger | 5e18fac | 2009-10-09 10:28:53 +0000 | [diff] [blame] | 127 | |
Felix Meschberger | a0903df | 2009-01-19 10:40:28 +0000 | [diff] [blame] | 128 | internalMap = tmp; |
Felix Meschberger | add2b4a | 2007-04-11 18:12:33 +0000 | [diff] [blame] | 129 | originalKeys = new Hashtable( props.originalKeys ); |
| 130 | } |
| 131 | |
| 132 | |
Felix Meschberger | 40d4e1b | 2008-03-26 10:41:00 +0000 | [diff] [blame] | 133 | /* |
| 134 | * (non-Javadoc) |
Felix Meschberger | 5e18fac | 2009-10-09 10:28:53 +0000 | [diff] [blame] | 135 | * |
Felix Meschberger | add2b4a | 2007-04-11 18:12:33 +0000 | [diff] [blame] | 136 | * @see java.util.Dictionary#elements() |
| 137 | */ |
| 138 | public Enumeration elements() |
| 139 | { |
| 140 | return Collections.enumeration( internalMap.values() ); |
| 141 | } |
| 142 | |
| 143 | |
Felix Meschberger | 40d4e1b | 2008-03-26 10:41:00 +0000 | [diff] [blame] | 144 | /* |
| 145 | * (non-Javadoc) |
Felix Meschberger | 5e18fac | 2009-10-09 10:28:53 +0000 | [diff] [blame] | 146 | * |
Felix Meschberger | add2b4a | 2007-04-11 18:12:33 +0000 | [diff] [blame] | 147 | * @see java.util.Dictionary#get(java.lang.Object) |
| 148 | */ |
| 149 | public Object get( Object key ) |
| 150 | { |
| 151 | if ( key == null ) |
| 152 | { |
| 153 | throw new NullPointerException( "key" ); |
| 154 | } |
| 155 | |
| 156 | String stringKey = String.valueOf( key ).toLowerCase(); |
| 157 | return internalMap.get( stringKey ); |
| 158 | } |
| 159 | |
| 160 | |
Felix Meschberger | 40d4e1b | 2008-03-26 10:41:00 +0000 | [diff] [blame] | 161 | /* |
| 162 | * (non-Javadoc) |
Felix Meschberger | 5e18fac | 2009-10-09 10:28:53 +0000 | [diff] [blame] | 163 | * |
Felix Meschberger | add2b4a | 2007-04-11 18:12:33 +0000 | [diff] [blame] | 164 | * @see java.util.Dictionary#isEmpty() |
| 165 | */ |
| 166 | public boolean isEmpty() |
| 167 | { |
| 168 | return internalMap.isEmpty(); |
| 169 | } |
| 170 | |
| 171 | |
Felix Meschberger | 40d4e1b | 2008-03-26 10:41:00 +0000 | [diff] [blame] | 172 | /* |
| 173 | * (non-Javadoc) |
Felix Meschberger | 5e18fac | 2009-10-09 10:28:53 +0000 | [diff] [blame] | 174 | * |
Felix Meschberger | add2b4a | 2007-04-11 18:12:33 +0000 | [diff] [blame] | 175 | * @see java.util.Dictionary#keys() |
| 176 | */ |
| 177 | public Enumeration keys() |
| 178 | { |
| 179 | return Collections.enumeration( originalKeys.values() ); |
| 180 | } |
| 181 | |
| 182 | |
Felix Meschberger | 40d4e1b | 2008-03-26 10:41:00 +0000 | [diff] [blame] | 183 | /* |
| 184 | * (non-Javadoc) |
Felix Meschberger | 5e18fac | 2009-10-09 10:28:53 +0000 | [diff] [blame] | 185 | * |
Felix Meschberger | add2b4a | 2007-04-11 18:12:33 +0000 | [diff] [blame] | 186 | * @see java.util.Dictionary#put(java.lang.Object, java.lang.Object) |
| 187 | */ |
| 188 | public Object put( Object key, Object value ) |
| 189 | { |
| 190 | if ( key == null || value == null ) |
| 191 | { |
| 192 | throw new NullPointerException( "key or value" ); |
| 193 | } |
| 194 | |
Felix Meschberger | 40d4e1b | 2008-03-26 10:41:00 +0000 | [diff] [blame] | 195 | checkKey( key ); |
Felix Meschberger | aeb8c5c | 2009-01-14 19:52:32 +0000 | [diff] [blame] | 196 | value = checkValue( value ); |
Felix Meschberger | add2b4a | 2007-04-11 18:12:33 +0000 | [diff] [blame] | 197 | |
| 198 | String lowerCase = String.valueOf( key ).toLowerCase(); |
| 199 | originalKeys.put( lowerCase, key ); |
| 200 | return internalMap.put( lowerCase, value ); |
| 201 | } |
| 202 | |
| 203 | |
Felix Meschberger | 40d4e1b | 2008-03-26 10:41:00 +0000 | [diff] [blame] | 204 | /* |
| 205 | * (non-Javadoc) |
Felix Meschberger | 5e18fac | 2009-10-09 10:28:53 +0000 | [diff] [blame] | 206 | * |
Felix Meschberger | add2b4a | 2007-04-11 18:12:33 +0000 | [diff] [blame] | 207 | * @see java.util.Dictionary#remove(java.lang.Object) |
| 208 | */ |
| 209 | public Object remove( Object key ) |
| 210 | { |
| 211 | if ( key == null ) |
| 212 | { |
| 213 | throw new NullPointerException( "key" ); |
| 214 | } |
| 215 | |
| 216 | String lowerCase = String.valueOf( key ).toLowerCase(); |
| 217 | originalKeys.remove( lowerCase ); |
| 218 | return internalMap.remove( lowerCase ); |
| 219 | } |
| 220 | |
| 221 | |
Felix Meschberger | 40d4e1b | 2008-03-26 10:41:00 +0000 | [diff] [blame] | 222 | /* |
| 223 | * (non-Javadoc) |
Felix Meschberger | 5e18fac | 2009-10-09 10:28:53 +0000 | [diff] [blame] | 224 | * |
Felix Meschberger | add2b4a | 2007-04-11 18:12:33 +0000 | [diff] [blame] | 225 | * @see java.util.Dictionary#size() |
| 226 | */ |
| 227 | public int size() |
| 228 | { |
| 229 | return internalMap.size(); |
| 230 | } |
| 231 | |
| 232 | |
Felix Meschberger | 40d4e1b | 2008-03-26 10:41:00 +0000 | [diff] [blame] | 233 | // ---------- internal ----------------------------------------------------- |
| 234 | |
| 235 | /** |
| 236 | * Ensures the <code>key</code> complies with the <em>symbolic-name</em> |
| 237 | * production of the OSGi core specification (1.3.2): |
Felix Meschberger | 5e18fac | 2009-10-09 10:28:53 +0000 | [diff] [blame] | 238 | * |
Felix Meschberger | 40d4e1b | 2008-03-26 10:41:00 +0000 | [diff] [blame] | 239 | * <pre> |
| 240 | * symbolic-name :: = token('.'token)* |
| 241 | * digit ::= [0..9] |
| 242 | * alpha ::= [a..zA..Z] |
| 243 | * alphanum ::= alpha | digit |
| 244 | * token ::= ( alphanum | ’_’ | ’-’ )+ |
| 245 | * </pre> |
Felix Meschberger | 5e18fac | 2009-10-09 10:28:53 +0000 | [diff] [blame] | 246 | * |
Felix Meschberger | 40d4e1b | 2008-03-26 10:41:00 +0000 | [diff] [blame] | 247 | * If the key does not comply an <code>IllegalArgumentException</code> is |
| 248 | * thrown. |
Felix Meschberger | 5e18fac | 2009-10-09 10:28:53 +0000 | [diff] [blame] | 249 | * |
Felix Meschberger | 40d4e1b | 2008-03-26 10:41:00 +0000 | [diff] [blame] | 250 | * @param key |
| 251 | * The configuration property key to check. |
| 252 | * @throws IllegalArgumentException |
| 253 | * if the key does not comply with the symbolic-name production. |
| 254 | */ |
| 255 | static void checkKey( Object keyObject ) |
| 256 | { |
Felix Meschberger | 5e18fac | 2009-10-09 10:28:53 +0000 | [diff] [blame] | 257 | // check for wrong type or null key |
Felix Meschberger | 40d4e1b | 2008-03-26 10:41:00 +0000 | [diff] [blame] | 258 | if ( !( keyObject instanceof String ) ) |
| 259 | { |
| 260 | throw new IllegalArgumentException( "Key [" + keyObject + "] must be a String" ); |
| 261 | } |
| 262 | |
| 263 | String key = ( String ) keyObject; |
Felix Meschberger | 5e18fac | 2009-10-09 10:28:53 +0000 | [diff] [blame] | 264 | |
| 265 | // check for empty string |
| 266 | if ( key.length() == 0 ) |
Felix Meschberger | 40d4e1b | 2008-03-26 10:41:00 +0000 | [diff] [blame] | 267 | { |
Felix Meschberger | 5e18fac | 2009-10-09 10:28:53 +0000 | [diff] [blame] | 268 | throw new IllegalArgumentException( "Key [" + key + "] must not be an empty string" ); |
Felix Meschberger | 40d4e1b | 2008-03-26 10:41:00 +0000 | [diff] [blame] | 269 | } |
Felix Meschberger | 40d4e1b | 2008-03-26 10:41:00 +0000 | [diff] [blame] | 270 | } |
| 271 | |
Felix Meschberger | add2b4a | 2007-04-11 18:12:33 +0000 | [diff] [blame] | 272 | |
Felix Meschberger | aeb8c5c | 2009-01-14 19:52:32 +0000 | [diff] [blame] | 273 | static Object checkValue( Object value ) |
Felix Meschberger | add2b4a | 2007-04-11 18:12:33 +0000 | [diff] [blame] | 274 | { |
| 275 | Class type; |
Felix Meschberger | 88d6d10 | 2009-01-19 09:48:53 +0000 | [diff] [blame] | 276 | if ( value == null ) |
| 277 | { |
| 278 | // null is illegal |
| 279 | throw new IllegalArgumentException( "Value must not be null" ); |
| 280 | |
| 281 | } |
| 282 | else if ( value.getClass().isArray() ) |
Felix Meschberger | add2b4a | 2007-04-11 18:12:33 +0000 | [diff] [blame] | 283 | { |
| 284 | // check simple or primitive |
| 285 | type = value.getClass().getComponentType(); |
| 286 | |
Felix Meschberger | 88d6d10 | 2009-01-19 09:48:53 +0000 | [diff] [blame] | 287 | // check for primitive type (simple types are checked below) |
| 288 | // note: void[] cannot be created, so we ignore this here |
| 289 | if ( type.isPrimitive() ) |
Felix Meschberger | add2b4a | 2007-04-11 18:12:33 +0000 | [diff] [blame] | 290 | { |
Felix Meschberger | aeb8c5c | 2009-01-14 19:52:32 +0000 | [diff] [blame] | 291 | return value; |
Felix Meschberger | add2b4a | 2007-04-11 18:12:33 +0000 | [diff] [blame] | 292 | } |
| 293 | |
| 294 | } |
Felix Meschberger | aeb8c5c | 2009-01-14 19:52:32 +0000 | [diff] [blame] | 295 | else if ( value instanceof Collection ) |
Felix Meschberger | add2b4a | 2007-04-11 18:12:33 +0000 | [diff] [blame] | 296 | { |
| 297 | // check simple |
Felix Meschberger | aeb8c5c | 2009-01-14 19:52:32 +0000 | [diff] [blame] | 298 | Collection collection = ( Collection ) value; |
| 299 | if ( collection.isEmpty() ) |
Felix Meschberger | add2b4a | 2007-04-11 18:12:33 +0000 | [diff] [blame] | 300 | { |
Felix Meschberger | aeb8c5c | 2009-01-14 19:52:32 +0000 | [diff] [blame] | 301 | throw new IllegalArgumentException( "Collection must not be empty" ); |
Felix Meschberger | add2b4a | 2007-04-11 18:12:33 +0000 | [diff] [blame] | 302 | } |
| 303 | |
Felix Meschberger | aeb8c5c | 2009-01-14 19:52:32 +0000 | [diff] [blame] | 304 | // ensure all elements have the same type and to internal list |
| 305 | Collection internalValue = new ArrayList( collection.size() ); |
Felix Meschberger | add2b4a | 2007-04-11 18:12:33 +0000 | [diff] [blame] | 306 | type = null; |
Felix Meschberger | aeb8c5c | 2009-01-14 19:52:32 +0000 | [diff] [blame] | 307 | for ( Iterator ci = collection.iterator(); ci.hasNext(); ) |
Felix Meschberger | add2b4a | 2007-04-11 18:12:33 +0000 | [diff] [blame] | 308 | { |
Felix Meschberger | aeb8c5c | 2009-01-14 19:52:32 +0000 | [diff] [blame] | 309 | Object el = ci.next(); |
Felix Meschberger | add2b4a | 2007-04-11 18:12:33 +0000 | [diff] [blame] | 310 | if ( el == null ) |
| 311 | { |
Felix Meschberger | aeb8c5c | 2009-01-14 19:52:32 +0000 | [diff] [blame] | 312 | throw new IllegalArgumentException( "Collection must not contain null elements" ); |
Felix Meschberger | add2b4a | 2007-04-11 18:12:33 +0000 | [diff] [blame] | 313 | } |
| 314 | if ( type == null ) |
| 315 | { |
| 316 | type = el.getClass(); |
| 317 | } |
| 318 | else if ( type != el.getClass() ) |
| 319 | { |
Felix Meschberger | aeb8c5c | 2009-01-14 19:52:32 +0000 | [diff] [blame] | 320 | throw new IllegalArgumentException( "Collection element types must not be mixed" ); |
Felix Meschberger | add2b4a | 2007-04-11 18:12:33 +0000 | [diff] [blame] | 321 | } |
Felix Meschberger | aeb8c5c | 2009-01-14 19:52:32 +0000 | [diff] [blame] | 322 | internalValue.add( el ); |
Felix Meschberger | add2b4a | 2007-04-11 18:12:33 +0000 | [diff] [blame] | 323 | } |
Felix Meschberger | aeb8c5c | 2009-01-14 19:52:32 +0000 | [diff] [blame] | 324 | value = internalValue; |
Felix Meschberger | add2b4a | 2007-04-11 18:12:33 +0000 | [diff] [blame] | 325 | } |
Felix Meschberger | 88d6d10 | 2009-01-19 09:48:53 +0000 | [diff] [blame] | 326 | else |
Felix Meschberger | add2b4a | 2007-04-11 18:12:33 +0000 | [diff] [blame] | 327 | { |
| 328 | // get the type to check (must be simple) |
| 329 | type = value.getClass(); |
| 330 | |
| 331 | } |
Felix Meschberger | add2b4a | 2007-04-11 18:12:33 +0000 | [diff] [blame] | 332 | |
| 333 | // check for simple type |
| 334 | if ( type == String.class || type == Integer.class || type == Long.class || type == Float.class |
| 335 | || type == Double.class || type == Byte.class || type == Short.class || type == Character.class |
| 336 | || type == Boolean.class ) |
| 337 | { |
Felix Meschberger | aeb8c5c | 2009-01-14 19:52:32 +0000 | [diff] [blame] | 338 | return value; |
Felix Meschberger | add2b4a | 2007-04-11 18:12:33 +0000 | [diff] [blame] | 339 | } |
| 340 | |
| 341 | // not a valid type |
| 342 | throw new IllegalArgumentException( "Value [" + value + "] has unsupported (base-) type " + type ); |
| 343 | } |
| 344 | |
| 345 | |
Felix Meschberger | 40d4e1b | 2008-03-26 10:41:00 +0000 | [diff] [blame] | 346 | // ---------- Object Overwrites -------------------------------------------- |
Felix Meschberger | add2b4a | 2007-04-11 18:12:33 +0000 | [diff] [blame] | 347 | |
| 348 | public String toString() |
| 349 | { |
| 350 | return internalMap.toString(); |
| 351 | } |
| 352 | |
| 353 | } |