| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| package org.apache.felix.cm.impl; |
| |
| |
| import java.util.Collections; |
| import java.util.Dictionary; |
| import java.util.Enumeration; |
| import java.util.Hashtable; |
| import java.util.Vector; |
| |
| |
| /** |
| * The <code>CaseInsensitiveDictionary</code> is a |
| * <code>java.util.Dictionary</code> which conforms to the requirements laid |
| * out by the Configuration Admin Service Specification requiring the property |
| * names to keep case but to ignore case when accessing the properties. |
| * |
| * @author fmeschbe |
| */ |
| class CaseInsensitiveDictionary extends Dictionary |
| { |
| |
| /** |
| * The backend dictionary with lower case keys. |
| */ |
| private Hashtable internalMap; |
| |
| /** |
| * Mapping of lower case keys to original case keys as last used to set |
| * a property value. |
| */ |
| private Hashtable originalKeys; |
| |
| |
| CaseInsensitiveDictionary() |
| { |
| internalMap = new Hashtable(); |
| originalKeys = new Hashtable(); |
| } |
| |
| |
| CaseInsensitiveDictionary( Dictionary props ) |
| { |
| this(); |
| |
| Enumeration keys = props.keys(); |
| while ( keys.hasMoreElements() ) |
| { |
| Object key = keys.nextElement(); |
| if ( !( key instanceof String ) ) |
| { |
| throw new IllegalArgumentException( "Key [" + key + "] must be a String" ); |
| } |
| |
| // check uniqueness of key |
| String lowerCase = ( ( String ) key ).toLowerCase(); |
| if ( internalMap.containsKey( lowerCase ) ) |
| { |
| throw new IllegalArgumentException( "Key [" + key + "] already present in different case" ); |
| } |
| |
| // check the value |
| Object value = props.get( key ); |
| checkValue( value ); |
| |
| // add the key/value pair |
| internalMap.put( lowerCase, value ); |
| originalKeys.put( lowerCase, key ); |
| } |
| } |
| |
| |
| CaseInsensitiveDictionary( CaseInsensitiveDictionary props ) |
| { |
| internalMap = new Hashtable( props.internalMap ); |
| originalKeys = new Hashtable( props.originalKeys ); |
| } |
| |
| |
| /* (non-Javadoc) |
| * @see java.util.Dictionary#elements() |
| */ |
| public Enumeration elements() |
| { |
| return Collections.enumeration( internalMap.values() ); |
| } |
| |
| |
| /* (non-Javadoc) |
| * @see java.util.Dictionary#get(java.lang.Object) |
| */ |
| public Object get( Object key ) |
| { |
| if ( key == null ) |
| { |
| throw new NullPointerException( "key" ); |
| } |
| |
| String stringKey = String.valueOf( key ).toLowerCase(); |
| return internalMap.get( stringKey ); |
| } |
| |
| |
| /* (non-Javadoc) |
| * @see java.util.Dictionary#isEmpty() |
| */ |
| public boolean isEmpty() |
| { |
| return internalMap.isEmpty(); |
| } |
| |
| |
| /* (non-Javadoc) |
| * @see java.util.Dictionary#keys() |
| */ |
| public Enumeration keys() |
| { |
| return Collections.enumeration( originalKeys.values() ); |
| } |
| |
| |
| /* (non-Javadoc) |
| * @see java.util.Dictionary#put(java.lang.Object, java.lang.Object) |
| */ |
| public Object put( Object key, Object value ) |
| { |
| if ( key == null || value == null ) |
| { |
| throw new NullPointerException( "key or value" ); |
| } |
| |
| if ( !( key instanceof String ) ) |
| { |
| throw new IllegalArgumentException( "Key [" + key + "] must be a String" ); |
| } |
| |
| checkValue( value ); |
| |
| String lowerCase = String.valueOf( key ).toLowerCase(); |
| originalKeys.put( lowerCase, key ); |
| return internalMap.put( lowerCase, value ); |
| } |
| |
| |
| /* (non-Javadoc) |
| * @see java.util.Dictionary#remove(java.lang.Object) |
| */ |
| public Object remove( Object key ) |
| { |
| if ( key == null ) |
| { |
| throw new NullPointerException( "key" ); |
| } |
| |
| String lowerCase = String.valueOf( key ).toLowerCase(); |
| originalKeys.remove( lowerCase ); |
| return internalMap.remove( lowerCase ); |
| } |
| |
| |
| /* (non-Javadoc) |
| * @see java.util.Dictionary#size() |
| */ |
| public int size() |
| { |
| return internalMap.size(); |
| } |
| |
| |
| //---------- internal ----------------------------------------------------- |
| |
| static void checkValue( Object value ) |
| { |
| Class type; |
| if ( value instanceof Object[] ) |
| { |
| // check simple or primitive |
| type = value.getClass().getComponentType(); |
| |
| // check for primitive type |
| if ( type == Integer.TYPE || type == Long.TYPE || type == Float.TYPE || type == Double.TYPE |
| || type == Byte.TYPE || type == Short.TYPE || type == Character.TYPE || type == Boolean.TYPE ) |
| { |
| return; |
| } |
| |
| } |
| else if ( value instanceof Vector ) |
| { |
| // check simple |
| Vector vector = ( Vector ) value; |
| if ( vector.isEmpty() ) |
| { |
| throw new IllegalArgumentException( "Vector must not be empty" ); |
| } |
| |
| // ensure all elements have the same type |
| type = null; |
| for ( int i = 0; i < vector.size(); i++ ) |
| { |
| Object el = vector.get( i ); |
| if ( el == null ) |
| { |
| throw new IllegalArgumentException( "Vector must not contain null elements" ); |
| } |
| if ( type == null ) |
| { |
| type = el.getClass(); |
| } |
| else if ( type != el.getClass() ) |
| { |
| throw new IllegalArgumentException( "Vector element types must not be mixed" ); |
| } |
| } |
| |
| } |
| else if ( value != null ) |
| { |
| // get the type to check (must be simple) |
| type = value.getClass(); |
| |
| } |
| else |
| { |
| // null is illegal |
| throw new IllegalArgumentException( "Value must not be null" ); |
| } |
| |
| // check for simple type |
| if ( type == String.class || type == Integer.class || type == Long.class || type == Float.class |
| || type == Double.class || type == Byte.class || type == Short.class || type == Character.class |
| || type == Boolean.class ) |
| { |
| return; |
| } |
| |
| // not a valid type |
| throw new IllegalArgumentException( "Value [" + value + "] has unsupported (base-) type " + type ); |
| } |
| |
| |
| //---------- Object Overwrites -------------------------------------------- |
| |
| public String toString() |
| { |
| return internalMap.toString(); |
| } |
| |
| } |