| /* |
| * Copyright 2003-2004 The Apache Software Foundation |
| * |
| * Licensed 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.commons.collections.map; |
| |
| import java.util.SortedMap; |
| |
| import org.apache.commons.collections.functors.InstanceofPredicate; |
| |
| /** |
| * Decorates another <code>SortedMap</code> to validate that elements added |
| * are of a specific type. |
| * <p> |
| * The validation of additions is performed via an instanceof test against |
| * a specified <code>Class</code>. If an object cannot be added to the |
| * collection, an IllegalArgumentException is thrown. |
| * <p> |
| * <strong>Note that TypedSortedMap is not synchronized and is not thread-safe.</strong> |
| * If you wish to use this map from multiple threads concurrently, you must use |
| * appropriate synchronization. The simplest approach is to wrap this map |
| * using {@link java.util.Collections#synchronizedSortedMap}. This class may throw |
| * exceptions when accessed by concurrent threads without synchronization. |
| * <p> |
| * The returned implementation is Serializable from Commons Collections 3.1. |
| * |
| * @since Commons Collections 3.0 |
| * @version $Revision: 1.1 $ $Date: 2009/05/27 22:16:30 $ |
| * |
| * @author Stephen Colebourne |
| * @author Matthew Hawthorne |
| */ |
| public class TypedSortedMap { |
| |
| /** |
| * Factory method to create a typed sorted map. |
| * <p> |
| * If there are any elements already in the map being decorated, they |
| * are validated. |
| * |
| * @param map the map to decorate, must not be null |
| * @param keyType the type to allow as keys, must not be null |
| * @param valueType the type to allow as values, must not be null |
| * @throws IllegalArgumentException if list or type is null |
| * @throws IllegalArgumentException if the list contains invalid elements |
| */ |
| public static SortedMap decorate(SortedMap map, Class keyType, Class valueType) { |
| return new PredicatedSortedMap( |
| map, |
| InstanceofPredicate.getInstance(keyType), |
| InstanceofPredicate.getInstance(valueType) |
| ); |
| } |
| |
| /** |
| * Restrictive constructor. |
| */ |
| protected TypedSortedMap() { |
| } |
| |
| } |