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Commons Collections example source code file (TypedSortedMap.java)
The Commons Collections TypedSortedMap.java source code/* * 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.commons.collections.map; import java.util.SortedMap; import org.apache.commons.collections.functors.InstanceofPredicate; /** * Decorates another <code>SortedMap 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. 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. * 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: 646777 $ $Date: 2008-04-10 13:33:15 +0100 (Thu, 10 Apr 2008) $ * * @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() { } } Other Commons Collections examples (source code examples)Here is a short list of links related to this Commons Collections TypedSortedMap.java source code file: |
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