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 *  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 SortedMap to validate that elements added
are of a specific type.

The validation of additions is performed via an instanceof test against 
a specified Class. If an object cannot be added to the
collection, an IllegalArgumentException is thrown.

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 Collections.synchronizedSortedMap. This class may throw exceptions when accessed by concurrent threads without synchronization. 

The returned implementation is Serializable from Commons Collections 3.1.
Author:
Stephen Colebourne, Matthew Hawthorne
Since:
Commons Collections 3.0
Version:
$Revision: 646777 $ $Date: 2008-04-10 14:33:15 +0200 (Thu, 10 Apr 2008) $/**
 * 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: 646777 $ $Date: 2008-04-10 14:33:15 +0200 (Thu, 10 Apr 2008) $
 * 
 * @author Stephen Colebourne
 * @author Matthew Hawthorne
 */
public class TypedSortedMap {

    
Factory method to create a typed sorted map.

If there are any elements already in the map being decorated, they
are validated.
Params:
map –  the map to decorate, must not be null
keyType –  the type to allow as keys, must not be null
valueType –  the type to allow as values, must not be null
Throws:
IllegalArgumentException – if list or type is null
IllegalArgumentException – if the list contains invalid elements/**
     * 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.
/**
     * Restrictive constructor.
     */
    protected TypedSortedMap() {
    }

}