001/* 002 * Licensed to the Apache Software Foundation (ASF) under one or more 003 * contributor license agreements. See the NOTICE file distributed with 004 * this work for additional information regarding copyright ownership. 005 * The ASF licenses this file to You under the Apache License, Version 2.0 006 * (the "License"); you may not use this file except in compliance with 007 * the License. You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 */ 017package org.apache.commons.collections.primitives.decorators; 018 019import java.io.Serializable; 020 021import org.apache.commons.collections.primitives.DoubleList; 022 023/** 024 * 025 * @since Commons Primitives 1.0 026 * @version $Revision: 480463 $ $Date: 2006-11-29 03:15:23 -0500 (Wed, 29 Nov 2006) $ 027 * 028 * @author Rodney Waldhoff 029 */ 030public final class UnmodifiableDoubleList extends BaseUnmodifiableDoubleList implements Serializable { 031 UnmodifiableDoubleList(DoubleList list) { 032 this.proxied = list; 033 } 034 035 public static final DoubleList wrap(DoubleList list) { 036 if(null == list) { 037 return null; 038 } else if(list instanceof UnmodifiableDoubleList) { 039 return list; 040 } else if(list instanceof Serializable) { 041 return new UnmodifiableDoubleList(list); 042 } else { 043 return new NonSerializableUnmodifiableDoubleList(list); 044 } 045 } 046 047 protected DoubleList getProxiedList() { 048 return proxied; 049 } 050 051 private DoubleList proxied = null; 052}