| /* |
| * 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.openide.util.enum; |
| |
| import java.util.Enumeration; |
| |
| |
| /** |
| * Abstract class that takes an enumeration and alter their elements |
| * to new objects. |
| * To get this class fully work one must override <CODE>alter</CODE> method. |
| * Objects in the input and resulting enumeration must not be <CODE>null</CODE>. |
| * @deprecated JDK 1.5 treats enum as a keyword so this class was |
| * replaced by {@link org.openide.util.Enumerations#convert}. |
| * @author Jaroslav Tulach |
| */ |
| public abstract class AlterEnumeration extends Object implements Enumeration { |
| /** enumeration to filter */ |
| private Enumeration en; |
| |
| /** |
| * @param en enumeration to filter |
| */ |
| public AlterEnumeration(Enumeration en) { |
| this.en = en; |
| } |
| |
| /** Alters objects. Overwrite this to alter the object in the |
| * enumeration by another. |
| * @param o the object to decide on |
| * @return new object to be placed into the output enumeration |
| */ |
| protected abstract Object alter(Object o); |
| |
| /** @return true if there is more elements in the enumeration |
| */ |
| public boolean hasMoreElements() { |
| return en.hasMoreElements(); |
| } |
| |
| /** @return next object in the enumeration |
| * @exception NoSuchElementException can be thrown if there is no next object |
| * in the enumeration |
| */ |
| public Object nextElement() { |
| return alter(en.nextElement()); |
| } |
| } |