| /* |
| * Copyright (c) 2003, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package com.sun.corba.se.impl.orbutil ; |
| |
| import java.util.ArrayList ; |
| |
| /** Utility for managing mappings from densely allocated integer |
| * keys to arbitrary objects. This should only be used for |
| * keys in the range 0..max such that "most" of the key space is actually |
| * used. |
| */ |
| public class DenseIntMapImpl |
| { |
| private ArrayList list = new ArrayList() ; |
| |
| private void checkKey( int key ) |
| { |
| if (key < 0) |
| throw new IllegalArgumentException( "Key must be >= 0." ) ; |
| } |
| |
| /** If key >= 0, return the value bound to key, or null if none. |
| * Throws IllegalArgumentException if key <0. |
| */ |
| public Object get( int key ) |
| { |
| checkKey( key ) ; |
| |
| Object result = null ; |
| if (key < list.size()) |
| result = list.get( key ) ; |
| |
| return result ; |
| } |
| |
| /** If key >= 0, bind value to the key. |
| * Throws IllegalArgumentException if key <0. |
| */ |
| public void set( int key, Object value ) |
| { |
| checkKey( key ) ; |
| extend( key ) ; |
| list.set( key, value ) ; |
| } |
| |
| private void extend( int index ) |
| { |
| if (index >= list.size()) { |
| list.ensureCapacity( index + 1 ) ; |
| int max = list.size() ; |
| while (max++ <= index) |
| list.add( null ) ; |
| } |
| } |
| } |