1 /* 2 * reserved comment block 3 * DO NOT REMOVE OR ALTER! 4 */ 5 /* 6 * Copyright 2004,2005 The Apache Software Foundation. 7 * 8 * Licensed under the Apache License, Version 2.0 (the "License"); 9 * you may not use this file except in compliance with the License. 10 * You may obtain a copy of the License at 11 * 12 * http://www.apache.org/licenses/LICENSE-2.0 13 * 14 * Unless required by applicable law or agreed to in writing, software 15 * distributed under the License is distributed on an "AS IS" BASIS, 16 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 17 * See the License for the specific language governing permissions and 18 * limitations under the License. 19 */ 20 package com.sun.org.apache.xerces.internal.xs.datatypes; 21 22 import java.util.List; 23 24 /** 25 * <p>The <code>ObjectList</code> is an immutable ordered collection of 26 * <code>Object</code>.</p> 27 * 28 * @author Ankit Pasricha, IBM 29 * 30 * @version $Id: ObjectList.java,v 1.7 2010-11-01 04:40:31 joehw Exp $ 31 */ 32 public interface ObjectList extends List { 33 34 /** 35 * The number of <code>Object</code>s in the list. The range of 36 * valid child object indices is 0 to <code>length-1</code> inclusive. 37 */ getLength()38 public int getLength(); 39 40 /** 41 * Checks if the <code>Object</code> <code>item</code> is a 42 * member of this list. 43 * @param item <code>Object</code> whose presence in this list 44 * is to be tested. 45 * @return True if this list contains the <code>Object</code> 46 * <code>item</code>. 47 */ contains(Object item)48 public boolean contains(Object item); 49 50 /** 51 * Returns the <code>index</code>th item in the collection or 52 * <code>null</code> if <code>index</code> is greater than or equal to 53 * the number of objects in the list. The index starts at 0. 54 * @param index index into the collection. 55 * @return The <code>Object</code> at the <code>index</code>th 56 * position in the <code>ObjectList</code>, or <code>null</code> if 57 * the index specified is not valid - greater than or equal to the 58 * number of items in the list or less than zero. 59 */ item(int index)60 public Object item(int index); 61 62 } 63