1 /* 2 * reserved comment block 3 * DO NOT REMOVE OR ALTER! 4 */ 5 /* 6 * Copyright 2003,2004 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 21 package com.sun.org.apache.xerces.internal.xs; 22 23 import java.util.List; 24 25 /** 26 * The <code>XSObjectList</code> interface provides the abstraction of an 27 * immutable ordered collection of <code>XSObject</code>s, without defining 28 * or constraining how this collection is implemented. 29 */ 30 public interface XSObjectList extends List { 31 /** 32 * The number of <code>XSObjects</code> in the list. The range of valid 33 * child object indices is 0 to <code>length-1</code> inclusive. 34 */ 35 public int getLength(); 36 37 /** 38 * Returns the <code>index</code>th item in the collection or 39 * <code>null</code> if <code>index</code> is greater than or equal to 40 * the number of objects in the list. The index starts at 0. 41 * @param index index into the collection. 42 * @return The <code>XSObject</code> at the <code>index</code>th 43 * position in the <code>XSObjectList</code>, or <code>null</code> if 44 * the index specified is not valid. 45 */ 46 public XSObject item(int index); 47 48 }