1 /* 2 * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved. 3 * @LastModified: Oct 2017 4 */ 5 /* 6 * Licensed to the Apache Software Foundation (ASF) under one or more 7 * contributor license agreements. See the NOTICE file distributed with 8 * this work for additional information regarding copyright ownership. 9 * The ASF licenses this file to You under the Apache License, Version 2.0 10 * (the "License"); you may not use this file except in compliance with 11 * the License. You may obtain a copy of the License at 12 * 13 * http://www.apache.org/licenses/LICENSE-2.0 14 * 15 * Unless required by applicable law or agreed to in writing, software 16 * distributed under the License is distributed on an "AS IS" BASIS, 17 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 18 * See the License for the specific language governing permissions and 19 * limitations under the License. 20 */ 21 22 package com.sun.org.apache.xerces.internal.xs; 23 24 import java.util.List; 25 26 /** 27 * The <code>XSObjectList</code> interface provides the abstraction of an 28 * immutable ordered collection of <code>XSObject</code>s, without defining 29 * or constraining how this collection is implemented. 30 */ 31 public interface XSObjectList extends List<XSObject> { 32 /** 33 * The number of <code>XSObjects</code> in the list. The range of valid 34 * child object indices is 0 to <code>length-1</code> inclusive. 35 */ 36 public int getLength(); 37 38 /** 39 * Returns the <code>index</code>th item in the collection or 40 * <code>null</code> if <code>index</code> is greater than or equal to 41 * the number of objects in the list. The index starts at 0. 42 * @param index index into the collection. 43 * @return The <code>XSObject</code> at the <code>index</code>th 44 * position in the <code>XSObjectList</code>, or <code>null</code> if 45 * the index specified is not valid. 46 */ 47 public XSObject item(int index); 48 49 }