1/*
2 * reserved comment block
3 * DO NOT REMOVE OR ALTER!
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
22package com.sun.org.apache.xerces.internal.xs;
23
24import java.util.List;
25
26/**
27 *  The <code>StringList</code> is an immutable ordered collection of
28 * <code>GenericString</code>.
29 */
30public interface StringList extends List {
31    /**
32     *  The number of <code>GenericString</code>s in the list. The range of
33     * valid child object indices is 0 to <code>length-1</code> inclusive.
34     */
35    public int getLength();
36
37    /**
38     *  Checks if the <code>GenericString</code> <code>item</code> is a member
39     * of this list.
40     * @param item  <code>GenericString</code> whose presence in this list is
41     *   to be tested.
42     * @return  True if this list contains the <code>GenericString</code>
43     *   <code>item</code>.
44     */
45    public boolean contains(String item);
46
47    /**
48     *  Returns the <code>index</code>th item in the collection or
49     * <code>null</code> if <code>index</code> is greater than or equal to
50     * the number of objects in the list. The index starts at 0.
51     * @param index  index into the collection.
52     * @return  The <code>GenericString</code> at the <code>index</code>th
53     *   position in the <code>StringList</code>, or <code>null</code> if
54     *   the index specified is not valid.
55     */
56    public String item(int index);
57
58}
59