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Java > Open Source Codes > org > apache > xerces > xs > XSNamespaceItemList


1 /*
2  * Copyright 2003,2004 The Apache Software Foundation.
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  * http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16
17 package org.apache.xerces.xs;
18
19 /**
20  * The <code>XSNamesaceItemList</code> interface provides the abstraction of
21  * an immutable ordered collection of <code>XSNamespaceItem</code>s, without
22  * defining or constraining how this collection is implemented.
23  */
24 public interface XSNamespaceItemList {
25     /**
26      * The number of <code>XSNamespaceItem</code>s in the list. The range of
27      * valid child object indices is 0 to <code>length-1</code> inclusive.
28      */
29     public int getLength();
30
31     /**
32      * Returns the <code>index</code>th item in the collection or
33      * <code>null</code> if <code>index</code> is greater than or equal to
34      * the number of objects in the list. The index starts at 0.
35      * @param index index into the collection.
36      * @return The <code>XSNamespaceItem</code> at the <code>index</code>th
37      * position in the <code>XSNamespaceItemList</code>, or
38      * <code>null</code> if the index specified is not valid.
39      */
40     public XSNamespaceItem item(int index);
41
42 }
43
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