SubContextList.java revision 9f8118474e9513f7a5b7d2a05e4a0fb15d1a6569 
1/*
2 * Licensed to the Apache Software Foundation (ASF) under one
3 * or more contributor license agreements. See the NOTICE file
4 * distributed with this work for additional information
5 * regarding copyright ownership. The ASF licenses this file
6 * to you under the Apache License, Version 2.0 (the  "License");
7 * you may not use this file except in compliance with the License.
8 * You may obtain a copy of the License at
9 *
10 *     http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing, software
13 * distributed under the License is distributed on an "AS IS" BASIS,
14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 * See the License for the specific language governing permissions and
16 * limitations under the License.
17 */
18/*
19 * $Id: SubContextList.java 468655 2006-10-28 07:12:06Z minchau $
20 */
21package org.apache.xpath.axes;
22
23import org.apache.xpath.XPathContext;
24
25/**
26 * A class that implements this interface is a sub context node list, meaning it
27 * is a node list for a location path step for a predicate.
28 * @xsl.usage advanced
29 */
30public interface SubContextList
31{
32
33  /**
34   * Get the number of nodes in the node list, which, in the XSLT 1 based
35   * counting system, is the last index position.
36   *
37   *
38   * @param xctxt The XPath runtime context.
39   *
40   * @return the number of nodes in the node list.
41   */
42  public int getLastPos(XPathContext xctxt);
43
44  /**
45   * Get the current sub-context position.
46   *
47   * @param xctxt The XPath runtime context.
48   *
49   * @return The position of the current node in the list.
50   */
51  public int getProximityPosition(XPathContext xctxt);
52}
53