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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  */
21 package org.apache.xpath.axes;
22 
23 import 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  */
30 public 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    */
getLastPos(XPathContext xctxt)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    */
getProximityPosition(XPathContext xctxt)51   public int getProximityPosition(XPathContext xctxt);
52 }
53