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Java > Open Source Codes > org > apache > xpath > axes > SubContextList


1 /*
2  * Copyright 1999-2004 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  * $Id: SubContextList.java,v 1.9 2004/02/17 04:32:08 minchau Exp $
18  */
19 package org.apache.xpath.axes;
20
21 import org.apache.xpath.XPathContext;
22  
23 /**
24  * A class that implements this interface is a sub context node list, meaning it
25  * is a node list for a location path step for a predicate.
26  * @xsl.usage advanced
27  */
28 public interface SubContextList
29 {
30
31   /**
32    * Get the number of nodes in the node list, which, in the XSLT 1 based
33    * counting system, is the last index position.
34    *
35    *
36    * @param xctxt The XPath runtime context.
37    *
38    * @return the number of nodes in the node list.
39    */
40   public int getLastPos(XPathContext xctxt);
41
42   /**
43    * Get the current sub-context position.
44    *
45    * @param xctxt The XPath runtime context.
46    *
47    * @return The position of the current node in the list.
48    */
49   public int getProximityPosition(XPathContext xctxt);
50 }
51
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