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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    */
     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