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| <FONT color="green">001</FONT> /*<a name="line.1"></a> |
| <FONT color="green">002</FONT> * Licensed to the Apache Software Foundation (ASF) under one<a name="line.2"></a> |
| <FONT color="green">003</FONT> * or more contributor license agreements. See the NOTICE file<a name="line.3"></a> |
| <FONT color="green">004</FONT> * distributed with this work for additional information<a name="line.4"></a> |
| <FONT color="green">005</FONT> * regarding copyright ownership. The ASF licenses this file<a name="line.5"></a> |
| <FONT color="green">006</FONT> * to you under the Apache License, Version 2.0 (the "License");<a name="line.6"></a> |
| <FONT color="green">007</FONT> * you may not use this file except in compliance with the License.<a name="line.7"></a> |
| <FONT color="green">008</FONT> * You may obtain a copy of the License at<a name="line.8"></a> |
| <FONT color="green">009</FONT> *<a name="line.9"></a> |
| <FONT color="green">010</FONT> * http://www.apache.org/licenses/LICENSE-2.0<a name="line.10"></a> |
| <FONT color="green">011</FONT> *<a name="line.11"></a> |
| <FONT color="green">012</FONT> * Unless required by applicable law or agreed to in writing, software<a name="line.12"></a> |
| <FONT color="green">013</FONT> * distributed under the License is distributed on an "AS IS" BASIS,<a name="line.13"></a> |
| <FONT color="green">014</FONT> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.<a name="line.14"></a> |
| <FONT color="green">015</FONT> * See the License for the specific language governing permissions and<a name="line.15"></a> |
| <FONT color="green">016</FONT> * limitations under the License.<a name="line.16"></a> |
| <FONT color="green">017</FONT> */<a name="line.17"></a> |
| <FONT color="green">018</FONT> /*<a name="line.18"></a> |
| <FONT color="green">019</FONT> * $Id: NthIterator.java 468651 2006-10-28 07:04:25Z minchau $<a name="line.19"></a> |
| <FONT color="green">020</FONT> */<a name="line.20"></a> |
| <FONT color="green">021</FONT> <a name="line.21"></a> |
| <FONT color="green">022</FONT> package org.apache.xalan.xsltc.dom;<a name="line.22"></a> |
| <FONT color="green">023</FONT> <a name="line.23"></a> |
| <FONT color="green">024</FONT> import org.apache.xalan.xsltc.runtime.BasisLibrary;<a name="line.24"></a> |
| <FONT color="green">025</FONT> import org.apache.xml.dtm.DTMAxisIterator;<a name="line.25"></a> |
| <FONT color="green">026</FONT> import org.apache.xml.dtm.ref.DTMAxisIteratorBase;<a name="line.26"></a> |
| <FONT color="green">027</FONT> <a name="line.27"></a> |
| <FONT color="green">028</FONT> /**<a name="line.28"></a> |
| <FONT color="green">029</FONT> * @author Jacek Ambroziak<a name="line.29"></a> |
| <FONT color="green">030</FONT> * @author Morten Jorgensen<a name="line.30"></a> |
| <FONT color="green">031</FONT> */<a name="line.31"></a> |
| <FONT color="green">032</FONT> public final class NthIterator extends DTMAxisIteratorBase {<a name="line.32"></a> |
| <FONT color="green">033</FONT> // ...[N]<a name="line.33"></a> |
| <FONT color="green">034</FONT> private DTMAxisIterator _source;<a name="line.34"></a> |
| <FONT color="green">035</FONT> private final int _position;<a name="line.35"></a> |
| <FONT color="green">036</FONT> private boolean _ready;<a name="line.36"></a> |
| <FONT color="green">037</FONT> <a name="line.37"></a> |
| <FONT color="green">038</FONT> public NthIterator(DTMAxisIterator source, int n) {<a name="line.38"></a> |
| <FONT color="green">039</FONT> _source = source;<a name="line.39"></a> |
| <FONT color="green">040</FONT> _position = n;<a name="line.40"></a> |
| <FONT color="green">041</FONT> }<a name="line.41"></a> |
| <FONT color="green">042</FONT> <a name="line.42"></a> |
| <FONT color="green">043</FONT> public void setRestartable(boolean isRestartable) {<a name="line.43"></a> |
| <FONT color="green">044</FONT> _isRestartable = isRestartable;<a name="line.44"></a> |
| <FONT color="green">045</FONT> _source.setRestartable(isRestartable);<a name="line.45"></a> |
| <FONT color="green">046</FONT> }<a name="line.46"></a> |
| <FONT color="green">047</FONT> <a name="line.47"></a> |
| <FONT color="green">048</FONT> public DTMAxisIterator cloneIterator() {<a name="line.48"></a> |
| <FONT color="green">049</FONT> try {<a name="line.49"></a> |
| <FONT color="green">050</FONT> final NthIterator clone = (NthIterator) super.clone();<a name="line.50"></a> |
| <FONT color="green">051</FONT> clone._source = _source.cloneIterator(); // resets source<a name="line.51"></a> |
| <FONT color="green">052</FONT> clone._isRestartable = false;<a name="line.52"></a> |
| <FONT color="green">053</FONT> return clone;<a name="line.53"></a> |
| <FONT color="green">054</FONT> }<a name="line.54"></a> |
| <FONT color="green">055</FONT> catch (CloneNotSupportedException e) {<a name="line.55"></a> |
| <FONT color="green">056</FONT> BasisLibrary.runTimeError(BasisLibrary.ITERATOR_CLONE_ERR,<a name="line.56"></a> |
| <FONT color="green">057</FONT> e.toString());<a name="line.57"></a> |
| <FONT color="green">058</FONT> return null;<a name="line.58"></a> |
| <FONT color="green">059</FONT> }<a name="line.59"></a> |
| <FONT color="green">060</FONT> }<a name="line.60"></a> |
| <FONT color="green">061</FONT> <a name="line.61"></a> |
| <FONT color="green">062</FONT> public int next() {<a name="line.62"></a> |
| <FONT color="green">063</FONT> if (_ready) {<a name="line.63"></a> |
| <FONT color="green">064</FONT> _ready = false;<a name="line.64"></a> |
| <FONT color="green">065</FONT> return _source.getNodeByPosition(_position);<a name="line.65"></a> |
| <FONT color="green">066</FONT> }<a name="line.66"></a> |
| <FONT color="green">067</FONT> return DTMAxisIterator.END;<a name="line.67"></a> |
| <FONT color="green">068</FONT> /*<a name="line.68"></a> |
| <FONT color="green">069</FONT> if (_ready && _position > 0) {<a name="line.69"></a> |
| <FONT color="green">070</FONT> final int pos = _source.isReverse()<a name="line.70"></a> |
| <FONT color="green">071</FONT> ? _source.getLast() - _position + 1<a name="line.71"></a> |
| <FONT color="green">072</FONT> : _position;<a name="line.72"></a> |
| <FONT color="green">073</FONT> <a name="line.73"></a> |
| <FONT color="green">074</FONT> _ready = false;<a name="line.74"></a> |
| <FONT color="green">075</FONT> int node;<a name="line.75"></a> |
| <FONT color="green">076</FONT> while ((node = _source.next()) != DTMAxisIterator.END) {<a name="line.76"></a> |
| <FONT color="green">077</FONT> if (pos == _source.getPosition()) {<a name="line.77"></a> |
| <FONT color="green">078</FONT> return node;<a name="line.78"></a> |
| <FONT color="green">079</FONT> }<a name="line.79"></a> |
| <FONT color="green">080</FONT> }<a name="line.80"></a> |
| <FONT color="green">081</FONT> }<a name="line.81"></a> |
| <FONT color="green">082</FONT> return DTMAxisIterator.END;<a name="line.82"></a> |
| <FONT color="green">083</FONT> */<a name="line.83"></a> |
| <FONT color="green">084</FONT> }<a name="line.84"></a> |
| <FONT color="green">085</FONT> <a name="line.85"></a> |
| <FONT color="green">086</FONT> public DTMAxisIterator setStartNode(final int node) {<a name="line.86"></a> |
| <FONT color="green">087</FONT> if (_isRestartable) {<a name="line.87"></a> |
| <FONT color="green">088</FONT> _source.setStartNode(node);<a name="line.88"></a> |
| <FONT color="green">089</FONT> _ready = true;<a name="line.89"></a> |
| <FONT color="green">090</FONT> }<a name="line.90"></a> |
| <FONT color="green">091</FONT> return this;<a name="line.91"></a> |
| <FONT color="green">092</FONT> }<a name="line.92"></a> |
| <FONT color="green">093</FONT> <a name="line.93"></a> |
| <FONT color="green">094</FONT> public DTMAxisIterator reset() {<a name="line.94"></a> |
| <FONT color="green">095</FONT> _source.reset();<a name="line.95"></a> |
| <FONT color="green">096</FONT> _ready = true;<a name="line.96"></a> |
| <FONT color="green">097</FONT> return this;<a name="line.97"></a> |
| <FONT color="green">098</FONT> }<a name="line.98"></a> |
| <FONT color="green">099</FONT> <a name="line.99"></a> |
| <FONT color="green">100</FONT> public int getLast() {<a name="line.100"></a> |
| <FONT color="green">101</FONT> return 1;<a name="line.101"></a> |
| <FONT color="green">102</FONT> }<a name="line.102"></a> |
| <FONT color="green">103</FONT> <a name="line.103"></a> |
| <FONT color="green">104</FONT> public int getPosition() {<a name="line.104"></a> |
| <FONT color="green">105</FONT> return 1;<a name="line.105"></a> |
| <FONT color="green">106</FONT> }<a name="line.106"></a> |
| <FONT color="green">107</FONT> <a name="line.107"></a> |
| <FONT color="green">108</FONT> public void setMark() {<a name="line.108"></a> |
| <FONT color="green">109</FONT> _source.setMark();<a name="line.109"></a> |
| <FONT color="green">110</FONT> }<a name="line.110"></a> |
| <FONT color="green">111</FONT> <a name="line.111"></a> |
| <FONT color="green">112</FONT> public void gotoMark() {<a name="line.112"></a> |
| <FONT color="green">113</FONT> _source.gotoMark();<a name="line.113"></a> |
| <FONT color="green">114</FONT> }<a name="line.114"></a> |
| <FONT color="green">115</FONT> }<a name="line.115"></a> |
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| </PRE> |
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