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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: Counter.java 468645 2006-10-28 06:57:24Z minchau $<a name="line.19"></a> |
| <FONT color="green">020</FONT> */<a name="line.20"></a> |
| <FONT color="green">021</FONT> package org.apache.xalan.transformer;<a name="line.21"></a> |
| <FONT color="green">022</FONT> <a name="line.22"></a> |
| <FONT color="green">023</FONT> import javax.xml.transform.TransformerException;<a name="line.23"></a> |
| <FONT color="green">024</FONT> <a name="line.24"></a> |
| <FONT color="green">025</FONT> import org.apache.xalan.templates.ElemNumber;<a name="line.25"></a> |
| <FONT color="green">026</FONT> import org.apache.xml.dtm.DTM;<a name="line.26"></a> |
| <FONT color="green">027</FONT> import org.apache.xpath.NodeSetDTM;<a name="line.27"></a> |
| <FONT color="green">028</FONT> import org.apache.xpath.XPathContext;<a name="line.28"></a> |
| <FONT color="green">029</FONT> <a name="line.29"></a> |
| <FONT color="green">030</FONT> /**<a name="line.30"></a> |
| <FONT color="green">031</FONT> * A class that does incremental counting for support of xsl:number.<a name="line.31"></a> |
| <FONT color="green">032</FONT> * This class stores a cache of counted nodes (m_countNodes).<a name="line.32"></a> |
| <FONT color="green">033</FONT> * It tries to cache the counted nodes in document order...<a name="line.33"></a> |
| <FONT color="green">034</FONT> * the node count is based on its position in the cache list<a name="line.34"></a> |
| <FONT color="green">035</FONT> * @xsl.usage internal<a name="line.35"></a> |
| <FONT color="green">036</FONT> */<a name="line.36"></a> |
| <FONT color="green">037</FONT> public class Counter<a name="line.37"></a> |
| <FONT color="green">038</FONT> {<a name="line.38"></a> |
| <FONT color="green">039</FONT> <a name="line.39"></a> |
| <FONT color="green">040</FONT> /**<a name="line.40"></a> |
| <FONT color="green">041</FONT> * Set the maximum ammount the m_countNodes list can<a name="line.41"></a> |
| <FONT color="green">042</FONT> * grow to.<a name="line.42"></a> |
| <FONT color="green">043</FONT> */<a name="line.43"></a> |
| <FONT color="green">044</FONT> static final int MAXCOUNTNODES = 500;<a name="line.44"></a> |
| <FONT color="green">045</FONT> <a name="line.45"></a> |
| <FONT color="green">046</FONT> /**<a name="line.46"></a> |
| <FONT color="green">047</FONT> * The start count from where m_countNodes counts<a name="line.47"></a> |
| <FONT color="green">048</FONT> * from. In other words, the count of a given node<a name="line.48"></a> |
| <FONT color="green">049</FONT> * in the m_countNodes vector is node position +<a name="line.49"></a> |
| <FONT color="green">050</FONT> * m_countNodesStartCount.<a name="line.50"></a> |
| <FONT color="green">051</FONT> */<a name="line.51"></a> |
| <FONT color="green">052</FONT> int m_countNodesStartCount = 0;<a name="line.52"></a> |
| <FONT color="green">053</FONT> <a name="line.53"></a> |
| <FONT color="green">054</FONT> /**<a name="line.54"></a> |
| <FONT color="green">055</FONT> * A vector of all nodes counted so far.<a name="line.55"></a> |
| <FONT color="green">056</FONT> */<a name="line.56"></a> |
| <FONT color="green">057</FONT> NodeSetDTM m_countNodes;<a name="line.57"></a> |
| <FONT color="green">058</FONT> <a name="line.58"></a> |
| <FONT color="green">059</FONT> /**<a name="line.59"></a> |
| <FONT color="green">060</FONT> * The node from where the counting starts. This is needed to<a name="line.60"></a> |
| <FONT color="green">061</FONT> * find a counter if the node being counted is not immediatly<a name="line.61"></a> |
| <FONT color="green">062</FONT> * found in the m_countNodes vector.<a name="line.62"></a> |
| <FONT color="green">063</FONT> */<a name="line.63"></a> |
| <FONT color="green">064</FONT> int m_fromNode = DTM.NULL;<a name="line.64"></a> |
| <FONT color="green">065</FONT> <a name="line.65"></a> |
| <FONT color="green">066</FONT> /**<a name="line.66"></a> |
| <FONT color="green">067</FONT> * The owning xsl:number element.<a name="line.67"></a> |
| <FONT color="green">068</FONT> */<a name="line.68"></a> |
| <FONT color="green">069</FONT> ElemNumber m_numberElem;<a name="line.69"></a> |
| <FONT color="green">070</FONT> <a name="line.70"></a> |
| <FONT color="green">071</FONT> /**<a name="line.71"></a> |
| <FONT color="green">072</FONT> * Value to store result of last getCount call, for benifit<a name="line.72"></a> |
| <FONT color="green">073</FONT> * of returning val from CountersTable.getCounterByCounted,<a name="line.73"></a> |
| <FONT color="green">074</FONT> * who calls getCount.<a name="line.74"></a> |
| <FONT color="green">075</FONT> */<a name="line.75"></a> |
| <FONT color="green">076</FONT> int m_countResult;<a name="line.76"></a> |
| <FONT color="green">077</FONT> <a name="line.77"></a> |
| <FONT color="green">078</FONT> /**<a name="line.78"></a> |
| <FONT color="green">079</FONT> * Construct a counter object.<a name="line.79"></a> |
| <FONT color="green">080</FONT> *<a name="line.80"></a> |
| <FONT color="green">081</FONT> * @param numberElem The owning xsl:number element. <a name="line.81"></a> |
| <FONT color="green">082</FONT> * @param countNodes A vector of all nodes counted so far.<a name="line.82"></a> |
| <FONT color="green">083</FONT> *<a name="line.83"></a> |
| <FONT color="green">084</FONT> * @throws TransformerException<a name="line.84"></a> |
| <FONT color="green">085</FONT> */<a name="line.85"></a> |
| <FONT color="green">086</FONT> Counter(ElemNumber numberElem, NodeSetDTM countNodes) throws TransformerException<a name="line.86"></a> |
| <FONT color="green">087</FONT> {<a name="line.87"></a> |
| <FONT color="green">088</FONT> m_countNodes = countNodes;<a name="line.88"></a> |
| <FONT color="green">089</FONT> m_numberElem = numberElem;<a name="line.89"></a> |
| <FONT color="green">090</FONT> }<a name="line.90"></a> |
| <FONT color="green">091</FONT> <a name="line.91"></a> |
| <FONT color="green">092</FONT> /**<a name="line.92"></a> |
| <FONT color="green">093</FONT> * Construct a counter object.<a name="line.93"></a> |
| <FONT color="green">094</FONT> *<a name="line.94"></a> |
| <FONT color="green">095</FONT> * @param numberElem The owning xsl:number element. <a name="line.95"></a> |
| <FONT color="green">096</FONT> *<a name="line.96"></a> |
| <FONT color="green">097</FONT> * @throws TransformerException<a name="line.97"></a> |
| <FONT color="green">098</FONT> *<a name="line.98"></a> |
| <FONT color="green">099</FONT> Counter(ElemNumber numberElem) throws TransformerException<a name="line.99"></a> |
| <FONT color="green">100</FONT> {<a name="line.100"></a> |
| <FONT color="green">101</FONT> m_numberElem = numberElem;<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> /**<a name="line.104"></a> |
| <FONT color="green">105</FONT> * Try and find a node that was previously counted. If found,<a name="line.105"></a> |
| <FONT color="green">106</FONT> * return a positive integer that corresponds to the count.<a name="line.106"></a> |
| <FONT color="green">107</FONT> *<a name="line.107"></a> |
| <FONT color="green">108</FONT> * @param support The XPath context to use<a name="line.108"></a> |
| <FONT color="green">109</FONT> * @param node The node to be counted.<a name="line.109"></a> |
| <FONT color="green">110</FONT> * <a name="line.110"></a> |
| <FONT color="green">111</FONT> * @return The count of the node, or -1 if not found.<a name="line.111"></a> |
| <FONT color="green">112</FONT> */<a name="line.112"></a> |
| <FONT color="green">113</FONT> int getPreviouslyCounted(XPathContext support, int node)<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> |
| <FONT color="green">116</FONT> int n = m_countNodes.size();<a name="line.116"></a> |
| <FONT color="green">117</FONT> <a name="line.117"></a> |
| <FONT color="green">118</FONT> m_countResult = 0;<a name="line.118"></a> |
| <FONT color="green">119</FONT> <a name="line.119"></a> |
| <FONT color="green">120</FONT> for (int i = n - 1; i >= 0; i--)<a name="line.120"></a> |
| <FONT color="green">121</FONT> {<a name="line.121"></a> |
| <FONT color="green">122</FONT> int countedNode = m_countNodes.elementAt(i);<a name="line.122"></a> |
| <FONT color="green">123</FONT> <a name="line.123"></a> |
| <FONT color="green">124</FONT> if (node == countedNode)<a name="line.124"></a> |
| <FONT color="green">125</FONT> {<a name="line.125"></a> |
| <FONT color="green">126</FONT> <a name="line.126"></a> |
| <FONT color="green">127</FONT> // Since the list is in backwards order, the count is <a name="line.127"></a> |
| <FONT color="green">128</FONT> // how many are in the rest of the list.<a name="line.128"></a> |
| <FONT color="green">129</FONT> m_countResult = i + 1 + m_countNodesStartCount;<a name="line.129"></a> |
| <FONT color="green">130</FONT> <a name="line.130"></a> |
| <FONT color="green">131</FONT> break;<a name="line.131"></a> |
| <FONT color="green">132</FONT> }<a name="line.132"></a> |
| <FONT color="green">133</FONT> <a name="line.133"></a> |
| <FONT color="green">134</FONT> DTM dtm = support.getDTM(countedNode);<a name="line.134"></a> |
| <FONT color="green">135</FONT> <a name="line.135"></a> |
| <FONT color="green">136</FONT> // Try to see if the given node falls after the counted node...<a name="line.136"></a> |
| <FONT color="green">137</FONT> // if it does, don't keep searching backwards.<a name="line.137"></a> |
| <FONT color="green">138</FONT> if (dtm.isNodeAfter(countedNode, node))<a name="line.138"></a> |
| <FONT color="green">139</FONT> break;<a name="line.139"></a> |
| <FONT color="green">140</FONT> }<a name="line.140"></a> |
| <FONT color="green">141</FONT> <a name="line.141"></a> |
| <FONT color="green">142</FONT> return m_countResult;<a name="line.142"></a> |
| <FONT color="green">143</FONT> }<a name="line.143"></a> |
| <FONT color="green">144</FONT> <a name="line.144"></a> |
| <FONT color="green">145</FONT> /**<a name="line.145"></a> |
| <FONT color="green">146</FONT> * Get the last node in the list.<a name="line.146"></a> |
| <FONT color="green">147</FONT> *<a name="line.147"></a> |
| <FONT color="green">148</FONT> * @return the last node in the list.<a name="line.148"></a> |
| <FONT color="green">149</FONT> */<a name="line.149"></a> |
| <FONT color="green">150</FONT> int getLast()<a name="line.150"></a> |
| <FONT color="green">151</FONT> {<a name="line.151"></a> |
| <FONT color="green">152</FONT> <a name="line.152"></a> |
| <FONT color="green">153</FONT> int size = m_countNodes.size();<a name="line.153"></a> |
| <FONT color="green">154</FONT> <a name="line.154"></a> |
| <FONT color="green">155</FONT> return (size > 0) ? m_countNodes.elementAt(size - 1) : DTM.NULL;<a name="line.155"></a> |
| <FONT color="green">156</FONT> }<a name="line.156"></a> |
| <FONT color="green">157</FONT> }<a name="line.157"></a> |
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| </PRE> |
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