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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: KeyRefIterator.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 java.util.Vector;<a name="line.23"></a> |
| <FONT color="green">024</FONT> <a name="line.24"></a> |
| <FONT color="green">025</FONT> import org.apache.xalan.res.XSLMessages;<a name="line.25"></a> |
| <FONT color="green">026</FONT> import org.apache.xalan.res.XSLTErrorResources;<a name="line.26"></a> |
| <FONT color="green">027</FONT> import org.apache.xalan.templates.KeyDeclaration;<a name="line.27"></a> |
| <FONT color="green">028</FONT> import org.apache.xml.dtm.DTM;<a name="line.28"></a> |
| <FONT color="green">029</FONT> import org.apache.xml.dtm.DTMIterator;<a name="line.29"></a> |
| <FONT color="green">030</FONT> import org.apache.xml.utils.QName;<a name="line.30"></a> |
| <FONT color="green">031</FONT> import org.apache.xml.utils.XMLString;<a name="line.31"></a> |
| <FONT color="green">032</FONT> import org.apache.xpath.objects.XNodeSet;<a name="line.32"></a> |
| <FONT color="green">033</FONT> import org.apache.xpath.objects.XObject;<a name="line.33"></a> |
| <FONT color="green">034</FONT> <a name="line.34"></a> |
| <FONT color="green">035</FONT> /**<a name="line.35"></a> |
| <FONT color="green">036</FONT> * This class filters nodes from a key iterator, according to <a name="line.36"></a> |
| <FONT color="green">037</FONT> * whether or not the use value matches the ref value. <a name="line.37"></a> |
| <FONT color="green">038</FONT> * @xsl.usage internal<a name="line.38"></a> |
| <FONT color="green">039</FONT> */<a name="line.39"></a> |
| <FONT color="green">040</FONT> public class KeyRefIterator extends org.apache.xpath.axes.ChildTestIterator<a name="line.40"></a> |
| <FONT color="green">041</FONT> {<a name="line.41"></a> |
| <FONT color="green">042</FONT> static final long serialVersionUID = 3837456451659435102L;<a name="line.42"></a> |
| <FONT color="green">043</FONT> /**<a name="line.43"></a> |
| <FONT color="green">044</FONT> * Constructor KeyRefIterator<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> * @param ref Key value to match<a name="line.47"></a> |
| <FONT color="green">048</FONT> * @param ki The main key iterator used to walk the source tree <a name="line.48"></a> |
| <FONT color="green">049</FONT> */<a name="line.49"></a> |
| <FONT color="green">050</FONT> public KeyRefIterator(QName name, XMLString ref, Vector keyDecls, DTMIterator ki)<a name="line.50"></a> |
| <FONT color="green">051</FONT> {<a name="line.51"></a> |
| <FONT color="green">052</FONT> super(null);<a name="line.52"></a> |
| <FONT color="green">053</FONT> m_name = name;<a name="line.53"></a> |
| <FONT color="green">054</FONT> m_ref = ref;<a name="line.54"></a> |
| <FONT color="green">055</FONT> m_keyDeclarations = keyDecls;<a name="line.55"></a> |
| <FONT color="green">056</FONT> m_keysNodes = ki;<a name="line.56"></a> |
| <FONT color="green">057</FONT> setWhatToShow(org.apache.xml.dtm.DTMFilter.SHOW_ALL);<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> DTMIterator m_keysNodes;<a name="line.60"></a> |
| <FONT color="green">061</FONT> <a name="line.61"></a> |
| <FONT color="green">062</FONT> /**<a name="line.62"></a> |
| <FONT color="green">063</FONT> * Get the next node via getNextXXX. Bottlenecked for derived class override.<a name="line.63"></a> |
| <FONT color="green">064</FONT> * @return The next node on the axis, or DTM.NULL.<a name="line.64"></a> |
| <FONT color="green">065</FONT> */<a name="line.65"></a> |
| <FONT color="green">066</FONT> protected int getNextNode()<a name="line.66"></a> |
| <FONT color="green">067</FONT> { <a name="line.67"></a> |
| <FONT color="green">068</FONT> int next; <a name="line.68"></a> |
| <FONT color="green">069</FONT> while(DTM.NULL != (next = m_keysNodes.nextNode()))<a name="line.69"></a> |
| <FONT color="green">070</FONT> {<a name="line.70"></a> |
| <FONT color="green">071</FONT> if(DTMIterator.FILTER_ACCEPT == filterNode(next))<a name="line.71"></a> |
| <FONT color="green">072</FONT> break;<a name="line.72"></a> |
| <FONT color="green">073</FONT> }<a name="line.73"></a> |
| <FONT color="green">074</FONT> m_lastFetched = next;<a name="line.74"></a> |
| <FONT color="green">075</FONT> <a name="line.75"></a> |
| <FONT color="green">076</FONT> return next;<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> <a name="line.79"></a> |
| <FONT color="green">080</FONT> /**<a name="line.80"></a> |
| <FONT color="green">081</FONT> * Test whether a specified node is visible in the logical view of a<a name="line.81"></a> |
| <FONT color="green">082</FONT> * TreeWalker or NodeIterator. This function will be called by the<a name="line.82"></a> |
| <FONT color="green">083</FONT> * implementation of TreeWalker and NodeIterator; it is not intended to<a name="line.83"></a> |
| <FONT color="green">084</FONT> * be called directly from user code.<a name="line.84"></a> |
| <FONT color="green">085</FONT> * <a name="line.85"></a> |
| <FONT color="green">086</FONT> * @param testNode The node to check to see if it passes the filter or not.<a name="line.86"></a> |
| <FONT color="green">087</FONT> *<a name="line.87"></a> |
| <FONT color="green">088</FONT> * @return a constant to determine whether the node is accepted,<a name="line.88"></a> |
| <FONT color="green">089</FONT> * rejected, or skipped, as defined above .<a name="line.89"></a> |
| <FONT color="green">090</FONT> */<a name="line.90"></a> |
| <FONT color="green">091</FONT> public short filterNode(int testNode)<a name="line.91"></a> |
| <FONT color="green">092</FONT> {<a name="line.92"></a> |
| <FONT color="green">093</FONT> boolean foundKey = false;<a name="line.93"></a> |
| <FONT color="green">094</FONT> Vector keys = m_keyDeclarations;<a name="line.94"></a> |
| <FONT color="green">095</FONT> <a name="line.95"></a> |
| <FONT color="green">096</FONT> QName name = m_name;<a name="line.96"></a> |
| <FONT color="green">097</FONT> KeyIterator ki = (KeyIterator)(((XNodeSet)m_keysNodes).getContainedIter());<a name="line.97"></a> |
| <FONT color="green">098</FONT> org.apache.xpath.XPathContext xctxt = ki.getXPathContext();<a name="line.98"></a> |
| <FONT color="green">099</FONT> <a name="line.99"></a> |
| <FONT color="green">100</FONT> if(null == xctxt)<a name="line.100"></a> |
| <FONT color="green">101</FONT> assertion(false, "xctxt can not be null here!");<a name="line.101"></a> |
| <FONT color="green">102</FONT> <a name="line.102"></a> |
| <FONT color="green">103</FONT> try<a name="line.103"></a> |
| <FONT color="green">104</FONT> {<a name="line.104"></a> |
| <FONT color="green">105</FONT> XMLString lookupKey = m_ref;<a name="line.105"></a> |
| <FONT color="green">106</FONT> <a name="line.106"></a> |
| <FONT color="green">107</FONT> // System.out.println("lookupKey: "+lookupKey);<a name="line.107"></a> |
| <FONT color="green">108</FONT> int nDeclarations = keys.size();<a name="line.108"></a> |
| <FONT color="green">109</FONT> <a name="line.109"></a> |
| <FONT color="green">110</FONT> // Walk through each of the declarations made with xsl:key<a name="line.110"></a> |
| <FONT color="green">111</FONT> for (int i = 0; i < nDeclarations; i++)<a name="line.111"></a> |
| <FONT color="green">112</FONT> {<a name="line.112"></a> |
| <FONT color="green">113</FONT> KeyDeclaration kd = (KeyDeclaration) keys.elementAt(i);<a name="line.113"></a> |
| <FONT color="green">114</FONT> <a name="line.114"></a> |
| <FONT color="green">115</FONT> // Only continue if the name on this key declaration<a name="line.115"></a> |
| <FONT color="green">116</FONT> // matches the name on the iterator for this walker. <a name="line.116"></a> |
| <FONT color="green">117</FONT> if (!kd.getName().equals(name))<a name="line.117"></a> |
| <FONT color="green">118</FONT> continue;<a name="line.118"></a> |
| <FONT color="green">119</FONT> <a name="line.119"></a> |
| <FONT color="green">120</FONT> foundKey = true;<a name="line.120"></a> |
| <FONT color="green">121</FONT> // xctxt.setNamespaceContext(ki.getPrefixResolver());<a name="line.121"></a> |
| <FONT color="green">122</FONT> <a name="line.122"></a> |
| <FONT color="green">123</FONT> // Query from the node, according the the select pattern in the<a name="line.123"></a> |
| <FONT color="green">124</FONT> // use attribute in xsl:key.<a name="line.124"></a> |
| <FONT color="green">125</FONT> XObject xuse = kd.getUse().execute(xctxt, testNode, ki.getPrefixResolver());<a name="line.125"></a> |
| <FONT color="green">126</FONT> <a name="line.126"></a> |
| <FONT color="green">127</FONT> if (xuse.getType() != xuse.CLASS_NODESET)<a name="line.127"></a> |
| <FONT color="green">128</FONT> {<a name="line.128"></a> |
| <FONT color="green">129</FONT> XMLString exprResult = xuse.xstr();<a name="line.129"></a> |
| <FONT color="green">130</FONT> <a name="line.130"></a> |
| <FONT color="green">131</FONT> if (lookupKey.equals(exprResult))<a name="line.131"></a> |
| <FONT color="green">132</FONT> return DTMIterator.FILTER_ACCEPT;<a name="line.132"></a> |
| <FONT color="green">133</FONT> }<a name="line.133"></a> |
| <FONT color="green">134</FONT> else<a name="line.134"></a> |
| <FONT color="green">135</FONT> {<a name="line.135"></a> |
| <FONT color="green">136</FONT> DTMIterator nl = ((XNodeSet)xuse).iterRaw();<a name="line.136"></a> |
| <FONT color="green">137</FONT> int useNode;<a name="line.137"></a> |
| <FONT color="green">138</FONT> <a name="line.138"></a> |
| <FONT color="green">139</FONT> while (DTM.NULL != (useNode = nl.nextNode()))<a name="line.139"></a> |
| <FONT color="green">140</FONT> {<a name="line.140"></a> |
| <FONT color="green">141</FONT> DTM dtm = getDTM(useNode);<a name="line.141"></a> |
| <FONT color="green">142</FONT> XMLString exprResult = dtm.getStringValue(useNode);<a name="line.142"></a> |
| <FONT color="green">143</FONT> if ((null != exprResult) && lookupKey.equals(exprResult))<a name="line.143"></a> |
| <FONT color="green">144</FONT> return DTMIterator.FILTER_ACCEPT;<a name="line.144"></a> |
| <FONT color="green">145</FONT> }<a name="line.145"></a> |
| <FONT color="green">146</FONT> }<a name="line.146"></a> |
| <FONT color="green">147</FONT> <a name="line.147"></a> |
| <FONT color="green">148</FONT> } // end for(int i = 0; i < nDeclarations; i++)<a name="line.148"></a> |
| <FONT color="green">149</FONT> }<a name="line.149"></a> |
| <FONT color="green">150</FONT> catch (javax.xml.transform.TransformerException te)<a name="line.150"></a> |
| <FONT color="green">151</FONT> {<a name="line.151"></a> |
| <FONT color="green">152</FONT> throw new org.apache.xml.utils.WrappedRuntimeException(te);<a name="line.152"></a> |
| <FONT color="green">153</FONT> }<a name="line.153"></a> |
| <FONT color="green">154</FONT> <a name="line.154"></a> |
| <FONT color="green">155</FONT> if (!foundKey)<a name="line.155"></a> |
| <FONT color="green">156</FONT> throw new RuntimeException(<a name="line.156"></a> |
| <FONT color="green">157</FONT> XSLMessages.createMessage(<a name="line.157"></a> |
| <FONT color="green">158</FONT> XSLTErrorResources.ER_NO_XSLKEY_DECLARATION,<a name="line.158"></a> |
| <FONT color="green">159</FONT> new Object[] { name.getLocalName()}));<a name="line.159"></a> |
| <FONT color="green">160</FONT> return DTMIterator.FILTER_REJECT;<a name="line.160"></a> |
| <FONT color="green">161</FONT> }<a name="line.161"></a> |
| <FONT color="green">162</FONT> <a name="line.162"></a> |
| <FONT color="green">163</FONT> protected XMLString m_ref;<a name="line.163"></a> |
| <FONT color="green">164</FONT> protected QName m_name;<a name="line.164"></a> |
| <FONT color="green">165</FONT> <a name="line.165"></a> |
| <FONT color="green">166</FONT> /** Vector of Key declarations in the stylesheet.<a name="line.166"></a> |
| <FONT color="green">167</FONT> * @serial */<a name="line.167"></a> |
| <FONT color="green">168</FONT> protected Vector m_keyDeclarations;<a name="line.168"></a> |
| <FONT color="green">169</FONT> <a name="line.169"></a> |
| <FONT color="green">170</FONT> }<a name="line.170"></a> |
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| </PRE> |
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