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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: KeyIndex.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 java.util.StringTokenizer;<a name="line.24"></a> |
| <FONT color="green">025</FONT> <a name="line.25"></a> |
| <FONT color="green">026</FONT> import org.apache.xalan.xsltc.DOM;<a name="line.26"></a> |
| <FONT color="green">027</FONT> import org.apache.xalan.xsltc.DOMEnhancedForDTM;<a name="line.27"></a> |
| <FONT color="green">028</FONT> import org.apache.xalan.xsltc.runtime.BasisLibrary;<a name="line.28"></a> |
| <FONT color="green">029</FONT> import org.apache.xalan.xsltc.runtime.Hashtable;<a name="line.29"></a> |
| <FONT color="green">030</FONT> import org.apache.xalan.xsltc.util.IntegerArray;<a name="line.30"></a> |
| <FONT color="green">031</FONT> <a name="line.31"></a> |
| <FONT color="green">032</FONT> import org.apache.xml.dtm.Axis;<a name="line.32"></a> |
| <FONT color="green">033</FONT> import org.apache.xml.dtm.DTM;<a name="line.33"></a> |
| <FONT color="green">034</FONT> import org.apache.xml.dtm.DTMAxisIterator;<a name="line.34"></a> |
| <FONT color="green">035</FONT> import org.apache.xml.dtm.ref.DTMAxisIteratorBase;<a name="line.35"></a> |
| <FONT color="green">036</FONT> <a name="line.36"></a> |
| <FONT color="green">037</FONT> /**<a name="line.37"></a> |
| <FONT color="green">038</FONT> * Stores mappings of key values or IDs to DTM nodes.<a name="line.38"></a> |
| <FONT color="green">039</FONT> * <em>Use of an instance of this class as a {@link DTMAxisIterator} is<a name="line.39"></a> |
| <FONT color="green">040</FONT> * <b>deprecated.</b></em><a name="line.40"></a> |
| <FONT color="green">041</FONT> * @author Morten Jorgensen<a name="line.41"></a> |
| <FONT color="green">042</FONT> * @author Santiago Pericas-Geertsen<a name="line.42"></a> |
| <FONT color="green">043</FONT> */<a name="line.43"></a> |
| <FONT color="green">044</FONT> public class KeyIndex extends DTMAxisIteratorBase {<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> * A mapping between values and nodesets for the current document. Used<a name="line.47"></a> |
| <FONT color="green">048</FONT> * only while building keys.<a name="line.48"></a> |
| <FONT color="green">049</FONT> */<a name="line.49"></a> |
| <FONT color="green">050</FONT> private Hashtable _index;<a name="line.50"></a> |
| <FONT color="green">051</FONT> <a name="line.51"></a> |
| <FONT color="green">052</FONT> /**<a name="line.52"></a> |
| <FONT color="green">053</FONT> * The document node currently being processed. Used only while building<a name="line.53"></a> |
| <FONT color="green">054</FONT> * keys.<a name="line.54"></a> |
| <FONT color="green">055</FONT> */<a name="line.55"></a> |
| <FONT color="green">056</FONT> private int _currentDocumentNode = DTM.NULL;<a name="line.56"></a> |
| <FONT color="green">057</FONT> <a name="line.57"></a> |
| <FONT color="green">058</FONT> /**<a name="line.58"></a> |
| <FONT color="green">059</FONT> * A mapping from a document node to the mapping between values and nodesets<a name="line.59"></a> |
| <FONT color="green">060</FONT> */<a name="line.60"></a> |
| <FONT color="green">061</FONT> private Hashtable _rootToIndexMap = new Hashtable();<a name="line.61"></a> |
| <FONT color="green">062</FONT> <a name="line.62"></a> |
| <FONT color="green">063</FONT> /**<a name="line.63"></a> |
| <FONT color="green">064</FONT> * The node set associated to the current value passed<a name="line.64"></a> |
| <FONT color="green">065</FONT> * to lookupKey();<a name="line.65"></a> |
| <FONT color="green">066</FONT> */<a name="line.66"></a> |
| <FONT color="green">067</FONT> private IntegerArray _nodes = null;<a name="line.67"></a> |
| <FONT color="green">068</FONT> <a name="line.68"></a> |
| <FONT color="green">069</FONT> /**<a name="line.69"></a> |
| <FONT color="green">070</FONT> * The XSLTC DOM object if this KeyIndex is being used to implement the<a name="line.70"></a> |
| <FONT color="green">071</FONT> * id() function.<a name="line.71"></a> |
| <FONT color="green">072</FONT> */<a name="line.72"></a> |
| <FONT color="green">073</FONT> private DOM _dom;<a name="line.73"></a> |
| <FONT color="green">074</FONT> <a name="line.74"></a> |
| <FONT color="green">075</FONT> private DOMEnhancedForDTM _enhancedDOM;<a name="line.75"></a> |
| <FONT color="green">076</FONT> <a name="line.76"></a> |
| <FONT color="green">077</FONT> /**<a name="line.77"></a> |
| <FONT color="green">078</FONT> * Store position after call to setMark()<a name="line.78"></a> |
| <FONT color="green">079</FONT> */<a name="line.79"></a> |
| <FONT color="green">080</FONT> private int _markedPosition = 0;<a name="line.80"></a> |
| <FONT color="green">081</FONT> <a name="line.81"></a> |
| <FONT color="green">082</FONT> public KeyIndex(int dummy) {<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> public void setRestartable(boolean flag) {<a name="line.85"></a> |
| <FONT color="green">086</FONT> }<a name="line.86"></a> |
| <FONT color="green">087</FONT> <a name="line.87"></a> |
| <FONT color="green">088</FONT> /**<a name="line.88"></a> |
| <FONT color="green">089</FONT> * Adds a node to the node list for a given value. Nodes will<a name="line.89"></a> |
| <FONT color="green">090</FONT> * always be added in document order.<a name="line.90"></a> |
| <FONT color="green">091</FONT> */<a name="line.91"></a> |
| <FONT color="green">092</FONT> public void add(Object value, int node, int rootNode) {<a name="line.92"></a> |
| <FONT color="green">093</FONT> if (_currentDocumentNode != rootNode) {<a name="line.93"></a> |
| <FONT color="green">094</FONT> _currentDocumentNode = rootNode;<a name="line.94"></a> |
| <FONT color="green">095</FONT> _index = new Hashtable();<a name="line.95"></a> |
| <FONT color="green">096</FONT> _rootToIndexMap.put(new Integer(rootNode), _index);<a name="line.96"></a> |
| <FONT color="green">097</FONT> }<a name="line.97"></a> |
| <FONT color="green">098</FONT> <a name="line.98"></a> |
| <FONT color="green">099</FONT> IntegerArray nodes = (IntegerArray) _index.get(value);<a name="line.99"></a> |
| <FONT color="green">100</FONT> <a name="line.100"></a> |
| <FONT color="green">101</FONT> if (nodes == null) {<a name="line.101"></a> |
| <FONT color="green">102</FONT> nodes = new IntegerArray();<a name="line.102"></a> |
| <FONT color="green">103</FONT> _index.put(value, nodes);<a name="line.103"></a> |
| <FONT color="green">104</FONT> nodes.add(node);<a name="line.104"></a> |
| <FONT color="green">105</FONT> <a name="line.105"></a> |
| <FONT color="green">106</FONT> // Because nodes are added in document order,<a name="line.106"></a> |
| <FONT color="green">107</FONT> // duplicates can be eliminated easily at this stage.<a name="line.107"></a> |
| <FONT color="green">108</FONT> } else if (node != nodes.at(nodes.cardinality() - 1)) {<a name="line.108"></a> |
| <FONT color="green">109</FONT> nodes.add(node);<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> <a name="line.112"></a> |
| <FONT color="green">113</FONT> /**<a name="line.113"></a> |
| <FONT color="green">114</FONT> * Merge the current value's nodeset set by lookupKey() with _nodes.<a name="line.114"></a> |
| <FONT color="green">115</FONT> * @deprecated<a name="line.115"></a> |
| <FONT color="green">116</FONT> */<a name="line.116"></a> |
| <FONT color="green">117</FONT> public void merge(KeyIndex other) {<a name="line.117"></a> |
| <FONT color="green">118</FONT> if (other == null) return;<a name="line.118"></a> |
| <FONT color="green">119</FONT> <a name="line.119"></a> |
| <FONT color="green">120</FONT> if (other._nodes != null) {<a name="line.120"></a> |
| <FONT color="green">121</FONT> if (_nodes == null) {<a name="line.121"></a> |
| <FONT color="green">122</FONT> _nodes = (IntegerArray)other._nodes.clone();<a name="line.122"></a> |
| <FONT color="green">123</FONT> }<a name="line.123"></a> |
| <FONT color="green">124</FONT> else {<a name="line.124"></a> |
| <FONT color="green">125</FONT> _nodes.merge(other._nodes);<a name="line.125"></a> |
| <FONT color="green">126</FONT> }<a name="line.126"></a> |
| <FONT color="green">127</FONT> }<a name="line.127"></a> |
| <FONT color="green">128</FONT> }<a name="line.128"></a> |
| <FONT color="green">129</FONT> <a name="line.129"></a> |
| <FONT color="green">130</FONT> /**<a name="line.130"></a> |
| <FONT color="green">131</FONT> * This method must be called by the code generated by the id() function<a name="line.131"></a> |
| <FONT color="green">132</FONT> * prior to returning the node iterator. The lookup code for key() and<a name="line.132"></a> |
| <FONT color="green">133</FONT> * id() differ in the way the lookup value can be whitespace separated<a name="line.133"></a> |
| <FONT color="green">134</FONT> * list of tokens for the id() function, but a single string for the<a name="line.134"></a> |
| <FONT color="green">135</FONT> * key() function.<a name="line.135"></a> |
| <FONT color="green">136</FONT> * @deprecated<a name="line.136"></a> |
| <FONT color="green">137</FONT> */<a name="line.137"></a> |
| <FONT color="green">138</FONT> public void lookupId(Object value) {<a name="line.138"></a> |
| <FONT color="green">139</FONT> // Clear _nodes array<a name="line.139"></a> |
| <FONT color="green">140</FONT> _nodes = null;<a name="line.140"></a> |
| <FONT color="green">141</FONT> <a name="line.141"></a> |
| <FONT color="green">142</FONT> final StringTokenizer values = new StringTokenizer((String) value,<a name="line.142"></a> |
| <FONT color="green">143</FONT> " \n\t");<a name="line.143"></a> |
| <FONT color="green">144</FONT> while (values.hasMoreElements()) {<a name="line.144"></a> |
| <FONT color="green">145</FONT> final String token = (String) values.nextElement();<a name="line.145"></a> |
| <FONT color="green">146</FONT> IntegerArray nodes = (IntegerArray) _index.get(token);<a name="line.146"></a> |
| <FONT color="green">147</FONT> <a name="line.147"></a> |
| <FONT color="green">148</FONT> if (nodes == null && _enhancedDOM != null<a name="line.148"></a> |
| <FONT color="green">149</FONT> && _enhancedDOM.hasDOMSource()) {<a name="line.149"></a> |
| <FONT color="green">150</FONT> nodes = getDOMNodeById(token);<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> if (nodes == null) continue;<a name="line.153"></a> |
| <FONT color="green">154</FONT> <a name="line.154"></a> |
| <FONT color="green">155</FONT> if (_nodes == null) {<a name="line.155"></a> |
| <FONT color="green">156</FONT> nodes = (IntegerArray)nodes.clone();<a name="line.156"></a> |
| <FONT color="green">157</FONT> _nodes = nodes;<a name="line.157"></a> |
| <FONT color="green">158</FONT> }<a name="line.158"></a> |
| <FONT color="green">159</FONT> else {<a name="line.159"></a> |
| <FONT color="green">160</FONT> _nodes.merge(nodes);<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> }<a name="line.163"></a> |
| <FONT color="green">164</FONT> <a name="line.164"></a> |
| <FONT color="green">165</FONT> /**<a name="line.165"></a> |
| <FONT color="green">166</FONT> * Return an IntegerArray for the DOM Node which has the given id.<a name="line.166"></a> |
| <FONT color="green">167</FONT> * <a name="line.167"></a> |
| <FONT color="green">168</FONT> * @param id The id<a name="line.168"></a> |
| <FONT color="green">169</FONT> * @return A IntegerArray representing the Node whose id is the given value.<a name="line.169"></a> |
| <FONT color="green">170</FONT> */<a name="line.170"></a> |
| <FONT color="green">171</FONT> public IntegerArray getDOMNodeById(String id) {<a name="line.171"></a> |
| <FONT color="green">172</FONT> IntegerArray nodes = null;<a name="line.172"></a> |
| <FONT color="green">173</FONT> <a name="line.173"></a> |
| <FONT color="green">174</FONT> if (_enhancedDOM != null) {<a name="line.174"></a> |
| <FONT color="green">175</FONT> int ident = _enhancedDOM.getElementById(id);<a name="line.175"></a> |
| <FONT color="green">176</FONT> <a name="line.176"></a> |
| <FONT color="green">177</FONT> if (ident != DTM.NULL) {<a name="line.177"></a> |
| <FONT color="green">178</FONT> Integer root = new Integer(_enhancedDOM.getDocument());<a name="line.178"></a> |
| <FONT color="green">179</FONT> Hashtable index = (Hashtable) _rootToIndexMap.get(root);<a name="line.179"></a> |
| <FONT color="green">180</FONT> <a name="line.180"></a> |
| <FONT color="green">181</FONT> if (index == null) {<a name="line.181"></a> |
| <FONT color="green">182</FONT> index = new Hashtable();<a name="line.182"></a> |
| <FONT color="green">183</FONT> _rootToIndexMap.put(root, index);<a name="line.183"></a> |
| <FONT color="green">184</FONT> } else {<a name="line.184"></a> |
| <FONT color="green">185</FONT> nodes = (IntegerArray) index.get(id);<a name="line.185"></a> |
| <FONT color="green">186</FONT> }<a name="line.186"></a> |
| <FONT color="green">187</FONT> <a name="line.187"></a> |
| <FONT color="green">188</FONT> if (nodes == null) {<a name="line.188"></a> |
| <FONT color="green">189</FONT> nodes = new IntegerArray();<a name="line.189"></a> |
| <FONT color="green">190</FONT> index.put(id, nodes);<a name="line.190"></a> |
| <FONT color="green">191</FONT> }<a name="line.191"></a> |
| <FONT color="green">192</FONT> <a name="line.192"></a> |
| <FONT color="green">193</FONT> nodes.add(_enhancedDOM.getNodeHandle(ident));<a name="line.193"></a> |
| <FONT color="green">194</FONT> }<a name="line.194"></a> |
| <FONT color="green">195</FONT> }<a name="line.195"></a> |
| <FONT color="green">196</FONT> <a name="line.196"></a> |
| <FONT color="green">197</FONT> return nodes;<a name="line.197"></a> |
| <FONT color="green">198</FONT> }<a name="line.198"></a> |
| <FONT color="green">199</FONT> <a name="line.199"></a> |
| <FONT color="green">200</FONT> /**<a name="line.200"></a> |
| <FONT color="green">201</FONT> * <p>This method must be called by the code generated by the key() function<a name="line.201"></a> |
| <FONT color="green">202</FONT> * prior to returning the node iterator.</p><a name="line.202"></a> |
| <FONT color="green">203</FONT> * <p><em>Use of an instance of this class as a {@link DTMAxisIterator} is<a name="line.203"></a> |
| <FONT color="green">204</FONT> * <b>deprecated.</b></em></p><a name="line.204"></a> |
| <FONT color="green">205</FONT> * @deprecated<a name="line.205"></a> |
| <FONT color="green">206</FONT> */<a name="line.206"></a> |
| <FONT color="green">207</FONT> public void lookupKey(Object value) {<a name="line.207"></a> |
| <FONT color="green">208</FONT> IntegerArray nodes = (IntegerArray) _index.get(value);<a name="line.208"></a> |
| <FONT color="green">209</FONT> _nodes = (nodes != null) ? (IntegerArray) nodes.clone() : null;<a name="line.209"></a> |
| <FONT color="green">210</FONT> _position = 0;<a name="line.210"></a> |
| <FONT color="green">211</FONT> }<a name="line.211"></a> |
| <FONT color="green">212</FONT> <a name="line.212"></a> |
| <FONT color="green">213</FONT> /** <a name="line.213"></a> |
| <FONT color="green">214</FONT> * <p>Callers should not call next() after it returns END.</p><a name="line.214"></a> |
| <FONT color="green">215</FONT> * <p><em>Use of an instance of this class as a {@link DTMAxisIterator} is<a name="line.215"></a> |
| <FONT color="green">216</FONT> * <b>deprecated.</b></em></p><a name="line.216"></a> |
| <FONT color="green">217</FONT> * @deprecated<a name="line.217"></a> |
| <FONT color="green">218</FONT> */<a name="line.218"></a> |
| <FONT color="green">219</FONT> public int next() {<a name="line.219"></a> |
| <FONT color="green">220</FONT> if (_nodes == null) return DTMAxisIterator.END;<a name="line.220"></a> |
| <FONT color="green">221</FONT> <a name="line.221"></a> |
| <FONT color="green">222</FONT> return (_position < _nodes.cardinality()) ? <a name="line.222"></a> |
| <FONT color="green">223</FONT> _dom.getNodeHandle(_nodes.at(_position++)) : DTMAxisIterator.END;<a name="line.223"></a> |
| <FONT color="green">224</FONT> }<a name="line.224"></a> |
| <FONT color="green">225</FONT> <a name="line.225"></a> |
| <FONT color="green">226</FONT> /**<a name="line.226"></a> |
| <FONT color="green">227</FONT> * Given a context node and the argument to the XPath <code>id</code><a name="line.227"></a> |
| <FONT color="green">228</FONT> * function, checks whether the context node is in the set of nodes that<a name="line.228"></a> |
| <FONT color="green">229</FONT> * results from that reference to the <code>id</code> function. This is<a name="line.229"></a> |
| <FONT color="green">230</FONT> * used in the implementation of <code>id</code> patterns.<a name="line.230"></a> |
| <FONT color="green">231</FONT> *<a name="line.231"></a> |
| <FONT color="green">232</FONT> * @param node The context node<a name="line.232"></a> |
| <FONT color="green">233</FONT> * @param value The argument to the <code>id</code> function<a name="line.233"></a> |
| <FONT color="green">234</FONT> * @return <code>1</code> if the context node is in the set of nodes<a name="line.234"></a> |
| <FONT color="green">235</FONT> * returned by the reference to the <code>id</code> function;<a name="line.235"></a> |
| <FONT color="green">236</FONT> * <code>0</code>, otherwise<a name="line.236"></a> |
| <FONT color="green">237</FONT> */<a name="line.237"></a> |
| <FONT color="green">238</FONT> public int containsID(int node, Object value) {<a name="line.238"></a> |
| <FONT color="green">239</FONT> final String string = (String)value;<a name="line.239"></a> |
| <FONT color="green">240</FONT> int rootHandle = _dom.getAxisIterator(Axis.ROOT)<a name="line.240"></a> |
| <FONT color="green">241</FONT> .setStartNode(node).next();<a name="line.241"></a> |
| <FONT color="green">242</FONT> <a name="line.242"></a> |
| <FONT color="green">243</FONT> // Get the mapping table for the document containing the context node<a name="line.243"></a> |
| <FONT color="green">244</FONT> Hashtable index =<a name="line.244"></a> |
| <FONT color="green">245</FONT> (Hashtable) _rootToIndexMap.get(new Integer(rootHandle));<a name="line.245"></a> |
| <FONT color="green">246</FONT> <a name="line.246"></a> |
| <FONT color="green">247</FONT> // Split argument to id function into XML whitespace separated tokens<a name="line.247"></a> |
| <FONT color="green">248</FONT> final StringTokenizer values = new StringTokenizer(string, " \n\t");<a name="line.248"></a> |
| <FONT color="green">249</FONT> <a name="line.249"></a> |
| <FONT color="green">250</FONT> while (values.hasMoreElements()) {<a name="line.250"></a> |
| <FONT color="green">251</FONT> final String token = (String) values.nextElement();<a name="line.251"></a> |
| <FONT color="green">252</FONT> IntegerArray nodes = null;<a name="line.252"></a> |
| <FONT color="green">253</FONT> <a name="line.253"></a> |
| <FONT color="green">254</FONT> if (index != null) {<a name="line.254"></a> |
| <FONT color="green">255</FONT> nodes = (IntegerArray) index.get(token);<a name="line.255"></a> |
| <FONT color="green">256</FONT> }<a name="line.256"></a> |
| <FONT color="green">257</FONT> <a name="line.257"></a> |
| <FONT color="green">258</FONT> // If input was from W3C DOM, use DOM's getElementById to do<a name="line.258"></a> |
| <FONT color="green">259</FONT> // the look-up.<a name="line.259"></a> |
| <FONT color="green">260</FONT> if (nodes == null && _enhancedDOM != null<a name="line.260"></a> |
| <FONT color="green">261</FONT> && _enhancedDOM.hasDOMSource()) {<a name="line.261"></a> |
| <FONT color="green">262</FONT> nodes = getDOMNodeById(token); <a name="line.262"></a> |
| <FONT color="green">263</FONT> }<a name="line.263"></a> |
| <FONT color="green">264</FONT> <a name="line.264"></a> |
| <FONT color="green">265</FONT> // Did we find the context node in the set of nodes?<a name="line.265"></a> |
| <FONT color="green">266</FONT> if (nodes != null && nodes.indexOf(node) >= 0) {<a name="line.266"></a> |
| <FONT color="green">267</FONT> return 1;<a name="line.267"></a> |
| <FONT color="green">268</FONT> }<a name="line.268"></a> |
| <FONT color="green">269</FONT> }<a name="line.269"></a> |
| <FONT color="green">270</FONT> <a name="line.270"></a> |
| <FONT color="green">271</FONT> // Didn't find the context node in the set of nodes returned by id<a name="line.271"></a> |
| <FONT color="green">272</FONT> return 0;<a name="line.272"></a> |
| <FONT color="green">273</FONT> }<a name="line.273"></a> |
| <FONT color="green">274</FONT> <a name="line.274"></a> |
| <FONT color="green">275</FONT> /**<a name="line.275"></a> |
| <FONT color="green">276</FONT> * <p>Given a context node and the second argument to the XSLT<a name="line.276"></a> |
| <FONT color="green">277</FONT> * <code>key</code> function, checks whether the context node is in the<a name="line.277"></a> |
| <FONT color="green">278</FONT> * set of nodes that results from that reference to the <code>key</code><a name="line.278"></a> |
| <FONT color="green">279</FONT> * function. This is used in the implementation of key patterns.</p><a name="line.279"></a> |
| <FONT color="green">280</FONT> * <p>This particular {@link KeyIndex} object is the result evaluating the<a name="line.280"></a> |
| <FONT color="green">281</FONT> * first argument to the <code>key</code> function, so it's not taken into<a name="line.281"></a> |
| <FONT color="green">282</FONT> * any further account.</p><a name="line.282"></a> |
| <FONT color="green">283</FONT> *<a name="line.283"></a> |
| <FONT color="green">284</FONT> * @param node The context node<a name="line.284"></a> |
| <FONT color="green">285</FONT> * @param value The second argument to the <code>key</code> function<a name="line.285"></a> |
| <FONT color="green">286</FONT> * @return <code>1</code> if and only if the context node is in the set of<a name="line.286"></a> |
| <FONT color="green">287</FONT> * nodes returned by the reference to the <code>key</code> function;<a name="line.287"></a> |
| <FONT color="green">288</FONT> * <code>0</code>, otherwise<a name="line.288"></a> |
| <FONT color="green">289</FONT> */<a name="line.289"></a> |
| <FONT color="green">290</FONT> public int containsKey(int node, Object value) {<a name="line.290"></a> |
| <FONT color="green">291</FONT> int rootHandle = _dom.getAxisIterator(Axis.ROOT)<a name="line.291"></a> |
| <FONT color="green">292</FONT> .setStartNode(node).next();<a name="line.292"></a> |
| <FONT color="green">293</FONT> <a name="line.293"></a> |
| <FONT color="green">294</FONT> // Get the mapping table for the document containing the context node<a name="line.294"></a> |
| <FONT color="green">295</FONT> Hashtable index =<a name="line.295"></a> |
| <FONT color="green">296</FONT> (Hashtable) _rootToIndexMap.get(new Integer(rootHandle));<a name="line.296"></a> |
| <FONT color="green">297</FONT> <a name="line.297"></a> |
| <FONT color="green">298</FONT> // Check whether the context node is present in the set of nodes<a name="line.298"></a> |
| <FONT color="green">299</FONT> // returned by the key function<a name="line.299"></a> |
| <FONT color="green">300</FONT> if (index != null) {<a name="line.300"></a> |
| <FONT color="green">301</FONT> final IntegerArray nodes = (IntegerArray) index.get(value);<a name="line.301"></a> |
| <FONT color="green">302</FONT> return (nodes != null && nodes.indexOf(node) >= 0) ? 1 : 0;<a name="line.302"></a> |
| <FONT color="green">303</FONT> }<a name="line.303"></a> |
| <FONT color="green">304</FONT> <a name="line.304"></a> |
| <FONT color="green">305</FONT> // The particular key name identifies no nodes in this document<a name="line.305"></a> |
| <FONT color="green">306</FONT> return 0;<a name="line.306"></a> |
| <FONT color="green">307</FONT> }<a name="line.307"></a> |
| <FONT color="green">308</FONT> <a name="line.308"></a> |
| <FONT color="green">309</FONT> /**<a name="line.309"></a> |
| <FONT color="green">310</FONT> * <p>Resets the iterator to the last start node.</p><a name="line.310"></a> |
| <FONT color="green">311</FONT> * <p><em>Use of an instance of this class as a {@link DTMAxisIterator} is<a name="line.311"></a> |
| <FONT color="green">312</FONT> * <b>deprecated.</b></em></p><a name="line.312"></a> |
| <FONT color="green">313</FONT> * @deprecated<a name="line.313"></a> |
| <FONT color="green">314</FONT> */<a name="line.314"></a> |
| <FONT color="green">315</FONT> public DTMAxisIterator reset() {<a name="line.315"></a> |
| <FONT color="green">316</FONT> _position = 0;<a name="line.316"></a> |
| <FONT color="green">317</FONT> return this;<a name="line.317"></a> |
| <FONT color="green">318</FONT> }<a name="line.318"></a> |
| <FONT color="green">319</FONT> <a name="line.319"></a> |
| <FONT color="green">320</FONT> /**<a name="line.320"></a> |
| <FONT color="green">321</FONT> * <p>Returns the number of elements in this iterator.</p><a name="line.321"></a> |
| <FONT color="green">322</FONT> * <p><em>Use of an instance of this class as a {@link DTMAxisIterator} is<a name="line.322"></a> |
| <FONT color="green">323</FONT> * <b>deprecated.</b></em></p><a name="line.323"></a> |
| <FONT color="green">324</FONT> * @deprecated<a name="line.324"></a> |
| <FONT color="green">325</FONT> */<a name="line.325"></a> |
| <FONT color="green">326</FONT> public int getLast() {<a name="line.326"></a> |
| <FONT color="green">327</FONT> return (_nodes == null) ? 0 : _nodes.cardinality();<a name="line.327"></a> |
| <FONT color="green">328</FONT> }<a name="line.328"></a> |
| <FONT color="green">329</FONT> <a name="line.329"></a> |
| <FONT color="green">330</FONT> /**<a name="line.330"></a> |
| <FONT color="green">331</FONT> * <p>Returns the position of the current node in the set.</p><a name="line.331"></a> |
| <FONT color="green">332</FONT> * <p><em>Use of an instance of this class as a {@link DTMAxisIterator} is<a name="line.332"></a> |
| <FONT color="green">333</FONT> * <b>deprecated.</b></em></p><a name="line.333"></a> |
| <FONT color="green">334</FONT> * @deprecated<a name="line.334"></a> |
| <FONT color="green">335</FONT> */<a name="line.335"></a> |
| <FONT color="green">336</FONT> public int getPosition() {<a name="line.336"></a> |
| <FONT color="green">337</FONT> return _position;<a name="line.337"></a> |
| <FONT color="green">338</FONT> }<a name="line.338"></a> |
| <FONT color="green">339</FONT> <a name="line.339"></a> |
| <FONT color="green">340</FONT> /**<a name="line.340"></a> |
| <FONT color="green">341</FONT> * <p>Remembers the current node for the next call to gotoMark().</p><a name="line.341"></a> |
| <FONT color="green">342</FONT> * <p><em>Use of an instance of this class as a {@link DTMAxisIterator} is<a name="line.342"></a> |
| <FONT color="green">343</FONT> * <b>deprecated.</b></em></p><a name="line.343"></a> |
| <FONT color="green">344</FONT> * @deprecated<a name="line.344"></a> |
| <FONT color="green">345</FONT> */<a name="line.345"></a> |
| <FONT color="green">346</FONT> public void setMark() {<a name="line.346"></a> |
| <FONT color="green">347</FONT> _markedPosition = _position;<a name="line.347"></a> |
| <FONT color="green">348</FONT> }<a name="line.348"></a> |
| <FONT color="green">349</FONT> <a name="line.349"></a> |
| <FONT color="green">350</FONT> /**<a name="line.350"></a> |
| <FONT color="green">351</FONT> * <p>Restores the current node remembered by setMark().</p><a name="line.351"></a> |
| <FONT color="green">352</FONT> * <p><em>Use of an instance of this class as a {@link DTMAxisIterator} is<a name="line.352"></a> |
| <FONT color="green">353</FONT> * <b>deprecated.</b></em></p><a name="line.353"></a> |
| <FONT color="green">354</FONT> * @deprecated<a name="line.354"></a> |
| <FONT color="green">355</FONT> */<a name="line.355"></a> |
| <FONT color="green">356</FONT> public void gotoMark() {<a name="line.356"></a> |
| <FONT color="green">357</FONT> _position = _markedPosition;<a name="line.357"></a> |
| <FONT color="green">358</FONT> }<a name="line.358"></a> |
| <FONT color="green">359</FONT> <a name="line.359"></a> |
| <FONT color="green">360</FONT> /** <a name="line.360"></a> |
| <FONT color="green">361</FONT> * <p>Set start to END should 'close' the iterator, <a name="line.361"></a> |
| <FONT color="green">362</FONT> * i.e. subsequent call to next() should return END.</p><a name="line.362"></a> |
| <FONT color="green">363</FONT> * <p><em>Use of an instance of this class as a {@link DTMAxisIterator} is<a name="line.363"></a> |
| <FONT color="green">364</FONT> * <b>deprecated.</b></em></p><a name="line.364"></a> |
| <FONT color="green">365</FONT> * @deprecated<a name="line.365"></a> |
| <FONT color="green">366</FONT> */<a name="line.366"></a> |
| <FONT color="green">367</FONT> public DTMAxisIterator setStartNode(int start) {<a name="line.367"></a> |
| <FONT color="green">368</FONT> if (start == DTMAxisIterator.END) {<a name="line.368"></a> |
| <FONT color="green">369</FONT> _nodes = null;<a name="line.369"></a> |
| <FONT color="green">370</FONT> }<a name="line.370"></a> |
| <FONT color="green">371</FONT> else if (_nodes != null) {<a name="line.371"></a> |
| <FONT color="green">372</FONT> _position = 0;<a name="line.372"></a> |
| <FONT color="green">373</FONT> }<a name="line.373"></a> |
| <FONT color="green">374</FONT> return (DTMAxisIterator) this;<a name="line.374"></a> |
| <FONT color="green">375</FONT> }<a name="line.375"></a> |
| <FONT color="green">376</FONT> <a name="line.376"></a> |
| <FONT color="green">377</FONT> /** <a name="line.377"></a> |
| <FONT color="green">378</FONT> * <p>Get start to END should 'close' the iterator, <a name="line.378"></a> |
| <FONT color="green">379</FONT> * i.e. subsequent call to next() should return END.</p><a name="line.379"></a> |
| <FONT color="green">380</FONT> * <p><em>Use of an instance of this class as a {@link DTMAxisIterator} is<a name="line.380"></a> |
| <FONT color="green">381</FONT> * <b>deprecated.</b></em></p><a name="line.381"></a> |
| <FONT color="green">382</FONT> * @deprecated<a name="line.382"></a> |
| <FONT color="green">383</FONT> */<a name="line.383"></a> |
| <FONT color="green">384</FONT> public int getStartNode() { <a name="line.384"></a> |
| <FONT color="green">385</FONT> return 0;<a name="line.385"></a> |
| <FONT color="green">386</FONT> }<a name="line.386"></a> |
| <FONT color="green">387</FONT> <a name="line.387"></a> |
| <FONT color="green">388</FONT> /**<a name="line.388"></a> |
| <FONT color="green">389</FONT> * <p>True if this iterator has a reversed axis.</p><a name="line.389"></a> |
| <FONT color="green">390</FONT> * <p><em>Use of an instance of this class as a {@link DTMAxisIterator} is<a name="line.390"></a> |
| <FONT color="green">391</FONT> * <b>deprecated.</b></em></p><a name="line.391"></a> |
| <FONT color="green">392</FONT> * @deprecated<a name="line.392"></a> |
| <FONT color="green">393</FONT> */<a name="line.393"></a> |
| <FONT color="green">394</FONT> public boolean isReverse() {<a name="line.394"></a> |
| <FONT color="green">395</FONT> return(false);<a name="line.395"></a> |
| <FONT color="green">396</FONT> }<a name="line.396"></a> |
| <FONT color="green">397</FONT> <a name="line.397"></a> |
| <FONT color="green">398</FONT> /**<a name="line.398"></a> |
| <FONT color="green">399</FONT> * <p>Returns a deep copy of this iterator.</p><a name="line.399"></a> |
| <FONT color="green">400</FONT> * <p><em>Use of an instance of this class as a {@link DTMAxisIterator} is<a name="line.400"></a> |
| <FONT color="green">401</FONT> * <b>deprecated.</b></em></p><a name="line.401"></a> |
| <FONT color="green">402</FONT> * @deprecated<a name="line.402"></a> |
| <FONT color="green">403</FONT> */<a name="line.403"></a> |
| <FONT color="green">404</FONT> public DTMAxisIterator cloneIterator() {<a name="line.404"></a> |
| <FONT color="green">405</FONT> KeyIndex other = new KeyIndex(0);<a name="line.405"></a> |
| <FONT color="green">406</FONT> other._index = _index;<a name="line.406"></a> |
| <FONT color="green">407</FONT> other._rootToIndexMap = _rootToIndexMap;<a name="line.407"></a> |
| <FONT color="green">408</FONT> other._nodes = _nodes;<a name="line.408"></a> |
| <FONT color="green">409</FONT> other._position = _position;<a name="line.409"></a> |
| <FONT color="green">410</FONT> return (DTMAxisIterator) other;<a name="line.410"></a> |
| <FONT color="green">411</FONT> }<a name="line.411"></a> |
| <FONT color="green">412</FONT> <a name="line.412"></a> |
| <FONT color="green">413</FONT> public void setDom(DOM dom) {<a name="line.413"></a> |
| <FONT color="green">414</FONT> _dom = dom;<a name="line.414"></a> |
| <FONT color="green">415</FONT> if (dom instanceof DOMEnhancedForDTM) {<a name="line.415"></a> |
| <FONT color="green">416</FONT> _enhancedDOM = (DOMEnhancedForDTM)dom;<a name="line.416"></a> |
| <FONT color="green">417</FONT> }<a name="line.417"></a> |
| <FONT color="green">418</FONT> else if (dom instanceof DOMAdapter) {<a name="line.418"></a> |
| <FONT color="green">419</FONT> DOM idom = ((DOMAdapter)dom).getDOMImpl();<a name="line.419"></a> |
| <FONT color="green">420</FONT> if (idom instanceof DOMEnhancedForDTM) {<a name="line.420"></a> |
| <FONT color="green">421</FONT> _enhancedDOM = (DOMEnhancedForDTM)idom;<a name="line.421"></a> |
| <FONT color="green">422</FONT> }<a name="line.422"></a> |
| <FONT color="green">423</FONT> }<a name="line.423"></a> |
| <FONT color="green">424</FONT> }<a name="line.424"></a> |
| <FONT color="green">425</FONT> <a name="line.425"></a> |
| <FONT color="green">426</FONT> /**<a name="line.426"></a> |
| <FONT color="green">427</FONT> * Create a {@link KeyIndexIterator} that iterates over the nodes that<a name="line.427"></a> |
| <FONT color="green">428</FONT> * result from a reference to the XSLT <code>key</code> function or<a name="line.428"></a> |
| <FONT color="green">429</FONT> * XPath <code>id</code> function.<a name="line.429"></a> |
| <FONT color="green">430</FONT> *<a name="line.430"></a> |
| <FONT color="green">431</FONT> * @param keyValue A string or iterator representing the key values or id<a name="line.431"></a> |
| <FONT color="green">432</FONT> * references<a name="line.432"></a> |
| <FONT color="green">433</FONT> * @param isKeyCall A <code>boolean</code> indicating whether the iterator<a name="line.433"></a> |
| <FONT color="green">434</FONT> * is being created for a reference <code>key</code> or<a name="line.434"></a> |
| <FONT color="green">435</FONT> * <code>id</code><a name="line.435"></a> |
| <FONT color="green">436</FONT> */<a name="line.436"></a> |
| <FONT color="green">437</FONT> public KeyIndexIterator getKeyIndexIterator(Object keyValue,<a name="line.437"></a> |
| <FONT color="green">438</FONT> boolean isKeyCall) {<a name="line.438"></a> |
| <FONT color="green">439</FONT> if (keyValue instanceof DTMAxisIterator) {<a name="line.439"></a> |
| <FONT color="green">440</FONT> return getKeyIndexIterator((DTMAxisIterator) keyValue, isKeyCall);<a name="line.440"></a> |
| <FONT color="green">441</FONT> } else {<a name="line.441"></a> |
| <FONT color="green">442</FONT> return getKeyIndexIterator(BasisLibrary.stringF(keyValue, _dom),<a name="line.442"></a> |
| <FONT color="green">443</FONT> isKeyCall);<a name="line.443"></a> |
| <FONT color="green">444</FONT> }<a name="line.444"></a> |
| <FONT color="green">445</FONT> }<a name="line.445"></a> |
| <FONT color="green">446</FONT> <a name="line.446"></a> |
| <FONT color="green">447</FONT> /**<a name="line.447"></a> |
| <FONT color="green">448</FONT> * Create a {@link KeyIndexIterator} that iterates over the nodes that<a name="line.448"></a> |
| <FONT color="green">449</FONT> * result from a reference to the XSLT <code>key</code> function or<a name="line.449"></a> |
| <FONT color="green">450</FONT> * XPath <code>id</code> function.<a name="line.450"></a> |
| <FONT color="green">451</FONT> *<a name="line.451"></a> |
| <FONT color="green">452</FONT> * @param keyValue A string representing the key values or id<a name="line.452"></a> |
| <FONT color="green">453</FONT> * references<a name="line.453"></a> |
| <FONT color="green">454</FONT> * @param isKeyCall A <code>boolean</code> indicating whether the iterator<a name="line.454"></a> |
| <FONT color="green">455</FONT> * is being created for a reference <code>key</code> or<a name="line.455"></a> |
| <FONT color="green">456</FONT> * <code>id</code><a name="line.456"></a> |
| <FONT color="green">457</FONT> */<a name="line.457"></a> |
| <FONT color="green">458</FONT> public KeyIndexIterator getKeyIndexIterator(String keyValue,<a name="line.458"></a> |
| <FONT color="green">459</FONT> boolean isKeyCall) {<a name="line.459"></a> |
| <FONT color="green">460</FONT> return new KeyIndexIterator(keyValue, isKeyCall);<a name="line.460"></a> |
| <FONT color="green">461</FONT> }<a name="line.461"></a> |
| <FONT color="green">462</FONT> <a name="line.462"></a> |
| <FONT color="green">463</FONT> /**<a name="line.463"></a> |
| <FONT color="green">464</FONT> * Create a {@link KeyIndexIterator} that iterates over the nodes that<a name="line.464"></a> |
| <FONT color="green">465</FONT> * result from a reference to the XSLT <code>key</code> function or<a name="line.465"></a> |
| <FONT color="green">466</FONT> * XPath <code>id</code> function.<a name="line.466"></a> |
| <FONT color="green">467</FONT> *<a name="line.467"></a> |
| <FONT color="green">468</FONT> * @param keyValue An iterator representing the key values or id<a name="line.468"></a> |
| <FONT color="green">469</FONT> * references<a name="line.469"></a> |
| <FONT color="green">470</FONT> * @param isKeyCall A <code>boolean</code> indicating whether the iterator<a name="line.470"></a> |
| <FONT color="green">471</FONT> * is being created for a reference <code>key</code> or<a name="line.471"></a> |
| <FONT color="green">472</FONT> * <code>id</code><a name="line.472"></a> |
| <FONT color="green">473</FONT> */<a name="line.473"></a> |
| <FONT color="green">474</FONT> public KeyIndexIterator getKeyIndexIterator(DTMAxisIterator keyValue,<a name="line.474"></a> |
| <FONT color="green">475</FONT> boolean isKeyCall) {<a name="line.475"></a> |
| <FONT color="green">476</FONT> return new KeyIndexIterator(keyValue, isKeyCall);<a name="line.476"></a> |
| <FONT color="green">477</FONT> }<a name="line.477"></a> |
| <FONT color="green">478</FONT> <a name="line.478"></a> |
| <FONT color="green">479</FONT> /**<a name="line.479"></a> |
| <FONT color="green">480</FONT> * Used to represent an empty node set.<a name="line.480"></a> |
| <FONT color="green">481</FONT> */<a name="line.481"></a> |
| <FONT color="green">482</FONT> final private static IntegerArray EMPTY_NODES = new IntegerArray(0);<a name="line.482"></a> |
| <FONT color="green">483</FONT> <a name="line.483"></a> |
| <FONT color="green">484</FONT> <a name="line.484"></a> |
| <FONT color="green">485</FONT> /**<a name="line.485"></a> |
| <FONT color="green">486</FONT> * An iterator representing the result of a reference to either the<a name="line.486"></a> |
| <FONT color="green">487</FONT> * XSLT <code>key</code> function or the XPath <code>id</code> function.<a name="line.487"></a> |
| <FONT color="green">488</FONT> */<a name="line.488"></a> |
| <FONT color="green">489</FONT> public class KeyIndexIterator extends MultiValuedNodeHeapIterator {<a name="line.489"></a> |
| <FONT color="green">490</FONT> <a name="line.490"></a> |
| <FONT color="green">491</FONT> /**<a name="line.491"></a> |
| <FONT color="green">492</FONT> * <p>A reference to the <code>key</code> function that only has one<a name="line.492"></a> |
| <FONT color="green">493</FONT> * key value or to the <code>id</code> function that has only one string<a name="line.493"></a> |
| <FONT color="green">494</FONT> * argument can be optimized to ignore the multi-valued heap. This<a name="line.494"></a> |
| <FONT color="green">495</FONT> * field will be <code>null</code> otherwise.<a name="line.495"></a> |
| <FONT color="green">496</FONT> */<a name="line.496"></a> |
| <FONT color="green">497</FONT> private IntegerArray _nodes;<a name="line.497"></a> |
| <FONT color="green">498</FONT> <a name="line.498"></a> |
| <FONT color="green">499</FONT> /**<a name="line.499"></a> |
| <FONT color="green">500</FONT> * <p>This field contains the iterator representing a node set key value<a name="line.500"></a> |
| <FONT color="green">501</FONT> * argument to the <code>key</code> function or a node set argument<a name="line.501"></a> |
| <FONT color="green">502</FONT> * to the <code>id</code> function.</p><a name="line.502"></a> |
| <FONT color="green">503</FONT> *<a name="line.503"></a> |
| <FONT color="green">504</FONT> * <p>Exactly one of this field and {@link #_keyValue} must be<a name="line.504"></a> |
| <FONT color="green">505</FONT> * <code>null</code>.</p><a name="line.505"></a> |
| <FONT color="green">506</FONT> */<a name="line.506"></a> |
| <FONT color="green">507</FONT> private DTMAxisIterator _keyValueIterator;<a name="line.507"></a> |
| <FONT color="green">508</FONT> <a name="line.508"></a> |
| <FONT color="green">509</FONT> /**<a name="line.509"></a> |
| <FONT color="green">510</FONT> * <p>This field contains the iterator representing a non-node-set key<a name="line.510"></a> |
| <FONT color="green">511</FONT> * value argument to the <code>key</code> function or a non-node-set<a name="line.511"></a> |
| <FONT color="green">512</FONT> * argument to the <code>id</code> function.</p><a name="line.512"></a> |
| <FONT color="green">513</FONT> *<a name="line.513"></a> |
| <FONT color="green">514</FONT> * <p>Exactly one of this field and {@link #_keyValueIterator} must be<a name="line.514"></a> |
| <FONT color="green">515</FONT> * <code>null</code>.</p><a name="line.515"></a> |
| <FONT color="green">516</FONT> */<a name="line.516"></a> |
| <FONT color="green">517</FONT> private String _keyValue;<a name="line.517"></a> |
| <FONT color="green">518</FONT> <a name="line.518"></a> |
| <FONT color="green">519</FONT> /**<a name="line.519"></a> |
| <FONT color="green">520</FONT> * Indicates whether this object represents the result of a reference<a name="line.520"></a> |
| <FONT color="green">521</FONT> * to the <code>key</code> function (<code>true</code>) or the<a name="line.521"></a> |
| <FONT color="green">522</FONT> * <code>id</code> function (<code>false</code>).<a name="line.522"></a> |
| <FONT color="green">523</FONT> */<a name="line.523"></a> |
| <FONT color="green">524</FONT> private boolean _isKeyIterator;<a name="line.524"></a> |
| <FONT color="green">525</FONT> <a name="line.525"></a> |
| <FONT color="green">526</FONT> /**<a name="line.526"></a> |
| <FONT color="green">527</FONT> * Represents the DTM nodes retrieved for one key value or one string<a name="line.527"></a> |
| <FONT color="green">528</FONT> * argument to <code>id</code> for use as one heap node in a<a name="line.528"></a> |
| <FONT color="green">529</FONT> * {@link MultiValuedNodeHeapIterator}.<a name="line.529"></a> |
| <FONT color="green">530</FONT> */<a name="line.530"></a> |
| <FONT color="green">531</FONT> protected class KeyIndexHeapNode<a name="line.531"></a> |
| <FONT color="green">532</FONT> extends MultiValuedNodeHeapIterator.HeapNode<a name="line.532"></a> |
| <FONT color="green">533</FONT> {<a name="line.533"></a> |
| <FONT color="green">534</FONT> /**<a name="line.534"></a> |
| <FONT color="green">535</FONT> * {@link IntegerArray} of DTM nodes retrieved for one key value.<a name="line.535"></a> |
| <FONT color="green">536</FONT> * Must contain no duplicates and be stored in document order.<a name="line.536"></a> |
| <FONT color="green">537</FONT> */<a name="line.537"></a> |
| <FONT color="green">538</FONT> private IntegerArray _nodes;<a name="line.538"></a> |
| <FONT color="green">539</FONT> <a name="line.539"></a> |
| <FONT color="green">540</FONT> /**<a name="line.540"></a> |
| <FONT color="green">541</FONT> * Position in {@link #_nodes} array of next node to return from<a name="line.541"></a> |
| <FONT color="green">542</FONT> * this heap node.<a name="line.542"></a> |
| <FONT color="green">543</FONT> */<a name="line.543"></a> |
| <FONT color="green">544</FONT> private int _position = 0;<a name="line.544"></a> |
| <FONT color="green">545</FONT> <a name="line.545"></a> |
| <FONT color="green">546</FONT> /**<a name="line.546"></a> |
| <FONT color="green">547</FONT> * Marked position. Used by {@link #setMark()} and<a name="line.547"></a> |
| <FONT color="green">548</FONT> * {@link #gotoMark()}<a name="line.548"></a> |
| <FONT color="green">549</FONT> */<a name="line.549"></a> |
| <FONT color="green">550</FONT> private int _markPosition = -1;<a name="line.550"></a> |
| <FONT color="green">551</FONT> <a name="line.551"></a> |
| <FONT color="green">552</FONT> /**<a name="line.552"></a> |
| <FONT color="green">553</FONT> * Create a heap node representing DTM nodes retrieved for one<a name="line.553"></a> |
| <FONT color="green">554</FONT> * key value in a reference to the <code>key</code> function<a name="line.554"></a> |
| <FONT color="green">555</FONT> * or string argument to the <code>id</code> function.<a name="line.555"></a> |
| <FONT color="green">556</FONT> */<a name="line.556"></a> |
| <FONT color="green">557</FONT> KeyIndexHeapNode(IntegerArray nodes) {<a name="line.557"></a> |
| <FONT color="green">558</FONT> _nodes = nodes;<a name="line.558"></a> |
| <FONT color="green">559</FONT> }<a name="line.559"></a> |
| <FONT color="green">560</FONT> <a name="line.560"></a> |
| <FONT color="green">561</FONT> /**<a name="line.561"></a> |
| <FONT color="green">562</FONT> * Advance to the next node represented by this {@link HeapNode}<a name="line.562"></a> |
| <FONT color="green">563</FONT> *<a name="line.563"></a> |
| <FONT color="green">564</FONT> * @return the next DTM node.<a name="line.564"></a> |
| <FONT color="green">565</FONT> */<a name="line.565"></a> |
| <FONT color="green">566</FONT> public int step() {<a name="line.566"></a> |
| <FONT color="green">567</FONT> if (_position < _nodes.cardinality()) {<a name="line.567"></a> |
| <FONT color="green">568</FONT> _node = _nodes.at(_position);<a name="line.568"></a> |
| <FONT color="green">569</FONT> _position++;<a name="line.569"></a> |
| <FONT color="green">570</FONT> } else {<a name="line.570"></a> |
| <FONT color="green">571</FONT> _node = DTMAxisIterator.END;<a name="line.571"></a> |
| <FONT color="green">572</FONT> }<a name="line.572"></a> |
| <FONT color="green">573</FONT> <a name="line.573"></a> |
| <FONT color="green">574</FONT> return _node;<a name="line.574"></a> |
| <FONT color="green">575</FONT> }<a name="line.575"></a> |
| <FONT color="green">576</FONT> <a name="line.576"></a> |
| <FONT color="green">577</FONT> /**<a name="line.577"></a> |
| <FONT color="green">578</FONT> * Creates a deep copy of this {@link HeapNode}. The clone is not<a name="line.578"></a> |
| <FONT color="green">579</FONT> * reset from the current position of the original.<a name="line.579"></a> |
| <FONT color="green">580</FONT> *<a name="line.580"></a> |
| <FONT color="green">581</FONT> * @return the cloned heap node<a name="line.581"></a> |
| <FONT color="green">582</FONT> */<a name="line.582"></a> |
| <FONT color="green">583</FONT> public HeapNode cloneHeapNode() {<a name="line.583"></a> |
| <FONT color="green">584</FONT> KeyIndexHeapNode clone =<a name="line.584"></a> |
| <FONT color="green">585</FONT> (KeyIndexHeapNode) super.cloneHeapNode();<a name="line.585"></a> |
| <FONT color="green">586</FONT> <a name="line.586"></a> |
| <FONT color="green">587</FONT> clone._nodes = _nodes;<a name="line.587"></a> |
| <FONT color="green">588</FONT> clone._position = _position;<a name="line.588"></a> |
| <FONT color="green">589</FONT> clone._markPosition = _markPosition;<a name="line.589"></a> |
| <FONT color="green">590</FONT> <a name="line.590"></a> |
| <FONT color="green">591</FONT> return clone;<a name="line.591"></a> |
| <FONT color="green">592</FONT> }<a name="line.592"></a> |
| <FONT color="green">593</FONT> <a name="line.593"></a> |
| <FONT color="green">594</FONT> /**<a name="line.594"></a> |
| <FONT color="green">595</FONT> * Remembers the current node for the next call to<a name="line.595"></a> |
| <FONT color="green">596</FONT> * {@link #gotoMark()}.<a name="line.596"></a> |
| <FONT color="green">597</FONT> */<a name="line.597"></a> |
| <FONT color="green">598</FONT> public void setMark() {<a name="line.598"></a> |
| <FONT color="green">599</FONT> _markPosition = _position;<a name="line.599"></a> |
| <FONT color="green">600</FONT> }<a name="line.600"></a> |
| <FONT color="green">601</FONT> <a name="line.601"></a> |
| <FONT color="green">602</FONT> /**<a name="line.602"></a> |
| <FONT color="green">603</FONT> * Restores the current node remembered by {@link #setMark()}.<a name="line.603"></a> |
| <FONT color="green">604</FONT> */<a name="line.604"></a> |
| <FONT color="green">605</FONT> public void gotoMark() {<a name="line.605"></a> |
| <FONT color="green">606</FONT> _position = _markPosition;<a name="line.606"></a> |
| <FONT color="green">607</FONT> }<a name="line.607"></a> |
| <FONT color="green">608</FONT> <a name="line.608"></a> |
| <FONT color="green">609</FONT> /**<a name="line.609"></a> |
| <FONT color="green">610</FONT> * Performs a comparison of the two heap nodes<a name="line.610"></a> |
| <FONT color="green">611</FONT> *<a name="line.611"></a> |
| <FONT color="green">612</FONT> * @param heapNode the heap node against which to compare<a name="line.612"></a> |
| <FONT color="green">613</FONT> * @return <code>true</code> if and only if the current node for<a name="line.613"></a> |
| <FONT color="green">614</FONT> * this heap node is before the current node of the<a name="line.614"></a> |
| <FONT color="green">615</FONT> * argument heap node in document order.<a name="line.615"></a> |
| <FONT color="green">616</FONT> */<a name="line.616"></a> |
| <FONT color="green">617</FONT> public boolean isLessThan(HeapNode heapNode) {<a name="line.617"></a> |
| <FONT color="green">618</FONT> return _node < heapNode._node;<a name="line.618"></a> |
| <FONT color="green">619</FONT> }<a name="line.619"></a> |
| <FONT color="green">620</FONT> <a name="line.620"></a> |
| <FONT color="green">621</FONT> /**<a name="line.621"></a> |
| <FONT color="green">622</FONT> * <p>Sets context with respect to which this heap node is<a name="line.622"></a> |
| <FONT color="green">623</FONT> * evaluated.</p><a name="line.623"></a> |
| <FONT color="green">624</FONT> * <p>This has no real effect on this kind of heap node. Instead,<a name="line.624"></a> |
| <FONT color="green">625</FONT> * the {@link KeyIndexIterator#setStartNode(int)} method should<a name="line.625"></a> |
| <FONT color="green">626</FONT> * create new instances of this class to represent the effect of<a name="line.626"></a> |
| <FONT color="green">627</FONT> * changing the context.</p><a name="line.627"></a> |
| <FONT color="green">628</FONT> */<a name="line.628"></a> |
| <FONT color="green">629</FONT> public HeapNode setStartNode(int node) {<a name="line.629"></a> |
| <FONT color="green">630</FONT> return this;<a name="line.630"></a> |
| <FONT color="green">631</FONT> }<a name="line.631"></a> |
| <FONT color="green">632</FONT> <a name="line.632"></a> |
| <FONT color="green">633</FONT> /**<a name="line.633"></a> |
| <FONT color="green">634</FONT> * Reset the heap node back to its beginning.<a name="line.634"></a> |
| <FONT color="green">635</FONT> */<a name="line.635"></a> |
| <FONT color="green">636</FONT> public HeapNode reset() {<a name="line.636"></a> |
| <FONT color="green">637</FONT> _position = 0;<a name="line.637"></a> |
| <FONT color="green">638</FONT> return this;<a name="line.638"></a> |
| <FONT color="green">639</FONT> }<a name="line.639"></a> |
| <FONT color="green">640</FONT> }<a name="line.640"></a> |
| <FONT color="green">641</FONT> <a name="line.641"></a> |
| <FONT color="green">642</FONT> /**<a name="line.642"></a> |
| <FONT color="green">643</FONT> * Constructor used when the argument to <code>key</code> or<a name="line.643"></a> |
| <FONT color="green">644</FONT> * <code>id</code> is not a node set.<a name="line.644"></a> |
| <FONT color="green">645</FONT> *<a name="line.645"></a> |
| <FONT color="green">646</FONT> * @param keyValue the argument to <code>key</code> or <code>id</code><a name="line.646"></a> |
| <FONT color="green">647</FONT> * cast to a <code>String</code><a name="line.647"></a> |
| <FONT color="green">648</FONT> * @param isKeyIterator indicates whether the constructed iterator<a name="line.648"></a> |
| <FONT color="green">649</FONT> * represents a reference to <code>key</code> or<a name="line.649"></a> |
| <FONT color="green">650</FONT> * <code>id</code>.<a name="line.650"></a> |
| <FONT color="green">651</FONT> */<a name="line.651"></a> |
| <FONT color="green">652</FONT> KeyIndexIterator(String keyValue, boolean isKeyIterator) {<a name="line.652"></a> |
| <FONT color="green">653</FONT> _isKeyIterator = isKeyIterator;<a name="line.653"></a> |
| <FONT color="green">654</FONT> _keyValue = keyValue;<a name="line.654"></a> |
| <FONT color="green">655</FONT> }<a name="line.655"></a> |
| <FONT color="green">656</FONT> <a name="line.656"></a> |
| <FONT color="green">657</FONT> /**<a name="line.657"></a> |
| <FONT color="green">658</FONT> * Constructor used when the argument to <code>key</code> or<a name="line.658"></a> |
| <FONT color="green">659</FONT> * <code>id</code> is a node set.<a name="line.659"></a> |
| <FONT color="green">660</FONT> *<a name="line.660"></a> |
| <FONT color="green">661</FONT> * @param keyValues the argument to <code>key</code> or <code>id</code><a name="line.661"></a> |
| <FONT color="green">662</FONT> * @param isKeyIterator indicates whether the constructed iterator<a name="line.662"></a> |
| <FONT color="green">663</FONT> * represents a reference to <code>key</code> or<a name="line.663"></a> |
| <FONT color="green">664</FONT> * <code>id</code>.<a name="line.664"></a> |
| <FONT color="green">665</FONT> */<a name="line.665"></a> |
| <FONT color="green">666</FONT> KeyIndexIterator(DTMAxisIterator keyValues, boolean isKeyIterator) {<a name="line.666"></a> |
| <FONT color="green">667</FONT> _keyValueIterator = keyValues;<a name="line.667"></a> |
| <FONT color="green">668</FONT> _isKeyIterator = isKeyIterator;<a name="line.668"></a> |
| <FONT color="green">669</FONT> }<a name="line.669"></a> |
| <FONT color="green">670</FONT> <a name="line.670"></a> |
| <FONT color="green">671</FONT> /**<a name="line.671"></a> |
| <FONT color="green">672</FONT> * Retrieve nodes for a particular key value or a particular id <a name="line.672"></a> |
| <FONT color="green">673</FONT> * argument value.<a name="line.673"></a> |
| <FONT color="green">674</FONT> *<a name="line.674"></a> |
| <FONT color="green">675</FONT> * @param root The root node of the document containing the context node<a name="line.675"></a> |
| <FONT color="green">676</FONT> * @param keyValue The key value of id string argument value<a name="line.676"></a> |
| <FONT color="green">677</FONT> * @return an {@link IntegerArray} of the resulting nodes<a name="line.677"></a> |
| <FONT color="green">678</FONT> */<a name="line.678"></a> |
| <FONT color="green">679</FONT> protected IntegerArray lookupNodes(int root, String keyValue) {<a name="line.679"></a> |
| <FONT color="green">680</FONT> IntegerArray result = null;<a name="line.680"></a> |
| <FONT color="green">681</FONT> <a name="line.681"></a> |
| <FONT color="green">682</FONT> // Get mapping from key values/IDs to DTM nodes for this document<a name="line.682"></a> |
| <FONT color="green">683</FONT> Hashtable index = (Hashtable)_rootToIndexMap.get(new Integer(root));<a name="line.683"></a> |
| <FONT color="green">684</FONT> <a name="line.684"></a> |
| <FONT color="green">685</FONT> if (!_isKeyIterator) {<a name="line.685"></a> |
| <FONT color="green">686</FONT> // For id function, tokenize argument as whitespace separated<a name="line.686"></a> |
| <FONT color="green">687</FONT> // list of values and look up nodes identified by each ID.<a name="line.687"></a> |
| <FONT color="green">688</FONT> final StringTokenizer values =<a name="line.688"></a> |
| <FONT color="green">689</FONT> new StringTokenizer(keyValue, " \n\t");<a name="line.689"></a> |
| <FONT color="green">690</FONT> <a name="line.690"></a> |
| <FONT color="green">691</FONT> while (values.hasMoreElements()) {<a name="line.691"></a> |
| <FONT color="green">692</FONT> final String token = (String) values.nextElement();<a name="line.692"></a> |
| <FONT color="green">693</FONT> IntegerArray nodes = null;<a name="line.693"></a> |
| <FONT color="green">694</FONT> <a name="line.694"></a> |
| <FONT color="green">695</FONT> // Does the ID map to any node in the document?<a name="line.695"></a> |
| <FONT color="green">696</FONT> if (index != null) {<a name="line.696"></a> |
| <FONT color="green">697</FONT> nodes = (IntegerArray) index.get(token);<a name="line.697"></a> |
| <FONT color="green">698</FONT> }<a name="line.698"></a> |
| <FONT color="green">699</FONT> <a name="line.699"></a> |
| <FONT color="green">700</FONT> // If input was from W3C DOM, use DOM's getElementById to do<a name="line.700"></a> |
| <FONT color="green">701</FONT> // the look-up.<a name="line.701"></a> |
| <FONT color="green">702</FONT> if (nodes == null && _enhancedDOM != null<a name="line.702"></a> |
| <FONT color="green">703</FONT> && _enhancedDOM.hasDOMSource()) {<a name="line.703"></a> |
| <FONT color="green">704</FONT> nodes = getDOMNodeById(token);<a name="line.704"></a> |
| <FONT color="green">705</FONT> }<a name="line.705"></a> |
| <FONT color="green">706</FONT> <a name="line.706"></a> |
| <FONT color="green">707</FONT> // If we found any nodes, merge them into the cumulative<a name="line.707"></a> |
| <FONT color="green">708</FONT> // result<a name="line.708"></a> |
| <FONT color="green">709</FONT> if (nodes != null) {<a name="line.709"></a> |
| <FONT color="green">710</FONT> if (result == null) {<a name="line.710"></a> |
| <FONT color="green">711</FONT> result = (IntegerArray)nodes.clone();<a name="line.711"></a> |
| <FONT color="green">712</FONT> } else {<a name="line.712"></a> |
| <FONT color="green">713</FONT> result.merge(nodes);<a name="line.713"></a> |
| <FONT color="green">714</FONT> }<a name="line.714"></a> |
| <FONT color="green">715</FONT> }<a name="line.715"></a> |
| <FONT color="green">716</FONT> }<a name="line.716"></a> |
| <FONT color="green">717</FONT> } else if (index != null) {<a name="line.717"></a> |
| <FONT color="green">718</FONT> // For key function, map key value to nodes<a name="line.718"></a> |
| <FONT color="green">719</FONT> result = (IntegerArray) index.get(keyValue);<a name="line.719"></a> |
| <FONT color="green">720</FONT> }<a name="line.720"></a> |
| <FONT color="green">721</FONT> <a name="line.721"></a> |
| <FONT color="green">722</FONT> return result;<a name="line.722"></a> |
| <FONT color="green">723</FONT> }<a name="line.723"></a> |
| <FONT color="green">724</FONT> <a name="line.724"></a> |
| <FONT color="green">725</FONT> /**<a name="line.725"></a> |
| <FONT color="green">726</FONT> * Set context node for the iterator. This will cause the iterator<a name="line.726"></a> |
| <FONT color="green">727</FONT> * to reset itself, reevaluate arguments to the function, look up<a name="line.727"></a> |
| <FONT color="green">728</FONT> * nodes in the input and reinitialize its internal heap.<a name="line.728"></a> |
| <FONT color="green">729</FONT> *<a name="line.729"></a> |
| <FONT color="green">730</FONT> * @param node the context node<a name="line.730"></a> |
| <FONT color="green">731</FONT> * @return A {@link DTMAxisIterator} set to the start of the iteration.<a name="line.731"></a> |
| <FONT color="green">732</FONT> */<a name="line.732"></a> |
| <FONT color="green">733</FONT> public DTMAxisIterator setStartNode(int node) {<a name="line.733"></a> |
| <FONT color="green">734</FONT> _startNode = node;<a name="line.734"></a> |
| <FONT color="green">735</FONT> <a name="line.735"></a> |
| <FONT color="green">736</FONT> // If the arugment to the function is a node set, set the<a name="line.736"></a> |
| <FONT color="green">737</FONT> // context node on it.<a name="line.737"></a> |
| <FONT color="green">738</FONT> if (_keyValueIterator != null) {<a name="line.738"></a> |
| <FONT color="green">739</FONT> _keyValueIterator = _keyValueIterator.setStartNode(node);<a name="line.739"></a> |
| <FONT color="green">740</FONT> }<a name="line.740"></a> |
| <FONT color="green">741</FONT> <a name="line.741"></a> |
| <FONT color="green">742</FONT> init();<a name="line.742"></a> |
| <FONT color="green">743</FONT> <a name="line.743"></a> |
| <FONT color="green">744</FONT> return super.setStartNode(node);<a name="line.744"></a> |
| <FONT color="green">745</FONT> }<a name="line.745"></a> |
| <FONT color="green">746</FONT> <a name="line.746"></a> |
| <FONT color="green">747</FONT> /**<a name="line.747"></a> |
| <FONT color="green">748</FONT> * Get the next node in the iteration.<a name="line.748"></a> |
| <FONT color="green">749</FONT> *<a name="line.749"></a> |
| <FONT color="green">750</FONT> * @return The next node handle in the iteration, or END.<a name="line.750"></a> |
| <FONT color="green">751</FONT> */<a name="line.751"></a> |
| <FONT color="green">752</FONT> public int next() {<a name="line.752"></a> |
| <FONT color="green">753</FONT> int nodeHandle;<a name="line.753"></a> |
| <FONT color="green">754</FONT> <a name="line.754"></a> |
| <FONT color="green">755</FONT> // If at most one key value or at most one string argument to id<a name="line.755"></a> |
| <FONT color="green">756</FONT> // resulted in nodes being returned, use the IntegerArray<a name="line.756"></a> |
| <FONT color="green">757</FONT> // stored at _nodes directly. This relies on the fact that the<a name="line.757"></a> |
| <FONT color="green">758</FONT> // IntegerArray never includes duplicate nodes and is always stored<a name="line.758"></a> |
| <FONT color="green">759</FONT> // in document order.<a name="line.759"></a> |
| <FONT color="green">760</FONT> if (_nodes != null) {<a name="line.760"></a> |
| <FONT color="green">761</FONT> if (_position < _nodes.cardinality()) {<a name="line.761"></a> |
| <FONT color="green">762</FONT> nodeHandle = returnNode(_nodes.at(_position));<a name="line.762"></a> |
| <FONT color="green">763</FONT> } else {<a name="line.763"></a> |
| <FONT color="green">764</FONT> nodeHandle = DTMAxisIterator.END;<a name="line.764"></a> |
| <FONT color="green">765</FONT> }<a name="line.765"></a> |
| <FONT color="green">766</FONT> } else {<a name="line.766"></a> |
| <FONT color="green">767</FONT> nodeHandle = super.next();<a name="line.767"></a> |
| <FONT color="green">768</FONT> }<a name="line.768"></a> |
| <FONT color="green">769</FONT> <a name="line.769"></a> |
| <FONT color="green">770</FONT> return nodeHandle;<a name="line.770"></a> |
| <FONT color="green">771</FONT> }<a name="line.771"></a> |
| <FONT color="green">772</FONT> <a name="line.772"></a> |
| <FONT color="green">773</FONT> /**<a name="line.773"></a> |
| <FONT color="green">774</FONT> * Resets the iterator to the last start node.<a name="line.774"></a> |
| <FONT color="green">775</FONT> *<a name="line.775"></a> |
| <FONT color="green">776</FONT> * @return A DTMAxisIterator, which may or may not be the same as this<a name="line.776"></a> |
| <FONT color="green">777</FONT> * iterator.<a name="line.777"></a> |
| <FONT color="green">778</FONT> */<a name="line.778"></a> |
| <FONT color="green">779</FONT> public DTMAxisIterator reset() {<a name="line.779"></a> |
| <FONT color="green">780</FONT> if (_nodes == null) {<a name="line.780"></a> |
| <FONT color="green">781</FONT> init();<a name="line.781"></a> |
| <FONT color="green">782</FONT> } else {<a name="line.782"></a> |
| <FONT color="green">783</FONT> super.reset();<a name="line.783"></a> |
| <FONT color="green">784</FONT> }<a name="line.784"></a> |
| <FONT color="green">785</FONT> <a name="line.785"></a> |
| <FONT color="green">786</FONT> return resetPosition();<a name="line.786"></a> |
| <FONT color="green">787</FONT> }<a name="line.787"></a> |
| <FONT color="green">788</FONT> <a name="line.788"></a> |
| <FONT color="green">789</FONT> /**<a name="line.789"></a> |
| <FONT color="green">790</FONT> * Evaluate the reference to the <code>key</code> or <code>id</code><a name="line.790"></a> |
| <FONT color="green">791</FONT> * function with the context specified by {@link #setStartNode(int)}<a name="line.791"></a> |
| <FONT color="green">792</FONT> * and set up this iterator to iterate over the DTM nodes that are<a name="line.792"></a> |
| <FONT color="green">793</FONT> * to be returned.<a name="line.793"></a> |
| <FONT color="green">794</FONT> */<a name="line.794"></a> |
| <FONT color="green">795</FONT> protected void init() {<a name="line.795"></a> |
| <FONT color="green">796</FONT> super.init();<a name="line.796"></a> |
| <FONT color="green">797</FONT> _position = 0;<a name="line.797"></a> |
| <FONT color="green">798</FONT> <a name="line.798"></a> |
| <FONT color="green">799</FONT> // All nodes retrieved are in the same document<a name="line.799"></a> |
| <FONT color="green">800</FONT> int rootHandle = _dom.getAxisIterator(Axis.ROOT)<a name="line.800"></a> |
| <FONT color="green">801</FONT> .setStartNode(_startNode).next();<a name="line.801"></a> |
| <FONT color="green">802</FONT> <a name="line.802"></a> |
| <FONT color="green">803</FONT> // Is the argument not a node set?<a name="line.803"></a> |
| <FONT color="green">804</FONT> if (_keyValueIterator == null) {<a name="line.804"></a> |
| <FONT color="green">805</FONT> // Look up nodes returned for the single string argument<a name="line.805"></a> |
| <FONT color="green">806</FONT> _nodes = lookupNodes(rootHandle, _keyValue);<a name="line.806"></a> |
| <FONT color="green">807</FONT> <a name="line.807"></a> |
| <FONT color="green">808</FONT> if (_nodes == null) {<a name="line.808"></a> |
| <FONT color="green">809</FONT> _nodes = EMPTY_NODES;<a name="line.809"></a> |
| <FONT color="green">810</FONT> }<a name="line.810"></a> |
| <FONT color="green">811</FONT> } else {<a name="line.811"></a> |
| <FONT color="green">812</FONT> DTMAxisIterator keyValues = _keyValueIterator.reset();<a name="line.812"></a> |
| <FONT color="green">813</FONT> int retrievedKeyValueIdx = 0;<a name="line.813"></a> |
| <FONT color="green">814</FONT> boolean foundNodes = false;<a name="line.814"></a> |
| <FONT color="green">815</FONT> <a name="line.815"></a> |
| <FONT color="green">816</FONT> _nodes = null;<a name="line.816"></a> |
| <FONT color="green">817</FONT> <a name="line.817"></a> |
| <FONT color="green">818</FONT> // For each node in the node set argument, get the string value<a name="line.818"></a> |
| <FONT color="green">819</FONT> // and look up the nodes returned by key or id for that string<a name="line.819"></a> |
| <FONT color="green">820</FONT> // value. If at most one string value has nodes associated,<a name="line.820"></a> |
| <FONT color="green">821</FONT> // the nodes will be stored in _nodes; otherwise, the nodes<a name="line.821"></a> |
| <FONT color="green">822</FONT> // will be placed in a heap.<a name="line.822"></a> |
| <FONT color="green">823</FONT> for (int keyValueNode = keyValues.next();<a name="line.823"></a> |
| <FONT color="green">824</FONT> keyValueNode != DTMAxisIterator.END;<a name="line.824"></a> |
| <FONT color="green">825</FONT> keyValueNode = keyValues.next()) {<a name="line.825"></a> |
| <FONT color="green">826</FONT> <a name="line.826"></a> |
| <FONT color="green">827</FONT> String keyValue = BasisLibrary.stringF(keyValueNode, _dom);<a name="line.827"></a> |
| <FONT color="green">828</FONT> <a name="line.828"></a> |
| <FONT color="green">829</FONT> IntegerArray nodes = lookupNodes(rootHandle, keyValue);<a name="line.829"></a> |
| <FONT color="green">830</FONT> <a name="line.830"></a> |
| <FONT color="green">831</FONT> if (nodes != null) {<a name="line.831"></a> |
| <FONT color="green">832</FONT> if (!foundNodes) {<a name="line.832"></a> |
| <FONT color="green">833</FONT> _nodes = nodes;<a name="line.833"></a> |
| <FONT color="green">834</FONT> foundNodes = true;<a name="line.834"></a> |
| <FONT color="green">835</FONT> } else {<a name="line.835"></a> |
| <FONT color="green">836</FONT> if (_nodes != null) {<a name="line.836"></a> |
| <FONT color="green">837</FONT> addHeapNode(new KeyIndexHeapNode(_nodes));<a name="line.837"></a> |
| <FONT color="green">838</FONT> _nodes = null;<a name="line.838"></a> |
| <FONT color="green">839</FONT> }<a name="line.839"></a> |
| <FONT color="green">840</FONT> addHeapNode(new KeyIndexHeapNode(nodes));<a name="line.840"></a> |
| <FONT color="green">841</FONT> }<a name="line.841"></a> |
| <FONT color="green">842</FONT> }<a name="line.842"></a> |
| <FONT color="green">843</FONT> }<a name="line.843"></a> |
| <FONT color="green">844</FONT> <a name="line.844"></a> |
| <FONT color="green">845</FONT> if (!foundNodes) {<a name="line.845"></a> |
| <FONT color="green">846</FONT> _nodes = EMPTY_NODES;<a name="line.846"></a> |
| <FONT color="green">847</FONT> }<a name="line.847"></a> |
| <FONT color="green">848</FONT> }<a name="line.848"></a> |
| <FONT color="green">849</FONT> }<a name="line.849"></a> |
| <FONT color="green">850</FONT> <a name="line.850"></a> |
| <FONT color="green">851</FONT> /**<a name="line.851"></a> |
| <FONT color="green">852</FONT> * Returns the number of nodes in this iterator.<a name="line.852"></a> |
| <FONT color="green">853</FONT> *<a name="line.853"></a> |
| <FONT color="green">854</FONT> * @return the number of nodes<a name="line.854"></a> |
| <FONT color="green">855</FONT> */<a name="line.855"></a> |
| <FONT color="green">856</FONT> public int getLast() {<a name="line.856"></a> |
| <FONT color="green">857</FONT> // If nodes are stored in _nodes, take advantage of the fact that<a name="line.857"></a> |
| <FONT color="green">858</FONT> // there are no duplicates. Otherwise, fall back to the base heap<a name="line.858"></a> |
| <FONT color="green">859</FONT> // implementaiton and hope it does a good job with this.<a name="line.859"></a> |
| <FONT color="green">860</FONT> return (_nodes != null) ? _nodes.cardinality() : super.getLast();<a name="line.860"></a> |
| <FONT color="green">861</FONT> }<a name="line.861"></a> |
| <FONT color="green">862</FONT> <a name="line.862"></a> |
| <FONT color="green">863</FONT> /**<a name="line.863"></a> |
| <FONT color="green">864</FONT> * Return the node at the given position.<a name="line.864"></a> |
| <FONT color="green">865</FONT> *<a name="line.865"></a> |
| <FONT color="green">866</FONT> * @param position The position<a name="line.866"></a> |
| <FONT color="green">867</FONT> * @return The node at the given position.<a name="line.867"></a> |
| <FONT color="green">868</FONT> */<a name="line.868"></a> |
| <FONT color="green">869</FONT> public int getNodeByPosition(int position) {<a name="line.869"></a> |
| <FONT color="green">870</FONT> int node = DTMAxisIterator.END;<a name="line.870"></a> |
| <FONT color="green">871</FONT> <a name="line.871"></a> |
| <FONT color="green">872</FONT> // If nodes are stored in _nodes, take advantage of the fact that<a name="line.872"></a> |
| <FONT color="green">873</FONT> // there are no duplicates and they are stored in document order.<a name="line.873"></a> |
| <FONT color="green">874</FONT> // Otherwise, fall back to the base heap implementation to do a<a name="line.874"></a> |
| <FONT color="green">875</FONT> // good job with this.<a name="line.875"></a> |
| <FONT color="green">876</FONT> if (_nodes != null) {<a name="line.876"></a> |
| <FONT color="green">877</FONT> if (position > 0) {<a name="line.877"></a> |
| <FONT color="green">878</FONT> if (position <= _nodes.cardinality()) {<a name="line.878"></a> |
| <FONT color="green">879</FONT> _position = position;<a name="line.879"></a> |
| <FONT color="green">880</FONT> node = _nodes.at(position-1);<a name="line.880"></a> |
| <FONT color="green">881</FONT> } else {<a name="line.881"></a> |
| <FONT color="green">882</FONT> _position = _nodes.cardinality();<a name="line.882"></a> |
| <FONT color="green">883</FONT> }<a name="line.883"></a> |
| <FONT color="green">884</FONT> }<a name="line.884"></a> |
| <FONT color="green">885</FONT> } else {<a name="line.885"></a> |
| <FONT color="green">886</FONT> node = super.getNodeByPosition(position);<a name="line.886"></a> |
| <FONT color="green">887</FONT> }<a name="line.887"></a> |
| <FONT color="green">888</FONT> <a name="line.888"></a> |
| <FONT color="green">889</FONT> return node;<a name="line.889"></a> |
| <FONT color="green">890</FONT> }<a name="line.890"></a> |
| <FONT color="green">891</FONT> }<a name="line.891"></a> |
| <FONT color="green">892</FONT> }<a name="line.892"></a> |
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| </PRE> |
| </BODY> |
| </HTML> |
