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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: XPathEvaluatorImpl.java 1225443 2011-12-29 05:44:18Z mrglavas $<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.xpath.domapi;<a name="line.22"></a> |
| <FONT color="green">023</FONT> <a name="line.23"></a> |
| <FONT color="green">024</FONT> import javax.xml.transform.TransformerException;<a name="line.24"></a> |
| <FONT color="green">025</FONT> <a name="line.25"></a> |
| <FONT color="green">026</FONT> import org.apache.xml.utils.PrefixResolver;<a name="line.26"></a> |
| <FONT color="green">027</FONT> import org.apache.xpath.XPath;<a name="line.27"></a> |
| <FONT color="green">028</FONT> import org.apache.xpath.res.XPATHErrorResources;<a name="line.28"></a> |
| <FONT color="green">029</FONT> import org.apache.xpath.res.XPATHMessages;<a name="line.29"></a> |
| <FONT color="green">030</FONT> import org.w3c.dom.DOMException;<a name="line.30"></a> |
| <FONT color="green">031</FONT> import org.w3c.dom.Document;<a name="line.31"></a> |
| <FONT color="green">032</FONT> import org.w3c.dom.Node;<a name="line.32"></a> |
| <FONT color="green">033</FONT> import org.w3c.dom.xpath.XPathEvaluator;<a name="line.33"></a> |
| <FONT color="green">034</FONT> import org.w3c.dom.xpath.XPathException;<a name="line.34"></a> |
| <FONT color="green">035</FONT> import org.w3c.dom.xpath.XPathExpression;<a name="line.35"></a> |
| <FONT color="green">036</FONT> import org.w3c.dom.xpath.XPathNSResolver;<a name="line.36"></a> |
| <FONT color="green">037</FONT> <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> * The class provides an implementation of XPathEvaluator according <a name="line.40"></a> |
| <FONT color="green">041</FONT> * to the DOM L3 XPath Specification, Working Group Note 26 February 2004.<a name="line.41"></a> |
| <FONT color="green">042</FONT> *<a name="line.42"></a> |
| <FONT color="green">043</FONT> * <p>See also the <a href='http://www.w3.org/TR/2004/NOTE-DOM-Level-3-XPath-20040226'>Document Object Model (DOM) Level 3 XPath Specification</a>.</p><a name="line.43"></a> |
| <FONT color="green">044</FONT> * <a name="line.44"></a> |
| <FONT color="green">045</FONT> * </p>The evaluation of XPath expressions is provided by <a name="line.45"></a> |
| <FONT color="green">046</FONT> * <code>XPathEvaluator</code>, which will provide evaluation of XPath 1.0 <a name="line.46"></a> |
| <FONT color="green">047</FONT> * expressions with no specialized extension functions or variables. It is <a name="line.47"></a> |
| <FONT color="green">048</FONT> * expected that the <code>XPathEvaluator</code> interface will be <a name="line.48"></a> |
| <FONT color="green">049</FONT> * implemented on the same object which implements the <code>Document</code> <a name="line.49"></a> |
| <FONT color="green">050</FONT> * interface in an implementation which supports the XPath DOM module. <a name="line.50"></a> |
| <FONT color="green">051</FONT> * <code>XPathEvaluator</code> implementations may be available from other <a name="line.51"></a> |
| <FONT color="green">052</FONT> * sources that may provide support for special extension functions or <a name="line.52"></a> |
| <FONT color="green">053</FONT> * variables which are not defined in this specification.</p><a name="line.53"></a> |
| <FONT color="green">054</FONT> * <a name="line.54"></a> |
| <FONT color="green">055</FONT> * @see org.w3c.dom.xpath.XPathEvaluator<a name="line.55"></a> |
| <FONT color="green">056</FONT> * <a name="line.56"></a> |
| <FONT color="green">057</FONT> * @xsl.usage internal<a name="line.57"></a> |
| <FONT color="green">058</FONT> */<a name="line.58"></a> |
| <FONT color="green">059</FONT> public final class XPathEvaluatorImpl implements XPathEvaluator {<a name="line.59"></a> |
| <FONT color="green">060</FONT> <a name="line.60"></a> |
| <FONT color="green">061</FONT> /**<a name="line.61"></a> |
| <FONT color="green">062</FONT> * This prefix resolver is created whenever null is passed to the <a name="line.62"></a> |
| <FONT color="green">063</FONT> * evaluate method. Its purpose is to satisfy the DOM L3 XPath API<a name="line.63"></a> |
| <FONT color="green">064</FONT> * requirement that if a null prefix resolver is used, an exception <a name="line.64"></a> |
| <FONT color="green">065</FONT> * should only be thrown when an attempt is made to resolve a prefix.<a name="line.65"></a> |
| <FONT color="green">066</FONT> */<a name="line.66"></a> |
| <FONT color="green">067</FONT> private static class DummyPrefixResolver implements PrefixResolver {<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> * Constructor for DummyPrefixResolver.<a name="line.70"></a> |
| <FONT color="green">071</FONT> */<a name="line.71"></a> |
| <FONT color="green">072</FONT> DummyPrefixResolver() {}<a name="line.72"></a> |
| <FONT color="green">073</FONT> <a name="line.73"></a> |
| <FONT color="green">074</FONT> /**<a name="line.74"></a> |
| <FONT color="green">075</FONT> * @exception DOMException<a name="line.75"></a> |
| <FONT color="green">076</FONT> * NAMESPACE_ERR: Always throws this exceptionn<a name="line.76"></a> |
| <FONT color="green">077</FONT> *<a name="line.77"></a> |
| <FONT color="green">078</FONT> * @see org.apache.xml.utils.PrefixResolver#getNamespaceForPrefix(String, Node)<a name="line.78"></a> |
| <FONT color="green">079</FONT> */<a name="line.79"></a> |
| <FONT color="green">080</FONT> public String getNamespaceForPrefix(String prefix, Node context) {<a name="line.80"></a> |
| <FONT color="green">081</FONT> String fmsg = XPATHMessages.createXPATHMessage(XPATHErrorResources.ER_NULL_RESOLVER, null); <a name="line.81"></a> |
| <FONT color="green">082</FONT> throw new DOMException(DOMException.NAMESPACE_ERR, fmsg); // Unable to resolve prefix with null prefix resolver. <a name="line.82"></a> |
| <FONT color="green">083</FONT> }<a name="line.83"></a> |
| <FONT color="green">084</FONT> <a name="line.84"></a> |
| <FONT color="green">085</FONT> /**<a name="line.85"></a> |
| <FONT color="green">086</FONT> * @exception DOMException<a name="line.86"></a> |
| <FONT color="green">087</FONT> * NAMESPACE_ERR: Always throws this exceptionn<a name="line.87"></a> |
| <FONT color="green">088</FONT> * <a name="line.88"></a> |
| <FONT color="green">089</FONT> * @see org.apache.xml.utils.PrefixResolver#getNamespaceForPrefix(String)<a name="line.89"></a> |
| <FONT color="green">090</FONT> */<a name="line.90"></a> |
| <FONT color="green">091</FONT> public String getNamespaceForPrefix(String prefix) {<a name="line.91"></a> |
| <FONT color="green">092</FONT> return getNamespaceForPrefix(prefix,null);<a name="line.92"></a> |
| <FONT color="green">093</FONT> }<a name="line.93"></a> |
| <FONT color="green">094</FONT> <a name="line.94"></a> |
| <FONT color="green">095</FONT> /**<a name="line.95"></a> |
| <FONT color="green">096</FONT> * @see org.apache.xml.utils.PrefixResolver#handlesNullPrefixes()<a name="line.96"></a> |
| <FONT color="green">097</FONT> */<a name="line.97"></a> |
| <FONT color="green">098</FONT> public boolean handlesNullPrefixes() {<a name="line.98"></a> |
| <FONT color="green">099</FONT> return false;<a name="line.99"></a> |
| <FONT color="green">100</FONT> }<a name="line.100"></a> |
| <FONT color="green">101</FONT> <a name="line.101"></a> |
| <FONT color="green">102</FONT> /**<a name="line.102"></a> |
| <FONT color="green">103</FONT> * @see org.apache.xml.utils.PrefixResolver#getBaseIdentifier()<a name="line.103"></a> |
| <FONT color="green">104</FONT> */<a name="line.104"></a> |
| <FONT color="green">105</FONT> public String getBaseIdentifier() {<a name="line.105"></a> |
| <FONT color="green">106</FONT> return null;<a name="line.106"></a> |
| <FONT color="green">107</FONT> }<a name="line.107"></a> |
| <FONT color="green">108</FONT> <a name="line.108"></a> |
| <FONT color="green">109</FONT> }<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> * The document to be searched to parallel the case where the XPathEvaluator<a name="line.112"></a> |
| <FONT color="green">113</FONT> * is obtained by casting a Document.<a name="line.113"></a> |
| <FONT color="green">114</FONT> */ <a name="line.114"></a> |
| <FONT color="green">115</FONT> private final Document m_doc;<a name="line.115"></a> |
| <FONT color="green">116</FONT> <a name="line.116"></a> |
| <FONT color="green">117</FONT> /**<a name="line.117"></a> |
| <FONT color="green">118</FONT> * Constructor for XPathEvaluatorImpl.<a name="line.118"></a> |
| <FONT color="green">119</FONT> * <a name="line.119"></a> |
| <FONT color="green">120</FONT> * @param doc The document to be searched, to parallel the case where''<a name="line.120"></a> |
| <FONT color="green">121</FONT> * the XPathEvaluator is obtained by casting the document.<a name="line.121"></a> |
| <FONT color="green">122</FONT> */<a name="line.122"></a> |
| <FONT color="green">123</FONT> public XPathEvaluatorImpl(Document doc) {<a name="line.123"></a> |
| <FONT color="green">124</FONT> m_doc = doc;<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> /**<a name="line.127"></a> |
| <FONT color="green">128</FONT> * Constructor in the case that the XPath expression can be evaluated<a name="line.128"></a> |
| <FONT color="green">129</FONT> * without needing an XML document at all.<a name="line.129"></a> |
| <FONT color="green">130</FONT> *<a name="line.130"></a> |
| <FONT color="green">131</FONT> */<a name="line.131"></a> |
| <FONT color="green">132</FONT> public XPathEvaluatorImpl() {<a name="line.132"></a> |
| <FONT color="green">133</FONT> m_doc = null;<a name="line.133"></a> |
| <FONT color="green">134</FONT> }<a name="line.134"></a> |
| <FONT color="green">135</FONT> <a name="line.135"></a> |
| <FONT color="green">136</FONT> /**<a name="line.136"></a> |
| <FONT color="green">137</FONT> * Creates a parsed XPath expression with resolved namespaces. This is <a name="line.137"></a> |
| <FONT color="green">138</FONT> * useful when an expression will be reused in an application since it <a name="line.138"></a> |
| <FONT color="green">139</FONT> * makes it possible to compile the expression string into a more <a name="line.139"></a> |
| <FONT color="green">140</FONT> * efficient internal form and preresolve all namespace prefixes which <a name="line.140"></a> |
| <FONT color="green">141</FONT> * occur within the expression.<a name="line.141"></a> |
| <FONT color="green">142</FONT> * <a name="line.142"></a> |
| <FONT color="green">143</FONT> * @param expression The XPath expression string to be parsed.<a name="line.143"></a> |
| <FONT color="green">144</FONT> * @param resolver The <code>resolver</code> permits translation of <a name="line.144"></a> |
| <FONT color="green">145</FONT> * prefixes within the XPath expression into appropriate namespace URIs<a name="line.145"></a> |
| <FONT color="green">146</FONT> * . If this is specified as <code>null</code>, any namespace prefix <a name="line.146"></a> |
| <FONT color="green">147</FONT> * within the expression will result in <code>DOMException</code> <a name="line.147"></a> |
| <FONT color="green">148</FONT> * being thrown with the code <code>NAMESPACE_ERR</code>.<a name="line.148"></a> |
| <FONT color="green">149</FONT> * @return The compiled form of the XPath expression.<a name="line.149"></a> |
| <FONT color="green">150</FONT> * @exception XPathException<a name="line.150"></a> |
| <FONT color="green">151</FONT> * INVALID_EXPRESSION_ERR: Raised if the expression is not legal <a name="line.151"></a> |
| <FONT color="green">152</FONT> * according to the rules of the <code>XPathEvaluator</code>i<a name="line.152"></a> |
| <FONT color="green">153</FONT> * @exception DOMException<a name="line.153"></a> |
| <FONT color="green">154</FONT> * NAMESPACE_ERR: Raised if the expression contains namespace prefixes <a name="line.154"></a> |
| <FONT color="green">155</FONT> * which cannot be resolved by the specified <a name="line.155"></a> |
| <FONT color="green">156</FONT> * <code>XPathNSResolver</code>. <a name="line.156"></a> |
| <FONT color="green">157</FONT> * <a name="line.157"></a> |
| <FONT color="green">158</FONT> * @see org.w3c.dom.xpath.XPathEvaluator#createExpression(String, XPathNSResolver)<a name="line.158"></a> |
| <FONT color="green">159</FONT> */<a name="line.159"></a> |
| <FONT color="green">160</FONT> public XPathExpression createExpression(<a name="line.160"></a> |
| <FONT color="green">161</FONT> String expression,<a name="line.161"></a> |
| <FONT color="green">162</FONT> XPathNSResolver resolver)<a name="line.162"></a> |
| <FONT color="green">163</FONT> throws XPathException, DOMException {<a name="line.163"></a> |
| <FONT color="green">164</FONT> <a name="line.164"></a> |
| <FONT color="green">165</FONT> try {<a name="line.165"></a> |
| <FONT color="green">166</FONT> <a name="line.166"></a> |
| <FONT color="green">167</FONT> // If the resolver is null, create a dummy prefix resolver<a name="line.167"></a> |
| <FONT color="green">168</FONT> XPath xpath = new XPath(expression,null,<a name="line.168"></a> |
| <FONT color="green">169</FONT> ((null == resolver) ? new DummyPrefixResolver() : ((PrefixResolver)resolver)), <a name="line.169"></a> |
| <FONT color="green">170</FONT> XPath.SELECT);<a name="line.170"></a> |
| <FONT color="green">171</FONT> <a name="line.171"></a> |
| <FONT color="green">172</FONT> return new XPathExpressionImpl(xpath, m_doc);<a name="line.172"></a> |
| <FONT color="green">173</FONT> <a name="line.173"></a> |
| <FONT color="green">174</FONT> } catch (TransformerException e) {<a name="line.174"></a> |
| <FONT color="green">175</FONT> // Need to pass back exception code DOMException.NAMESPACE_ERR also.<a name="line.175"></a> |
| <FONT color="green">176</FONT> // Error found in DOM Level 3 XPath Test Suite.<a name="line.176"></a> |
| <FONT color="green">177</FONT> if(e instanceof XPathStylesheetDOM3Exception)<a name="line.177"></a> |
| <FONT color="green">178</FONT> throw new DOMException(DOMException.NAMESPACE_ERR,e.getMessageAndLocation());<a name="line.178"></a> |
| <FONT color="green">179</FONT> else<a name="line.179"></a> |
| <FONT color="green">180</FONT> throw new XPathException(XPathException.INVALID_EXPRESSION_ERR,e.getMessageAndLocation());<a name="line.180"></a> |
| <FONT color="green">181</FONT> <a name="line.181"></a> |
| <FONT color="green">182</FONT> }<a name="line.182"></a> |
| <FONT color="green">183</FONT> }<a name="line.183"></a> |
| <FONT color="green">184</FONT> <a name="line.184"></a> |
| <FONT color="green">185</FONT> /**<a name="line.185"></a> |
| <FONT color="green">186</FONT> * Adapts any DOM node to resolve namespaces so that an XPath expression <a name="line.186"></a> |
| <FONT color="green">187</FONT> * can be easily evaluated relative to the context of the node where it <a name="line.187"></a> |
| <FONT color="green">188</FONT> * appeared within the document. This adapter works like the DOM Level 3 <a name="line.188"></a> |
| <FONT color="green">189</FONT> * method <code>lookupNamespaceURI</code> on nodes in resolving the <a name="line.189"></a> |
| <FONT color="green">190</FONT> * namespaceURI from a given prefix using the current information available <a name="line.190"></a> |
| <FONT color="green">191</FONT> * in the node's hierarchy at the time lookupNamespaceURI is called, also <a name="line.191"></a> |
| <FONT color="green">192</FONT> * correctly resolving the implicit xml prefix.<a name="line.192"></a> |
| <FONT color="green">193</FONT> *<a name="line.193"></a> |
| <FONT color="green">194</FONT> * @param nodeResolver The node to be used as a context for namespace <a name="line.194"></a> |
| <FONT color="green">195</FONT> * resolution.<a name="line.195"></a> |
| <FONT color="green">196</FONT> * @return <code>XPathNSResolver</code> which resolves namespaces with <a name="line.196"></a> |
| <FONT color="green">197</FONT> * respect to the definitions in scope for a specified node.<a name="line.197"></a> |
| <FONT color="green">198</FONT> * <a name="line.198"></a> |
| <FONT color="green">199</FONT> * @see org.w3c.dom.xpath.XPathEvaluator#createNSResolver(Node)<a name="line.199"></a> |
| <FONT color="green">200</FONT> */<a name="line.200"></a> |
| <FONT color="green">201</FONT> public XPathNSResolver createNSResolver(Node nodeResolver) {<a name="line.201"></a> |
| <FONT color="green">202</FONT> <a name="line.202"></a> |
| <FONT color="green">203</FONT> return new XPathNSResolverImpl((nodeResolver.getNodeType() == Node.DOCUMENT_NODE)<a name="line.203"></a> |
| <FONT color="green">204</FONT> ? ((Document) nodeResolver).getDocumentElement() : nodeResolver);<a name="line.204"></a> |
| <FONT color="green">205</FONT> }<a name="line.205"></a> |
| <FONT color="green">206</FONT> <a name="line.206"></a> |
| <FONT color="green">207</FONT> /**<a name="line.207"></a> |
| <FONT color="green">208</FONT> * Evaluates an XPath expression string and returns a result of the <a name="line.208"></a> |
| <FONT color="green">209</FONT> * specified type if possible.<a name="line.209"></a> |
| <FONT color="green">210</FONT> * <a name="line.210"></a> |
| <FONT color="green">211</FONT> * @param expression The XPath expression string to be parsed and <a name="line.211"></a> |
| <FONT color="green">212</FONT> * evaluated.<a name="line.212"></a> |
| <FONT color="green">213</FONT> * @param contextNode The <code>context</code> is context node for the <a name="line.213"></a> |
| <FONT color="green">214</FONT> * evaluation of this XPath expression. If the XPathEvaluator was <a name="line.214"></a> |
| <FONT color="green">215</FONT> * obtained by casting the <code>Document</code> then this must be <a name="line.215"></a> |
| <FONT color="green">216</FONT> * owned by the same document and must be a <code>Document</code>, <a name="line.216"></a> |
| <FONT color="green">217</FONT> * <code>Element</code>, <code>Attribute</code>, <code>Text</code>, <a name="line.217"></a> |
| <FONT color="green">218</FONT> * <code>CDATASection</code>, <code>Comment</code>, <a name="line.218"></a> |
| <FONT color="green">219</FONT> * <code>ProcessingInstruction</code>, or <code>XPathNamespace</code> <a name="line.219"></a> |
| <FONT color="green">220</FONT> * node. If the context node is a <code>Text</code> or a <a name="line.220"></a> |
| <FONT color="green">221</FONT> * <code>CDATASection</code>, then the context is interpreted as the <a name="line.221"></a> |
| <FONT color="green">222</FONT> * whole logical text node as seen by XPath, unless the node is empty <a name="line.222"></a> |
| <FONT color="green">223</FONT> * in which case it may not serve as the XPath context.<a name="line.223"></a> |
| <FONT color="green">224</FONT> * @param resolver The <code>resolver</code> permits translation of <a name="line.224"></a> |
| <FONT color="green">225</FONT> * prefixes within the XPath expression into appropriate namespace URIs<a name="line.225"></a> |
| <FONT color="green">226</FONT> * . If this is specified as <code>null</code>, any namespace prefix <a name="line.226"></a> |
| <FONT color="green">227</FONT> * within the expression will result in <code>DOMException</code> <a name="line.227"></a> |
| <FONT color="green">228</FONT> * being thrown with the code <code>NAMESPACE_ERR</code>.<a name="line.228"></a> |
| <FONT color="green">229</FONT> * @param type If a specific <code>type</code> is specified, then the <a name="line.229"></a> |
| <FONT color="green">230</FONT> * result will be coerced to return the specified type relying on <a name="line.230"></a> |
| <FONT color="green">231</FONT> * XPath type conversions and fail if the desired coercion is not <a name="line.231"></a> |
| <FONT color="green">232</FONT> * possible. This must be one of the type codes of <a name="line.232"></a> |
| <FONT color="green">233</FONT> * <code>XPathResult</code>.<a name="line.233"></a> |
| <FONT color="green">234</FONT> * @param result The <code>result</code> specifies a specific result <a name="line.234"></a> |
| <FONT color="green">235</FONT> * object which may be reused and returned by this method. If this is <a name="line.235"></a> |
| <FONT color="green">236</FONT> * specified as <code>null</code>or the implementation does not reuse <a name="line.236"></a> |
| <FONT color="green">237</FONT> * the specified result, a new result object will be constructed and <a name="line.237"></a> |
| <FONT color="green">238</FONT> * returned.For XPath 1.0 results, this object will be of type <a name="line.238"></a> |
| <FONT color="green">239</FONT> * <code>XPathResult</code>.<a name="line.239"></a> |
| <FONT color="green">240</FONT> * @return The result of the evaluation of the XPath expression.For XPath <a name="line.240"></a> |
| <FONT color="green">241</FONT> * 1.0 results, this object will be of type <code>XPathResult</code>.<a name="line.241"></a> |
| <FONT color="green">242</FONT> * @exception XPathException<a name="line.242"></a> |
| <FONT color="green">243</FONT> * INVALID_EXPRESSION_ERR: Raised if the expression is not legal <a name="line.243"></a> |
| <FONT color="green">244</FONT> * according to the rules of the <code>XPathEvaluator</code>i<a name="line.244"></a> |
| <FONT color="green">245</FONT> * <br>TYPE_ERR: Raised if the result cannot be converted to return the <a name="line.245"></a> |
| <FONT color="green">246</FONT> * specified type.<a name="line.246"></a> |
| <FONT color="green">247</FONT> * @exception DOMException<a name="line.247"></a> |
| <FONT color="green">248</FONT> * NAMESPACE_ERR: Raised if the expression contains namespace prefixes <a name="line.248"></a> |
| <FONT color="green">249</FONT> * which cannot be resolved by the specified <a name="line.249"></a> |
| <FONT color="green">250</FONT> * <code>XPathNSResolver</code>.<a name="line.250"></a> |
| <FONT color="green">251</FONT> * <br>WRONG_DOCUMENT_ERR: The Node is from a document that is not <a name="line.251"></a> |
| <FONT color="green">252</FONT> * supported by this XPathEvaluator.<a name="line.252"></a> |
| <FONT color="green">253</FONT> * <br>NOT_SUPPORTED_ERR: The Node is not a type permitted as an XPath <a name="line.253"></a> |
| <FONT color="green">254</FONT> * context node.<a name="line.254"></a> |
| <FONT color="green">255</FONT> * <a name="line.255"></a> |
| <FONT color="green">256</FONT> * @see org.w3c.dom.xpath.XPathEvaluator#evaluate(String, Node, XPathNSResolver, short, XPathResult)<a name="line.256"></a> |
| <FONT color="green">257</FONT> */<a name="line.257"></a> |
| <FONT color="green">258</FONT> public Object evaluate(<a name="line.258"></a> |
| <FONT color="green">259</FONT> String expression,<a name="line.259"></a> |
| <FONT color="green">260</FONT> Node contextNode,<a name="line.260"></a> |
| <FONT color="green">261</FONT> XPathNSResolver resolver,<a name="line.261"></a> |
| <FONT color="green">262</FONT> short type,<a name="line.262"></a> |
| <FONT color="green">263</FONT> Object result)<a name="line.263"></a> |
| <FONT color="green">264</FONT> throws XPathException, DOMException {<a name="line.264"></a> |
| <FONT color="green">265</FONT> <a name="line.265"></a> |
| <FONT color="green">266</FONT> XPathExpression xpathExpression = createExpression(expression, resolver);<a name="line.266"></a> |
| <FONT color="green">267</FONT> <a name="line.267"></a> |
| <FONT color="green">268</FONT> return xpathExpression.evaluate(contextNode, type, result);<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> }<a name="line.271"></a> |
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| </PRE> |
| </BODY> |
| </HTML> |
