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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: ExtensionHandlerGeneral.java 469672 2006-10-31 21:56:19Z minchau $<a name="line.19"></a> |
| <FONT color="green">020</FONT> */<a name="line.20"></a> |
| <FONT color="green">021</FONT> package org.apache.xalan.extensions;<a name="line.21"></a> |
| <FONT color="green">022</FONT> <a name="line.22"></a> |
| <FONT color="green">023</FONT> import java.io.IOException;<a name="line.23"></a> |
| <FONT color="green">024</FONT> import java.io.InputStream;<a name="line.24"></a> |
| <FONT color="green">025</FONT> import java.lang.reflect.Method;<a name="line.25"></a> |
| <FONT color="green">026</FONT> import java.net.URL;<a name="line.26"></a> |
| <FONT color="green">027</FONT> import java.net.URLConnection;<a name="line.27"></a> |
| <FONT color="green">028</FONT> import java.util.Hashtable;<a name="line.28"></a> |
| <FONT color="green">029</FONT> import java.util.Vector;<a name="line.29"></a> |
| <FONT color="green">030</FONT> <a name="line.30"></a> |
| <FONT color="green">031</FONT> import javax.xml.transform.TransformerException;<a name="line.31"></a> |
| <FONT color="green">032</FONT> <a name="line.32"></a> |
| <FONT color="green">033</FONT> import org.apache.xml.res.XMLErrorResources;<a name="line.33"></a> |
| <FONT color="green">034</FONT> import org.apache.xml.res.XMLMessages;<a name="line.34"></a> |
| <FONT color="green">035</FONT> <a name="line.35"></a> |
| <FONT color="green">036</FONT> import org.apache.xalan.res.XSLMessages;<a name="line.36"></a> |
| <FONT color="green">037</FONT> import org.apache.xalan.res.XSLTErrorResources;<a name="line.37"></a> |
| <FONT color="green">038</FONT> import org.apache.xalan.templates.ElemTemplateElement;<a name="line.38"></a> |
| <FONT color="green">039</FONT> import org.apache.xalan.templates.Stylesheet;<a name="line.39"></a> |
| <FONT color="green">040</FONT> import org.apache.xalan.transformer.TransformerImpl;<a name="line.40"></a> |
| <FONT color="green">041</FONT> import org.apache.xml.dtm.DTMIterator;<a name="line.41"></a> |
| <FONT color="green">042</FONT> import org.apache.xml.dtm.ref.DTMNodeList;<a name="line.42"></a> |
| <FONT color="green">043</FONT> import org.apache.xml.utils.StringVector;<a name="line.43"></a> |
| <FONT color="green">044</FONT> import org.apache.xml.utils.SystemIDResolver;<a name="line.44"></a> |
| <FONT color="green">045</FONT> import org.apache.xpath.XPathProcessorException;<a name="line.45"></a> |
| <FONT color="green">046</FONT> import org.apache.xpath.functions.FuncExtFunction;<a name="line.46"></a> |
| <FONT color="green">047</FONT> import org.apache.xpath.objects.XObject;<a name="line.47"></a> |
| <FONT color="green">048</FONT> <a name="line.48"></a> |
| <FONT color="green">049</FONT> /**<a name="line.49"></a> |
| <FONT color="green">050</FONT> * Class handling an extension namespace for XPath. Provides functions<a name="line.50"></a> |
| <FONT color="green">051</FONT> * to test a function's existence and call a function<a name="line.51"></a> |
| <FONT color="green">052</FONT> *<a name="line.52"></a> |
| <FONT color="green">053</FONT> * @author Sanjiva Weerawarana (sanjiva@watson.ibm.com)<a name="line.53"></a> |
| <FONT color="green">054</FONT> * @xsl.usage internal<a name="line.54"></a> |
| <FONT color="green">055</FONT> */<a name="line.55"></a> |
| <FONT color="green">056</FONT> public class ExtensionHandlerGeneral extends ExtensionHandler<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> /** script source to run (if any) */<a name="line.59"></a> |
| <FONT color="green">060</FONT> private String m_scriptSrc; <a name="line.60"></a> |
| <FONT color="green">061</FONT> <a name="line.61"></a> |
| <FONT color="green">062</FONT> /** URL of source of script (if any) */<a name="line.62"></a> |
| <FONT color="green">063</FONT> private String m_scriptSrcURL; <a name="line.63"></a> |
| <FONT color="green">064</FONT> <a name="line.64"></a> |
| <FONT color="green">065</FONT> /** functions of namespace */<a name="line.65"></a> |
| <FONT color="green">066</FONT> private Hashtable m_functions = new Hashtable(); <a name="line.66"></a> |
| <FONT color="green">067</FONT> <a name="line.67"></a> |
| <FONT color="green">068</FONT> /** elements of namespace */<a name="line.68"></a> |
| <FONT color="green">069</FONT> private Hashtable m_elements = new Hashtable(); <a name="line.69"></a> |
| <FONT color="green">070</FONT> <a name="line.70"></a> |
| <FONT color="green">071</FONT> // BSF objects used to invoke BSF by reflection. Do not import the BSF classes<a name="line.71"></a> |
| <FONT color="green">072</FONT> // since we don't want a compile dependency on BSF.<a name="line.72"></a> |
| <FONT color="green">073</FONT> <a name="line.73"></a> |
| <FONT color="green">074</FONT> /** BSF manager used to run scripts */<a name="line.74"></a> |
| <FONT color="green">075</FONT> private Object m_engine;<a name="line.75"></a> |
| <FONT color="green">076</FONT> <a name="line.76"></a> |
| <FONT color="green">077</FONT> /** Engine call to invoke scripts */<a name="line.77"></a> |
| <FONT color="green">078</FONT> private Method m_engineCall = null;<a name="line.78"></a> |
| <FONT color="green">079</FONT> <a name="line.79"></a> |
| <FONT color="green">080</FONT> // static fields<a name="line.80"></a> |
| <FONT color="green">081</FONT> <a name="line.81"></a> |
| <FONT color="green">082</FONT> /** BSFManager package name */<a name="line.82"></a> |
| <FONT color="green">083</FONT> private static String BSF_MANAGER ;<a name="line.83"></a> |
| <FONT color="green">084</FONT> <a name="line.84"></a> |
| <FONT color="green">085</FONT> /** Default BSFManager name */<a name="line.85"></a> |
| <FONT color="green">086</FONT> private static final String DEFAULT_BSF_MANAGER = "org.apache.bsf.BSFManager";<a name="line.86"></a> |
| <FONT color="green">087</FONT> <a name="line.87"></a> |
| <FONT color="green">088</FONT> /** Property name to load the BSFManager class */<a name="line.88"></a> |
| <FONT color="green">089</FONT> private static final String propName = "org.apache.xalan.extensions.bsf.BSFManager";<a name="line.89"></a> |
| <FONT color="green">090</FONT> <a name="line.90"></a> |
| <FONT color="green">091</FONT> /** Integer Zero */<a name="line.91"></a> |
| <FONT color="green">092</FONT> private static final Integer ZEROINT = new Integer(0);<a name="line.92"></a> |
| <FONT color="green">093</FONT> <a name="line.93"></a> |
| <FONT color="green">094</FONT> static{<a name="line.94"></a> |
| <FONT color="green">095</FONT> BSF_MANAGER = ObjectFactory.lookUpFactoryClassName(propName, null, null);<a name="line.95"></a> |
| <FONT color="green">096</FONT> <a name="line.96"></a> |
| <FONT color="green">097</FONT> if (BSF_MANAGER == null){<a name="line.97"></a> |
| <FONT color="green">098</FONT> BSF_MANAGER = DEFAULT_BSF_MANAGER; <a name="line.98"></a> |
| <FONT color="green">099</FONT> } <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> * Construct a new extension namespace handler given all the information<a name="line.103"></a> |
| <FONT color="green">104</FONT> * needed.<a name="line.104"></a> |
| <FONT color="green">105</FONT> *<a name="line.105"></a> |
| <FONT color="green">106</FONT> * @param namespaceUri the extension namespace URI that I'm implementing<a name="line.106"></a> |
| <FONT color="green">107</FONT> * @param elemNames Vector of element names<a name="line.107"></a> |
| <FONT color="green">108</FONT> * @param funcNames string containing list of functions of extension NS<a name="line.108"></a> |
| <FONT color="green">109</FONT> * @param scriptLang Scripting language of implementation<a name="line.109"></a> |
| <FONT color="green">110</FONT> * @param scriptSrcURL URL of source script<a name="line.110"></a> |
| <FONT color="green">111</FONT> * @param scriptSrc the actual script code (if any)<a name="line.111"></a> |
| <FONT color="green">112</FONT> * @param systemId<a name="line.112"></a> |
| <FONT color="green">113</FONT> *<a name="line.113"></a> |
| <FONT color="green">114</FONT> * @throws TransformerException<a name="line.114"></a> |
| <FONT color="green">115</FONT> */<a name="line.115"></a> |
| <FONT color="green">116</FONT> public ExtensionHandlerGeneral(<a name="line.116"></a> |
| <FONT color="green">117</FONT> String namespaceUri, StringVector elemNames, StringVector funcNames, String scriptLang, String scriptSrcURL, String scriptSrc, String systemId)<a name="line.117"></a> |
| <FONT color="green">118</FONT> throws TransformerException<a name="line.118"></a> |
| <FONT color="green">119</FONT> {<a name="line.119"></a> |
| <FONT color="green">120</FONT> <a name="line.120"></a> |
| <FONT color="green">121</FONT> super(namespaceUri, scriptLang);<a name="line.121"></a> |
| <FONT color="green">122</FONT> <a name="line.122"></a> |
| <FONT color="green">123</FONT> if (elemNames != null)<a name="line.123"></a> |
| <FONT color="green">124</FONT> {<a name="line.124"></a> |
| <FONT color="green">125</FONT> Object junk = new Object();<a name="line.125"></a> |
| <FONT color="green">126</FONT> int n = elemNames.size();<a name="line.126"></a> |
| <FONT color="green">127</FONT> <a name="line.127"></a> |
| <FONT color="green">128</FONT> for (int i = 0; i < n; i++)<a name="line.128"></a> |
| <FONT color="green">129</FONT> {<a name="line.129"></a> |
| <FONT color="green">130</FONT> String tok = elemNames.elementAt(i);<a name="line.130"></a> |
| <FONT color="green">131</FONT> <a name="line.131"></a> |
| <FONT color="green">132</FONT> m_elements.put(tok, junk); // just stick it in there basically<a name="line.132"></a> |
| <FONT color="green">133</FONT> }<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> if (funcNames != null)<a name="line.136"></a> |
| <FONT color="green">137</FONT> {<a name="line.137"></a> |
| <FONT color="green">138</FONT> Object junk = new Object();<a name="line.138"></a> |
| <FONT color="green">139</FONT> int n = funcNames.size();<a name="line.139"></a> |
| <FONT color="green">140</FONT> <a name="line.140"></a> |
| <FONT color="green">141</FONT> for (int i = 0; i < n; i++)<a name="line.141"></a> |
| <FONT color="green">142</FONT> {<a name="line.142"></a> |
| <FONT color="green">143</FONT> String tok = funcNames.elementAt(i);<a name="line.143"></a> |
| <FONT color="green">144</FONT> <a name="line.144"></a> |
| <FONT color="green">145</FONT> m_functions.put(tok, junk); // just stick it in there basically<a name="line.145"></a> |
| <FONT color="green">146</FONT> }<a name="line.146"></a> |
| <FONT color="green">147</FONT> }<a name="line.147"></a> |
| <FONT color="green">148</FONT> <a name="line.148"></a> |
| <FONT color="green">149</FONT> m_scriptSrcURL = scriptSrcURL;<a name="line.149"></a> |
| <FONT color="green">150</FONT> m_scriptSrc = scriptSrc;<a name="line.150"></a> |
| <FONT color="green">151</FONT> <a name="line.151"></a> |
| <FONT color="green">152</FONT> if (m_scriptSrcURL != null)<a name="line.152"></a> |
| <FONT color="green">153</FONT> {<a name="line.153"></a> |
| <FONT color="green">154</FONT> URL url = null;<a name="line.154"></a> |
| <FONT color="green">155</FONT> try{<a name="line.155"></a> |
| <FONT color="green">156</FONT> url = new URL(m_scriptSrcURL);<a name="line.156"></a> |
| <FONT color="green">157</FONT> }<a name="line.157"></a> |
| <FONT color="green">158</FONT> catch (java.net.MalformedURLException mue)<a name="line.158"></a> |
| <FONT color="green">159</FONT> {<a name="line.159"></a> |
| <FONT color="green">160</FONT> int indexOfColon = m_scriptSrcURL.indexOf(':');<a name="line.160"></a> |
| <FONT color="green">161</FONT> int indexOfSlash = m_scriptSrcURL.indexOf('/');<a name="line.161"></a> |
| <FONT color="green">162</FONT> <a name="line.162"></a> |
| <FONT color="green">163</FONT> if ((indexOfColon != -1) && (indexOfSlash != -1)<a name="line.163"></a> |
| <FONT color="green">164</FONT> && (indexOfColon < indexOfSlash))<a name="line.164"></a> |
| <FONT color="green">165</FONT> {<a name="line.165"></a> |
| <FONT color="green">166</FONT> // The url is absolute.<a name="line.166"></a> |
| <FONT color="green">167</FONT> url = null;<a name="line.167"></a> |
| <FONT color="green">168</FONT> throw new TransformerException(XSLMessages.createMessage(XSLTErrorResources.ER_COULD_NOT_FIND_EXTERN_SCRIPT, new Object[]{m_scriptSrcURL}), mue); //"src attribute not yet supported for "<a name="line.168"></a> |
| <FONT color="green">169</FONT> //+ scriptLang);<a name="line.169"></a> |
| <FONT color="green">170</FONT> }<a name="line.170"></a> |
| <FONT color="green">171</FONT> else<a name="line.171"></a> |
| <FONT color="green">172</FONT> {<a name="line.172"></a> |
| <FONT color="green">173</FONT> try{<a name="line.173"></a> |
| <FONT color="green">174</FONT> url = new URL(new URL(SystemIDResolver.getAbsoluteURI(systemId)), m_scriptSrcURL); <a name="line.174"></a> |
| <FONT color="green">175</FONT> } <a name="line.175"></a> |
| <FONT color="green">176</FONT> catch (java.net.MalformedURLException mue2)<a name="line.176"></a> |
| <FONT color="green">177</FONT> {<a name="line.177"></a> |
| <FONT color="green">178</FONT> throw new TransformerException(XSLMessages.createMessage(XSLTErrorResources.ER_COULD_NOT_FIND_EXTERN_SCRIPT, new Object[]{m_scriptSrcURL}), mue2); //"src attribute not yet supported for "<a name="line.178"></a> |
| <FONT color="green">179</FONT> //+ scriptLang);<a name="line.179"></a> |
| <FONT color="green">180</FONT> }<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> if (url != null)<a name="line.183"></a> |
| <FONT color="green">184</FONT> {<a name="line.184"></a> |
| <FONT color="green">185</FONT> try<a name="line.185"></a> |
| <FONT color="green">186</FONT> {<a name="line.186"></a> |
| <FONT color="green">187</FONT> URLConnection uc = url.openConnection();<a name="line.187"></a> |
| <FONT color="green">188</FONT> InputStream is = uc.getInputStream();<a name="line.188"></a> |
| <FONT color="green">189</FONT> byte []bArray = new byte[uc.getContentLength()];<a name="line.189"></a> |
| <FONT color="green">190</FONT> is.read(bArray);<a name="line.190"></a> |
| <FONT color="green">191</FONT> m_scriptSrc = new String(bArray);<a name="line.191"></a> |
| <FONT color="green">192</FONT> <a name="line.192"></a> |
| <FONT color="green">193</FONT> }<a name="line.193"></a> |
| <FONT color="green">194</FONT> catch (IOException ioe)<a name="line.194"></a> |
| <FONT color="green">195</FONT> {<a name="line.195"></a> |
| <FONT color="green">196</FONT> throw new TransformerException(XSLMessages.createMessage(XSLTErrorResources.ER_COULD_NOT_FIND_EXTERN_SCRIPT, new Object[]{m_scriptSrcURL}), ioe); //"src attribute not yet supported for "<a name="line.196"></a> |
| <FONT color="green">197</FONT> //+ scriptLang);<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> }<a name="line.201"></a> |
| <FONT color="green">202</FONT> <a name="line.202"></a> |
| <FONT color="green">203</FONT> Object manager = null;<a name="line.203"></a> |
| <FONT color="green">204</FONT> try<a name="line.204"></a> |
| <FONT color="green">205</FONT> {<a name="line.205"></a> |
| <FONT color="green">206</FONT> manager = ObjectFactory.newInstance(<a name="line.206"></a> |
| <FONT color="green">207</FONT> BSF_MANAGER, ObjectFactory.findClassLoader(), true);<a name="line.207"></a> |
| <FONT color="green">208</FONT> }<a name="line.208"></a> |
| <FONT color="green">209</FONT> catch (ObjectFactory.ConfigurationError e)<a name="line.209"></a> |
| <FONT color="green">210</FONT> {<a name="line.210"></a> |
| <FONT color="green">211</FONT> e.printStackTrace();<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> if (manager == null)<a name="line.214"></a> |
| <FONT color="green">215</FONT> {<a name="line.215"></a> |
| <FONT color="green">216</FONT> throw new TransformerException(XSLMessages.createMessage(XSLTErrorResources.ER_CANNOT_INIT_BSFMGR, null)); //"Could not initialize BSF manager");<a name="line.216"></a> |
| <FONT color="green">217</FONT> }<a name="line.217"></a> |
| <FONT color="green">218</FONT> <a name="line.218"></a> |
| <FONT color="green">219</FONT> try<a name="line.219"></a> |
| <FONT color="green">220</FONT> {<a name="line.220"></a> |
| <FONT color="green">221</FONT> Method loadScriptingEngine = manager.getClass()<a name="line.221"></a> |
| <FONT color="green">222</FONT> .getMethod("loadScriptingEngine", new Class[]{ String.class });<a name="line.222"></a> |
| <FONT color="green">223</FONT> <a name="line.223"></a> |
| <FONT color="green">224</FONT> m_engine = loadScriptingEngine.invoke(manager,<a name="line.224"></a> |
| <FONT color="green">225</FONT> new Object[]{ scriptLang });<a name="line.225"></a> |
| <FONT color="green">226</FONT> <a name="line.226"></a> |
| <FONT color="green">227</FONT> Method engineExec = m_engine.getClass().getMethod("exec",<a name="line.227"></a> |
| <FONT color="green">228</FONT> new Class[]{ String.class, Integer.TYPE, Integer.TYPE, Object.class });<a name="line.228"></a> |
| <FONT color="green">229</FONT> <a name="line.229"></a> |
| <FONT color="green">230</FONT> // "Compile" the program<a name="line.230"></a> |
| <FONT color="green">231</FONT> engineExec.invoke(m_engine,<a name="line.231"></a> |
| <FONT color="green">232</FONT> new Object[]{ "XalanScript", ZEROINT, ZEROINT, m_scriptSrc });<a name="line.232"></a> |
| <FONT color="green">233</FONT> }<a name="line.233"></a> |
| <FONT color="green">234</FONT> catch (Exception e)<a name="line.234"></a> |
| <FONT color="green">235</FONT> {<a name="line.235"></a> |
| <FONT color="green">236</FONT> e.printStackTrace();<a name="line.236"></a> |
| <FONT color="green">237</FONT> <a name="line.237"></a> |
| <FONT color="green">238</FONT> throw new TransformerException(XSLMessages.createMessage(XSLTErrorResources.ER_CANNOT_CMPL_EXTENSN, null), e); //"Could not compile extension", e);<a name="line.238"></a> |
| <FONT color="green">239</FONT> }<a name="line.239"></a> |
| <FONT color="green">240</FONT> }<a name="line.240"></a> |
| <FONT color="green">241</FONT> <a name="line.241"></a> |
| <FONT color="green">242</FONT> /**<a name="line.242"></a> |
| <FONT color="green">243</FONT> * Tests whether a certain function name is known within this namespace.<a name="line.243"></a> |
| <FONT color="green">244</FONT> * @param function name of the function being tested<a name="line.244"></a> |
| <FONT color="green">245</FONT> * @return true if its known, false if not.<a name="line.245"></a> |
| <FONT color="green">246</FONT> */<a name="line.246"></a> |
| <FONT color="green">247</FONT> public boolean isFunctionAvailable(String function)<a name="line.247"></a> |
| <FONT color="green">248</FONT> {<a name="line.248"></a> |
| <FONT color="green">249</FONT> return (m_functions.get(function) != null);<a name="line.249"></a> |
| <FONT color="green">250</FONT> }<a name="line.250"></a> |
| <FONT color="green">251</FONT> <a name="line.251"></a> |
| <FONT color="green">252</FONT> /**<a name="line.252"></a> |
| <FONT color="green">253</FONT> * Tests whether a certain element name is known within this namespace.<a name="line.253"></a> |
| <FONT color="green">254</FONT> * @param element name of the element being tested<a name="line.254"></a> |
| <FONT color="green">255</FONT> * @return true if its known, false if not.<a name="line.255"></a> |
| <FONT color="green">256</FONT> */<a name="line.256"></a> |
| <FONT color="green">257</FONT> public boolean isElementAvailable(String element)<a name="line.257"></a> |
| <FONT color="green">258</FONT> {<a name="line.258"></a> |
| <FONT color="green">259</FONT> return (m_elements.get(element) != null);<a name="line.259"></a> |
| <FONT color="green">260</FONT> }<a name="line.260"></a> |
| <FONT color="green">261</FONT> <a name="line.261"></a> |
| <FONT color="green">262</FONT> /**<a name="line.262"></a> |
| <FONT color="green">263</FONT> * Process a call to a function.<a name="line.263"></a> |
| <FONT color="green">264</FONT> *<a name="line.264"></a> |
| <FONT color="green">265</FONT> * @param funcName Function name.<a name="line.265"></a> |
| <FONT color="green">266</FONT> * @param args The arguments of the function call.<a name="line.266"></a> |
| <FONT color="green">267</FONT> * @param methodKey A key that uniquely identifies this class and method call.<a name="line.267"></a> |
| <FONT color="green">268</FONT> * @param exprContext The context in which this expression is being executed.<a name="line.268"></a> |
| <FONT color="green">269</FONT> *<a name="line.269"></a> |
| <FONT color="green">270</FONT> * @return the return value of the function evaluation.<a name="line.270"></a> |
| <FONT color="green">271</FONT> *<a name="line.271"></a> |
| <FONT color="green">272</FONT> * @throws TransformerException if parsing trouble<a name="line.272"></a> |
| <FONT color="green">273</FONT> */<a name="line.273"></a> |
| <FONT color="green">274</FONT> public Object callFunction(<a name="line.274"></a> |
| <FONT color="green">275</FONT> String funcName, Vector args, Object methodKey, ExpressionContext exprContext)<a name="line.275"></a> |
| <FONT color="green">276</FONT> throws TransformerException<a name="line.276"></a> |
| <FONT color="green">277</FONT> {<a name="line.277"></a> |
| <FONT color="green">278</FONT> <a name="line.278"></a> |
| <FONT color="green">279</FONT> Object[] argArray;<a name="line.279"></a> |
| <FONT color="green">280</FONT> <a name="line.280"></a> |
| <FONT color="green">281</FONT> try<a name="line.281"></a> |
| <FONT color="green">282</FONT> {<a name="line.282"></a> |
| <FONT color="green">283</FONT> argArray = new Object[args.size()];<a name="line.283"></a> |
| <FONT color="green">284</FONT> <a name="line.284"></a> |
| <FONT color="green">285</FONT> for (int i = 0; i < argArray.length; i++)<a name="line.285"></a> |
| <FONT color="green">286</FONT> {<a name="line.286"></a> |
| <FONT color="green">287</FONT> Object o = args.get(i);<a name="line.287"></a> |
| <FONT color="green">288</FONT> <a name="line.288"></a> |
| <FONT color="green">289</FONT> argArray[i] = (o instanceof XObject) ? ((XObject) o).object() : o;<a name="line.289"></a> |
| <FONT color="green">290</FONT> o = argArray[i];<a name="line.290"></a> |
| <FONT color="green">291</FONT> if(null != o && o instanceof DTMIterator)<a name="line.291"></a> |
| <FONT color="green">292</FONT> {<a name="line.292"></a> |
| <FONT color="green">293</FONT> argArray[i] = new DTMNodeList((DTMIterator)o);<a name="line.293"></a> |
| <FONT color="green">294</FONT> }<a name="line.294"></a> |
| <FONT color="green">295</FONT> }<a name="line.295"></a> |
| <FONT color="green">296</FONT> <a name="line.296"></a> |
| <FONT color="green">297</FONT> if (m_engineCall == null) {<a name="line.297"></a> |
| <FONT color="green">298</FONT> m_engineCall = m_engine.getClass().getMethod("call",<a name="line.298"></a> |
| <FONT color="green">299</FONT> new Class[]{ Object.class, String.class, Object[].class });<a name="line.299"></a> |
| <FONT color="green">300</FONT> }<a name="line.300"></a> |
| <FONT color="green">301</FONT> <a name="line.301"></a> |
| <FONT color="green">302</FONT> return m_engineCall.invoke(m_engine,<a name="line.302"></a> |
| <FONT color="green">303</FONT> new Object[]{ null, funcName, argArray });<a name="line.303"></a> |
| <FONT color="green">304</FONT> }<a name="line.304"></a> |
| <FONT color="green">305</FONT> catch (Exception e)<a name="line.305"></a> |
| <FONT color="green">306</FONT> {<a name="line.306"></a> |
| <FONT color="green">307</FONT> e.printStackTrace();<a name="line.307"></a> |
| <FONT color="green">308</FONT> <a name="line.308"></a> |
| <FONT color="green">309</FONT> String msg = e.getMessage();<a name="line.309"></a> |
| <FONT color="green">310</FONT> <a name="line.310"></a> |
| <FONT color="green">311</FONT> if (null != msg)<a name="line.311"></a> |
| <FONT color="green">312</FONT> {<a name="line.312"></a> |
| <FONT color="green">313</FONT> if (msg.startsWith("Stopping after fatal error:"))<a name="line.313"></a> |
| <FONT color="green">314</FONT> {<a name="line.314"></a> |
| <FONT color="green">315</FONT> msg = msg.substring("Stopping after fatal error:".length());<a name="line.315"></a> |
| <FONT color="green">316</FONT> }<a name="line.316"></a> |
| <FONT color="green">317</FONT> <a name="line.317"></a> |
| <FONT color="green">318</FONT> // System.out.println("Call to extension function failed: "+msg);<a name="line.318"></a> |
| <FONT color="green">319</FONT> throw new TransformerException(e);<a name="line.319"></a> |
| <FONT color="green">320</FONT> }<a name="line.320"></a> |
| <FONT color="green">321</FONT> else<a name="line.321"></a> |
| <FONT color="green">322</FONT> {<a name="line.322"></a> |
| <FONT color="green">323</FONT> <a name="line.323"></a> |
| <FONT color="green">324</FONT> // Should probably make a TRaX Extension Exception.<a name="line.324"></a> |
| <FONT color="green">325</FONT> throw new TransformerException(XSLMessages.createMessage(XSLTErrorResources.ER_CANNOT_CREATE_EXTENSN, new Object[]{funcName, e })); //"Could not create extension: " + funcName<a name="line.325"></a> |
| <FONT color="green">326</FONT> //+ " because of: " + e);<a name="line.326"></a> |
| <FONT color="green">327</FONT> }<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> /**<a name="line.331"></a> |
| <FONT color="green">332</FONT> * Process a call to an XPath extension function<a name="line.332"></a> |
| <FONT color="green">333</FONT> *<a name="line.333"></a> |
| <FONT color="green">334</FONT> * @param extFunction The XPath extension function<a name="line.334"></a> |
| <FONT color="green">335</FONT> * @param args The arguments of the function call.<a name="line.335"></a> |
| <FONT color="green">336</FONT> * @param exprContext The context in which this expression is being executed.<a name="line.336"></a> |
| <FONT color="green">337</FONT> * @return the return value of the function evaluation.<a name="line.337"></a> |
| <FONT color="green">338</FONT> * @throws TransformerException<a name="line.338"></a> |
| <FONT color="green">339</FONT> */<a name="line.339"></a> |
| <FONT color="green">340</FONT> public Object callFunction(FuncExtFunction extFunction,<a name="line.340"></a> |
| <FONT color="green">341</FONT> Vector args,<a name="line.341"></a> |
| <FONT color="green">342</FONT> ExpressionContext exprContext)<a name="line.342"></a> |
| <FONT color="green">343</FONT> throws TransformerException<a name="line.343"></a> |
| <FONT color="green">344</FONT> {<a name="line.344"></a> |
| <FONT color="green">345</FONT> return callFunction(extFunction.getFunctionName(), args, <a name="line.345"></a> |
| <FONT color="green">346</FONT> extFunction.getMethodKey(), exprContext);<a name="line.346"></a> |
| <FONT color="green">347</FONT> }<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> * Process a call to this extension namespace via an element. As a side<a name="line.350"></a> |
| <FONT color="green">351</FONT> * effect, the results are sent to the TransformerImpl's result tree.<a name="line.351"></a> |
| <FONT color="green">352</FONT> *<a name="line.352"></a> |
| <FONT color="green">353</FONT> * @param localPart Element name's local part.<a name="line.353"></a> |
| <FONT color="green">354</FONT> * @param element The extension element being processed.<a name="line.354"></a> |
| <FONT color="green">355</FONT> * @param transformer Handle to TransformerImpl.<a name="line.355"></a> |
| <FONT color="green">356</FONT> * @param stylesheetTree The compiled stylesheet tree.<a name="line.356"></a> |
| <FONT color="green">357</FONT> * @param methodKey A key that uniquely identifies this class and method call.<a name="line.357"></a> |
| <FONT color="green">358</FONT> *<a name="line.358"></a> |
| <FONT color="green">359</FONT> * @throws XSLProcessorException thrown if something goes wrong<a name="line.359"></a> |
| <FONT color="green">360</FONT> * while running the extension handler.<a name="line.360"></a> |
| <FONT color="green">361</FONT> * @throws MalformedURLException if loading trouble<a name="line.361"></a> |
| <FONT color="green">362</FONT> * @throws FileNotFoundException if loading trouble<a name="line.362"></a> |
| <FONT color="green">363</FONT> * @throws IOException if loading trouble<a name="line.363"></a> |
| <FONT color="green">364</FONT> * @throws TransformerException if parsing trouble<a name="line.364"></a> |
| <FONT color="green">365</FONT> */<a name="line.365"></a> |
| <FONT color="green">366</FONT> public void processElement(<a name="line.366"></a> |
| <FONT color="green">367</FONT> String localPart, ElemTemplateElement element, TransformerImpl transformer, <a name="line.367"></a> |
| <FONT color="green">368</FONT> Stylesheet stylesheetTree, Object methodKey)<a name="line.368"></a> |
| <FONT color="green">369</FONT> throws TransformerException, IOException<a name="line.369"></a> |
| <FONT color="green">370</FONT> {<a name="line.370"></a> |
| <FONT color="green">371</FONT> <a name="line.371"></a> |
| <FONT color="green">372</FONT> Object result = null;<a name="line.372"></a> |
| <FONT color="green">373</FONT> XSLProcessorContext xpc = new XSLProcessorContext(transformer, stylesheetTree);<a name="line.373"></a> |
| <FONT color="green">374</FONT> <a name="line.374"></a> |
| <FONT color="green">375</FONT> try<a name="line.375"></a> |
| <FONT color="green">376</FONT> {<a name="line.376"></a> |
| <FONT color="green">377</FONT> Vector argv = new Vector(2);<a name="line.377"></a> |
| <FONT color="green">378</FONT> <a name="line.378"></a> |
| <FONT color="green">379</FONT> argv.add(xpc);<a name="line.379"></a> |
| <FONT color="green">380</FONT> argv.add(element);<a name="line.380"></a> |
| <FONT color="green">381</FONT> <a name="line.381"></a> |
| <FONT color="green">382</FONT> result = callFunction(localPart, argv, methodKey,<a name="line.382"></a> |
| <FONT color="green">383</FONT> transformer.getXPathContext().getExpressionContext());<a name="line.383"></a> |
| <FONT color="green">384</FONT> }<a name="line.384"></a> |
| <FONT color="green">385</FONT> catch (XPathProcessorException e)<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> // e.printStackTrace ();<a name="line.388"></a> |
| <FONT color="green">389</FONT> throw new TransformerException(e.getMessage(), e);<a name="line.389"></a> |
| <FONT color="green">390</FONT> }<a name="line.390"></a> |
| <FONT color="green">391</FONT> <a name="line.391"></a> |
| <FONT color="green">392</FONT> if (result != null)<a name="line.392"></a> |
| <FONT color="green">393</FONT> {<a name="line.393"></a> |
| <FONT color="green">394</FONT> xpc.outputToResultTree(stylesheetTree, result);<a name="line.394"></a> |
| <FONT color="green">395</FONT> }<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> |
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| </PRE> |
| </BODY> |
| </HTML> |
