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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> package org.apache.xalan.extensions;<a name="line.19"></a> |
| <FONT color="green">020</FONT> <a name="line.20"></a> |
| <FONT color="green">021</FONT> import javax.xml.namespace.QName;<a name="line.21"></a> |
| <FONT color="green">022</FONT> import javax.xml.xpath.XPathFunction;<a name="line.22"></a> |
| <FONT color="green">023</FONT> import javax.xml.xpath.XPathFunctionResolver;<a name="line.23"></a> |
| <FONT color="green">024</FONT> import org.apache.xalan.res.XSLMessages;<a name="line.24"></a> |
| <FONT color="green">025</FONT> import org.apache.xalan.res.XSLTErrorResources;<a name="line.25"></a> |
| <FONT color="green">026</FONT> <a name="line.26"></a> |
| <FONT color="green">027</FONT> /**<a name="line.27"></a> |
| <FONT color="green">028</FONT> * A sample implementation of XPathFunctionResolver, with support for<a name="line.28"></a> |
| <FONT color="green">029</FONT> * EXSLT extension functions and Java extension functions.<a name="line.29"></a> |
| <FONT color="green">030</FONT> */<a name="line.30"></a> |
| <FONT color="green">031</FONT> public class XPathFunctionResolverImpl implements XPathFunctionResolver<a name="line.31"></a> |
| <FONT color="green">032</FONT> {<a name="line.32"></a> |
| <FONT color="green">033</FONT> /**<a name="line.33"></a> |
| <FONT color="green">034</FONT> * Resolve an extension function from the qualified name and arity.<a name="line.34"></a> |
| <FONT color="green">035</FONT> */<a name="line.35"></a> |
| <FONT color="green">036</FONT> public XPathFunction resolveFunction(QName qname, int arity)<a name="line.36"></a> |
| <FONT color="green">037</FONT> {<a name="line.37"></a> |
| <FONT color="green">038</FONT> if (qname == null)<a name="line.38"></a> |
| <FONT color="green">039</FONT> throw new NullPointerException(<a name="line.39"></a> |
| <FONT color="green">040</FONT> XSLMessages.createMessage(<a name="line.40"></a> |
| <FONT color="green">041</FONT> XSLTErrorResources.ER_XPATH_RESOLVER_NULL_QNAME, null));<a name="line.41"></a> |
| <FONT color="green">042</FONT> <a name="line.42"></a> |
| <FONT color="green">043</FONT> if (arity < 0)<a name="line.43"></a> |
| <FONT color="green">044</FONT> throw new IllegalArgumentException(<a name="line.44"></a> |
| <FONT color="green">045</FONT> XSLMessages.createMessage(<a name="line.45"></a> |
| <FONT color="green">046</FONT> XSLTErrorResources.ER_XPATH_RESOLVER_NEGATIVE_ARITY, null));<a name="line.46"></a> |
| <FONT color="green">047</FONT> <a name="line.47"></a> |
| <FONT color="green">048</FONT> String uri = qname.getNamespaceURI();<a name="line.48"></a> |
| <FONT color="green">049</FONT> if (uri == null || uri.length() == 0)<a name="line.49"></a> |
| <FONT color="green">050</FONT> return null;<a name="line.50"></a> |
| <FONT color="green">051</FONT> <a name="line.51"></a> |
| <FONT color="green">052</FONT> String className = null;<a name="line.52"></a> |
| <FONT color="green">053</FONT> String methodName = null;<a name="line.53"></a> |
| <FONT color="green">054</FONT> if (uri.startsWith("http://exslt.org"))<a name="line.54"></a> |
| <FONT color="green">055</FONT> {<a name="line.55"></a> |
| <FONT color="green">056</FONT> className = getEXSLTClassName(uri);<a name="line.56"></a> |
| <FONT color="green">057</FONT> methodName = qname.getLocalPart();<a name="line.57"></a> |
| <FONT color="green">058</FONT> }<a name="line.58"></a> |
| <FONT color="green">059</FONT> else if (!uri.equals(ExtensionNamespaceContext.JAVA_EXT_URI))<a name="line.59"></a> |
| <FONT color="green">060</FONT> {<a name="line.60"></a> |
| <FONT color="green">061</FONT> int lastSlash = className.lastIndexOf('/');<a name="line.61"></a> |
| <FONT color="green">062</FONT> if (-1 != lastSlash)<a name="line.62"></a> |
| <FONT color="green">063</FONT> className = className.substring(lastSlash + 1);<a name="line.63"></a> |
| <FONT color="green">064</FONT> } <a name="line.64"></a> |
| <FONT color="green">065</FONT> <a name="line.65"></a> |
| <FONT color="green">066</FONT> String localPart = qname.getLocalPart();<a name="line.66"></a> |
| <FONT color="green">067</FONT> int lastDotIndex = localPart.lastIndexOf('.');<a name="line.67"></a> |
| <FONT color="green">068</FONT> if (lastDotIndex > 0)<a name="line.68"></a> |
| <FONT color="green">069</FONT> {<a name="line.69"></a> |
| <FONT color="green">070</FONT> if (className != null)<a name="line.70"></a> |
| <FONT color="green">071</FONT> className = className + "." + localPart.substring(0, lastDotIndex);<a name="line.71"></a> |
| <FONT color="green">072</FONT> else<a name="line.72"></a> |
| <FONT color="green">073</FONT> className = localPart.substring(0, lastDotIndex);<a name="line.73"></a> |
| <FONT color="green">074</FONT> <a name="line.74"></a> |
| <FONT color="green">075</FONT> methodName = localPart.substring(lastDotIndex + 1);<a name="line.75"></a> |
| <FONT color="green">076</FONT> }<a name="line.76"></a> |
| <FONT color="green">077</FONT> else<a name="line.77"></a> |
| <FONT color="green">078</FONT> methodName = localPart;<a name="line.78"></a> |
| <FONT color="green">079</FONT> <a name="line.79"></a> |
| <FONT color="green">080</FONT> if(null == className || className.trim().length() == 0 <a name="line.80"></a> |
| <FONT color="green">081</FONT> || null == methodName || methodName.trim().length() == 0) <a name="line.81"></a> |
| <FONT color="green">082</FONT> return null;<a name="line.82"></a> |
| <FONT color="green">083</FONT> <a name="line.83"></a> |
| <FONT color="green">084</FONT> ExtensionHandler handler = null;<a name="line.84"></a> |
| <FONT color="green">085</FONT> try<a name="line.85"></a> |
| <FONT color="green">086</FONT> {<a name="line.86"></a> |
| <FONT color="green">087</FONT> ExtensionHandler.getClassForName(className);<a name="line.87"></a> |
| <FONT color="green">088</FONT> handler = new ExtensionHandlerJavaClass(uri, "javaclass", className);<a name="line.88"></a> |
| <FONT color="green">089</FONT> }<a name="line.89"></a> |
| <FONT color="green">090</FONT> catch (ClassNotFoundException e)<a name="line.90"></a> |
| <FONT color="green">091</FONT> {<a name="line.91"></a> |
| <FONT color="green">092</FONT> return null;<a name="line.92"></a> |
| <FONT color="green">093</FONT> }<a name="line.93"></a> |
| <FONT color="green">094</FONT> return new XPathFunctionImpl(handler, methodName);<a name="line.94"></a> |
| <FONT color="green">095</FONT> }<a name="line.95"></a> |
| <FONT color="green">096</FONT> <a name="line.96"></a> |
| <FONT color="green">097</FONT> /**<a name="line.97"></a> |
| <FONT color="green">098</FONT> * Return the implementation class name of an EXSLT extension from<a name="line.98"></a> |
| <FONT color="green">099</FONT> * a given namespace uri. The uri must starts with "http://exslt.org".<a name="line.99"></a> |
| <FONT color="green">100</FONT> */<a name="line.100"></a> |
| <FONT color="green">101</FONT> private String getEXSLTClassName(String uri)<a name="line.101"></a> |
| <FONT color="green">102</FONT> {<a name="line.102"></a> |
| <FONT color="green">103</FONT> if (uri.equals(ExtensionNamespaceContext.EXSLT_MATH_URI))<a name="line.103"></a> |
| <FONT color="green">104</FONT> return "org.apache.xalan.lib.ExsltMath";<a name="line.104"></a> |
| <FONT color="green">105</FONT> else if (uri.equals(ExtensionNamespaceContext.EXSLT_SET_URI))<a name="line.105"></a> |
| <FONT color="green">106</FONT> return "org.apache.xalan.lib.ExsltSets";<a name="line.106"></a> |
| <FONT color="green">107</FONT> else if (uri.equals(ExtensionNamespaceContext.EXSLT_STRING_URI))<a name="line.107"></a> |
| <FONT color="green">108</FONT> return "org.apache.xalan.lib.ExsltStrings";<a name="line.108"></a> |
| <FONT color="green">109</FONT> else if (uri.equals(ExtensionNamespaceContext.EXSLT_DATETIME_URI))<a name="line.109"></a> |
| <FONT color="green">110</FONT> return "org.apache.xalan.lib.ExsltDatetime";<a name="line.110"></a> |
| <FONT color="green">111</FONT> else if (uri.equals(ExtensionNamespaceContext.EXSLT_DYNAMIC_URI))<a name="line.111"></a> |
| <FONT color="green">112</FONT> return "org.apache.xalan.lib.ExsltDynamic";<a name="line.112"></a> |
| <FONT color="green">113</FONT> else if (uri.equals(ExtensionNamespaceContext.EXSLT_URI))<a name="line.113"></a> |
| <FONT color="green">114</FONT> return "org.apache.xalan.lib.ExsltCommon";<a name="line.114"></a> |
| <FONT color="green">115</FONT> else<a name="line.115"></a> |
| <FONT color="green">116</FONT> return null;<a name="line.116"></a> |
| <FONT color="green">117</FONT> }<a name="line.117"></a> |
| <FONT color="green">118</FONT> }<a name="line.118"></a> |
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| </PRE> |
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