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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: ExtensionNamespaceSupport.java 468637 2006-10-28 06:51:02Z 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.lang.reflect.Constructor;<a name="line.23"></a>
<FONT color="green">024</FONT>    <a name="line.24"></a>
<FONT color="green">025</FONT>    import javax.xml.transform.TransformerException;<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>     * During styleseet composition, an ExtensionNamespaceSupport object is created for each extension <a name="line.28"></a>
<FONT color="green">029</FONT>     * namespace the stylesheet uses. At the beginning of a transformation, TransformerImpl generates<a name="line.29"></a>
<FONT color="green">030</FONT>     * an ExtensionHandler for each of these objects and adds an entry to the ExtensionsTable hashtable.<a name="line.30"></a>
<FONT color="green">031</FONT>     */<a name="line.31"></a>
<FONT color="green">032</FONT>    public class ExtensionNamespaceSupport<a name="line.32"></a>
<FONT color="green">033</FONT>    {<a name="line.33"></a>
<FONT color="green">034</FONT>      // Namespace, ExtensionHandler class name, constructor signature <a name="line.34"></a>
<FONT color="green">035</FONT>      // and arguments.<a name="line.35"></a>
<FONT color="green">036</FONT>      String m_namespace = null;<a name="line.36"></a>
<FONT color="green">037</FONT>      String m_handlerClass = null;<a name="line.37"></a>
<FONT color="green">038</FONT>      Class [] m_sig = null;  <a name="line.38"></a>
<FONT color="green">039</FONT>      Object [] m_args = null;<a name="line.39"></a>
<FONT color="green">040</FONT>     <a name="line.40"></a>
<FONT color="green">041</FONT>      public ExtensionNamespaceSupport(String namespace, <a name="line.41"></a>
<FONT color="green">042</FONT>                                       String handlerClass, <a name="line.42"></a>
<FONT color="green">043</FONT>                                       Object[] constructorArgs)<a name="line.43"></a>
<FONT color="green">044</FONT>      {<a name="line.44"></a>
<FONT color="green">045</FONT>        m_namespace = namespace;<a name="line.45"></a>
<FONT color="green">046</FONT>        m_handlerClass = handlerClass;<a name="line.46"></a>
<FONT color="green">047</FONT>        m_args = constructorArgs;<a name="line.47"></a>
<FONT color="green">048</FONT>        // Create the constructor signature.<a name="line.48"></a>
<FONT color="green">049</FONT>        m_sig = new Class[m_args.length];<a name="line.49"></a>
<FONT color="green">050</FONT>        for (int i = 0; i &lt; m_args.length; i++)<a name="line.50"></a>
<FONT color="green">051</FONT>        {<a name="line.51"></a>
<FONT color="green">052</FONT>          if (m_args[i] != null)<a name="line.52"></a>
<FONT color="green">053</FONT>            m_sig[i] = m_args[i].getClass();//System.out.println("arg class " + i + " " +m_sig[i]);<a name="line.53"></a>
<FONT color="green">054</FONT>          else // If an arguments is null, pick the constructor later.<a name="line.54"></a>
<FONT color="green">055</FONT>          {<a name="line.55"></a>
<FONT color="green">056</FONT>            m_sig = null;<a name="line.56"></a>
<FONT color="green">057</FONT>            break;<a name="line.57"></a>
<FONT color="green">058</FONT>          }<a name="line.58"></a>
<FONT color="green">059</FONT>        }<a name="line.59"></a>
<FONT color="green">060</FONT>      }<a name="line.60"></a>
<FONT color="green">061</FONT>      <a name="line.61"></a>
<FONT color="green">062</FONT>      public String getNamespace()<a name="line.62"></a>
<FONT color="green">063</FONT>      {<a name="line.63"></a>
<FONT color="green">064</FONT>        return m_namespace;<a name="line.64"></a>
<FONT color="green">065</FONT>      }<a name="line.65"></a>
<FONT color="green">066</FONT>      <a name="line.66"></a>
<FONT color="green">067</FONT>      /**<a name="line.67"></a>
<FONT color="green">068</FONT>       * Launch the ExtensionHandler that this ExtensionNamespaceSupport object defines.<a name="line.68"></a>
<FONT color="green">069</FONT>       */<a name="line.69"></a>
<FONT color="green">070</FONT>      public ExtensionHandler launch()<a name="line.70"></a>
<FONT color="green">071</FONT>        throws TransformerException<a name="line.71"></a>
<FONT color="green">072</FONT>      {<a name="line.72"></a>
<FONT color="green">073</FONT>        ExtensionHandler handler = null;<a name="line.73"></a>
<FONT color="green">074</FONT>        try<a name="line.74"></a>
<FONT color="green">075</FONT>        {<a name="line.75"></a>
<FONT color="green">076</FONT>          Class cl = ExtensionHandler.getClassForName(m_handlerClass);<a name="line.76"></a>
<FONT color="green">077</FONT>          Constructor con = null;<a name="line.77"></a>
<FONT color="green">078</FONT>          //System.out.println("class " + cl + " " + m_args + " " + m_args.length + " " + m_sig);<a name="line.78"></a>
<FONT color="green">079</FONT>          if (m_sig != null)<a name="line.79"></a>
<FONT color="green">080</FONT>            con = cl.getConstructor(m_sig);<a name="line.80"></a>
<FONT color="green">081</FONT>          else // Pick the constructor based on number of args.<a name="line.81"></a>
<FONT color="green">082</FONT>          {<a name="line.82"></a>
<FONT color="green">083</FONT>            Constructor[] cons = cl.getConstructors();<a name="line.83"></a>
<FONT color="green">084</FONT>            for (int i = 0; i &lt; cons.length; i ++)<a name="line.84"></a>
<FONT color="green">085</FONT>            {<a name="line.85"></a>
<FONT color="green">086</FONT>              if (cons[i].getParameterTypes().length == m_args.length)<a name="line.86"></a>
<FONT color="green">087</FONT>              {<a name="line.87"></a>
<FONT color="green">088</FONT>                con = cons[i];<a name="line.88"></a>
<FONT color="green">089</FONT>                break;<a name="line.89"></a>
<FONT color="green">090</FONT>              }<a name="line.90"></a>
<FONT color="green">091</FONT>            }<a name="line.91"></a>
<FONT color="green">092</FONT>          }<a name="line.92"></a>
<FONT color="green">093</FONT>          // System.out.println("constructor " + con);<a name="line.93"></a>
<FONT color="green">094</FONT>          if (con != null)<a name="line.94"></a>
<FONT color="green">095</FONT>            handler = (ExtensionHandler)con.newInstance(m_args);<a name="line.95"></a>
<FONT color="green">096</FONT>          else<a name="line.96"></a>
<FONT color="green">097</FONT>            throw new TransformerException("ExtensionHandler constructor not found");<a name="line.97"></a>
<FONT color="green">098</FONT>        }<a name="line.98"></a>
<FONT color="green">099</FONT>        catch (Exception e)<a name="line.99"></a>
<FONT color="green">100</FONT>        {<a name="line.100"></a>
<FONT color="green">101</FONT>          throw new TransformerException(e);<a name="line.101"></a>
<FONT color="green">102</FONT>        }<a name="line.102"></a>
<FONT color="green">103</FONT>        return handler;<a name="line.103"></a>
<FONT color="green">104</FONT>      }<a name="line.104"></a>
<FONT color="green">105</FONT>    <a name="line.105"></a>
<FONT color="green">106</FONT>    }<a name="line.106"></a>


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