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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: FuncConcat.java 468655 2006-10-28 07:12:06Z minchau $<a name="line.19"></a>
<FONT color="green">020</FONT>     */<a name="line.20"></a>
<FONT color="green">021</FONT>    package org.apache.xpath.functions;<a name="line.21"></a>
<FONT color="green">022</FONT>    <a name="line.22"></a>
<FONT color="green">023</FONT>    import org.apache.xalan.res.XSLMessages;<a name="line.23"></a>
<FONT color="green">024</FONT>    import org.apache.xpath.XPathContext;<a name="line.24"></a>
<FONT color="green">025</FONT>    import org.apache.xpath.objects.XObject;<a name="line.25"></a>
<FONT color="green">026</FONT>    import org.apache.xpath.objects.XString;<a name="line.26"></a>
<FONT color="green">027</FONT>    <a name="line.27"></a>
<FONT color="green">028</FONT>    /**<a name="line.28"></a>
<FONT color="green">029</FONT>     * Execute the Concat() function.<a name="line.29"></a>
<FONT color="green">030</FONT>     * @xsl.usage advanced<a name="line.30"></a>
<FONT color="green">031</FONT>     */<a name="line.31"></a>
<FONT color="green">032</FONT>    public class FuncConcat extends FunctionMultiArgs<a name="line.32"></a>
<FONT color="green">033</FONT>    {<a name="line.33"></a>
<FONT color="green">034</FONT>        static final long serialVersionUID = 1737228885202314413L;<a name="line.34"></a>
<FONT color="green">035</FONT>    <a name="line.35"></a>
<FONT color="green">036</FONT>      /**<a name="line.36"></a>
<FONT color="green">037</FONT>       * Execute the function.  The function must return<a name="line.37"></a>
<FONT color="green">038</FONT>       * a valid object.<a name="line.38"></a>
<FONT color="green">039</FONT>       * @param xctxt The current execution context.<a name="line.39"></a>
<FONT color="green">040</FONT>       * @return A valid XObject.<a name="line.40"></a>
<FONT color="green">041</FONT>       *<a name="line.41"></a>
<FONT color="green">042</FONT>       * @throws javax.xml.transform.TransformerException<a name="line.42"></a>
<FONT color="green">043</FONT>       */<a name="line.43"></a>
<FONT color="green">044</FONT>      public XObject execute(XPathContext xctxt) throws javax.xml.transform.TransformerException<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>        StringBuffer sb = new StringBuffer();<a name="line.47"></a>
<FONT color="green">048</FONT>    <a name="line.48"></a>
<FONT color="green">049</FONT>        // Compiler says we must have at least two arguments.<a name="line.49"></a>
<FONT color="green">050</FONT>        sb.append(m_arg0.execute(xctxt).str());<a name="line.50"></a>
<FONT color="green">051</FONT>        sb.append(m_arg1.execute(xctxt).str());<a name="line.51"></a>
<FONT color="green">052</FONT>    <a name="line.52"></a>
<FONT color="green">053</FONT>        if (null != m_arg2)<a name="line.53"></a>
<FONT color="green">054</FONT>          sb.append(m_arg2.execute(xctxt).str());<a name="line.54"></a>
<FONT color="green">055</FONT>    <a name="line.55"></a>
<FONT color="green">056</FONT>        if (null != m_args)<a name="line.56"></a>
<FONT color="green">057</FONT>        {<a name="line.57"></a>
<FONT color="green">058</FONT>          for (int i = 0; i &lt; m_args.length; i++)<a name="line.58"></a>
<FONT color="green">059</FONT>          {<a name="line.59"></a>
<FONT color="green">060</FONT>            sb.append(m_args[i].execute(xctxt).str());<a name="line.60"></a>
<FONT color="green">061</FONT>          }<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>        return new XString(sb.toString());<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>       * Check that the number of arguments passed to this function is correct.<a name="line.68"></a>
<FONT color="green">069</FONT>       *<a name="line.69"></a>
<FONT color="green">070</FONT>       *<a name="line.70"></a>
<FONT color="green">071</FONT>       * @param argNum The number of arguments that is being passed to the function.<a name="line.71"></a>
<FONT color="green">072</FONT>       *<a name="line.72"></a>
<FONT color="green">073</FONT>       * @throws WrongNumberArgsException<a name="line.73"></a>
<FONT color="green">074</FONT>       */<a name="line.74"></a>
<FONT color="green">075</FONT>      public void checkNumberArgs(int argNum) throws WrongNumberArgsException<a name="line.75"></a>
<FONT color="green">076</FONT>      {<a name="line.76"></a>
<FONT color="green">077</FONT>        if (argNum &lt; 2)<a name="line.77"></a>
<FONT color="green">078</FONT>          reportWrongNumberArgs();<a name="line.78"></a>
<FONT color="green">079</FONT>      }<a name="line.79"></a>
<FONT color="green">080</FONT>    <a name="line.80"></a>
<FONT color="green">081</FONT>      /**<a name="line.81"></a>
<FONT color="green">082</FONT>       * Constructs and throws a WrongNumberArgException with the appropriate<a name="line.82"></a>
<FONT color="green">083</FONT>       * message for this function object.<a name="line.83"></a>
<FONT color="green">084</FONT>       *<a name="line.84"></a>
<FONT color="green">085</FONT>       * @throws WrongNumberArgsException<a name="line.85"></a>
<FONT color="green">086</FONT>       */<a name="line.86"></a>
<FONT color="green">087</FONT>      protected void reportWrongNumberArgs() throws WrongNumberArgsException {<a name="line.87"></a>
<FONT color="green">088</FONT>          throw new WrongNumberArgsException(XSLMessages.createXPATHMessage("gtone", null));<a name="line.88"></a>
<FONT color="green">089</FONT>      }<a name="line.89"></a>
<FONT color="green">090</FONT>    }<a name="line.90"></a>


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