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        Last Published: 2010-02-06
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        <p>Apache XML-RPC supports XML-RPC introspection, as specified by <a href="http://scripts.incutio.com/xmlrpc/introspection.html" class="externalLink"> http://scripts.incutio.com/xmlrpc/introspection.html</a>. This page describes how to configure the XML-RPC server for introspection.</p>
<div class="section"><h2>What is introspection?</h2>
<p>Introspection is the servers ability to provide metadata to the client. The client may ask &quot;What method names does the server offer?&quot;, &quot;How do I invoke method 'foo'?&quot;, or &quot;Can you give me help on method 'foo'?&quot;.</p>
<p>The client does so by invoking the special methods &quot;system.listMethods&quot;, &quot;system.methodSignature&quot; and &quot;system.methodHelp&quot;. These are described in detail in the non-official specification for XML-RPC introspection, which you'll find at <a href="http://scripts.incutio.com/xmlrpc/introspection.html" class="externalLink"> http://scripts.incutio.com/xmlrpc/introspection.html</a>.</p>
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<div class="section"><h2>How do I configure the server for introspection?</h2>
<p>The server requires a special mapping. Basically, you simply add a &quot;system&quot; handler, which is implemented by the class <tt>XmlRpcSystemImpl</tt>. Here's how you would do that in the <tt>XmlRpcServlet</tt>:</p>
<div class="source"><pre>    public class MyXmlRpcServlet extends XmlRpcServlet {
                protected XmlRpcHandlerMapping newXmlRpcHandlerMapping()
                        throws XmlRpcException {
                        PropertyHandlerMapping mapping =
                            (PropertyHandlerMapping) newXmlRpcHandlerMapping();
                        XmlRpcSystemImpl.addSystemHandler(mapping);
                }
    }
</pre>
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<p>Quite similar, you would override a protected method, if you prefer using the <tt>WebServer</tt> class:</p>
<div class="source"><pre>    public class MyWebServer extends WebServer {
        public MyWebServer(int pPort) {
            super(pPort);
        }

                protected XmlRpcStreamServer newXmlRpcStreamServer(){
                        XmlRpcStreamServer xmlRpcStreamServer = new ConnectionServer();
                        PropertyHandlerMapping mapping = (PropertyHandlerMapping) xmlRpcStreamServer.getHandlerMapping();
                        XmlRpcSystemImpl.addSystemHandler(mapping);
                        return xmlRpcStreamServer;
                }
    }
</pre>
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author	Yu Taninari <you@cr.ie.u-ryukyu.ac.jp>
date	Tue, 22 Nov 2011 13:58:58 +0900
parents	db5f735fd2b4
children