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Re: Working RDF query client using Apache Axis

From: Libby Miller <Libby.Miller@bristol.ac.uk>
Date: Mon, 3 Sep 2001 11:58:53 +0100 (BST)
To: Dan Brickley <danbri@w3.org>
cc: www-archive <www-archive@w3.org>, Glen Daniels <gdaniels@macromedia.com>, "libby.miller" <libby.miller@bristol.ac.uk>
Message-ID: <Pine.GSO.4.21.0109031158470.3667-100000@mail.ilrt.bris.ac.uk>

very cool :)

On Mon, 3 Sep 2001, Dan Brickley wrote:

> 
> Seems to work. The 3rd argument to the server specifies the serialization
> policy (ie. whether to use the Map construct); this may turn out to be an
> interop headache, dunno.
> 
> Dan
> 
> 
> ps. still some bits in code below I could strip out; it's a recycled Axis test
> ---------- Forwarded message ----------
> Date: Mon, 3 Sep 2001 11:06:12 +0100
> 
> /* stolen from apache Axis examples by Doug and Glen */
> // http://lists.w3.org/Archives/Public/www-archive/2001Jul/0020.html
> // for perl equiv i'm trying to clone
> 
> package org.w3c.inkling.soap;
> 
> import java.net.*;
> import java.io.*;
> import java.util.*;
> 
> import org.apache.axis.*;
> import org.apache.axis.utils.*;
> import org.apache.axis.client.*;
> import org.apache.axis.transport.http.HTTPTransport ;
> import java.lang.reflect.Array;
> import org.apache.axis.message.*;
> import org.apache.axis.encoding.*;
> import org.apache.axis.server.AxisServer;
> import org.apache.axis.utils.QName;
> import org.xml.sax.InputSource;
> 
> 
> public class RDFQClient {
> 
>     public static String query =  "SELECT ?x, ?l, ?c" +
> 	"FROM     http://xmlns.com/wordnet/1.6/Job "+
> 	"WHERE "+
> 	"  (web::type ?x rdfs::Class) "+
> 	"  (rdfs::label ?x ?l) "+
> 	"  (rdfs::description ?x ?c) "+
> 	"USING web FOR http://www.w3.org/1999/02/22-rdf-syntax-ns# "+
>        	"rdfs FOR http://www.w3.org/2000/01/rdf-schema#";
> 
>    public static String data = "http://xmlns.com/wordnet/1.6/Job";
> 
>    public static String msg = "<SOAP-ENV:Envelope " +
>         "xmlns:SOAP-ENV=\"http://schemas.xmlsoap.org/soap/envelope/\" " +
>         "xmlns:soapenc=\"http://schemas.xmlsoap.org/soap/encoding/\" > " +
>         "<SOAP-ENV:Body>\n" +
>         "<rq:squish xmlns:rq=\"http://rdfweb.org/RDF/RDFWeb/SOAPDemo\">\n" +
>         "<rq:query>" + query + "</rq:query>"+
> 	"<rq:data>"+ data +"</rq:data>"+
>         "<rq:hashmap>1</rq:hashmap>" +
>         "</rq:squish>\n" +
>         "</SOAP-ENV:Body></SOAP-ENV:Envelope>\n";
> 
>     /**
>      * Send a hardcoded message to the server, and print the response.
>      */
>     public static String doTest (String args[], String service) throws Exception {
>       Options      opts    = new Options( args );
>       String       url     = opts.getURL();
>       String       action  = "EchoService" ;
> 
>         if (service != null) {
>             action = service;
>         }
> 
>       Debug.setDebugLevel( opts.isFlagSet( 'd' ) );
> 
>       args = opts.getRemainingArgs();
>       if ( args != null ) action = args[0];
> 
>       ServiceClient client = new ServiceClient(new HTTPTransport());
> 
>       url = "http://fireball.dyndns.org/cgi-bin/soap"; // danbri hack
>       action = "http://rdfweb.org/RDF/RDFWeb/SOAPDemo#squish";
> 
>       client.set(HTTPTransport.URL, url);
>       client.set(HTTPTransport.ACTION, action);
> 
>       Message        reqMsg      = new Message( msg );
>       Message        resMsg     = null ;
> 
>       System.out.println( "Request:\n" + msg );
>       System.out.println( "Url: " + url );
>       System.out.println( "soap action is: " + action );
>       client.setRequestMessage( reqMsg );
>       client.invoke();
> 
>       resMsg = client.getMessageContext().getResponseMessage();
> 
>       // System.out.println("XML serialization: "+ resMsg.getAsString());
> 
>       SOAPEnvelope envelope = (SOAPEnvelope)resMsg.getAsSOAPEnvelope();
> 
>       RPCElement body = (RPCElement)envelope.getFirstBody();
>       Vector arglist = body.getParams();
>       RPCParam param = (RPCParam) arglist.get(0);
> 
>       System.out.println("Restoring object from xml...");
>       Object result = param.getValue();
> 
>       ArrayList rows = (ArrayList)result;
>       System.out.println("\n\nGot rows: "+ rows +"\n\n");
> 
>       System.out.println("result = " +result ) ;
>       Object[] answers = (Object[])rows.toArray();
>       for (int i=0; i<answers.length; i++) {
> 	  HashMap h = (HashMap)answers[i];
> 	  System.out.println("Answer "+i+" = "+ h +"\n\n");
>       }
>       return (String)resMsg.getAsString();
>     }
> 
>   public static void main(String args[]) throws Exception{
>     doTest(args, null);
>   }
>   public static void mainWithService(String args[], String service) throws Exception{
>     doTest(args, service);
>   }
> }
> 
> 
Received on Monday, 3 September 2001 07:00:23 GMT

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