RE: how one would do to.... the return

[TURNOCK, James, FM]

This is not production quality code and hasn't been tested, but gives the
basis of how to achieve your intended results... any problems, get back to
me James


package com.rbsfm.commonx.xmlrpc.apache;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.OutputStream;
import java.io.Serializable;
import java.util.Vector;

import org.apache.xmlrpc.Base64;
import org.apache.xmlrpc.XmlRpcClient;

/**
 * @author [EMAIL PROTECTED]
 */
public class Solution {
    
    public static void main(String[]argv) throws Exception{
        Serializable toPass = null; //it must be serializable
        XmlRpcClient client = new XmlRpcClient("blah");
        Vector parameters = new Vector();
        parameters.add(Base64.encode(serializeObject(toPass)));
        Object retVal = client.execute("myMethod", parameters);
        //..
        
        //for deserialisation once you have the byte array
        //byte[] myParameter = null;
        //Object myDeserializedObject =
readObject(Base64.decode(myParameter));
    }
    public static Object readObject(byte[] bytes) throws IOException,
ClassNotFoundException{
        Object retVal = null;
        ByteArrayInputStream bais = new ByteArrayInputStream(bytes);
        ObjectInputStream ois = null;
        try{
            ois = new ObjectInputStream(bais);
            retVal = ois.readObject();   
        }finally{
            close(bais);
            close(ois);
        }
        return retVal;
    }
    public static byte[] serializeObject(Serializable o) throws IOException{
        byte[] retVal = null;
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        ObjectOutputStream oos = null;
        try{
            oos = new ObjectOutputStream(baos);
            oos.writeObject(o);
            oos.flush();
            retVal = baos.toByteArray();
        }finally{
            close(oos);
            close(baos);    
        }
        return retVal;
    }
    private static void close(OutputStream os){
        if(os != null){
            try{
                os.close();
            }catch(IOException ioex){
                ioex.printStackTrace();   
            }   
        }  
    }
    private static void close(InputStream os){
        if(os != null){
            try{
                os.close();
            }catch(IOException ioex){
                ioex.printStackTrace();   
            }   
        }  
    }
    
}

-----Original Message-----
From: stephane parenton [mailto:[EMAIL PROTECTED]
Sent: 30 July 2003 16:21
To: [EMAIL PROTECTED]
Subject: Re: how one would do to.... the return


John Wilson a �crit:

>It's reasonably easy to do. You can pass Java classes as <base64> elements
>in an XML-RPC message.
>  
>
hi again.... i'm not reasonable ;-) i can't make it work.... my problem 
is the xmlrpc message....

i have a server called wserver, in which i have (the name of sendAgent 
is poorly chosen because it's more likely the receiveAgent...) :
...
server.addHandler( "agent", new sendAgent() );
...
this server runs on the computer i want classes to be updated.


I run a small program within which i have a case calling :

System.out.println(client.getDatas("agent","ecriture",new Vector()));

and i have a class sendAgent in which i have a procedure called 
"ecriture" that should get things and write them to the appropriate 
location....

My problem is probably my understanding of the xml-rpc thing, but here 
what i'm trying to do : I want to send base64 datas as parameters (am i 
right ?). but i don't figure out how and where to send this... is it 
instead of the "new Vector" thing ? I tried to let "ecriture" to have 
parameters, but then i had to change the calling in the 
client.getDatas.... there, i'm lost, mostly because i don't understand 
one thing that may be obvious for you.... can somebody please give me a 
push ?.... ;-)

Thanks in advance
St�phane


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