[Laszlo-user] question about javarpc and dataset

[Ruben Reusser]

This is my lzx file and the java class - with the HashMap example I 
actually get 2 rows in the datagrid, however no data shows up.
I initially had the return of String test() as the dataset

Ruben

// sample trying to return an XML string
    public String test() {
        return "<quotes>"+
        "<quote id=\"200\" text=\"quote 10\" firstname=\"Ruben\" 
lastname=\"Reusser\" plan=\"1500\" type=\"Self\" date=\"1/1/2007\"/>"+
        "<quote id=\"199\"  text=\"quote 1\"  firstname=\"Carla\" 
lastname=\"Poulin\" plan=\"1500\" type=\"Family\" date=\"1/2/2007\"/>"+
        "</quotes>";
    }
   
    public static Hashtable getProperties()
    {
            return System.getProperties();
    }


// sample trying to return a HashMap
    public HashMap test()
    {
        HashMap map = new HashMap();
        map.put("id", "200");
        map.put("text", "quote 10");
        map.put("firstname", "Ruben");
        map.put("lastname", "Reusser");
        map.put("plan", "1500");
        map.put("type", "Self");
        map.put("date", "1/1/1907");

        HashMap quoteMap = new HashMap();
        quoteMap.put("quote1", map);

        map.put("id", "201");
        map.put("text", "quote 10");
        map.put("firstname", "Ruben");
        map.put("lastname", "Reusser");
        map.put("plan", "1500");
        map.put("type", "Self");
        map.put("date", "1/1/1907");
        quoteMap.put("quote2", map);

        HashMap returnMap = new HashMap();
        returnMap.put("quotes", quoteMap);
       
        return returnMap;
    }


<canvas width="800" height="600">
    <dataset name="quoteData"/>
   
    <security>
        <allow>
            <pattern>^examples\.ConstructExample</pattern>
        </allow>
    </security>

    <!-- See $LPS_HOME/WEB-INF/classes/ConstructExample.java for java
        source. -->
    <javarpc name="ce" scope="session" autoload="true"
             remoteclassname="examples.ConstructExample">

        <handler name="onerror" args="err">
            Debug.write("----------");
            Debug.write("onerror:", err)
        </handler>

        <handler name="onload">
            Debug.write("----------");
            Debug.write("constructed with", this.createargs);
            Debug.write(this.proxy);
        </handler>

        <remotecall name="test" funcname="test" dataobject="quoteData">
   
        <handler name="ondata" args="value">
                Debug.write('result is:');
                Debug.inspect(value);
                Debug.inspect(quoteData);
        </handler>
       
        </remotecall>
   
    </javarpc>

    <button x="10" y="10" onclick="ce.test.invoke();">
    </button>

    <grid x="10" y="40" bgcolor="0xffffff" datapath="quoteData:/*" 
width="400" height="400">

                <gridtext editable="false" datapath="@date"> Date 
</gridtext>
                <gridtext editable="false" datapath="@id"> ID </gridtext>
                <gridtext editable="false" datapath="@firstname"> First 
Name </gridtext>
                <gridtext editable="false" datapath="@lastname"> Last 
Name </gridtext>
                <gridtext editable="false" datapath="@plan"> Plan 
</gridtext>
                <gridtext editable="false" datapath="@type"> Rated for 
</gridtext>

    </grid>

   
</canvas>




Henry Minsky wrote:
> Can you send a small example of what your code looks like ?
>  
> There is an example in the source distribution in 
> test/rpc/javarpc/serverenv.lzx, which accesses a server side call to 
> system environment info test.xmlrpc.SystemProp
>
> <canvas debug="true" width="800" >
>
> <!--    <debug x="370" width="400" height="300" /> -->
>
>     <alert name="errormsg"/>
>
>     <simplelayout spacing="10"/>
>
>     <dataset name="envDset" />
>
>     <list name="env" width="250" height="200">
>         <textlistitem name="ti" datapath="envDset:/*" 
> text="$path{'name()'}">
>             <method event="onselect">
>                 canvas.display.setText(datapath.xpathQuery('text()'))
>             </method>
>         </textlistitem>
>     </list>
>            
>     <text name="display" selectable="true" width="350" 
> multiline="true" bgcolor="0xd0d0d0" />
>
>     <security>
>         <allow>
>             <pattern>^org\.openlaszlo\.test\.xmlrpc\.SystemProp$</pattern>
>         </allow>
>     </security>
>
>     <javarpc name="systemprop" scope="none"
>              remoteclassname=" org.openlaszlo.test.xmlrpc.SystemProp">
>
>         <method event="onload">
>             Debug.write('onload invoke');
>             this.getProperties.invoke();
>         </method>
>
>         <method event="onerror" args="msg">
>             errormsg.setAttribute('text', 'error: ' + msg)
>             errormsg.open()
>         </method>
>
>         <remotecall name="getProperties" funcname="getProperties"
>                     dataobject="$once{envDset}">
>             <method event="ondata" args="d">
>                 Debug.write('data:', d);
>             </method>
>         </remotecall>
>
>     </javarpc>
>
>
>
> Java Code:
>
> package org.openlaszlo.test.xmlrpc;
>
> import org.apache.xmlrpc.*;
> import java.util.*;
>
> public class SystemProp
> {
>         public static Hashtable getProperties()
>         {
>                 return System.getProperties();
>         }
>
>     public static void main(String argv[])
>     {
>         WebServer ws = new WebServer(8181);
>         SystemProp se = new SystemProp();
>         ws.addHandler("localservice", se);
>         ws.start();
>     }
> }
>
>
> On 7/19/07, *Ruben Reusser* <rr at headwire.com <mailto:rr at headwire.com>> 
> wrote:
>
>     hi
>
>     I am new thew openlaszlo and figured I do a little test program using
>     JavaRPC and the 4.0.2 release. I am trying to populate a dataset
>     (list)
>     from a value returned from my java class but seem to fail.
>     I can call the java class and get a return value (String) that is an
>     XML. However, I am not sure if that is the way I am supposed to do
>     it or
>     not. When I look at the dataset it's empty. Does anyone have an
>     example
>     program that does that?
>     I checked the mailing list and the forum but I am unable to find a
>     working example (I can find a couple of people asking the same
>     question).
>
>     Thanks
>
>     Ruben
>
>
>
>
> -- 
> Henry Minsky
> Software Architect
> hminsky at laszlosystems.com <mailto:hminsky at laszlosystems.com>
>