SmartGWT and Restlet

[vanriana]

Hi, i'm newbie in smartgwt..
i have some problem to consume json from web service. First of all i have two projects. Web Service using Restlet and SmartGWT LGPL version, my problem is I want to consume json from restlet for my client side(smartgwt).
Here is my code :

package com.berca.ahu.fidusia.client.ui.data;

import org.restlet.gwt.Client;
import org.restlet.gwt.data.Protocol;

import com.smartgwt.client.data.OperationBinding;
import com.smartgwt.client.data.XJSONDataSource;
import com.smartgwt.client.data.fields.DataSourceIntegerField;
import com.smartgwt.client.data.fields.DataSourceTextField;
import com.smartgwt.client.types.DSDataFormat;
import com.smartgwt.client.types.DSOperationType;
import com.smartgwt.client.types.DSProtocol;
import com.smartgwt.client.types.RPCTransport;

public class DSUser extends XJSONDataSource{
	
	private static DSUser instance = null;  
	final Client client = new Client(Protocol.HTTP);
	final String URL ="http://localhost:8080/AHUFidusiaWebservice/users/1";
    
	public static DSUser getInstance() {  
        if (instance == null) {  
          instance = new DSUser("DSUser_JSON");  
        }  
        return instance;  
    }  

   
    public DSUser(String title) {  
    
    	setDataProtocol(DSProtocol.POSTPARAMS);
    	setDataFormat(DSDataFormat.JSON);
    	DataSourceTextField name = new DataSourceTextField("username", "Username");
    	name.setValueXPath("username");
    	DataSourceIntegerField id = new DataSourceIntegerField("id", "Id");
    	id.setValueXPath("id");
    	id.setPrimaryKey(true);
    	setDataURL(URL);
    	OperationBinding fetch = new OperationBinding();  
    	fetch.setOperationType(DSOperationType.FETCH);  
    	fetch.setDataProtocol(DSProtocol.POSTMESSAGE);
    	setRecordXPath("/users");
    	setDataTransport(RPCTransport.SCRIPTINCLUDE);
    	setCallbackParam("callback");
    	setFields(id, name);
    }
}

Anybody help?
Thanks

[oshinyil]

I have a similiar project with vanriana. I get an error message when making a request json data to the webservice.
This is the error message:
Uncaught JavaScript exception [Script error.] in , line 0

[vanriana]

anybody have an idea please?

[Isomorphic]

Make the URL relative or it is considered a cross-domain call.

If you need further help, post all the information listed in the FAQ.

[vanriana]

and how to solve it?

Make the URL relative or it is considered a cross-domain call.

If you need further help, post all the information listed in the FAQ.

[vanriana]

hi, i get message in restlet console, there was an request to service..
but i can't get data show in my Listgrid. sorry i'm new in smartgwt and restlet..

here is message :

Jul 13, 2011 9:33:02 AM org.restlet.engine.log.LogFilter afterHandle
INFO: 2011-07-13 09:33:02 0:0:0:0:0:0:0:1 0.0.0.0 8080 GET /AHUFidusiaWebservice/users/1 _operationType=fetch&_startRow=0&_endRow=75&_textMatchStyle=substring&_componentId=isc_ListGrid_1&_dataSource=isc_UserView_1_0&isc_metaDataPrefix=_&isc_dataFormat=json&callback=isc.Comm._scriptIncludeReply_0 200 - - 16 http://localhost:8080 Mozilla/5.0 (Windows NT 6.1; rv:5.0) Gecko/20100101 Firefox/5.0 http://127.0.0.1:8888/Fidusia.html?g...127.0.0.1:9997


and this still the same in gwt console

Uncaught JavaScript exception [Script error.] in , line 0

public class DSUser extends RestDataSource{
	
	private static DSUser instance = null;  
	final Client client = new Client(Protocol.HTTP);
	final String URL ="http://localhost:8080/AHUFidusiaWebservice/users/1";
    
	public static DSUser getInstance() {  
        if (instance == null) {  
          instance = new DSUser("DSUser_JSON");  
        }  
        return instance;  
    }  

 setDataFormat(DSDataFormat.JSON);
        setDataProtocol(DSProtocol.GETPARAMS);
        this.setDataTransport(RPCTransport.SCRIPTINCLUDE);
        this.setDataURL(URL);
        this.setJsonRecordXPath("/users");
        
    	DataSourceTextField name = new DataSourceTextField("username", "Username");
    	name.setValueXPath("username");
    	DataSourceIntegerField id = new DataSourceIntegerField("id", "Id");
    	id.setValueXPath("id");
    	id.setPrimaryKey(true);
        setFields(id, name);
    }
}

thanks.

[oshinyil]

Make the URL relative or it is considered a cross-domain call.

If you need further help, post all the information listed in the FAQ.

Thanks.. But, how to solve cross-domain call?

[atomatom]

this is a relative url: /somedir/somefile.html
this is an absolute url: http://someserver.com/somedir/somefile.html

[vanriana]

this is a relative url: /somedir/somefile.html
this is an absolute url: http://someserver.com/somedir/somefile.html

Hi atomatom,
My project is running in two ports..

localhost:8888 for smartgwt

and

localhost:8080 for web service (Restlet)

and how i make these projects communicate in json?
ho i solve this problem, can you help me? Would you like give me example..
i really thanks for your help..

thanks

[vanriana]

some people help me please ...............................

[oshinyil]

Hi atomatom,
My project is running in two ports..

localhost:8888 for smartgwt

and

localhost:8080 for web service (Restlet)

and how i make these projects communicate in json?
ho i solve this problem, can you help me? Would you like give me example..
i really thanks for your help..

thanks

I'm still get error..

[vanriana]

i'm still haven't solution for this problem..
anyone have idea?

[d.cavestro]

i'm still haven't solution for this problem..
anyone have idea?

Are you sure you need XJSonDataSource? I've never used it, since if you don't really do cross-domain calls then RestDataSource is just enough (it really rocks... I've never had problems with it).

By the way, I suppose you have to post:

1. the SmartGWT or SmartClient version and browser version(s) involved;

2. for a server-side problem, the complete logs generated during processing of the request;

3. for a client-side problem, the contents of the Developer Console (see FAQ for usage);

4. if there is a JavaScript error, the stack trace logged in the Developer Console (from Internet Explorer if possible); and

5. sample code.

Posts with incomplete information are much more likely to be ignored.

if you want Isomorphic helps you (as he told you).

Cheers
Davide

[vanriana]

Are you sure you need XJSonDataSource? I've never used it, since if you don't really do cross-domain calls then RestDataSource is just enough (it really rocks... I've never had problems with it).

By the way, I suppose you have to post:

if you want Isomorphic helps you (as he told you).

Cheers
Davide

Hi Davide..
thanks for reply.
I had try with RestDatasource like this post click
but it still get error, and i had also try with relative path, it also still error like looping forever.
i use smartgwt 2.4, browser firefox 5
Can you give some example for me, how to be smartgwt and restlet are communicate.
sorry davide, i'm really newbie with this problem..

thanks in advance

[albu77]

Personnaly I don't know, but found this with google and I think it could help you.
Let us know;

Alain