gistfile1.java

public interface AddressProxy {
	
	public void setStreet(String street);
	
	public String getStreet();
	
	public void setTown(String town);
	
	public String getTown();

}

public class AddressForm implements AddressProxy {
	private String street;
	private String town;
	public String getStreet() {
		return street;
	}
	public void setStreet(String street) {
		this.street = street;
	}
	public String getTown() {
		return town;
	}
	public void setTown(String town) {
		this.town = town;
	}

}


public interface ClientProxy {
	
	public String getName();
	
	public void setName(String name);
	
	public void setId(Long id);
	
	public Long getId();
	
	public void setLicensor(Boolean isLicensor);
	
	public Boolean isLicensor();
	
	public void setAddress(AddressProxy address);
	
	public AddressProxy getAddress();
}

public class ClientForm implements ClientProxy {
	private String name;
	private Long id;
	private Boolean licensor;
	private AddressProxy address;
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public Long getId() {
		return id;
	}
	public void setId(Long id) {
		this.id = id;
	}
	public Boolean isLicensor() {
		return licensor;
	}
	public void setLicensor(Boolean licensor) {
		this.licensor = licensor;
	}
	public AddressProxy getAddress() {
		return address;
	}
	public void setAddress(AddressProxy address) {
		this.address = address;
	}
	
	

}

public interface SaveClientRequest {
	
	ClientProxy getModel();
	
	void setModel(ClientProxy model);

}

public class SaveClientRequestImpl implements SaveClientRequest {
	private ClientProxy model;

	public ClientProxy getModel() {
		return model;
	}

	public void setModel(ClientProxy model) {
		this.model = model;
	}
}

import com.google.gwt.core.shared.GWT;
import com.google.web.bindery.autobean.shared.AutoBean;
import com.google.web.bindery.autobean.shared.AutoBeanFactory;
import com.sencha.gxt.data.shared.writer.JsonWriter;

public class JsonWriterTester {
	private JsonWriter<SaveClientRequest> writer;
	
	public interface ClientAutoBeanFactory extends AutoBeanFactory {
		
		AutoBean<ClientProxy> getModel();
		
		AutoBean<AddressProxy> address();
		
		AutoBean<SaveClientRequest> request();
	}
	
	private static ClientAutoBeanFactory factory=GWT.create(ClientAutoBeanFactory.class);
	
	
	public void testWriter(SaveClientRequest request){
		try{
			this.writer=new JsonWriter<SaveClientRequest>(factory, SaveClientRequest.class);
			String json=this.writer.write(request);
			System.out.println(json);
		}catch(Exception ex){
			ex.printStackTrace();
		}
	}
	
	public SaveClientRequest buildRequest(){
		SaveClientRequestImpl request=new SaveClientRequestImpl();
		
		ClientForm client=new ClientForm();
		
		AddressForm address=new AddressForm();
		address.setStreet("Av Corriente 3221");
		address.setTown("Ciudad Autonoma de Buenos Aires");
		
		client.setId(null);
		client.setName("Test Client");
		client.setAddress(address);
		client.setLicensor(true);
		
		request.setModel(client);
		return request;
		
	}

}

import com.google.gwt.core.client.EntryPoint;
import com.google.gwt.event.shared.SimpleEventBus;
import com.google.gwt.user.client.ui.RootPanel;
import com.sencha.gxt.widget.core.client.button.TextButton;
import com.sencha.gxt.widget.core.client.container.Viewport;
import com.sencha.gxt.widget.core.client.event.SelectEvent;
import com.sencha.gxt.widget.core.client.event.SelectEvent.SelectHandler;

public class VBITest implements EntryPoint {
	private TextButton jsonButton;

	@Override
	public void onModuleLoad() {
		this.jsonButton=new TextButton("JSON Writer");
		this.jsonButton.addSelectHandler(new SelectHandler() {
			
			@Override
			public void onSelect(SelectEvent event) {
				processSelection();
			}
		});
		RootPanel.get().add(jsonButton);
	}
	
	protected void processSelection(){
		JsonWriterTester tester=new JsonWriterTester();
		SaveClientRequest request=tester.buildRequest();
		tester.testWriter(request);
	}
}