Ya i did that before but somebody told me that this is not good way coding.
As I am new to coding i dont understand the complexity iissues much during
coding.
here is my piece of code.
* .client.GUI*
*public Class GUi(){**
// More Code**
public void onClick(ClickEvent event) {**
LoginServer loginServer =new LoginServer(getTextBoxUsername().getText(),
getTextBoxPassword().getText());**
loginServer.setConnection(connection);**
connection=loginServer.getConnection();**
// More code**
} *
*}*
**
*client.control*
**
*public class LoginServer {**
// more code**
public void setConnection(Boolean connection) {**
String[] authentication = {username,password};**
//RPC call**
connectionService.connectionServer(authentication, callbackConnection);*
*
*
* System.out.println("setConnection" + connection);**
}**
public Boolean getConnection() {**
return connection;**
}**
AsyncCallback callbackConnection = new AsyncCallback() {**
public void onFailure(Throwable caught) {**
// TODO Auto-generated method stub**
connection=false;**
}**
public void onSuccess(Object result) {**
connection=true;**
System.out.println("onSuccess + connection);**
}**
};**
}** *
**
*help me to solve this.*
**
*thanks
*
On Mon, Mar 19, 2012 at 5:00 PM, Jens <[email protected]> wrote:
> You have to convert your code to use a callback:
>
> Instead of:
>
> void onClick() {
> myObject.doSomethingAsync(xyz);
> myObject.getConnection();
> //additional code
> }
>
> convert it to:
>
> void onClick() {
> myObject.doSomethingAsync(xyz, new Callback() {
> void onSuccess() {
> myObject.getConnection();
> //additional code
> }
> });
> }
>
> void doSomethingAsync(Object o, Callback cb) {
> serverService.rpcMethod(o, new AsyncCallback<Object> {
> void onSuccess(Object result) {
> setConnection(true);
> cb.onSuccess(); //notify caller via its callback
> }
> }
> }
>
> Alternatively you can use two events (one event results in execution of
> the async method and the second one will be fired when the async request
> has been finished).
>
>
> -- J.
>
>
>
> Am Montag, 19. März 2012 16:30:58 UTC+1 schrieb learning coding:
>
>> HI all
>>
>> I am doing web application Project in GWT. I am using RPC, which is
>> working fine.
>>
>> I have 4 packeages
>>
>> 1. .client
>> 2. .client.GUI
>> 3. .client.control
>> 4. .shared
>> 5. .server
>>
>> From .gui.loginpage
>>
>> On onClickmethod of a button I make a object of Login Class which is in
>> client.control
>>
>> onSuccess of RPC public Boolean setConnection(true)
>>
>> but when i try to getConnectionform .gui.loginpage its show me null.
>>
>> because the call back function is executed asynchronously, the function
>> is invoked after the response comes to the browser from the server.
>>
>> But the other part of the code is executed immediately by which time
>> connection is still null.
>> *I need a solution or a method or any logic so that other function waits
>> till the rpc call is complete.*
>> **
>> *Thanks*
>>
>>
> --
> You received this message because you are subscribed to the Google Groups
> "Google Web Toolkit" group.
> To view this discussion on the web visit
> https://groups.google.com/d/msg/google-web-toolkit/-/JF6fL4gXVSUJ.
> To post to this group, send email to [email protected].
> To unsubscribe from this group, send email to
> [email protected].
> For more options, visit this group at
> http://groups.google.com/group/google-web-toolkit?hl=en.
>
--
You received this message because you are subscribed to the Google Groups
"Google Web Toolkit" group.
To post to this group, send email to [email protected].
To unsubscribe from this group, send email to
[email protected].
For more options, visit this group at
http://groups.google.com/group/google-web-toolkit?hl=en.
