Re: Stop further execution till rpc completes

2011-08-01 Thread Paul Robinson 

There have been lots of people ask this question here. The advice you will get 
is:
(1) Don't try to do it like that. It's evil.
(2) Embrace asynchrony.

Here's what your code should look like:

// some code here 1
myservice.rpcCall(args, new AsyncCallbackFoo {
public void onFailure(Throwable t) {}

public void onSuccess(Foo foo) {
// some code here 2
}
});

Paul

On 01/08/11 16:29, Deepak Singh wrote:

Hi,

I have a requirement,

// some code here 1

RPC call

// some code here 2

I want to stop any further execution after rpc call till rpc completes. When 
RPC call is finished, the control should automatically start executing next 
line of code.

I tried Scheduler class but could get into success.


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Re: Stop further execution till rpc completes

2011-08-01 Thread Deepak Singh 
I am making 2 seperate RPC calls.
 Whichever is finished first, i would add RootPanel.get(id).add(widget)
into onSuccess.

I can not add same widgets two times in both onSuccess(). So i am out of
mind how to resolve this.

Any logic pls.

On Mon, Aug 1, 2011 at 9:08 PM, Jens jens.nehlme...@gmail.com wrote:

 Its not possible to stop execution as RPC requests are async. The only
 thing you can do is to put your code that has to wait into the onSuccess
 method of your RPC call.

 -- J.

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Re: Stop further execution till rpc completes

2011-08-01 Thread Magno Machado 
I think you'll have to do something like this:

public class MyEntryPoin implements EntryPoint {
  private boolean alreadyAddedWidget;
  public void onModuleLoad() {
alreadyAddedWidget = true;
MyService service = GWT.create(MyService.class);
service.someCall(args, new AsyncCallbackFoo() {
  public void onFailure(Throwable caught) {}
  public void onSuccess(Foo result) {
if (alreadyAddedWidget)
  return;
alreadyAddedWidget = true;
RootPanel.get().add(...);
  }
}

service.anotherCall(args, new AsyncCallbackBar() {
  public void onFailure(Throwable caught) {}
  public void onSuccess(Bar result) {
if (alreadyAddedWidget)
  return;
alreadyAddedWidget = true;
RootPanel.get().add(...);
  }
}
  }
}

On Mon, Aug 1, 2011 at 1:23 PM, Deepak Singh deepaksingh...@gmail.comwrote:

 I am making 2 seperate RPC calls.
  Whichever is finished first, i would add RootPanel.get(id).add(widget)
 into onSuccess.

 I can not add same widgets two times in both onSuccess(). So i am out of
 mind how to resolve this.

 Any logic pls.


 On Mon, Aug 1, 2011 at 9:08 PM, Jens jens.nehlme...@gmail.com wrote:

 Its not possible to stop execution as RPC requests are async. The only
 thing you can do is to put your code that has to wait into the onSuccess
 method of your RPC call.

 -- J.

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-- 
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http://blog.magnomachado.com.br
http://code.google.com/p/emballo/

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Re: Stop further execution till rpc completes

2011-08-01 Thread Magno Machado 
  public void onModuleLoad() {
alreadyAddedWidget = true;
Sorry, it should be set to false here

On Mon, Aug 1, 2011 at 2:13 PM, Magno Machado magn...@gmail.com wrote:

 I think you'll have to do something like this:

 public class MyEntryPoin implements EntryPoint {
   private boolean alreadyAddedWidget;
   public void onModuleLoad() {
 alreadyAddedWidget = true;
 MyService service = GWT.create(MyService.class);
 service.someCall(args, new AsyncCallbackFoo() {
   public void onFailure(Throwable caught) {}
   public void onSuccess(Foo result) {
 if (alreadyAddedWidget)
   return;
 alreadyAddedWidget = true;
 RootPanel.get().add(...);
   }
 }

 service.anotherCall(args, new AsyncCallbackBar() {
   public void onFailure(Throwable caught) {}
   public void onSuccess(Bar result) {
 if (alreadyAddedWidget)
   return;
 alreadyAddedWidget = true;
 RootPanel.get().add(...);
   }
 }
   }
 }

 On Mon, Aug 1, 2011 at 1:23 PM, Deepak Singh deepaksingh...@gmail.comwrote:

 I am making 2 seperate RPC calls.
  Whichever is finished first, i would add RootPanel.get(id).add(widget)
 into onSuccess.

 I can not add same widgets two times in both onSuccess(). So i am out of
 mind how to resolve this.

 Any logic pls.


 On Mon, Aug 1, 2011 at 9:08 PM, Jens jens.nehlme...@gmail.com wrote:

 Its not possible to stop execution as RPC requests are async. The only
 thing you can do is to put your code that has to wait into the onSuccess
 method of your RPC call.

 -- J.

 --
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 --
 Magno Machado Paulo
 http://blog.magnomachado.com.br
 http://code.google.com/p/emballo/




-- 
Magno Machado Paulo
http://blog.magnomachado.com.br
http://code.google.com/p/emballo/

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Re: Stop further execution till rpc completes

2011-08-01 Thread Alan Chaney 

How about:
if (!RootPanel.get(id).contains(widget)) {
RootPanel.get(id).add(widget);

Because of the nature of javascript and web browsers the above call is 
inherently thread safe.


HTH

Alan


On 8/1/2011 9:23 AM, Deepak Singh wrote:

I am making 2 seperate RPC calls.
 Whichever is finished first, i would add 
RootPanel.get(id).add(widget) into onSuccess.


I can not add same widgets two times in both onSuccess(). So i am out 
of mind how to resolve this.


Any logic pls.

On Mon, Aug 1, 2011 at 9:08 PM, Jens jens.nehlme...@gmail.com 
mailto:jens.nehlme...@gmail.com wrote:


Its not possible to stop execution as RPC requests are async. The
only thing you can do is to put your code that has to wait into
the onSuccess method of your RPC call.

-- J.
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Re: Stop further execution till rpc completes

2011-08-01 Thread Deepak Singh 
There is no contains(widget) available like RootPanel.get(id).contains(
widget).



On Mon, Aug 1, 2011 at 10:48 PM, Alan Chaney a...@mechnicality.com wrote:

  How about:
 if (!RootPanel.get(id).contains(widget)) {
 RootPanel.get(id).add(widget);

 Because of the nature of javascript and web browsers the above call is
 inherently thread safe.

 HTH

 Alan



 On 8/1/2011 9:23 AM, Deepak Singh wrote:

 I am making 2 seperate RPC calls.
  Whichever is finished first, i would add RootPanel.get(id).add(widget)
 into onSuccess.

  I can not add same widgets two times in both onSuccess(). So i am out of
 mind how to resolve this.

  Any logic pls.

 On Mon, Aug 1, 2011 at 9:08 PM, Jens jens.nehlme...@gmail.com wrote:

 Its not possible to stop execution as RPC requests are async. The only
 thing you can do is to put your code that has to wait into the onSuccess
 method of your RPC call.

  -- J.
  --
 You received this message because you are subscribed to the Google Groups
 Google Web Toolkit group.
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Re: Stop further execution till rpc completes

2011-08-01 Thread Alan Chaney 
True its WidgetCollection that has a 'contains' method but a 
RootPanel.get returns a RootPanel object which is a sub-class of 
ComplexPanel.


ComplexPanel has a getWidgetIndex methods which return -1 for 
getWidgetIndex(Widget) and null for getWidgetIndex(HasWidget) when the 
requested object isn't in the widget list. You can derive your own 
'contains' logic from the above.



Its purely a matter of style, but I'd personally prefer to avoid having 
extra state flags to manipulate and would rather use state that's 
already in the data of the object in question.



Alan


On 8/1/2011 11:51 AM, Deepak Singh wrote:
There is no contains(widget) available like 
RootPanel.get(id).contains(widget).




On Mon, Aug 1, 2011 at 10:48 PM, Alan Chaney a...@mechnicality.com 
mailto:a...@mechnicality.com wrote:


How about:
if (!RootPanel.get(id).contains(widget)) {
RootPanel.get(id).add(widget);

Because of the nature of javascript and web browsers the above
call is inherently thread safe.

HTH

Alan



On 8/1/2011 9:23 AM, Deepak Singh wrote:

I am making 2 seperate RPC calls.
 Whichever is finished first, i would add
RootPanel.get(id).add(widget) into onSuccess.

I can not add same widgets two times in both onSuccess(). So i am
out of mind how to resolve this.

Any logic pls.

On Mon, Aug 1, 2011 at 9:08 PM, Jens jens.nehlme...@gmail.com
mailto:jens.nehlme...@gmail.com wrote:

Its not possible to stop execution as RPC requests are async.
The only thing you can do is to put your code that has to
wait into the onSuccess method of your RPC call.

-- J.
-- 
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Re: Stop further execution till rpc completes

2011-08-01 Thread Mark 
You could always do the following

boolean alreadyAdded = false;

void addWidget(Widget widget) {
 if (!alreadyAdded) {
  alreadyAdded = true;
  RootPanel.get().add(widget);
 }
}

and then call addWidget() in each onSuccess(); first caller wins.

On Aug 1, 12:23 pm, Deepak Singh deepaksingh...@gmail.com wrote:
 I am making 2 seperate RPC calls.
  Whichever is finished first, i would add RootPanel.get(id).add(widget)
 into onSuccess.

 I can not add same widgets two times in both onSuccess(). So i am out of
 mind how to resolve this.

 Any logic pls.







 On Mon, Aug 1, 2011 at 9:08 PM, Jens jens.nehlme...@gmail.com wrote:
  Its not possible to stop execution as RPC requests are async. The only
  thing you can do is to put your code that has to wait into the onSuccess
  method of your RPC call.

  -- J.

  --
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