Re: GWT server Side - Axis2 SOAP - get xml from External Server , [ access denied (java.lang.RuntimePermission modifyThreadGroup) ]

[Alp Yilancioglu]

Thank you for your answers.

Take care;

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Re: rpc serialization without the rpc

[Benjamin Possolo]

Correct me if I am wrong but it sounds like your idea will only have one 
advantage over a traditional caching layer on the server: avoiding 
serialization costs. You will still have deserialization costs which are 
likely a lot more time consuming since they happen in javascript in the 
browser versus in the JVM on the server.

I think what you are suggesting is dangerously bordering along the lines of 
"ghetto."
I feel like caching on the client (using a Command like design pattern and 
local storage) plus a normal caching layer on the server will vastly 
outweigh the benefits and hassle of creating and maintaining an 
GWT-RPC-HTTP frankenstein.

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Re: rpc serialization without the rpc

[Jamie]

While not answering your question exactly, I have seen posts around on 
writing your own caching filter for Java, and they seem pretty easy to do.
And, it would then be really easy to invalidate your cached items.

However, as Jens says, putting all the request parameters into the URL is 
not a good idea.
If you really want, you could write your caching filter to cache POST 
requests.

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Re: iOS 6 Bug: Safari caches POST requests

[Jamie]

You could write the filter to only affect POSTs
Or, you could configure the filter mapping to only apply the filter to your 
Servlet(s).

Jamie.

On Friday, 2 November 2012 14:23:44 UTC-4, Jeffrey Roe wrote:
>
> So this will cause all files to be downloaded over and over again. 
> Is there a way to do this fix just for IOS devices. 
> Jeffrey Roe, 
>
>
>
> On Tue, Oct 2, 2012 at 5:42 PM, Nicolas Hoby 
> > 
> wrote: 
> > Works perfect, thank you! 
> > 
> > Just for completion, to install the filter add the following to your 
> > Web.xml: 
> > 
> >  
> > HeaderFilter 
> > 
> server.services.HeaderFilter 
> >  
> >  
> > HeaderFilter 
> > /* 
> >  
> > 
> > On Sep 27, 11:40 am, Christian Kuetbach  wrote: 
> >> Implement a Header-Filter: 
> >> 
> >> public class HeaderFilter implements Filter { 
> >> 
> >> public void destroy() { 
> >> } 
> >> 
> >> public void doFilter(ServletRequest req, ServletResponse res, 
> >> FilterChain filterChain) 
> >> throws IOException, ServletException { 
> >> 
> >> HttpServletResponse response = (HttpServletResponse) 
> res; 
> >> response.addHeader("Cache-Control", "no-cache"); 
> >> filterChain.doFilter(req, res); 
> >> } 
> >> 
> >> public void init(FilterConfig arg0) throws ServletException { 
> >> } 
> >> 
> >> } 
> >> 
> >> If you set this filter to filter all your reqests to your 
> dispatch-servlet, 
> >> no results should be cached. 
> >> 
> >> Regards, 
> >> Christian Kuetbach 
> > 
> > -- 
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> > 
>

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Re: GWT server Side - Axis2 SOAP - get xml from External Server , [ access denied (java.lang.RuntimePermission modifyThreadGroup) ]

[Jens]

If you dont plan to deploy your app to AppEngine then remove AppEngine from 
your project. If you want to use AppEngine then you should read AppEngine 
documentation and ask for help on the AppEngine group.

I haven't used AppEngine so far, so I can't help you any more.

Also http://www.google.de/search?q=appengine+soap seems to give a good 
amount of useful results.

-- J.


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Re: GWT server Side - Axis2 SOAP - get xml from External Server , [ access denied (java.lang.RuntimePermission modifyThreadGroup) ]

[Alp Yilancioglu]

 if i  remove the App Engine i can use axis or other ways
 
the thing is  i dont want to disable it, but i am not event using it, 
 restrictions are for some purposes i think
 
what do you suggest?  (JENS)

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Re: iOS 6 Bug: Safari caches POST requests

[Jeffrey Roe]

So this will cause all files to be downloaded over and over again.
Is there a way to do this fix just for IOS devices.
Jeffrey Roe,



On Tue, Oct 2, 2012 at 5:42 PM, Nicolas Hoby  wrote:
> Works perfect, thank you!
>
> Just for completion, to install the filter add the following to your
> Web.xml:
>
> 
> HeaderFilter
> server.services.HeaderFilter
> 
> 
> HeaderFilter
> /*
> 
>
> On Sep 27, 11:40 am, Christian Kuetbach  wrote:
>> Implement a Header-Filter:
>>
>> public class HeaderFilter implements Filter {
>>
>> public void destroy() {
>> }
>>
>> public void doFilter(ServletRequest req, ServletResponse res,
>> FilterChain filterChain)
>> throws IOException, ServletException {
>>
>> HttpServletResponse response = (HttpServletResponse) res;
>> response.addHeader("Cache-Control", "no-cache");
>> filterChain.doFilter(req, res);
>> }
>>
>> public void init(FilterConfig arg0) throws ServletException {
>> }
>>
>> }
>>
>> If you set this filter to filter all your reqests to your dispatch-servlet,
>> no results should be cached.
>>
>> Regards,
>> Christian Kuetbach
>
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Re: rpc serialization without the rpc

[Jens]

How do you plan to get the payload of any GWT-RPC request to the server 
when using HTTP GET? Using URL parameters can be pretty unsafe because 
every GWT-RPC payload should contain your app's security token / session id 
to prevent CSRF attacks.

-- J.

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Re: Roadmap GWT?

[Matthew Dempsky]

On Thu, Nov 1, 2012 at 11:47 AM, Marcos  wrote:

> When we have a roadmap GWT?


What do you want a roadmap for?

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Re: GWT server Side - Axis2 SOAP - get xml from External Server , [ access denied (java.lang.RuntimePermission modifyThreadGroup) ]

[Alp Yilancioglu]

> I am really confused ,  i used   javax.xml.soap;   
> getting the same exception;
> java.security.AccessControlException: access denied (java.lang
> .RuntimePermission modifyThreadGroup);
>  
>
 
 

>  
>

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Roadmap GWT?

[Marcos]

When we have a roadmap GWT?

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rpc serialization without the rpc

[Peter Warren]

Hi group folks!

I want to be able to retrieve RPC-serialized objects via HTTP GET. I don't 
really need a service based serialization mechanism but started with 
gwt-rpc before RequestFactory was around. At this point I'd prefer not to 
migrate to RequestFactory if I can avoid it because of existing custom 
field serializers, etc.

The reason I'm looking to retrieve objects via GET is because I want to set 
up a caching reverse proxy in front of my app. I would invalidate the cache 
when an object changes, which is very infrequently.

Is there a way to use ServerSerializationStreamWriter to serialize an 
object on the server outside the context of an RPC request? The object 
would be deserialized on the client via SerializationStreamReader.

I would like to use code on the server like this:
SerializationStreamWriter writer = new 
ServerSerializationStreamWriter(getSerializationPolicy(moduleBaseUrl, 
strongName));
writer.writeObject(configurator);

and code on the client like this:
SerializationStreamFactory factory = 
(SerializationStreamFactory) GWT
.create(RemoteServiceImpl.class);
SerializationStreamReader reader = 
factory.createStreamReader(response.getText());
reader.readObject();

I figure I can send the client permutation strong name to the server, and 
then I should be able to retrieve the correct serialization policy file. I 
can use GWT.getPermutationStrongName() on the client for that, except when 
running in Dev Mode since it returns "HostedMode" instead of a strong name 
hash. I see that the payload of the RPC request when running in Dev Mode 
has a valid strong name. It appears that strong name is being set from 
generated code, and I haven't been able to find how it's being retrieved.

How can I get a valid permutation strong name when running in Dev Mode on 
the client?

Or is there a better way for me to use the RPC serialization 
(SerializationStreamWriter and SerializationStreamReader) to serialize a 
POJO on the server and deserialize on the client?

Thanks for any tips,
Peter

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Re: widget celltable how clear before re-populate

[Mohit Chilkoti]

Hi John,
Is this applicable for DataGrid too?

Please see here 
for
 
details.

Thanks,
Mohit

On Tuesday, 9 November 2010 01:11:35 UTC+5:30, Jeff Schwartz wrote:
>
> Using one of the concrete classes AsyncDataProvider or ListDataProvider 
> whose base class is AbstractDataProvider provides a very efficient 
> mechanism for accessing your widget's underlying data source as well as for 
> manipulating the display of the data itself.
>
> Once a ListDataProvider is setup you can do similar to below:
>
> dataProvider.getList().add(someObjectsList); // add a new SomeObject to 
> the list
> sortSomeObjectsList(dataProvider.getList()); // call a method to sort the 
> list
> dataProvider.refresh(); // tell all widgets using the data provider to 
> refresh themselves because the data has changed
>
> You can also add & replace lists in a ListDataProvider with:
>
> dataProvider.setList(someObjectsList);
>
> To set up a ListDataProvider:
>
> ListDataProvider dataProvider = new 
> ListDataProvider(); // strongly typed declaration - notice the 
> use of type T in the declaration which is the type specifier for the type 
> of objects in the list
> dataProvider.setList(someObjectsList); // the list of objects to be 
> provided by the ListDataProvider
> dataProvider.addDataDisplay(myCellWidget); // the widget the 
> ListDataProvider is providing the data to
>
> Jeff
>
> On Mon, Nov 8, 2010 at 1:22 PM, John LaBanca 
> > wrote:
>
>> You can push new data into the widget using CellTable#setRowData() in 
>> conjunction with CellTable#setRowCount().  If you want to clear the data 
>> first, do the following:
>> myCellTable.setRowCount(0); // Clears all data
>> myCellTable.setRowCount(20, true); // Set the size of the new data
>> myCellTable.setRowData(0, myData); // Set the new data
>>
>> In GWT 2.1.1, there is a new method CellTable#setRowData(List) that 
>> clears all existing data and replaces it with the specified list.
>>
>> Thanks,
>> John LaBanca
>> jlab...@google.com 
>>
>>
>>
>> On Mon, Nov 8, 2010 at 5:13 AM, alf >wrote:
>>
>>> we are render a celltable widget nice when i push a boton. the
>>> problems is when i will push the botton again i create other widget
>>> and adding. How can clear all item adn populate the sam widget with
>>> new datas.
>>>
>>> thanks and excuse for by bad english ans newbie question i have spent
>>> hours fiding examples in doc
>>>
>>> al
>>>
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>
>
>
> -- 
> Jeff
>

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Re: GWT server Side - Axis2 SOAP - get xml from External Server , [ access denied (java.lang.RuntimePermission modifyThreadGroup) ]

[Alp Yilancioglu]

Thank you for your answers;

i am only allowed to use   javax.xml.soap and JAXB by GAE .. uff


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How can I fix "path for project must have only one segment" error when creating a new GWT app in eclipse?

[BrianP]

I'm using Eclipse Helios on Windows 7, with GWT SDK 2.3. I've got a few GWT 
projects with GWT 2.3 SDK. Those projects were created a couple years ago. 
I'm trying to create a new 'Web Application Project' (aka GWT or GAE 
project) and when I do so, I get the following error:

Creation of element failed.

Path for project must have only one segment.

I entered the project name and package and unchecked the GAE box. I suspect 
the problem lies with spaces in the GWT path, because after the 'Use 
default SDK' radio button it has '(gwt-2.3.0 - 2.3.0)'. If I click on 
'Configure SDKs' in the GWT section, the grid inside the dialog there for 
the GWT SDKs has columns for Name, Version, and Location, and it looks like 
it is creating that (gwt-2.3.0 - 2.3.0) from the Name and Version.

I've updated the Google plugin to the latest version. I've downloaded GWT 
SDK 2.5 and tried using that SDK to create a project. I tried a new 'Web 
Application Project' with GWT unchecked and GAE checked. All result in the 
same problem.  My project name was 'MultiModules' because i'm investigating 
doing a project with more than one module.

Any suggestions?

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Re: How to clear fields of editors?

[Ümit Seren]

This is how I usually do it (not sure if this is the best approach). 

In my View: 

public class AccountDetailView  {

public interface AccountDisplayDriver extends 
RequestFactoryEditorDriver {}

@UiField AccountDisplayEditor accountDisplayEditor;
private final AccountDisplayDriver displayDriver;

@Inject
public AccountDetailView(final Binder binder, final AccountDisplayDriver 
displayDriver) {
widget = binder.createAndBindUi(this);
this.displayDriver = displayDriver;
this.displayDriver.initialize(accountDisplayEditor);
}

@Override
 public AccountDisplayDriver getDisplayDriver() {
  return  displayDriver;
 }
}

GIN will make sure that GWT.create is called on the Driver interface and 
from my Presenter I can call getView().getDisplayDriver() to return the 
driver and interact with it. 

On Friday, November 2, 2012 11:25:05 AM UTC+1, Drew Spencer wrote: 

Thanks guys! I think I will call edit() on a new instance, as this is a 
> nice way of doing it.
>
> Also, are there significant benefits to re-using an editor? Mine is 
> declared as final at the top of my view, then in edit() I am calling 
> driver.initialize() and then driver.edit(object). That means I'm re-using 
> it, right?
>
> Drew
>
> On Friday, 2 November 2012 09:32:07 UTC, Jens wrote:
>>
>> Just searched a bit and I think the post in question was 
>> https://groups.google.com/d/msg/google-web-toolkit/aemVcEjK_5I/7VISroJi2VcJ
>>
>> But if its seems to be solved since GWT 2.3 it should be fine to reuse 
>> the editor driver.
>>
>> -- J.
>>
>>
>> Am Freitag, 2. November 2012 03:30:36 UTC+1 schrieb Thomas Broyer:
>>>
>>>
>>> On Thursday, November 1, 2012 7:45:30 PM UTC+1, Jens wrote:


> +1 except you don't have to create a new editor driver, you can reuse 
> a previously built one.
>

 Wasn't there a memory leak somewhere in the editor framework when you 
 reuse the driver? That was somewhere in my head while answering. But maybe 
 its already solved.

>>>
>>> I'm not aware of anything like this (which doesn't mean there's no such 
>>> issue, but it hasn't been reported)
>>>
>>

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generate and execute javascript at runtime?

[Dennis Haupt]

i'm trying to integrate jqxgrid and write a gwt wrapper around it. (it's
some jquery grid) i know i can write native js methods, but this isn't
enough. i need to dynamically build the call and then execute it as if it
was sent from the server inside a script tag. how can i do that?

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Re: How to clear fields of editors?

[Thomas Broyer]

Yes and no. You only need to call initialize() once.

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Re: How to clear fields of editors?

[Drew Spencer]

Thanks guys! I think I will call edit() on a new instance, as this is a 
nice way of doing it.

Also, are there significant benefits to re-using an editor? Mine is 
declared as final at the top of my view, then in edit() I am calling 
driver.initialize() and then driver.edit(object). That means I'm re-using 
it, right?

Drew

On Friday, 2 November 2012 09:32:07 UTC, Jens wrote:
>
> Just searched a bit and I think the post in question was 
> https://groups.google.com/d/msg/google-web-toolkit/aemVcEjK_5I/7VISroJi2VcJ
>
> But if its seems to be solved since GWT 2.3 it should be fine to reuse the 
> editor driver.
>
> -- J.
>
>
> Am Freitag, 2. November 2012 03:30:36 UTC+1 schrieb Thomas Broyer:
>>
>>
>> On Thursday, November 1, 2012 7:45:30 PM UTC+1, Jens wrote:
>>>
>>>
 +1 except you don't have to create a new editor driver, you can reuse a 
 previously built one.

>>>
>>> Wasn't there a memory leak somewhere in the editor framework when you 
>>> reuse the driver? That was somewhere in my head while answering. But maybe 
>>> its already solved.
>>>
>>
>> I'm not aware of anything like this (which doesn't mean there's no such 
>> issue, but it hasn't been reported)
>>
>

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Re: How to clear fields of editors?

[Jens]

Just searched a bit and I think the post in question 
was https://groups.google.com/d/msg/google-web-toolkit/aemVcEjK_5I/7VISroJi2VcJ

But if its seems to be solved since GWT 2.3 it should be fine to reuse the 
editor driver.

-- J.


Am Freitag, 2. November 2012 03:30:36 UTC+1 schrieb Thomas Broyer:
>
>
> On Thursday, November 1, 2012 7:45:30 PM UTC+1, Jens wrote:
>>
>>
>>> +1 except you don't have to create a new editor driver, you can reuse a 
>>> previously built one.
>>>
>>
>> Wasn't there a memory leak somewhere in the editor framework when you 
>> reuse the driver? That was somewhere in my head while answering. But maybe 
>> its already solved.
>>
>
> I'm not aware of anything like this (which doesn't mean there's no such 
> issue, but it hasn't been reported)
>

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Re: GWT server Side - Axis2 SOAP - get xml from External Server , [ access denied (java.lang.RuntimePermission modifyThreadGroup) ]

[Jens]

If Axis spawns threads internally you can't use it on AppEngine unless you 
modify Axis to use AppEngines ThreadManager.

http://code.google.com/p/googleappengine/wiki/WillItPlayInJava states:

*JAX-WS is supported for web service clients but not for servers. To write 
a SOAP server on App Engine you must use javax.xml.soap and JAXB.*

-- J.

Am Freitag, 2. November 2012 09:43:52 UTC+1 schrieb Alp Yilancioglu:
>
>  this subject is really important for me; 
>

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Re: GWT server Side - Axis2 SOAP - get xml from External Server , [ access denied (java.lang.RuntimePermission modifyThreadGroup) ]

[Alp Yilancioglu]

 this subject is really important for me; 

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Scrolling on iPad

[Mike Dee]

I have an app with a DataGrid on it and a vertical Scrollbar.  Works as 
expected - when more data is available then fits within grid, vertical 
scrollbar allows user to scroll down.  On iPad, however, the scrollbar is 
not visible.  Strangely, scrolling still works.  It's just that the 
scrollbar doesn't appear and thus most users won't know that they can 
scroll.  How can I make the scrollbar appear?

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