Re: Is Google Web Toolkit for me?

[sidni]

Hey Spierce,

If u require AJAX enabled web app, GWT is viable option but it seems u
dont have much hands-on with JAVA/its related technology and learning
the whole JAVA web App stack is quite an effort from scratch.

There is no doubt that choosing GWT means ur web app has to be purely
Java-based.
As rightly pointed out in above post, u would require GWT (client-
side) and Spring/Hibernate or other similar technologies (server-side)
to create a maintainable, efficient Java web app. Thus u would be
learning a whole new techs to bring ur web app live.

If u r comfortable with Php world, I would suggest u stick to it and
find ways to introduce Ajax within it, in the end ur goal is not to
learn different technologies or be an architect but to build ur web
app, make it live.

Hope it doesnt confuse u,
Nitesh


On Sep 3, 10:36 pm, mikedshaffer  wrote:
> I'll throw in here
>
> GWT is primarily a client side technology, so in your statement
> "better off sticking with PHP, JS, & CSS", GWT would replace only the
> last 2.  PHP (obviously) only runs on the server.  By choosing GWT you
> will still need to choose a server side technology assuming you want
> to connect to a database.  Many people are familiar with PHP, so they
> stick with that, communicating between client and server using JSON,
> which GWT handles terrifically.  You can also use Java for your server
> side technology, and then you can very simply use GWT-RPC to handle
> your communication.  As for connecting to MySQL, Java will connect to
> MySQL all day long, as will PHP.  Just a matter of what syntax/stack
> you are familiar with.  The key thing to focus on here with GWT is
> that it is an AJAX client "library" that makes it very easy to build
> powerful AJAX web clients (or substitute your favorite acronym for
> that) using Java syntax.  If you use Java for your server tier, then
> you get to use a teenie bit more GWT, but that's it.
>
> Does that make sense?
>
> Later,
>
> Shaffer
>
> On Sep 2, 6:54 pm, David Given  wrote:
>
>
>
> > -BEGIN PGP SIGNED MESSAGE-
> > Hash: SHA1
>
> > spierce7 wrote:
>
> > [...]
>
> > > By the way, I'm going to need to integrate with a web database. The
> > > obvious one for me was MySQL, but that was mainly because PHP
> > > integrates so easily with it. What kind of options do I have with this
> > > while using GWT? I'd rather not have to have GWT integrate with PHP,
> > > and then MySQL, or some other ridiculous thing. What options do I have
> > > here? Thanks in advance!
>
> > I'm using Berkeley DB JE for one of my apps; it's a pure-Java
> > reimplementation of the old classic Berkeley DB non-relational database.
> > It's got some really nice Java reflection glue that combines well with
> > GWT's RPC glue. I can pull an object out of the database on the server
> > and pass it directly to the client in about three lines of code, and GWT
> > and Berkeley DB take care of all the plumbing. And because it's pure
> > Java, there's no extra dependencies on the server --- you just drop the
> > jarfile in WEB-INF/lib and it Just Works(tm).
>
> > A server-side RPC implementation can be as literally trivial as this:
>
> > DataObject getFromDB(int key)
> > {
> >   try
> >   {
> >     return _index.get(key);
> >   }
> >   catch (DatabaseException e)
> >   {
> >     return null;
> >   }
>
> > }
>
> > - --
> > ┌─── ｄｇ＠ｃｏｗｌａｒｋ．ｃｏｍ ─http://www.cowlark.com─
> > │
> > │ "People who think they know everything really annoy those of us who
> > │ know we don't." --- Bjarne Stroustrup
> > -BEGIN PGP SIGNATURE-
> > Version: GnuPG v1.4.9 (GNU/Linux)
> > Comment: Using GnuPG with Mozilla -http://enigmail.mozdev.org/
>
> > iD8DBQFKnxPQf9E0noFvlzgRAhmbAJ9VSY0eSfTjCoUUwNyJtf32UyYNcgCghhbe
> > Qe2VV/Tvae3wndsEBQJvyKo=
> > =4rPN
> > -END PGP SIGNATURE-- Hide quoted text -
>
> - Show quoted text -
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How to improve RPC performance

[Livinglegends]

Hi,

I have one question regarding performance of GWT.

In our project there are total 12 column and 5000 record to display.
We are using List of pojo to get the data from server.
DB is taking 9 sec to retrieve all data but to retrieve data through
rpc call from server and client is taking 7-8 second thus total time
taken by it is 9 sec + 8 sec = 17 secs.

So, how to improve RPC performance so I can retrieve data from server
to client withing 2-3 seconds.

Kindly help me.

Livinglegends

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Re: Hyperlink Token and Parms

[Tolga Özdemir]

Yeaps I think so.. I am currently working on such a class.. Let's who
finishes it first, shares it :)



On Fri, Sep 4, 2009 at 3:22 AM, Thomas Broyer  wrote:

>
>
>
> On 3 sep, 18:09, vokke  wrote:
> > Hello Newsgroup,
> > I have a problem creating hyperlinks with the right token and parms.
> >
> > Hyperlink test = new Hyperlink("TEST", "?
> > wid=1"+"&pos=2"+"#dosomething"));
> >
> > I do get "#?wid=1&pos=2#dosomething"
> > But I need:
> > "?wid=1&pos=2#dosomething"
> > to make sure to use
> >
> > String id = Window.Location.getParameter("wid ");
> >
> > How do I achieve this?
> > I tried with setHTML but no luck.
>
> Hyperlink is for the cases where you'd use History.newItem() on click,
> otherwise, use an Anchor widget.
> >
>


-- 
Tolga Özdemir

Mobile 0 536 963 7890
MSN ozde...@hotmail.com

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Re: "semaphores" in gwt

[JSaar]

2 Options:

make 2 booleans set each in the belonging callback.onSuccess
and check them in both callback.onSuccess
and go on if both are true

On serverside make 1 method out of the 2 you have now
so you have 1 rpc-call

the first way would be the semaphore-way ... standard-business

On Aug 30, 2:20 am, Jaap  wrote:
> Hi,
>
> When starting my webapp I do two RPC calls. I need the data of both of
> them in order to display something. If you work with threads with a
> native program you just use semaphores to achieve this. What's the
> way to do this in GWT?
>
> Thanks
>
> Jaap
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Re: Unable to Find 'com/google/gwt/widgetIdeas/libIdeas.gwt.xml'

[Mark Rieck]

I might as well document this for myself so I don't forget...

To use the incubator in GWT 1.7 you'll need to do the steps above, and add
something like this to your build.xml file:



The build.xml is only created if you used webAppCreator to create the
project, and as far as I know that's needed if you want GWT to output files
like the old version... (I'm using GWT/PHP on my wamp localhost server, so I
need the files.)

Here's an example of my build.xml  (Note: I never use hosted mode, I just
copy over files to a gwt folder on localhost).



  
  

  






  

  



  

  


  


  

  

  

  


  
  
  
  

  

  

  

  

  




With this configuration "ant build" from the command line will compile and
copy over the gwt files to my server folder.

Of course, you'll need to have to have ant installed and in the classpath:
http://techpitcher.com/installing-apache-ant-in-windows.html





On Mon, Dec 15, 2008 at 4:06 PM, Mark Rieck wrote:

> Wow, I don't know how I didn't see that. I guess it's because I made two
> projects because I was using old incubator code before etc, and I was
> looking at the wrong file except when I got so frustrated I had to post to
> Google Groups...
>
> Sorry to waste everyone's time.  Thanks.
>
>
>
> On Mon, Dec 15, 2008 at 12:47 PM, Isaac Truett  wrote:
>
>>
>> Did you mean com.google.gwt.libideas.LibIdeas?
>>
>> On Mon, Dec 15, 2008 at 3:33 PM, uprightnetizen
>>  wrote:
>> >
>> > I'm trying to use the FastTree in my project in Eclipse.
>> >
>> > I have this in my module gwt.xml:
>> >  
>> >  
>> >
>> > I went to Project Properties -> Java Build Path, then added the
>> > gwt-incubator_1-4_final.jar
>> >
>> > I also changed the text in the shell and compile.cmd to have ;path-to-
>> > incubator-jar after the other jars.
>> >
>> > Is there anything else I have to do to get the incubator widgets to
>> > work?
>> >
>> > >
>> >
>>
>> >>
>>
>

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Re: Is it a bug in DialogBox?

[Parvez Shah]

Not sure if its a Bug of DialogBox
my guess is its a bug of decorator panel

any way your problem is you are setting size of DialogBox which is creating
the problem
solution 1) remove setSize
solution 2) if you want to use setSize then wrap your content in vertical
panel
something like this

class ClothingForm extends DialogBox {
public ClothingForm() {
setText("Clothing");
//setSize("30em", "30em");

Button ok = new Button("OK");
ok.addClickHandler(new ClickHandler() {
public void onClick(ClickEvent event) {
ClothingForm.this.hide();
}
});

VerticalPanel content = new VerticalPanel();
content.setSize("30em", "30em");
setWidget(content);
content.add(ok);
}
}


On Thu, Sep 3, 2009 at 8:05 PM, Bob L.  wrote:

>
> public class ClothingForm extends DialogBox {
>public ClothingForm() {
>  setText("Clothing");
>  setSize("30em", "30em");
>
>  Button ok = new Button("OK");
>  ok.addClickHandler(new ClickHandler() {
>public void onClick(ClickEvent event) {
>ClothingForm.this.hide();
>}
>  });
>
>  setWidget(ok);
>}
> }
>
> The result:
>
> http://lh3.ggpht.com/_HQyyXYqJEaE/Sp_TxaB6FII/AMk/F3pqmFFjG4s/s800/dialogbox.png.jpg
>
> >
>

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Re: translate DateTimeFormat output

[PH]

Hi Dominik,

 tnx for your reply!!

 Actually I was looking for some solution where I could determine at
run time in which language I should display my date information (ie.
portuguese, english, spanich, etc).

 Maybe this is determined by the client browser? Since the JS will
execute on the client, it will print using the client system
language?!

 Tnx once more!

 Best regards

 PH


On Sep 2, 6:53 pm, Dominik Steiner 
wrote:
> Hi PH,
>
> you mean how you can set the locale for a specific language?
>
> I added this line to the modules gwt.xml file
>
>         
>
> This one will set the locale for the language of spanish.
>
> HTH
>
> Dominik
>
> On 2 Sep., 14:34, PH  wrote:
>
>
>
> > Hi guys,
>
> >  sorry if this question looks stupid, but I didn't find an answer for
> > it.
>
> >  How could I translate the DateTimeFormat.getFormat().format() output?
> > ie.:
>
> >  DateTimeFormat.getFormat(" ").format(dateobject);
>
> >  from: "October 2009" to "Outubro 2009"
>
> >  Tnx in advance.
>
> >  Best regards,
>
> >  PH
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Re: Hyperlink Token and Parms

[Thomas Broyer]

On 3 sep, 18:09, vokke  wrote:
> Hello Newsgroup,
> I have a problem creating hyperlinks with the right token and parms.
>
> Hyperlink test = new Hyperlink("TEST", "?
> wid=1"+"&pos=2"+"#dosomething"));
>
> I do get "#?wid=1&pos=2#dosomething"
> But I need:
> "?wid=1&pos=2#dosomething"
> to make sure to use
>
> String id = Window.Location.getParameter("wid ");
>
> How do I achieve this?
> I tried with setHTML but no luck.

Hyperlink is for the cases where you'd use History.newItem() on click,
otherwise, use an Anchor widget.
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Re: Your GWT based open source project(s)

[Jeff Chimene]

On 09/03/2009 04:40 PM, Fred Sauer wrote:
> From time to time I hear from people who have created GWT related open
> source projects.
> 
> If that includes you, here's my 1 question, 10 second survey:
> 
> * Q. Were you encouraged to open source your project because of the
> benefits*
> *  you gained from another open source project (GWT, or any
> other project)?*
> 
> (Private replies are fine too).

Yes

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Your GWT based open source project(s)

[Fred Sauer]

>From time to time I hear from people who have created GWT related open
source projects.
If that includes you, here's my 1 question, 10 second survey:
* Q. Were you encouraged to open source your project because of the
benefits*
*  you gained from another open source project (GWT, or any other
project)?*

(Private replies are fine too).


Thanks--
Fred Sauer
Developer Advocate
Google Inc. 1600 Amphitheatre Parkway
Mountain View, CA 94043
fre...@google.com

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Re: Iframe = multithreading ???

[David]

There is just 1 JS thread. Regardless of URL or IFrame.
The limit of max 2 connections is purely based on URL, not on per
IFrame basis. IE8 allows more than 2, I forgot the exact number.
To work around the connections limit you can spread web resources over
different hosts in the same domain.

Getting access to static classes in different IFrames can works but:
1) security restrictions might stop you from calling from one IFrame to another.
2) GWT code is obfuscated and can be totally different with every
change you make. So in order to get access to some static classes, you
will need to expose them through JSNI.

On Thu, Sep 3, 2009 at 2:10 AM, ben fenster wrote:
>
> another thing about the http request limitation most browsers rejects
> more then 2 simultinus requests to a spacific  url and i wondered i
> its aplays to 2 diffrent browser windows (diffrent process in new
> browsers) and if iframe acts as new web page  maybe the limitation
> grows by 2 for each iframe
>
> On Sep 2, 5:05 pm, ben fenster  wrote:
>> your answear is based on your knolage in js but i need an answear
>> based on actual in depth knowlage in how browser work since each
>> iframe act as an independed wep page and loaded sepertly then the
>> containing page made me wonder about how its being done without a
>> diffrent thread ?
>> and if another thread is envolved in loading then maybe the new thread
>> is also responsible on running the js code contained in the page of
>> the iframe ?
>> On Sep 2, 5:46 pm, David Given  wrote:
>>
>> > -BEGIN PGP SIGNED MESSAGE-
>> > Hash: SHA1
>>
>> > ben fenster wrote:
>> > > i was wondering that if by opening another module in an iframe tag the
>> > > code of that module runs in another thread ??
>>
>> > Nope. There is no way of getting access to multiple Javascript threads
>> > from a web browser, unless you use some sort of extension like Google
>> > Gears or HTML5 web workers. Every part of the Javascript VM that your
>> > code can see is part of the same event loop.
>>
>> > > more over is the limit of 2 open http request apply on 2 diffrent
>> > > modules running in diffrent iframes ??
>>
>> > Don't know about this one.
>>
>> > - --
>> > ┌─── ｄｇ＠ｃｏｗｌａｒｋ．ｃｏｍ ─http://www.cowlark.com─
>> > │
>> > │ "People who think they know everything really annoy those of us who
>> > │ know we don't." --- Bjarne Stroustrup
>> > -BEGIN PGP SIGNATURE-
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>> > Comment: Using GnuPG with Mozilla -http://enigmail.mozdev.org/
>>
>> > iD8DBQFKnxH6f9E0noFvlzgRApqiAKC/xF4z1x0t7s+8kAsTVoSxYFRFmQCfaUcx
>> > 7F+QaH0Fdc9baW9Wcgl3swM=
>> > =ukVk
>> > -END PGP SIGNATURE-
> >
>

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Re: Announcing the Google Plugin for Eclipse 1.1.0

[NIgel Leck]

Why no support for Netbeans ? This just seems to be a bit of a game to
force people to use one IDE over the other.
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Re: hosted mode trouble

[Nathan Wells]

Otherwise, you're going to have problems with the SOP (Same Origin
Policy). Basically javascript has a rule that you can't make requests
to a server other than the one the script originated from. There are
ways around this, but I'll let you do the research on that, or
alternately, compile and deploy each time you make a change.

On Sep 3, 8:45 am, Jeff Chimene  wrote:
> On Wed, Sep 2, 2009 at 6:49 PM, sidkdbl07 wrote:
>
> > My php file is on a web server configured with PHP5. The address of
> > the weather.php5 file ishttp://www.myserver.com/weather.php5.
>
> > I'm debugging my GWT files in Eclipse. The GWT class (see above) makes
> > a call to the weather.php5 page with the following line...
>
> > RequestBuilder builder = new RequestBuilder(RequestBuilder.GET,
> > URL.encode("http://www.myserver.com/weather.php5";));
>
> > Honestly, I don't know if I'm using the Jetty server. How do I tell? I
> > have no app engine configured in Eclipse.
>
> > When I debug my GWT project in Eclipse response.getStatusCode() comes
> > back as 0 (zero)
> > When I add -noserver to the run configuration, the GWT hosted mode
> > browser doesn't display my page... it seems to just sit there empty.
>
> > I hope this clears up what I'm trying to accomplish.
>
> Yes, that's the answer I was looking for.
>
> Do you know that in noserver mode you must compile your GWT
> application, and deploy it to your server?
>
> http://code.google.com/webtoolkit/doc/1.6/FAQ_DebuggingAndCompiling.h...
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Re: GWT, MVP, and nested widgets

[Nathan Wells]

Ian,

we've taken a little different approach than you have. Let me explain
the setup we have for the navigation section of our application:

NavigationPresenter - the presenter for this section of the
application
NavigationDisplay - a presenter-utilized, view implemented interface.
HasMenuStructure - an interface, extended by NavigationDisplay, used
for adding menuitems and submenus.
NavigationPanel - a view layer object, extends Composite, implements
NavigationDisplay

We're using an adaptation of the GWT MenuBar widget that implements
the HasMenuStructure interface.

interface HasMenuStructure {
  ...
  void addMenuItem(String html, Command cmd);
  HasMenuStructure addSubMenu(String html, boolean hasChildMenus);
  ...
}

hasChildMenus is important in our particular use, but may not be in
yours.

Using this setup, we can create the menu structure in the presenter
dynamically, without worrying about the underlying display details.
The html and cmd parameters for addMenuItem() are read in from a
configuration file on the server, filtered based on authorization
information, then passed to the presenter to allow the view to show
things to the user. It would be trivial, I would think, to replace the
Command interface with a ClickHandler interface, but since MenuBar
made use of commands, we went with that.

HTH...

On Sep 3, 8:07 am, Ian Bambury  wrote:
> Thanks Jason,
> I understand what you are getting at, and I have come across this before,
> but hadn't considered using it here.
>
> I'm using this project as an opportunity to learn and to see how 'right' I
> can get it. If someone were paying me, then I wouldn't be so fussy, but my
> feelings are this:
>
> The MenuItem's presenter (and it's not GWT's MenuItem) should deal with user
> gestures from the MenuItemView - I like the simplicity of 'Click->fire
> event' and I don't like the idea that MenuItem+MenuItemView would not be a
> stand-alone unit and would rely on parent widgets to sort out what is going
> on. If the MenuItem presenter isn't going to do anything except pass through
> a reference to the MenuItemView, and the MenuItemView is going to hold the
> place token field, then why don't I just say to hell with it and get the
> MenuPanel to send Labels to the MenuPanelView. It would save all that
> faffing about.
>
> I think I'd like to stick with the MenuItem presenter firing an event if I
> can, and see if I can come up with a 'politically correct' answer to this.
> I'm sure there must be someone out there, or something on the web which can
> tell me how to do it, or explain why it's not possible, or give me a better
> solution altogether.
>
> If I find something, I'll post it.
>
> Thanks again,
>
> Ian
>
> http://examples.roughian.com
>
> 2009/9/3 Jason A. Beranek 
>
>
>
> > Ian,
>
> > Ok, I think I understand what are trying to do. Let me expand a bit on
> > the addMenuItem( Object i..); example in something a little less
> > abstract. First, I'm assuming your MenuItem is not equivalent to the
> > GWT MenuItem class, if it is the solution would be different. Note, I
> > don't have a full example so mileage may very. The approach is meant
> > to deal with MVP of list type interfaces, where the list items (i.e.,
> > MenuItem) bubble events up to a list presenter (i.e. MenuPanel).
>
> > The example assumes that instead of each MenuItem reporting
> > PlaceChange events, MenuItem selection events are bubbled from the UI
> > up to the MenuPanel presenter (through its view) and the MenuPanel
> > presenter fires the PlaceChange event. Effectively, a MenuItem's
> > display becomes a simple widget within MenuPanel's view and doesn't
> > require its own presenter (the presenter's work is handled by
> > MenuPanel's presenter).
>
> > First, some simple setup:
>
> > public class MenuPanel {
>
> >  interface Display {
>
> >    void addMenuItem( String label, String token );
>
> >    HasSelectionHandlers getMenuItemSelectionButton();
>
> >    void clearMenuItems();
> >  }
>
> >  ...
>
> > }
>
> > The above class shows a possible piece of the MenuPanel display
> > interface. I am assuming in the above that a MenuItem takes a label
> > that defines how the UI displays the object and the token as you
> > describe above for the associate place/location when the item is
> > clicked. In this example, the MenuPanel presenter determines the menu
> > items required for the current place and calls addMenuItem to tell the
> > MenuPanel view the MenuItem widgets to construct in the UI. The
> > clearMenuItem method can be used clear the MenuItems to rebuild the
> > specific items when the page changes.  Notice that I included another
> > Display method called "getMenuItemSelectionButton()", this returns an
> > object the MenuPanel presenter can add a handler to so it can detect a
> > MenuItem selection event. Here's an example of the bindDisplay method:
>
> > void bindDisplay( Display display ) {
> >  this.display = display;
>
> >  //Listen for a token selection when the use

Re: Hyperlink Token and Parms

[vokke]

Thanks for reply,
but I can only do Window.Location.replace onHistoryChanged.
So my HistoryHandler fires twice.
Is it a better solution to parse the token manually, without
Window.Location.getParameter?
Thanks again,
Vokke

On 3 Sep., 20:41, Tolga Özdemir  wrote:
> You can use Location.replace(); maybe it helps..
>
>
>
> On Thu, Sep 3, 2009 at 7:09 PM, vokke  wrote:
>
> > Hello Newsgroup,
> > I have a problem creating hyperlinks with the right token and parms.
>
> > Hyperlink test = new Hyperlink("TEST", "?
> > wid=1"+"&pos=2"+"#dosomething"));
>
> > I do get "#?wid=1&pos=2#dosomething"
> > But I need:
> > "?wid=1&pos=2#dosomething"
> > to make sure to use
>
> > String id = Window.Location.getParameter("wid ");
>
> > How do I achieve this?
> > I tried with setHTML but no luck.
> > Thanks,
> > Vokke
>
> --
> Tolga Özdemir
>
> Mobile 0 536 963 7890
> MSN ozde...@hotmail.com
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Re: hosted mode trouble

[sidkdbl07]

Wow, its funny how in one split moment, epiphany can hit!

Thank you Jeff!
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Re: @SuppressWarnings("serial")

[Andy]

Thanks!

On Sep 3, 12:48 pm, Paul Grenyer  wrote:
> Hi
>
> > As there are far better ways of doing that sort of thing, I guess that
> > Servlets should be stateless and therefore don't need to be
> > Serializable. However, as they have to implement the Serializable
> > interface, suppressing the warnings is neater than generating IDs all
> > the time.
>
> You've got it.
>
> --
> Thanks
> Paul
>
> Paul Grenyer
> e: paul.gren...@gmail.com
> b: paulgrenyer.blogspot.com
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Re: @SuppressWarnings("serial")

[Paul Grenyer]

Hi

> As there are far better ways of doing that sort of thing, I guess that
> Servlets should be stateless and therefore don't need to be
> Serializable. However, as they have to implement the Serializable
> interface, suppressing the warnings is neater than generating IDs all
> the time.

You've got it.

-- 
Thanks
Paul

Paul Grenyer
e: paul.gren...@gmail.com
b: paulgrenyer.blogspot.com

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Re: @SuppressWarnings("serial")

[Andy]

Sorry, I was reading that the reason that Servlets implement the
Serializable interface was so that server vendors had the option of
hibernating a Servlet's state for the purpose of load balancing or
server replication.

The only 'state' that I can think that a Servlet could have would be a
static object that did something like count how may times the Servlet
has performed a particular task.

As there are far better ways of doing that sort of thing, I guess that
Servlets should be stateless and therefore don't need to be
Serializable. However, as they have to implement the Serializable
interface, suppressing the warnings is neater than generating IDs all
the time.

On Sep 3, 12:03 pm, Paul Grenyer  wrote:
> Hi
>
> > Don't the Servlets need to have a serial version ID in case the server
> > decides to passivate them?
>
> I'm afraid I have no idea what you mean here
>
> > ...or would that imply that the Servlets have 'state' (which shouldn't
> > be the case).
>
> Servlets don't have state outside of the http session.
>
> --
> Thanks
> Paul
>
> Paul Grenyer
> e: paul.gren...@gmail.com
> b: paulgrenyer.blogspot.com
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Prevent duplicate record insertion on page refresh

[Rahul]

Hi,
I am displaying values in a listbox through connecting with an
sqlserver via RPC. Whenever I refresh the browser the values in the
listbox gets duplicated.

Can anyone tell me how to solve this problem? Is it something to do
with the client side of gwt or the server side?


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Re: User Interface Standards?

[Sumit Chandel]

Hi Dave,
I would have to agree that UI Standards is a pretty broad term here, so it's
hard to tell what exactly you or the higher-ups in your company are
referring to. If they just want to get an idea of what the GWT widget set
looks like, you should probably invite them to take a look at the GWT
Showcase sample application.

GWT Showcase:
http://gwt.google.com/samples/Showcase/Showcase.html

Hope that helps,
-Sumit Chandel

On Thu, Aug 27, 2009 at 8:26 AM, David C. Hicks  wrote:

>
> I'm looking for documentation about what UI standards GWT may follow, if
> any.  My "higher ups" are interested in where we stand in this regard.
> Can someone point me to a good source for information?  I've had no
> luck, so far.
>
> Thanks,
> Dave
>
>
> >
>

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Re: @SuppressWarnings("serial")

[Paul Grenyer]

Hi

> Don't the Servlets need to have a serial version ID in case the server
> decides to passivate them?

I'm afraid I have no idea what you mean here

> ...or would that imply that the Servlets have 'state' (which shouldn't
> be the case).

Servlets don't have state outside of the http session.

-- 
Thanks
Paul

Paul Grenyer
e: paul.gren...@gmail.com
b: paulgrenyer.blogspot.com

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Re: DOM.getElementById() vs $doc.getElementById()

[Thad]

I found what works in IE, and does not break hosted mode, Firefox 3.5,
or Safari 4:  Do NOT try to hide/show my application DIV or put my
widget into it.  Hide the LOGIN_DIV as show, but put the
MainWindowWidget in the default root panel.  So

private static void doLogin() {
...
logonPanel.setVisible(false);
RootPanel.get().add(new MainWindowWidget());
...
}

Returning to the login is now just

public static void showLoginDiv() {
RootPanel.get().clear();
RootPanel logonPanel = RootPanel.get(Workstation.LOGIN_DIV);
logonPanel.setVisible(true);
}

I was afraid this would break some things in my application, like a
DIV in which I occasionally open an IFRAME for downloading various
files from the server.  However that still works fine.

Thanks for the help.

Now on to History.

On Sep 2, 1:54 pm, Thad  wrote:
> On Sep 1, 6:30 pm, Thomas Broyer  wrote:
>
> > On 2 sep, 00:16, Thad  wrote:
> ...
> > > Right now I'm having bigger problems trying to do things 
> > > byhttp://code.google.com/p/google-web-toolkit-incubator/wiki/LoginSecur...
> > > ...
>
> > From the comments on that 
> > page:http://groups.google.fr/group/Google-Web-Toolkit/t/2b2ce0b6aaa82461
>
> I've followed the link above.  What I have works excellently in hosted
> mode, as well as in Firefox 3.5, and Safari 4--the browser's password
> manager is triggered, and the user is logged in.  However I've still
> no luck with IE7 (and no Javascript error indicated).
>
> Does IE have a problem with hiding/showing DIV's?  The form behaves
> properly.  injectLoginFunction() works (see below), the doLogin()
> method is called, and the user logged in (so says my server's
> console).  As you see below, on a successful login, the LOGIN_DIV in
> the original panel is hidden, the APPLICATION_DIV is made visible, and
> the application's MainWindowWidget is created and added to the
> APPLICATION_DIV.  (After a user logs off the server, the showLoginDiv
> () method is called, and we start over.)
>
> As I said, this works in hosted mode, Firefox 3.5, and Safari 4.  In
> IE, after the login completes, all I see is a blank browser, and
> "Done" in the lower left message area (no JS error).
>
> Is there another way to handle this that will work with IE?
>
> private static native void injectLoginFunction() /*-{
>         $wnd.__gwt_login = function() {
>                 @com.mycorp.web.client.Workstation::doLogin()();
>         };
>
> }-*/;
>
> @SuppressWarnings("unused")
> private static void doLogin() {
>         final RootPanel applPanel = RootPanel.get
> (Workstation.APPLICATION_DIV);
>         final RootPanel logonPanel = RootPanel.get(Workstation.LOGIN_DIV);
>         AsyncCallback callback = new AsyncCallback() {
>                 public void onSuccess(LoginInformation result) {
>                         Workstation.setLoginInfo(result);
>                         logonPanel.setVisible(false);
>                         applPanel.setVisible(true);
>                         MainWindowWidget mw = new MainWindowWidget();
>                         applPanel.add(mw);
>                 }
>                 public void onFailure(Throwable caught) {
>                         if 
> (caught.getMessage().contains("java.net.ConnectException"))
>                                 Window.alert("Cannot connect to server.\n"+
>                                                 "Server name or RPC number 
> invalid.");
>                         else
>                                 Window.alert(caught.getMessage());
>                 }
>         };
>
>         String name = ((InputElement)Document.get().getElementById
> ("username")).getValue();
>         String pw = ((InputElement)Document.get().getElementById
> ("password")).getValue();
>         String svr = ((InputElement)Document.get().getElementById
> ("server")).getValue();
>         ClientInfo ci = new ClientInfo();
>         LiloServicesAsync service = (LiloServicesAsync) GWT.create
> (LiloServices.class);
>         service.doLogin(name, pw, svr, ci, callback);
>
> }
>
> public static void showLoginDiv() {
>         RootPanel applPanel = RootPanel.get(Workstation.APPLICATION_DIV);
>         applPanel.clear();
>         applPanel.setVisible(false);
>         RootPanel logonPanel = RootPanel.get(Workstation.LOGIN_DIV);
>         logonPanel.setVisible(true);
>
> }
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Re: blank page and other weirdness after upgrade, 1.5 to 1.7

[Dave]

Thanks for the replies, guys.
Thanks for validating what I was seeing, Rajeev. (and sorry for
jumping to @ss_umptions)

Best,
Dave

On Aug 31, 2:50 pm, Rajeev Dayal  wrote:
> Hi Dave,
>
> As with Isaac and Ian, I did not receive your response either.
>
> I'm glad that you figured the problem out. Isaac is correct in his
> assessment; I've confirmed that it is indeed a problem to give an element in
> your HTML page an id which matches the name of your module. I've opened the
> following bug:
>
> http://code.google.com/p/google-web-toolkit/issues/detail?id=4003
>
> Rajeev
>
> On Mon, Aug 31, 2009 at 2:26 PM, Isaac Truett  wrote:
>
> > No worries.
>
> > I looked up your message directly in Groups, and I see that you
> > identified your problem as being a div with an ID that's the same as
> > your module name. I don't believe this is a documented gotcha, but I
> > do recall seeing another instance of it on the forum recently. What I
> > don't recall seeing is an explanation of why this should be a problem.
> > My guess is that something in the bootstrapping wants to use the
> > module name as an ID and having another element in the HTML with that
> > ID causes the conflict. But again, that's only a guess.
>
> > On Mon, Aug 31, 2009 at 2:03 PM, Dave wrote:
>
> > > Yeah, it's good to be reminded never to make assumptions - thanks,
> > > Isaac.
>
> > > Dave
>
> > > On Aug 31, 10:40 am, Isaac Truett  wrote:
> > >> Dave,
>
> > >> I can't speak for Rajeev, but your reply to him never reached my
> > >> inbox. I understand your frustration. Do please try to be nice.
>
> > >> Thanks,
> > >> Isaac
>
> > >> On Mon, Aug 31, 2009 at 1:27 PM, Dave wrote:
>
> > >> > Why say something like 'post back here and we'll dig deeper' if you
> > >> > don't intend to follow the thread and make good on your promise?
>
> > >> > Dave
>
> > >> > On Aug 25, 9:20 am, Rajeev Dayal  wrote:
> > >> >> Hey Dave,
> > >> >> A couple things to try:
>
> > >> >> -Blow away the mmclient subdirectory located under your war directory
> > >> >> -Clear your FF3 cache
>
> > >> >> Try that out and see if that helps. If not, post back here and we'll
> > dig
> > >> >> deeper.
>
> > >> >> Rajeev
>
> > >> >> On Mon, Aug 24, 2009 at 2:36 PM, Dave  wrote:
>
> > >> >> > Hi all,
>
> > >> >> > I'm getting several problems after upgrading to 1.7.
> > >> >> > In hosted mode:
> > >> >> > - all the http status codes are 304 (Not Modified)
> > >> >> > - I only see a blank page
> > >> >> > - when I Compile/Browse, FF3 tells me GWT Module needs to be (re)
> > >> >> > compiled, (I've tried refreshing first - same thing)
> > >> >> > - if I change the module name to something bogus in my host html
> > file,
> > >> >> > and refresh, things seem to work.
> > >> >> > For example, when I change from  to  > >> >> > id="x_mmcclient">, I still get 304s, but I also get
> > >> >> >  [ERROR] Unable to load module entry point ...
> > >> >> >   com.google.gwt.core.client.JavaScriptException: (Error): Invalid
> > >> >> > argument.
> > >> >> >     number: -2147024809
> > >> >> >   description: Invalid argument.
> > >> >> >  [ERROR] Failure to load module 'mmcclient'
> > >> >> > with the line number of my entry point class where I call
> > >> >> >  RootPanel.get("mmcclient").add(containerLayout);
>
> > >> >> > But then the module is loaded and my app is fine. No blank page!
>
> > >> >> > - finally, one of my css resource directories (sc) must be copied
> > into
> > >> >> > the public root, otherwise it will not be found.
>
> > >> >> > Some further info,
> > >> >> > the war directory structure looks like this (my module name is
> > >> >> > mmcclient),
> > >> >> > - war
> > >> >> >  - conf
> > >> >> >  - images
> > >> >> >  - mmcclient
> > >> >> >  - sc
> > >> >> >  - WEB-INF
> > >> >> >  - MMCClient.css
> > >> >> >  - MMCClient.html
>
> > >> >> > The module is loaded from the host html as:
> > >> >> >     > >> >> > src="mmcclient/mmcclient.nocache.js">
> > >> >> > Even when I get a blank page, I believe this file is being found.
> > >> >> > (Firebug shows its JS functions).
>
> > >> >> > I'm working with the Eclipse (3.4.2) GWT plugin, if that's
> > important.
>
> > >> >> > Thanks for any advice!
> > >> >> > -Dave
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Re: @SuppressWarnings("serial")

[Andy]

Don't the Servlets need to have a serial version ID in case the server
decides to passivate them?

...or would that imply that the Servlets have 'state' (which shouldn't
be the case).

On Sep 3, 11:38 am, Paul Grenyer  wrote:
> Hi
>
> On Thu, Sep 3, 2009 at 7:32 PM, Andy wrote:
>
> > Cheers.
>
> > Yeah, I've done that, but I was just wondering if there was a reason
> > that the GWT team were suppressing it (other than to have the initial
> > project be created with any warnings)?
>
> Have a look at the code in more detail. You'll see that it implements
> an interface that has to be serializble. The server side class doesn't
> need to be serializable so the warning is suppressed.
>
> --
> Thanks
> Paul
>
> Paul Grenyer
> e: paul.gren...@gmail.com
> b: paulgrenyer.blogspot.com
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Re: @SuppressWarnings("serial")

[Paul Grenyer]

Hi

On Thu, Sep 3, 2009 at 7:32 PM, Andy wrote:
>
> Cheers.
>
> Yeah, I've done that, but I was just wondering if there was a reason
> that the GWT team were suppressing it (other than to have the initial
> project be created with any warnings)?

Have a look at the code in more detail. You'll see that it implements
an interface that has to be serializble. The server side class doesn't
need to be serializable so the warning is suppressed.

-- 
Thanks
Paul

Paul Grenyer
e: paul.gren...@gmail.com
b: paulgrenyer.blogspot.com

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Re: Hyperlink Token and Parms

[Tolga Özdemir]

You can use Location.replace(); maybe it helps..



On Thu, Sep 3, 2009 at 7:09 PM, vokke  wrote:

>
> Hello Newsgroup,
> I have a problem creating hyperlinks with the right token and parms.
>
> Hyperlink test = new Hyperlink("TEST", "?
> wid=1"+"&pos=2"+"#dosomething"));
>
> I do get "#?wid=1&pos=2#dosomething"
> But I need:
> "?wid=1&pos=2#dosomething"
> to make sure to use
>
> String id = Window.Location.getParameter("wid ");
>
>
> How do I achieve this?
> I tried with setHTML but no luck.
> Thanks,
> Vokke
>
>
> >
>


-- 
Tolga Özdemir

Mobile 0 536 963 7890
MSN ozde...@hotmail.com

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Re: @SuppressWarnings("serial")

[Andy]

Cheers.

Yeah, I've done that, but I was just wondering if there was a reason
that the GWT team were suppressing it (other than to have the initial
project be created with any warnings)?

On Sep 3, 11:29 am, Chad  wrote:
> Andy,
>
> If you are using Eclipse (I assume you are since you are using the
> GEP), just delete that and you will see the warning:
>
> The serializable class DataServiceImpl does not declare a static final
> serialVersionUID field of type long
>
> You will also get 3 quick fix options:
>   - Add default serial version ID
>   - Add generated serial version ID
>   - Add @SuppressWarnings 'serial' to 'GreetingServiceImpl'
>
> Any of those three options would work. Just take your pick.
>
> HTH,
> Chad
>
> On Sep 3, 11:37 am, Andy  wrote:
>
>
>
> > Does anyone know why does the GreetingServiceImpl Servlet in the
> > project created by the GWT Eclipse plugin have a @SuppressWarnings
> > ("serial") annotation?
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Re: @SuppressWarnings("serial")

[Chad]

Andy,

If you are using Eclipse (I assume you are since you are using the
GEP), just delete that and you will see the warning:

The serializable class DataServiceImpl does not declare a static final
serialVersionUID field of type long

You will also get 3 quick fix options:
  - Add default serial version ID
  - Add generated serial version ID
  - Add @SuppressWarnings 'serial' to 'GreetingServiceImpl'

Any of those three options would work. Just take your pick.

HTH,
Chad


On Sep 3, 11:37 am, Andy  wrote:
> Does anyone know why does the GreetingServiceImpl Servlet in the
> project created by the GWT Eclipse plugin have a @SuppressWarnings
> ("serial") annotation?
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was not serializable and has no ...

[melistik]

Hello,
i've got a problem with filling a ListStock with items directly from a
database query.
My Errormessage is :
[ERROR] Type
'com.extjs.gxt.ui.client.store.ListStore'
was not serializable and has no concrete serializable subtypes

I tried many things with Serializable, IsSerializable ...

Could someone give me a hint ?

At the bottom u could see my source.
Many thanks
melistik


ArtikelItem:

public class ArtikelItem extends BaseModel implements Serializable  {
private static final long serialVersionUID = 2919804850716642773L;
public ArtikelItem() {
}
public ArtikelItem(Integer art_nr, String style_nr, String color,
ArrayList groups) {
set ...
}
...


ServiceImpl:

public ListStore getStyleArticles(String value) {
...
PreparedStatement getSomething = conection.prepareStatement("select *
from test");
ResultSet sRes = getSomething.executeQuery();
while(sRes.next()) {
articles.add(newArtikelItem(null,sRes.getString
("blabla"),null,group));
}
...
return articles;
}


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Aligning Widget in RootPanel

[sidni]

Hi,

Consider 2 code snipet below:
My intention is to display "Hello" in Center of the page.

1. Using Label directly

Label l = new Label("NITESH");
l.setHorizontalAlignment(HasAlignment.ALIGN_CENTER);
RootPanel.get().add(l);

This displays it in center.

2. Label widget contained in Vertical/HorizontalPanel

-
HorizontalPanel hp = new HorizontalPanel();
Label l = new Label("Hello");
hp.add(l);
hp.setHorizontalAlignment(HasAlignment.ALIGN_CENTER);
//hp.setCellHorizontalAlignment(l,
HasHorizontalAlignment.ALIGN_CENTER);
RootPanel.get().add(hp);
-

If we replace HorizontalPanel with VerticalPanel we get result the
same.

How would I display my label at Center of page if its contained under
some Panel ? Am I missing something ?

10x

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Re: Iframe = multithreading ???

[David Given]

ben fenster wrote:
> ok  thats sounds right but if thats true can i access static classes
> in the entrypoint module from a seperate module loaded in an iframe
> (that ofcours exists in the first module) ?

Javascript will let you do it, provided the security rules let you (the 
page in the iframe must come from the same domain that your script 
does). I don't know whether it's possible to make GWT give you seamless 
access from Java, though --- you'd probably have to use Javascript 
trampolines. (Where one module explicitly exports stuff to the parent 
window, and then another module explicitly imports it again.)

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Regular Popup Window in GWT?

[lakshmi thyagarajan]

Hi,

I want to add a regular pop-up window to my application. I tried using a
PopupPanel (and DecoratedPopupPanel). But it doesnt have regular window
controls (like minimize, maximize, close etc). Am forced to either use the
auto-hide feature or include a Widget (like a button) to close the panel. Am
not able to minimize the panel and work in another window.
Does GWT have any other Window like widget?

Thanks for your time!
Lakshmi

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Is it a bug in DialogBox?

[Bob L.]

public class ClothingForm extends DialogBox {
public ClothingForm() {
  setText("Clothing");
  setSize("30em", "30em");

  Button ok = new Button("OK");
  ok.addClickHandler(new ClickHandler() {
public void onClick(ClickEvent event) {
ClothingForm.this.hide();
}
  });

  setWidget(ok);
}
}

The result:
http://lh3.ggpht.com/_HQyyXYqJEaE/Sp_TxaB6FII/AMk/F3pqmFFjG4s/s800/dialogbox.png.jpg

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Image layering using GWT

[jonty]

Hi everyone,

I am using GWT1.7. I am facing some problems with image layering. I am
using Image api to add image to panel. Once I add the image I want to
add another image on top of that on mouseclick at the click location.

Please help me on how to solve this problem. Can this be done with GWT
1.7? If yes how it can be done ? If not what is another alternative ?

Thanks
Bharat

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Re: ServletOutputStream Closed while downloading xls stream in GWT

[Srinivas U]

Hi Vijjj,

  I have the same issue. When we try to open Excel file using GWT
Window.open("excel.jsp", "_blank", ""); its opening the file for a
second and its closing automatically. Did you get any solution for
this issue?


On Aug 24, 3:48 am, vijjj  wrote:
> Hi Sin-Kang,
>
> Thanks for the reply.
>
> May be I may have to do something like that. But having to deploy a
> separate server just to download a file seems far stretched.
> There must be a way out to solve this with the current set up.
> Looking for solutions or a work around.
>
> Are there any client based (javascript) libraries available to
> generate Excel/PDF?

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Hyperlink Token and Parms

[vokke]

Hello Newsgroup,
I have a problem creating hyperlinks with the right token and parms.

Hyperlink test = new Hyperlink("TEST", "?
wid=1"+"&pos=2"+"#dosomething"));

I do get "#?wid=1&pos=2#dosomething"
But I need:
"?wid=1&pos=2#dosomething"
to make sure to use

String id = Window.Location.getParameter("wid ");


How do I achieve this?
I tried with setHTML but no luck.
Thanks,
Vokke


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When create a multiple GWT module in a project?

[Xavier Pegenaute]

Hi,

I am not used to develop web apps and I have no a clear idea about
when is better to use more than one module entry in my project. Any
one could clarify this?

Thanks & Regards.
Xavi.

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Gwt debugging in Eclipse

[sidni]

Hi,

I've developed a client side GWT app, which I somehow have to debug. I
set a BreakPoint on my required class-line and invoke Eclipse
debugging perspective which opens successfully.

Now problem is,  we get below hierarchy:

Thread Main --> Scanner .getnextToken()

and if I try "step over" option in eclipse, this debugger keeps on
showing other various "parser" and "JDTCompiler" lines.

How do i get to see debug lines for my gwt classes, why GWT debugging
opens up with "Scanner .getnextToken()", how can I avoid this ?


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Re: Is Google Web Toolkit for me?

[mikedshaffer]

I'll throw in here

GWT is primarily a client side technology, so in your statement
"better off sticking with PHP, JS, & CSS", GWT would replace only the
last 2.  PHP (obviously) only runs on the server.  By choosing GWT you
will still need to choose a server side technology assuming you want
to connect to a database.  Many people are familiar with PHP, so they
stick with that, communicating between client and server using JSON,
which GWT handles terrifically.  You can also use Java for your server
side technology, and then you can very simply use GWT-RPC to handle
your communication.  As for connecting to MySQL, Java will connect to
MySQL all day long, as will PHP.  Just a matter of what syntax/stack
you are familiar with.  The key thing to focus on here with GWT is
that it is an AJAX client "library" that makes it very easy to build
powerful AJAX web clients (or substitute your favorite acronym for
that) using Java syntax.  If you use Java for your server tier, then
you get to use a teenie bit more GWT, but that's it.

Does that make sense?

Later,

Shaffer

On Sep 2, 6:54 pm, David Given  wrote:
> -BEGIN PGP SIGNED MESSAGE-
> Hash: SHA1
>
> spierce7 wrote:
>
> [...]
>
> > By the way, I'm going to need to integrate with a web database. The
> > obvious one for me was MySQL, but that was mainly because PHP
> > integrates so easily with it. What kind of options do I have with this
> > while using GWT? I'd rather not have to have GWT integrate with PHP,
> > and then MySQL, or some other ridiculous thing. What options do I have
> > here? Thanks in advance!
>
> I'm using Berkeley DB JE for one of my apps; it's a pure-Java
> reimplementation of the old classic Berkeley DB non-relational database.
> It's got some really nice Java reflection glue that combines well with
> GWT's RPC glue. I can pull an object out of the database on the server
> and pass it directly to the client in about three lines of code, and GWT
> and Berkeley DB take care of all the plumbing. And because it's pure
> Java, there's no extra dependencies on the server --- you just drop the
> jarfile in WEB-INF/lib and it Just Works(tm).
>
> A server-side RPC implementation can be as literally trivial as this:
>
> DataObject getFromDB(int key)
> {
>   try
>   {
>     return _index.get(key);
>   }
>   catch (DatabaseException e)
>   {
>     return null;
>   }
>
> }
>
> - --
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> │ "People who think they know everything really annoy those of us who
> │ know we don't." --- Bjarne Stroustrup
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@SuppressWarnings("serial")

[Andy]

Does anyone know why does the GreetingServiceImpl Servlet in the
project created by the GWT Eclipse plugin have a @SuppressWarnings
("serial") annotation?
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HTML tag

[Eric]

Is there a good way in GWT to give the functionality of the HTML
 tag?  I do not mean the Label widget here.  I want to write
code that produces

Name:



from a Texbox widget and something else.  I have emulated this by
creating a ClickHandler, assigning it to each of the labels, and
storing the label-to-textbox relation in a HashMap, but that is a lot
of trouble to emulate a basic part of HTML. There should be an easier
way.  Doing that aso forces one to remove the connections so one does
not leak memory.

I know--it's hard to give an arbitrary id to a Widget; the
ensureDebugId method should only be used for debugging, but there
should be something.  The alternative method of using  doesn't
really work with GWT being so table-happy:

Name:

as Grids would put the label and text box in different cells.

Respectfully,
Eric Jablow
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Re: Good practice: setting style before adding it to a panel!

[Ed]

He Alexander,

Thanks for the idea. I started that way... but when the application
got "too" complex it  was too restrictive. I still use this often, but
not always
For example: when working with decorators that all independent and add
extra functionality to the widget when it's their turn to decorate the
widget..
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Re: ext-GWT vs GWT-ext

[martin.krau...@gmail.com]

I apologize if you felt that it was a personal attack but truthfully
this response of yours really make very little sense. I urge you to
read it again with an open mind.

What you're saying is that any developer can do anything with their
product at anytime and you try to justify their move. Unfortunaltey
the software world and licensing does not work that way when there are
other libraries with their own licenses to adhere to.

Let me quote from the EPL link I provided earlier :

"The EPL 1.0 is not compatible with the GPL, and a work created by
combining a work licensed under the GPL with a work licensed under the
EPL cannot be lawfully distributed."


On Sep 3, 10:25 am, Shawn Brown  wrote:

> > There's a huge difference between a platform / app server / Java and a
> > library being GPL. A library being GPL means you need you release the source
> > of your entire application, simple. An app server or Java being GPL has
> > absolutely no effect on the licensing and distribution of your application
> > while  using GPL library means that you need to release all your code
> > making it unsuitable for use in commercial products.
>
> So according to your analysis ExtGWT is unsuitable for commercial
> products.  So what.  The authors of ExtGWT are free to release their
> work under any license they choose.  Just because the developers don't
> see their work serving your purposes...so what.  A developer can
> choose any license they wish for their work.  That is what the truth
> is so why are you calling me names?
>
> You somehow believe that ExtGWT developers should only release their
> work so you can use it in your commercial product.  Other developers
> who are not distributing the ExtGWT library may not feel the same way.
>  For example:
>
> A company that modifies open source software released under the GPL is
> not considered to be distributing (GPL v. 2) or conveying (GPL v. 3)
> when it runs the modified software as part of collaborative cloud
> computing. Therefore, the company does not have to contribute the
> modified software back to the community pursuant to the copyleft
> clause of the GPL.
>
> How about cases where the source code is not modified and the
> resulting java script is run over a network.  Are you asserting that a
> javascript application run over a network requires that the source for
> the javascript be made available just because a GPLd library was used
> in generating the javascript that is run in the clouds.
>

Good example! GPL does not require you to distribute your code under
such circumstances, however the Ext team put their own spin on how
their GPL license should be interpreted. Try posting this very
question on the Ext / ExtGWT forum. I guarantee that your post will
not get a public response and if you email them you will get a
response saying that you will require a license even if you are using
their software as part part of collaborative cloud computing which is
totally contradictory to what GPL permits. This is the very reason
they will not respond in the public forum.


> >  Our legal team looked at it and found numerous
> > violations and we did report in on the Ext / ExtGWT forums but the posts
> > were mostly ignored or deleted.
> > SWT. SWT is licensed under EPL and EPL is well documented to be incompatible
> > with GPL. Seehttp://en.wikipedia.org/wiki/Eclipse_Public_License Since we
> > are no longer planning on using ExtGWT, I have no intentions of burning any
> > more time trying to get them to resolve this.
>
> Hmmn, let's think about this.  The reason they changed in the first
> place was they had multiple incompatible licenses.  You assert they
> are intending to violate the EPL.  I suspect they will rewrite that as
> soon as they can.
>

You suspect?? Why do you defend such violations based on speculation
and what you think they will do?

> > If you are going to make such statements or take a bait, do your homework
> > first.
>
> Well you can keep using the ExtJS up to what it is 2.0.2 just like
> they said you could.  They haven't changed that at all.  They are no
> longer offering code under that license though.
>
> I did my homework.  The developers felt that releasing with the type
> of license that would have been beneficial to you, would have allowed
> you to take what they felt was unfair advantage of their work.  As
> developers, they choose (right or wrong for the ultimate success of
> their project) a more restrictive license that they felt was in the
> best interest of their development.
>

Are you part of the Ext / ExtGWT team and speaking on behalf of them?
Or simply mind reading?

> I am sorry you don't agree.  The SWT issue surely needs to be worked
> out but I still fail to see why a developer can not choose to release
> their new work under a different license than they did in the past.  I
> honestly don't consider that dirty.
>

Let me quote this again for you :

"The EPL 1.0 is not compatible with the GPL, and a work created by
combini

Re: GWT serialisation too slow

[David Given]

Chris Lowe wrote:
> Not having a JIT may be really biting you here.  AFAIK GWT
> serialisation makes extensive use of reflection, however there seems
> to be a way to define a custom field serializer (looks similar to
> using Externalizable), but I've not tried this myself:

Oo. I didn't know you could do that --- I'll have a look. Thanks! That 
should work very nicely alongside GWT generators on the client side.

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Re: Good practice: setting style before adding it to a panel!

[Alexander Cherednichenko]

In more or less big project I'd rather create set of widgets, which do
not need addition of the external styles.
So, all styles are applied in constructor.


And then - you just create widget, and add it to a panel.

On Sep 3, 8:14 am, Ed  wrote:
> A oepsss.. good point Ian, thanks... :(
> Mistake in the code examples...
> They should be:
>
> So do something like this:
> Widget wid = new HTML("test");
> SomePanel panel = new SomePanel();
> wid.addStyleName("someStyleName");
> panel.add(wid);
>
> And NOT this:
> Widget wid = new HTML("test");
> SomePanel panel = new SomePanel();
> panel.add(wid);
> wid.addStyleName("someStyleName");
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Re: errors with google plugin for eclipse

[Rajeev Dayal]

Hi,

Are you sure you even need Xerces in your application? Do you reference any
Xerces classes directly in your application code?

If not, you should remove xercesImpl.jar from:

1) jre/lib/ext
2) Your build classpath
3) war/WEB-INF/lib

Then, try and run your app, and tell me what the error is.


Rajeev

On Wed, Sep 2, 2009 at 10:53 AM, pepgrifell  wrote:

>
> hi,
>
> I moved from GWT1.5.3 to GWT1.6/1.7.  I installed google plguin in
> eclipse (Europa) and I did the changes in the directory structure.
> When I try to compile the app. with the pguing (red suitcase) I get
> thsi error:
>
> Loading module 'GemmaModule'
>   [ERROR] Failure while parsing XML
> org.xml.sax.SAXNotRecognizedException:
> http://apache.org/xml/features/nonvalidating/load-external-dtd
>at oracle.xml.jaxp.JXSAXParserFactory.setFeature
> (JXSAXParserFactory.java:128)
>at com.google.gwt.dev.util.xml.ReflectiveParser$Impl.parse
> (ReflectiveParser.java:307)
>at com.google.gwt.dev.util.xml.ReflectiveParser$Impl.access$100
> (ReflectiveParser.java:48)
>at com.google.gwt.dev.util.xml.ReflectiveParser.parse
> (ReflectiveParser.java:385)
>at com.google.gwt.dev.cfg.ModuleDefLoader.nestedLoad
> (ModuleDefLoader.java:243)
>at
> com.google.gwt.dev.cfg.ModuleDefLoader$1.load(ModuleDefLoader.java:
> 155)
>at com.google.gwt.dev.cfg.ModuleDefLoader.doLoadModule
> (ModuleDefLoader.java:269)
>at com.google.gwt.dev.cfg.ModuleDefLoader.loadFromClassPath
> (ModuleDefLoader.java:127)
>at com.google.gwt.dev.Compiler.run(Compiler.java:156)
>at com.google.gwt.dev.Compiler$1.run(Compiler.java:124)
>at
> com.google.gwt.dev.CompileTaskRunner.doRun(CompileTaskRunner.java:
> 88)
>at com.google.gwt.dev.CompileTaskRunner.runWithAppropriateLogger
> (CompileTaskRunner.java:82)
>at com.google.gwt.dev.Compiler.main(Compiler.java:131)
>
> In a post, I read that someone has put xercesImpl.jar inside jdk/jre/
> lib/ext. Then error disappear and compilation is ok.  The problem then
> is that when I deploy the application (EAR) in my application server,
> when I start the server I get an error caused by xercesImpl.jar inside
> jdk/jre/lib/ext.
>
> Apart from this, if I start the emulated host, without the xerces lib
> I get this error:
>
> *
> Unable to process 'file:/D:/branch_eclipse3.3_view/sources/GemmaWeb/
> war/WEB-INF/web.xml' for servlet validation
> [DEBUG] Bootstrap link for command-line module 'GemmaModule'
> [TRACE] Loading module 'GemmaModule'
> Failure while parsing XML
>
> with this error:
>
> [ERROR] Failure while parsing XML
> org.xml.sax.SAXNotRecognizedException:
> http://apache.org/xml/features/nonvalidating/load-external-dtd
>at oracle.xml.jaxp.JXSAXParserFactory.setFeature
> (JXSAXParserFactory.java:128)
>at com.google.gwt.dev.util.xml.ReflectiveParser$Impl.parse
> (ReflectiveParser.java:307)
>at com.google.gwt.dev.util.xml.ReflectiveParser$Impl.access$100
> (ReflectiveParser.java:48)
>at com.google.gwt.dev.util.xml.ReflectiveParser.parse
> (ReflectiveParser.java:385)
>at com.google.gwt.dev.cfg.ModuleDefLoader.nestedLoad
> (ModuleDefLoader.java:243)
>at
> com.google.gwt.dev.cfg.ModuleDefLoader$1.load(ModuleDefLoader.java:
> 155)
>at com.google.gwt.dev.cfg.ModuleDefLoader.doLoadModule
> (ModuleDefLoader.java:269)
>at com.google.gwt.dev.cfg.ModuleDefLoader.loadFromClassPath
> (ModuleDefLoader.java:127)
>at com.google.gwt.dev.HostedModeBase.loadModule(HostedModeBase.java:
> 536)
>at com.google.gwt.dev.HostedMode.loadModule(HostedMode.java:426)
>at com.google.gwt.dev.HostedMode.doStartup(HostedMode.java:351)
>at
> com.google.gwt.dev.HostedModeBase.startUp(HostedModeBase.java:585)
>at com.google.gwt.dev.HostedModeBase.run(HostedModeBase.java:397)
>at com.google.gwt.dev.HostedMode.main(HostedMode.java:232)
>
>
> *
>
> Placing the xerces lib in jdk/jre/lib/ext I go a bit further away:
>
>
> *
> Unable to process 'file:/D:/branch_eclipse3.3_view/sources/GemmaWeb/
> war/WEB-INF/web.xml' for servlet validation
> [DEBUG] Bootstrap link for command-line module 'GemmaModule'
> Validating  tags for module 'GemmaModule'
>   More info: file:/C:/eclipse/configuration/eclipse/plugins/
> com.google.gwt.eclipse.sdkbundle.win32_1.7.0.v200907131018/gwt-
> windows-1.7.0/doc/helpInfo/servletMappings.html
>   Module declares 17  declaration(s), but a valid 'web.xml'
> was not found at 'D:\branch_eclipse3.3_view\sources\GemmaWeb\war\WEB-
> INF\web.xml'
> More info: file:/C:/eclipse/configuration/eclipse/plugins/
> com.google.gwt.eclipse.sdkbundle.

Re: hosted mode trouble

[Jeff Chimene]

On Wed, Sep 2, 2009 at 6:49 PM, sidkdbl07 wrote:
>
> My php file is on a web server configured with PHP5. The address of
> the weather.php5 file is http://www.myserver.com/weather.php5.
>
> I'm debugging my GWT files in Eclipse. The GWT class (see above) makes
> a call to the weather.php5 page with the following line...
>
> RequestBuilder builder = new RequestBuilder(RequestBuilder.GET,
> URL.encode("http://www.myserver.com/weather.php5";));
>
> Honestly, I don't know if I'm using the Jetty server. How do I tell? I
> have no app engine configured in Eclipse.
>
> When I debug my GWT project in Eclipse response.getStatusCode() comes
> back as 0 (zero)
> When I add -noserver to the run configuration, the GWT hosted mode
> browser doesn't display my page... it seems to just sit there empty.
>
> I hope this clears up what I'm trying to accomplish.

Yes, that's the answer I was looking for.

Do you know that in noserver mode you must compile your GWT
application, and deploy it to your server?

http://code.google.com/webtoolkit/doc/1.6/FAQ_DebuggingAndCompiling.html#How_do_I_use_my_own_server_in_hosted_mode_instead_of_GWT%27s

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Re: Hosted mode hangs on localhost...

[Rajeev Dayal]

Hey Pietro,

I think this is a cookie-related problem. I've heard that it can happen when
using ext-GWT (I think), because it sets a large cookie.

Go to your ~/.mozilla directory, and blow away the "eclipse" directory.
Then, try running the app again.


Rajeev

On Thu, Sep 3, 2009 at 6:37 AM, Pietro Marrone wrote:

>
> Hi, I'm using "Google Plugin for Eclipse" to create the "Web
> Application Starter Project".
> Unfortunately the project hangs on hosted mode, exactly only the
> static content appear while the input type and the button are missing.
>
> this is the hosted mode relavant log:
> [DEBUG] Initializing module 'test' for hosted mode
> [SPAM] uri=/test/hosted.html?test
> [SPAM] fields=Host: localhost:50250
>
> User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.12) Gecko/
> 20050920
>
> Accept: text/xml,application/xml,application/xhtml+xml,text/
> html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5
>
> Accept-Language: en-us,en;q=0.5
>
> Accept-Encoding: gzip,deflate
>
> Accept-Charset: UTF-8,*
>
> Keep-Alive: 300
>
> Connection: keep-alive
>
> Referer: http://localhost
> [SPAM] EXCEPTION
> org.mortbay.jetty.HttpException: null
>at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:276)
>at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:205)
>at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:380)
>at org.mortbay.io.nio.SelectChannelEndPoint.run
> (SelectChannelEndPoint.java:395)
>at org.mortbay.thread.QueuedThreadPool$PoolThread.run
> (QueuedThreadPool.java:488):50250/Test.html
>
>
> [SPAM] BAD
>
> The curious is that on the same hosted browser on 127.0.0.1 url works
> fine, and compiled for firefox external browser works for both
> localhost and 127.0.1
>
> Following is my environment:
> Linux Ubuntu 9.04 Desktop
> java-6-sun-1.6.0.14
> gwt-linux-1.7.0
>
> Any suggestion would be appreciate
>
> Regards
>
> >
>

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Re: ext-GWT vs GWT-ext

[Shawn Brown]

I don't think your response attacking me is productive.  I wish you
would stop your personal attacks. Please show me where I attacked you
personally and I will rephrase it (just consider it a bug).

> Great, another clueless response.

Maybe, maybe not.

> There's a huge difference between a platform / app server / Java and a
> library being GPL. A library being GPL means you need you release the source
> of your entire application, simple. An app server or Java being GPL has
> absolutely no effect on the licensing and distribution of your application
> while  using GPL library means that you need to release all your code
> making it unsuitable for use in commercial products.

So according to your analysis ExtGWT is unsuitable for commercial
products.  So what.  The authors of ExtGWT are free to release their
work under any license they choose.  Just because the developers don't
see their work serving your purposes...so what.  A developer can
choose any license they wish for their work.  That is what the truth
is so why are you calling me names?

You somehow believe that ExtGWT developers should only release their
work so you can use it in your commercial product.  Other developers
who are not distributing the ExtGWT library may not feel the same way.
 For example:

A company that modifies open source software released under the GPL is
not considered to be distributing (GPL v. 2) or conveying (GPL v. 3)
when it runs the modified software as part of collaborative cloud
computing. Therefore, the company does not have to contribute the
modified software back to the community pursuant to the copyleft
clause of the GPL.

How about cases where the source code is not modified and the
resulting java script is run over a network.  Are you asserting that a
javascript application run over a network requires that the source for
the javascript be made available just because a GPLd library was used
in generating the javascript that is run in the clouds.

>  Our legal team looked at it and found numerous
> violations and we did report in on the Ext / ExtGWT forums but the posts
> were mostly ignored or deleted.
> SWT. SWT is licensed under EPL and EPL is well documented to be incompatible
> with GPL. See http://en.wikipedia.org/wiki/Eclipse_Public_License  Since we
> are no longer planning on using ExtGWT, I have no intentions of burning any
> more time trying to get them to resolve this.

Hmmn, let's think about this.  The reason they changed in the first
place was they had multiple incompatible licenses.  You assert they
are intending to violate the EPL.  I suspect they will rewrite that as
soon as they can.

> If you are going to make such statements or take a bait, do your homework
> first.

Well you can keep using the ExtJS up to what it is 2.0.2 just like
they said you could.  They haven't changed that at all.  They are no
longer offering code under that license though.

I did my homework.  The developers felt that releasing with the type
of license that would have been beneficial to you, would have allowed
you to take what they felt was unfair advantage of their work.  As
developers, they choose (right or wrong for the ultimate success of
their project) a more restrictive license that they felt was in the
best interest of their development.

I am sorry you don't agree.  The SWT issue surely needs to be worked
out but I still fail to see why a developer can not choose to release
their new work under a different license than they did in the past.  I
honestly don't consider that dirty.

Ok the developers of ExtGWT thought people were taking advantage of
them.  You are angry because you can't take advantage of them.

Call me clueless all you want but I still fail to see how it makes the
ExtGWT developers dirty.   Anyway, thank you for your time.

All the Best,

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Re: send a TextBox to the server-side

[Norman Maurer]

You should not do this.. Send the "plain" String value of the Textbox via RPC.


Bye,
Norman


2009/9/3 osquitranki :
>
> Hi,
> How can send a  TextBox or other widgets to the server-side?
> I wan make a insert in a BBDD with the value of TextBox.
>
> Thanks!!
>
> >
>

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send a TextBox to the server-side

[osquitranki]

Hi,
How can send a  TextBox or other widgets to the server-side?
I wan make a insert in a BBDD with the value of TextBox.

Thanks!!

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Re: GWT serialisation too slow

[Chris Lowe]

Not having a JIT may be really biting you here.  AFAIK GWT
serialisation makes extensive use of reflection, however there seems
to be a way to define a custom field serializer (looks similar to
using Externalizable), but I've not tried this myself:

http://books.google.co.uk/books?id=KXBdajKMJGEC&pg=PA164&lpg=PA164&dq=gwt+custom+field+serializer&source=bl&ots=w5LGABPcqR&sig=JRqZoeXztC7rG9jxftP_6QbbWwM&hl=en&ei=0syfSqSsIIPUjAf77Jm9Dg&sa=X&oi=book_result&ct=result&resnum=9#v=onepage&q=gwt%20custom%20field%20serializer&f=false

Good luck and if you decide to try this approach I'll be interested to
hear how you get on.

Cheers,

Chris.


On Sep 2, 12:04 pm, David Given  wrote:
> Chris Lowe wrote:
>
> [...]
>
> > 500-600 does seem like a lot of objects to be processing in one hit if
> > performance on a low end server is a concern, but then again 20
> > seconds seems like an awfully long time too.
>
> Actually, thinking about it, it's more than that --- probably around
> 1500 objects (500 large objects, but each one contains references to a
> few small just-data objects).
>
> > What's the performance like in your dev environment?  Are your JVM
> > settings the same as those on your target server?
>
> [...]
>  > You can also add a simple filter before the GWT servlet to
>  > give you a very coarse request timing - you can at least then rule out
>  > latencies and bandwidth to your server.
>
> I wish. The target server is a solid-state ARM box -- a SheevaPlug
> (1.2GHz processor, 512MB RAM). Alas, there is no decent JIT for ARM yet,
> so it's running the interpreted JDK. I'll check out VisualVM, but I
> suspect that it's not up to running it.
>
> Annoyingly the machine is perfectly capable of running the actual
> *application*. The actual logic takes a tiny fraction of the time of the
> serialisation.
>
> My development machine is a traditional ix32 box and serialisation takes
> a trivial amount of time. I'll try the trick with the filter to get some
> actual figures.
>
> [...]
>
> > How large are your serialized objects prior to compression?  I think
> > you can quickly test this by disabling gzip compression in FireFox:
>
> >http://forgetmenotes.blogspot.com/2009/05/how-to-disable-gzip-compres...
>
> This just causes the page to turn into garbage --- probably a server
> misconfiguration on my end.
>
> > If the uncompressed size is particularly large then memory and
> > compression time may be the limiting factor.
>
> Looking at the server stats its VM size doesn't appear to change during
> the first serialisation process, indicating that it doesn't want to
> allocate more memory. I have a feeling that memory's not the problem.
>
> > Finally, what kind of objects are you serialising?  Are you attempting
> > to send something like Hibernate objects over the wire (or some other
> > kind of proxied objects) which are causing unexpected database hits?
>
> Nope. The entire DB is being held in-memory. In fact, the way my app
> works is that the server logic calculates the delta needed to be sent to
> the client, constructs a packet of client objects from this, and then
> returns that packet as the result from the RPC call, so the stuff being
> serialised doesn't actually content to the objects in the DB at all. (My
> 400-object delta, the result of the initial DB sync, takes about 4s to
> generate.)
>
> The delta generation uses reflection and annotations to query the DB
> objects for properties that need to be copied into the delta. (The
> client is only allowed to see information from the DB that the user is
> allowed to have.) Simply by adding a cache for Field objects I managed
> to reduce the time taken for the delta generation by a factor of ten, so
> I suspect that reflection is dog slow with this JVM. What does the GWT
> serialisation system use? If it uses reflection, is there any way of
> persuading it to use byte-code generation instead?
>
> --
> ┌─── ｄｇ＠ｃｏｗｌａｒｋ．ｃｏｍ ─http://www.cowlark.com─
> │
> │ "They laughed at Newton. They laughed at Einstein. Of course, they
> │ also laughed at Bozo the Clown." --- Carl Sagan
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Re: GWT, MVP, and nested widgets

[Ian Bambury]

Thanks Jason,
I understand what you are getting at, and I have come across this before,
but hadn't considered using it here.

I'm using this project as an opportunity to learn and to see how 'right' I
can get it. If someone were paying me, then I wouldn't be so fussy, but my
feelings are this:

The MenuItem's presenter (and it's not GWT's MenuItem) should deal with user
gestures from the MenuItemView - I like the simplicity of 'Click->fire
event' and I don't like the idea that MenuItem+MenuItemView would not be a
stand-alone unit and would rely on parent widgets to sort out what is going
on. If the MenuItem presenter isn't going to do anything except pass through
a reference to the MenuItemView, and the MenuItemView is going to hold the
place token field, then why don't I just say to hell with it and get the
MenuPanel to send Labels to the MenuPanelView. It would save all that
faffing about.

I think I'd like to stick with the MenuItem presenter firing an event if I
can, and see if I can come up with a 'politically correct' answer to this.
I'm sure there must be someone out there, or something on the web which can
tell me how to do it, or explain why it's not possible, or give me a better
solution altogether.

If I find something, I'll post it.

Thanks again,

Ian

http://examples.roughian.com


2009/9/3 Jason A. Beranek 

>
> Ian,
>
> Ok, I think I understand what are trying to do. Let me expand a bit on
> the addMenuItem( Object i..); example in something a little less
> abstract. First, I'm assuming your MenuItem is not equivalent to the
> GWT MenuItem class, if it is the solution would be different. Note, I
> don't have a full example so mileage may very. The approach is meant
> to deal with MVP of list type interfaces, where the list items (i.e.,
> MenuItem) bubble events up to a list presenter (i.e. MenuPanel).
>
> The example assumes that instead of each MenuItem reporting
> PlaceChange events, MenuItem selection events are bubbled from the UI
> up to the MenuPanel presenter (through its view) and the MenuPanel
> presenter fires the PlaceChange event. Effectively, a MenuItem's
> display becomes a simple widget within MenuPanel's view and doesn't
> require its own presenter (the presenter's work is handled by
> MenuPanel's presenter).
>
> First, some simple setup:
>
> public class MenuPanel {
>
>  interface Display {
>
>void addMenuItem( String label, String token );
>
>HasSelectionHandlers getMenuItemSelectionButton();
>
>void clearMenuItems();
>  }
>
>  ...
>
> }
>
> The above class shows a possible piece of the MenuPanel display
> interface. I am assuming in the above that a MenuItem takes a label
> that defines how the UI displays the object and the token as you
> describe above for the associate place/location when the item is
> clicked. In this example, the MenuPanel presenter determines the menu
> items required for the current place and calls addMenuItem to tell the
> MenuPanel view the MenuItem widgets to construct in the UI. The
> clearMenuItem method can be used clear the MenuItems to rebuild the
> specific items when the page changes.  Notice that I included another
> Display method called "getMenuItemSelectionButton()", this returns an
> object the MenuPanel presenter can add a handler to so it can detect a
> MenuItem selection event. Here's an example of the bindDisplay method:
>
> void bindDisplay( Display display ) {
>  this.display = display;
>
>  //Listen for a token selection when the user picks a MenuItem
>  display.getMenuItemSelectionButton().addSelectionHandler( new
> SelectionHandler() {
>
>
>public void onSelection( SelectionEvent event ) {
>
>  //Call MenuPanel private method to fire PlaceChangeEvent on
> EventBus, selected item represents the Place token
>  doPlaceChange( new PlaceChangeEvent( event.getSelectedItem() );
>
>  });
>  ...
> }
>
> With the above in place, the MenuPanel view becomes responsible for
> translating the user input  on MenuItems (such as a native Click
> event) into a logical SelectionEvent
>
> The above approach breaks down if the list items require a lot of data
> to build or if the list items require additional logic beyond the
> scope of the containing presenter. As I said in my previous post, this
> approach also suffers from similar interface management problems as
> DTOs.
>
> -Jason
>
> On Sep 2, 7:44 pm, Ian Bambury  wrote:
> > Hi Jason,
> > Thanks for the reply and suggestions.
> >
> > My idea was to have the MenuPanelView have a factory method for
> > MenuItemViews.
> >
> > The MenuPanel presenter has to determine what menu items are required
> > depending on whether the user privileges.
> >
> > I don't really understand how your addMenuItem( Object i ); method
> would
> > work.
> >
> > I can't really have each view just create its own presenter (as a general
> > principle) as far as I can see. What I want to end up with is a menu item
> > which fires a PlaceChange event when it is clicked - for this it needs a
>

Re: Client Locale Auto-detection

[Thomas Broyer]

On 3 sep, 11:30, picosam  wrote:
> Hello,
> I'm not using JSP and I would like to auto-detect the client's
> (browser's) locale and use it. How is it possible to do so?

As I said a few hours ago [1], you can use your web server's ability
to do content negotiation (if available to you), such as MultiViews in
Apache HTTPD [2].

There's also this (untested) trick from almost a year ago [3]

[1] http://groups.google.fr/group/google-web-toolkit/msg/142d1241d86c85c0
[2] http://httpd.apache.org/docs/2.2/content-negotiation.html
[3] http://groups.google.fr/group/Google-Web-Toolkit/msg/e8ca2612aa72cfed
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Re: Does GWT work in Snow Leopard?

[Alex Moffat]

I have another work around that involves changing the
BootStrapPlatform class in gwt-dev-mac.jar to remove the check for
java 1.5. If you do this then you can use java 1.6 with the -d32 flag
and it works fine. More details at http://development.lombardi.com/?p=1012

On Aug 31, 6:35 pm, Jim Douglas  wrote:
> Hi Sumit,
>
> That "workaround" is really not acceptable.  Because Apple considers
> the JVM to be part of the operating system, messing in those
> directories amounts to hacking the O/S.  It's unsafe, unsupported, and
> can -- and probably will -- arbitrarily drop dead at any time with an
> O/S update.
>
> I could easily be missing something important, but it seems like this
> should be a fairly easy thing for you to patch.  My understanding is
> that the issue with GWT is that you need a 32-bit JVM, and in Mac OS X
> Leopard, the only way to get a 32-bit JVM is to use Java 5; the
> Leopard Java 6 is 64-bit-only.  But in Snow Leopard, you can invoke
> Java 6 with "java -d32 ...", and you will get a 32-bit JVM.  Wouldn't
> this work for GWT hosted mode?
>
> Regards,
> Jim.
>
> On Aug 31, 3:58 pm, Sumit Chandel  wrote:
>
>
>
> > Hi all,
> > Hosted mode will be getting an exciting makeover soon, in the form of
> > Out-Of-Process Hosted Mode (OOPHM). With OOPHM, hosted mode runs as a plugin
> > to your favourite browser so that you can debug with the browser most
> > familiar to you using whichever other debugging tools it offers while at the
> > same time debugging your GWT code in hosted mode as you do now.
>
> > OOPHM is currently available in GWT trunk for those who want to give it a
> > try (instructions linked below).
>
> > That said, OOPHM solves the problem of requiring 32-bit libraries that
> > exists in other Mac builds where switching out to Java 1.5 was necessary.
> > That means that OOPHM will also work perfectly well for Snow Leopard, or any
> > other platform using any Java libraries, 32-bit or not.
>
> > Hopefully the workaround Dean linked to above will get you up and running
> > until OOPHM comes out in the next major release. If that workaround doesn't
> > work, please feel free to reply back and let us know.
>
> > Using OOPHM from 
> > trunk:http://code.google.com/p/google-web-toolkit/wiki/UsingOOPHM
>
> > Hope that helps,
> > -Sumit Chandel
>
> > On Mon, Aug 31, 2009 at 11:35 AM, mdwarne  wrote:
>
> > > Hi,
> > > After watching a bunch of Googles GWT videos, and seminar speeches, I
> > > noticed some of the presenters are using Macbooks.
> > > I have to believe they are well aware of this issue.
> > > Mike.
>
> > > On Aug 31, 4:04 am, Michael Shantzis  wrote:
> > > > The question I have is how high it is on google's list to release a
> > > > version of GWT that runs on snow leopard without any modifications.
> > > > I'm working in an environment where I'm testing jboss (which requires
> > > > java 1.6) and have had to jump through hoops to get my server running
> > > > 1.6 and my GWT client running 1.5.
>
> > > > I'm sure they're already aware of this and it's certainly the case
> > > > that all the pieces are out there for them.
>
> > > > I'm patiently waiting!!!
>
> > > > On Aug 29, 9:21 pm, James  wrote:
>
> > > > > Hi... I just wanted to add that along with the suggestions on:
>
> > > > >http://wiki.oneswarm.org/index.php/OS_X_10.6_Snow_Leopard
>
> > > > > I had to rename the "CurrentJDK" symbolic link in
>
> > > > > /System/Library/Frameworks/JavaVM.framework/Versions/
>
> > > > > from 1.6.0 to the (newly added) 1.5.0 because it appears that ant was
> > > > > looking at the "CurrentJDK" for its version not the env.
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Re: GWT, MVP, and nested widgets

[Jason A. Beranek]

Ian,

Ok, I think I understand what are trying to do. Let me expand a bit on
the addMenuItem( Object i..); example in something a little less
abstract. First, I'm assuming your MenuItem is not equivalent to the
GWT MenuItem class, if it is the solution would be different. Note, I
don't have a full example so mileage may very. The approach is meant
to deal with MVP of list type interfaces, where the list items (i.e.,
MenuItem) bubble events up to a list presenter (i.e. MenuPanel).

The example assumes that instead of each MenuItem reporting
PlaceChange events, MenuItem selection events are bubbled from the UI
up to the MenuPanel presenter (through its view) and the MenuPanel
presenter fires the PlaceChange event. Effectively, a MenuItem's
display becomes a simple widget within MenuPanel's view and doesn't
require its own presenter (the presenter's work is handled by
MenuPanel's presenter).

First, some simple setup:

public class MenuPanel {

  interface Display {

void addMenuItem( String label, String token );

HasSelectionHandlers getMenuItemSelectionButton();

void clearMenuItems();
  }

  ...

}

The above class shows a possible piece of the MenuPanel display
interface. I am assuming in the above that a MenuItem takes a label
that defines how the UI displays the object and the token as you
describe above for the associate place/location when the item is
clicked. In this example, the MenuPanel presenter determines the menu
items required for the current place and calls addMenuItem to tell the
MenuPanel view the MenuItem widgets to construct in the UI. The
clearMenuItem method can be used clear the MenuItems to rebuild the
specific items when the page changes.  Notice that I included another
Display method called "getMenuItemSelectionButton()", this returns an
object the MenuPanel presenter can add a handler to so it can detect a
MenuItem selection event. Here's an example of the bindDisplay method:

void bindDisplay( Display display ) {
  this.display = display;

  //Listen for a token selection when the user picks a MenuItem
  display.getMenuItemSelectionButton().addSelectionHandler( new
SelectionHandler() {


public void onSelection( SelectionEvent event ) {

  //Call MenuPanel private method to fire PlaceChangeEvent on
EventBus, selected item represents the Place token
  doPlaceChange( new PlaceChangeEvent( event.getSelectedItem() );

  });
  ...
}

With the above in place, the MenuPanel view becomes responsible for
translating the user input  on MenuItems (such as a native Click
event) into a logical SelectionEvent

The above approach breaks down if the list items require a lot of data
to build or if the list items require additional logic beyond the
scope of the containing presenter. As I said in my previous post, this
approach also suffers from similar interface management problems as
DTOs.

-Jason

On Sep 2, 7:44 pm, Ian Bambury  wrote:
> Hi Jason,
> Thanks for the reply and suggestions.
>
> My idea was to have the MenuPanelView have a factory method for
> MenuItemViews.
>
> The MenuPanel presenter has to determine what menu items are required
> depending on whether the user privileges.
>
> I don't really understand how your addMenuItem( Object i ); method would
> work.
>
> I can't really have each view just create its own presenter (as a general
> principle) as far as I can see. What I want to end up with is a menu item
> which fires a PlaceChange event when it is clicked - for this it needs a
> token, for example GWT/Panels/SimplePanel (where GWT is an item in the
> top-level menu, Panels is an item in the GWT menu, and SimplePanel is a
> final page of information to be displayed).
>
> Each menu would set itself up if required by listening for a PlaceChange
> event, and if a page recognised it was needed, it would display itself.
>
> This, though, means that the MenuPanel needs to do a bit of setting up for
> the menu items and associated pages.
>
> It isn't actually quite the mess it probably sounds. All the hard work is
> done in a hierarchy of a few abstract classes, so to create a new menu, all
> you really need to is specify the menu text and the page it refers to, But I
> do get the feeling I'm stretching the MVP pattern well out of shape in order
> to get it all to work.
>
> Ian
>
> http://examples.roughian.com
>
> 2009/9/3 Jason A. Beranek 
>
>
>
> > Ian,
>
> > When you mention your current solution fetches the MenuItem view from
> > the MenuPanel view, do you mean the MenuItem view(s) are already in
> > the MenuPanel view or do you mean the MenuPanel view acts as a factory
> > for MenuItem views? I have been experimenting a bit with the former,
> > though I imagine the latter would work. One approach I've also tried
> > for list based structures that might work for your list of Menu Items
> > is to make a function on the display interface to add the data
> > elements to build the MenuItem view from primitives:
>
> > interface MenuIPanelView {
> >  void addM

Re: rpc serialization problem

[Chris Lowe]

Are the List fields on your objects specified in terms of interfaces?
GWT RPC needs to know as much about your objects at compile time,
could you try using a concrete class instead - preferably ArrayList?

It sounds like you're trying to serialize ORM objects directly, is
that right?  I don't know much about Data Nucleus and whether or not
it dynamically enhances entity objects under its control with proxies
etc.  My experience is with Hibernate which usually does add something
to a class, so serializing entities directly is strongly discouraged -
either the entity objects have to be filtered of the Hibernate
"extras", or values copied into DTOs.

On Sep 2, 10:35 am, "jvoro...@googlemail.com"
 wrote:
> Hallo,
> i have the same problem.
> List (GWT) can not be used in DataNuceleus.
>
> Can every one help pleas!
> THX
>
> On 5 Aug., 04:52, mike  wrote:
>
>
>
> > I have a simple one-to-many betwen two entities.  The parent entity
> > uses List to contain the child entities.  I am able to persist these
> > entities in the datastore without problems.
>
> > However, when reading a root entity at the server, I get:
>
> > rpc.SerializationException: Type 'org.datanucleus.sco.backed.List' was
> > not included in the set of types  which can be serialized...
>
> > The entities are successfully read from the datastore, but something
> > in Datanucleus doesn't build the List correctly.
>
> > Has anyone found a workaround for this serialization problem.
>
> > Thanks
>
> > GWT 1.7 GAE 1.2.2
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Re: ext-GWT vs GWT-ext

[Martin Kraus]

Great, another clueless response.

um, you are a *Ext* fanboy - no?

There's a huge difference between a platform / app server / Java and a
library being GPL. A library being GPL means you need you release the source
of your entire application, simple. An app server or Java being GPL has
absolutely no effect on the licensing and distribution of your application
while  using  GPL library means that you need to release all your code
making it unsuitable for use in commercial products. btw where did you read
that Java bait and switched to GPL?

We were considering using products from the Ext family a long time ago but
avoid it like the plague now. Our legal team looked at it and found numerous
violations and we did report in on the Ext / ExtGWT forums but the posts
were mostly ignored or deleted. For example ExtGWT still uses some code from
SWT. SWT is licensed under EPL and EPL is well documented to be incompatible
with GPL. See http://en.wikipedia.org/wiki/Eclipse_Public_License  Since we
are no longer planning on using ExtGWT, I have no intentions of burning any
more time trying to get them to resolve this.

If you are going to make such statements or take a bait, do your homework
first.

To the original poster : we have decided to go with GWT and GWT incubator
widgets and have had excellent results.

On Thu, Sep 3, 2009 at 5:44 AM, Shawn Brown wrote:

>
> Hi,
>
> > ExtGWT --which
> > contains the JS underlying GWTExt - upto 2.0.2-- did a dirty move a
> > year or so ago when they changed their licensing model; as a result
> > there was a falling out between the two projects.
>
> Um, ExtJS was underlying GWTExt - no?
> ExtJS went GPL - no?
>
> I guess if you are of a certain ideology then you prefer a BSD type
> license.  Calling moves to the GPL dirty are flame bait I think.
>
> Sun went GPL with Java.  Why don't you stop programming with Java?
>
> Shawn
>
> >
>

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Re: Good practice: setting style before adding it to a panel!

[Ed]

A oepsss.. good point Ian, thanks... :(
Mistake in the code examples...
They should be:

So do something like this:
Widget wid = new HTML("test");
SomePanel panel = new SomePanel();
wid.addStyleName("someStyleName");
panel.add(wid);

And NOT this:
Widget wid = new HTML("test");
SomePanel panel = new SomePanel();
panel.add(wid);
wid.addStyleName("someStyleName");

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Re: Good practice: setting style before adding it to a panel!

[Ian Bambury]

But there is no interaction between 'wid' and 'panel' in the code you gave,
you just create a flowpanel. If that affects how some other part of your app
is displayed, there is something wrong.
Ian

http://examples.roughian.com


2009/9/3 Ed 

>
> That's what I am explaining above...
>
> Note: the Flow Panel is just a panel and I assume that, in this case,
> the dimensions are used during the inser/add action in the panel.
>
> However, maybe I could have better taken another Panel to not confuse
> it with the current functionality of the FlowPanel, that is: no
> animation, simple insert/add/remove (at this moment)...
>
> I my case: I wrap many panels of gwt, to add additional functionality
> in a transparent way, like animation..
>
> The point is: you are in trouble if the style information is used
> during the add/insert/remove action in the panel...
>
>
> >
>

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Re: Good practice: setting style before adding it to a panel!

[Ed]

(adding to my last sentence):
 ... before you set the style info on the widget...
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Re: Good practice: setting style before adding it to a panel!

[Ed]

That's what I am explaining above...

Note: the Flow Panel is just a panel and I assume that, in this case,
the dimensions are used during the inser/add action in the panel.

However, maybe I could have better taken another Panel to not confuse
it with the current functionality of the FlowPanel, that is: no
animation, simple insert/add/remove (at this moment)...

I my case: I wrap many panels of gwt, to add additional functionality
in a transparent way, like animation..

The point is: you are in trouble if the style information is used
during the add/insert/remove action in the panel...


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Re: div layout

[Ian Bambury]

Please don't shout, I've got a hangover.
Yours is a (basic) HTML/CSS question and this is a GWT group. That, like
shouting at us, will also reduce your chance of getting a direct answer from
the people here.

Here's an indirect answer: try searching for 'floatutorial', an excellent
resource if you need to learn this kind of thing.

Ian

http://examples.roughian.com

2009/9/3 ben fenster 

>
> HOW CAN I USE THE HTMLPANEL WIDGET TO CREATE 2 SIDE BY SIDE DIV TAGS
> WHICH ONE HAS 200PX WIDTH AND THE OTHER WIDTH USES THE REST OF THE
> PAGE WIDTH
> >
>

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Re: Iframe = multithreading ???

[ben fenster]

ok  thats sounds right but if thats true can i access static classes
in the entrypoint module from a seperate module loaded in an iframe
(that ofcours exists in the first module) ?

On 3 ספטמבר, 03:00, David Given  wrote:
> ben fenster wrote:
> > your answear is based on your knolage in js but i need an answear
> > based on actual in depth knowlage in how browser work since each
> > iframe act as an independed wep page and loaded sepertly
>
> No, you misunderstand --- if your code can see an iframe, that iframe
> must be part of the same Javascript VM as your code, and therefore must
> be part of the same thread. The spec requires it.
>
> Iframes aren't as independent as you think.
>
> --
> ┌─── ｄｇ＠ｃｏｗｌａｒｋ．ｃｏｍ ─http://www.cowlark.com─
> │
> │ "They laughed at Newton. They laughed at Einstein. Of course, they
> │ also laughed at Bozo the Clown." --- Carl Sagan
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serialization

[ben fenster]

what is  preformence wize the best
Json Serializing lib
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Re: Good practice: setting style before adding it to a panel!

[Ian Bambury]

I can't see how creating a flowpanel between creating a widget and adding a
style would make any difference whatsoever.
Ian

http://examples.roughian.com


2009/9/3 Ed 

>
> He All,
>
> I would like to share the following good GWT programing practice (It
> just cost me to solve a tinny bug because of this):
> -- Set any style name/attribute just after a widget is created, before
> it's added to any panel!!!
>
> So do something like this:
> Widget wid = new HTML("test");
> wid.addStyleName("someStyleName");
> FlowPanel panel = new FlowPanel();
>
> And NOT this:
> Widget wid = new HTML("test");
> FlowPanel panel = new FlowPanel(); // or some other panel
> wid.addStyleName("someStyleName");
>
>
> Wy?
> Suppose the panel is doing some sort of animation to add/insert the
> widget, like a slide/move, etc... animation. Then you could be in
> trouble in case the style name contains dimension information (width/
> height) or other stuff that is used in your animation.. The dimensions
> that are retrieved by the animation that is contained in the "flow
> panel" will then be incorrect, as the style isn't set yet...
> This can lead to strange behavior depending on when the style is set,
> and what animation you use.. I may case it also was different in FF
> and IE..
> In my case: I perform a slide in/out animation before the style name
> was set, such that the widget looked much bigger during the slide
> animation in IE (not FF) and all of a sudden turned to normal again
> after doing "something" else on the screen after the animation was
> complete.
>
> I put a little check in my animations now and check the style
> information that I need at the start and finish of the animation, as
> they should be the same, which wasn't in my case.
>
> So in general it's a good pratice to always set the style name/
> attributes before adding your widget to any panel. Maybe you don't use
> animation, but you never know what will come in the future...  And
> then al of a sudden you get these strange bugs after an upgrade of
> your own software or GWT.
>
>
> BTW: I noticed that the framework gwt-fx performs the slide animation
> in a deferred command, maybe for this reason
>
>
>
> >
>

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Re: gwt application does not run ie7

[Ian Bambury]

Without seeing the code, it's hard to tell. Personally, I'd level all the
browsers and then see what you get. It has to be margin or padding on
something, or some blank div that gets displayed in IE and not elsewhere.
Ian

http://examples.roughian.com


2009/9/3 aftershock 

>
> Looking at the IE version, it looks like you have a version which
> works and not the version that does not work.
>
> Do you mind if I ask you something else?
>
> In IE,I can see a wide line before the embedded application. I tried
> to make it disappear but I could not se far.
> How can I remove that?
>
> -I tried changing the tag of embedding application from div to span.no
> effect.
> -I tried display: block-inline style. no effect.
> -I tried to set padding and margin of body to 0. no effect.
>
>
> >
>

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Client Locale Auto-detection

[picosam]

Hello,
I'm not using JSP and I would like to auto-detect the client's
(browser's) locale and use it. How is it possible to do so?
Thank you,
Sammy

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MSIE7 Syntax Error using large GWT app

[Pieter Breed]

Hi,

My company uses the GWT toolkit (1.5.3) for one of our products. One
of our clients (a corporate) still uses a pre-WinXP-SP3 copy of MSIE7
which causes this bug to appear. (http://code.google.com/p/google-web-
toolkit/issues/detail?id=1440)

I've checked our jars, they do include the patch for this bug, but we
are still getting this error. (on msie7 we get a syntax error on line
1 as the application loads)

Is this a related but different bug? Is this maybe the same bug in a
different guise? Does anybody have advice for us in this regard?

Regards,
Pieter

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Re: Need Help in setting up GWT

[Satya]

Thank you very much. I am going thru these docs and links for
understanding

On Sep 3, 1:16 am, Rahul  wrote:
> HiSatya,
>
> Here are some tutorials which tell you step by step how to work with
> GWT
>
> http://code.google.com/webtoolkit/tutorials/1.6/create.html
>
> also you would also like this, these are some basic tutorials abt gwt
>
> http://examples.roughian.com/#Home
>
> On Sep 2, 4:10 am,Satya wrote:
>
> > Hello All,
>
> > My need is to develop a web application with rich UI and deploy onto
> > externat server, so i decided to use GWT.
> > Can you let me understand in setting up "dynamic web project" in
> > eclipse?
>
> > I tried setting up project using "WebAppCreator.cmd" from gwt
> > distribution but i cannot deploy that onto eclipse-integrated-tomcat-
> > server. I created "dynamic web project" from eclipse but that does not
> > run on hosted mode.
> > I also created project by using google plugin, but no success on
> > running on integrated-tomcat, but i can run this as
> > "GoogleWebApplication" .
>
> > How do I create a project in eclipse and proceed?
>
> > Regards,
> >Satya

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[ANNOUNCE] HtmlUnit 2.6, a headless java browser, released

[Ahmed Ashour]

A new release of the Open Source java GUI-Less browser is available,
which allows high-level manipulation of web pages, such as filling
forms, clicking links, accessing attributes and values of specific
elements within the pages, you do not have to create lower-level
requests of TCP/IP or HTTP, but just getPage(url), find a hyperlink,
click() and you have all the HTML, JavaScript, and Ajax are
automatically processed.

The most common use of HtmlUnit is test automation of web pages (even
with complex JavaScript libraries, like GWT and jQuery), but it can
also be used for web scraping, or downloading website content.

The main enhancements of this release:
- Use cache for all kinds of (cacheable) content
- Fix many issues with (de)serialization
- Add a mechanism to save complete page along with images
- Add support for Proxy Auto-Config
- Better support for XHTML pages
- And as usual, various bug fixes

You can find more information in http://htmlunit.sourceforge.net/, the
development team is looking forward to getting your feedback.
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Hosted mode hangs on localhost...

[Pietro Marrone]

Hi, I'm using "Google Plugin for Eclipse" to create the "Web
Application Starter Project".
Unfortunately the project hangs on hosted mode, exactly only the
static content appear while the input type and the button are missing.

this is the hosted mode relavant log:
[DEBUG] Initializing module 'test' for hosted mode
[SPAM] uri=/test/hosted.html?test
[SPAM] fields=Host: localhost:50250

User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.12) Gecko/
20050920

Accept: text/xml,application/xml,application/xhtml+xml,text/
html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5

Accept-Language: en-us,en;q=0.5

Accept-Encoding: gzip,deflate

Accept-Charset: UTF-8,*

Keep-Alive: 300

Connection: keep-alive

Referer: http://localhost
[SPAM] EXCEPTION
org.mortbay.jetty.HttpException: null
at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:276)
at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:205)
at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:380)
at org.mortbay.io.nio.SelectChannelEndPoint.run
(SelectChannelEndPoint.java:395)
at org.mortbay.thread.QueuedThreadPool$PoolThread.run
(QueuedThreadPool.java:488):50250/Test.html


[SPAM] BAD

The curious is that on the same hosted browser on 127.0.0.1 url works
fine, and compiled for firefox external browser works for both
localhost and 127.0.1

Following is my environment:
Linux Ubuntu 9.04 Desktop
java-6-sun-1.6.0.14
gwt-linux-1.7.0

Any suggestion would be appreciate

Regards

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Good practice: setting style before adding it to a panel!

[Ed]

He All,

I would like to share the following good GWT programing practice (It
just cost me to solve a tinny bug because of this):
-- Set any style name/attribute just after a widget is created, before
it's added to any panel!!!

So do something like this:
Widget wid = new HTML("test");
wid.addStyleName("someStyleName");
FlowPanel panel = new FlowPanel();

And NOT this:
Widget wid = new HTML("test");
FlowPanel panel = new FlowPanel(); // or some other panel
wid.addStyleName("someStyleName");


Wy?
Suppose the panel is doing some sort of animation to add/insert the
widget, like a slide/move, etc... animation. Then you could be in
trouble in case the style name contains dimension information (width/
height) or other stuff that is used in your animation.. The dimensions
that are retrieved by the animation that is contained in the "flow
panel" will then be incorrect, as the style isn't set yet...
This can lead to strange behavior depending on when the style is set,
and what animation you use.. I may case it also was different in FF
and IE..
In my case: I perform a slide in/out animation before the style name
was set, such that the widget looked much bigger during the slide
animation in IE (not FF) and all of a sudden turned to normal again
after doing "something" else on the screen after the animation was
complete.

I put a little check in my animations now and check the style
information that I need at the start and finish of the animation, as
they should be the same, which wasn't in my case.

So in general it's a good pratice to always set the style name/
attributes before adding your widget to any panel. Maybe you don't use
animation, but you never know what will come in the future...  And
then al of a sudden you get these strange bugs after an upgrade of
your own software or GWT.


BTW: I noticed that the framework gwt-fx performs the slide animation
in a deferred command, maybe for this reason



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Re: Iframe = multithreading ???

[David Given]

ben fenster wrote:
> your answear is based on your knolage in js but i need an answear
> based on actual in depth knowlage in how browser work since each
> iframe act as an independed wep page and loaded sepertly

No, you misunderstand --- if your code can see an iframe, that iframe 
must be part of the same Javascript VM as your code, and therefore must 
be part of the same thread. The spec requires it.

Iframes aren't as independent as you think.

-- 
┌─── ｄｇ＠ｃｏｗｌａｒｋ．ｃｏｍ ─ http://www.cowlark.com ─
│
│ "They laughed at Newton. They laughed at Einstein. Of course, they
│ also laughed at Bozo the Clown." --- Carl Sagan

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Re: ext-GWT vs GWT-ext

[Shawn Brown]

Hi,

> ExtGWT --which
> contains the JS underlying GWTExt - upto 2.0.2-- did a dirty move a
> year or so ago when they changed their licensing model; as a result
> there was a falling out between the two projects.

Um, ExtJS was underlying GWTExt - no?
ExtJS went GPL - no?

I guess if you are of a certain ideology then you prefer a BSD type
license.  Calling moves to the GPL dirty are flame bait I think.

Sun went GPL with Java.  Why don't you stop programming with Java?

Shawn

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div layout

[ben fenster]

HOW CAN I USE THE HTMLPANEL WIDGET TO CREATE 2 SIDE BY SIDE DIV TAGS
WHICH ONE HAS 200PX WIDTH AND THE OTHER WIDTH USES THE REST OF THE
PAGE WIDTH
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Re: How can I center arbitrary content on a fixed-size button?

[Jim Douglas]

I've got a tentative solution, but it's not quite the pure css
approach I was hoping for:

(1) Define GWT's html-face style as:

.html-face
{
display: table;
height: 100%;
margin: auto;
}

(2) Wrap the user's text inside:



user-defined-text



Is there a better/simpler approach that I'm missing?

On Sep 2, 6:27 pm, Jim Douglas  wrote:
> I'm getting hung up on something that seems like it ought to be
> trivial.  I've got a fixed-size GWT Button and I need to render it
> (preferably using just static CSS rules) such that any arbitrary text
> or HTML content a user throws at it is centered both horizontally
> (that part's easy) and vertically (that part is driving me around the
> bend).
>
> In Java, AbstractButton.setVerticalAlignment(CENTER) just happens; you
> don't have to think about it.  But I can't seem to find any way to
> achieve this same effect on a GWT Button.
>
> Horizontal alignment is trivial:  text-align: center.  But I've spent
> a couple of days trying increasingly bizarre strategies 
> (http://www.google.com/search?q=css+vertical+align) trying to achieve vertical
> alignment, with no success to speak of.
>
> Has anyone else struggled with this problem (or solved it)?
>
> Regards,
> Jim.
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F1 key press event on Panel

[vruddhi shah]

Hello,

I want an Absolute Panel can fire event on keyboard F1 key. I have used
sinkEvents(Event.KEYEVENTS) and implements  method as follows :

public void onBrowserEvent(Event event)
{
   System.out.println("keycode"+event.getKeyCode());
}

But, It doesn't work. Can any one help me out?

-- 
Vruddhi Shah
Pyther Innovations Pvt. Ltd.
Land line: 91 78 40074893
617, Devpath Complex
C.G. Road, Ahmedabad
India
www.gwt4enterprise.com

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Re: errors with google plugin for eclipse

[pepgrifell]

I found the solution to the first problem :

**
Failure while parsing XML org.xml.sax.SAXNotRecognizedException:
http://apache.org/xml/features/nonvalidating/load-external-dtd
at oracle.xml.jaxp.JXSAXParserFactory.setFeature
(JXSAXParserFactory.java:128)
**

When compiling the project with the plugin, I added this lines in VM
arguments:

-Dbootclasspathc:/path_to_xerces_jar/xercesImpl.jar
-Dorg.xml.sax.driver=org.apache.xerces.parsers.SAXParser
-
Djavax.xml.parsers.SAXParserFactory=org.apache.xerces.jaxp.SAXParserFactoryImpl
-
Djavax.xml.parsers.TransformerFactory=org.apache.xalan.processor.TransformerFactoryImpl
-
Djavax.xml.transform.TransformerFactory=org.apache.xalan.processor.TransformerFactoryImpl

So now I can start OC4J without errors. Probably I will have to do the
same when starting the emulated host. Now I will go to check the next
problem :

*
Module declares 17  declaration(s), but a valid 'web.xml' was
not found at 'D:\branch_eclipse3.3_view\sources\GemmaWeb\war\WEB- INF
\web.xml'
**


On 2 sep, 16:53, pepgrifell  wrote:
> hi,
>
> I moved from GWT1.5.3 to GWT1.6/1.7.  I installed google plguin in
> eclipse (Europa) and I did the changes in the directory structure.
> When I try to compile the app. with the pguing (red suitcase) I get
> thsi error:
>
> Loading module 'GemmaModule'
>    [ERROR] Failure while parsing XML
> org.xml.sax.SAXNotRecognizedException:http://apache.org/xml/features/nonvalidating/load-external-dtd
>         at oracle.xml.jaxp.JXSAXParserFactory.setFeature
> (JXSAXParserFactory.java:128)
>         at com.google.gwt.dev.util.xml.ReflectiveParser$Impl.parse
> (ReflectiveParser.java:307)
>         at com.google.gwt.dev.util.xml.ReflectiveParser$Impl.access$100
> (ReflectiveParser.java:48)
>         at com.google.gwt.dev.util.xml.ReflectiveParser.parse
> (ReflectiveParser.java:385)
>         at com.google.gwt.dev.cfg.ModuleDefLoader.nestedLoad
> (ModuleDefLoader.java:243)
>         at com.google.gwt.dev.cfg.ModuleDefLoader$1.load(ModuleDefLoader.java:
> 155)
>         at com.google.gwt.dev.cfg.ModuleDefLoader.doLoadModule
> (ModuleDefLoader.java:269)
>         at com.google.gwt.dev.cfg.ModuleDefLoader.loadFromClassPath
> (ModuleDefLoader.java:127)
>         at com.google.gwt.dev.Compiler.run(Compiler.java:156)
>         at com.google.gwt.dev.Compiler$1.run(Compiler.java:124)
>         at com.google.gwt.dev.CompileTaskRunner.doRun(CompileTaskRunner.java:
> 88)
>         at com.google.gwt.dev.CompileTaskRunner.runWithAppropriateLogger
> (CompileTaskRunner.java:82)
>         at com.google.gwt.dev.Compiler.main(Compiler.java:131)
>
> In a post, I read that someone has put xercesImpl.jar inside jdk/jre/
> lib/ext. Then error disappear and compilation is ok.  The problem then
> is that when I deploy the application (EAR) in my application server,
> when I start the server I get an error caused by xercesImpl.jar inside
> jdk/jre/lib/ext.
>
> Apart from this, if I start the emulated host, without the xerces lib
> I get this error:
> ***­**
> Unable to process 'file:/D:/branch_eclipse3.3_view/sources/GemmaWeb/
> war/WEB-INF/web.xml' for servlet validation
> [DEBUG] Bootstrap link for command-line module 'GemmaModule'
> [TRACE] Loading module 'GemmaModule'
> Failure while parsing XML
>
> with this error:
>
> [ERROR] Failure while parsing XML
> org.xml.sax.SAXNotRecognizedException:http://apache.org/xml/features/nonvalidating/load-external-dtd
>         at oracle.xml.jaxp.JXSAXParserFactory.setFeature
> (JXSAXParserFactory.java:128)
>         at com.google.gwt.dev.util.xml.ReflectiveParser$Impl.parse
> (ReflectiveParser.java:307)
>         at com.google.gwt.dev.util.xml.ReflectiveParser$Impl.access$100
> (ReflectiveParser.java:48)
>         at com.google.gwt.dev.util.xml.ReflectiveParser.parse
> (ReflectiveParser.java:385)
>         at com.google.gwt.dev.cfg.ModuleDefLoader.nestedLoad
> (ModuleDefLoader.java:243)
>         at com.google.gwt.dev.cfg.ModuleDefLoader$1.load(ModuleDefLoader.java:
> 155)
>         at com.google.gwt.dev.cfg.ModuleDefLoader.doLoadModule
> (ModuleDefLoader.java:269)
>         at com.google.gwt.dev.cfg.ModuleDefLoader.loadFromClassPath
> (ModuleDefLoader.java:127)
>         at com.google.gwt.dev.HostedModeBa

Forwarding to TomCat

[Paul Grenyer]

Hi All

This may be entirely the wrong place to ask this question, but I'm
hoping someone here has done something similar. If anyone objects to
this I am more than prepared to desist.

What I want to do is this:

1. Host Apache or IIS on an externally facing server and have it serve
static things like images and (GWT) JavaScript.
2. have IIS/Apache forward requests for HTML pages (which are served
up via Spring MVC on TomCat), RPC calls and webservice requests to
TomCat on an internal machine (presumably through a firewall with the
appropriate port open).

This will give me a number of things:

1. Better security
2. Move the serving of the "big stuff" from TomCat to Apache/IIS

Any help greatly appreciated.

-- 
Thanks
Paul

Paul Grenyer
e: paul.gren...@gmail.com
b: paulgrenyer.blogspot.com

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Re: Download file

[chandrahas koyari]

Yes you have to create a GWT hyperlink and point it to the resource.

On Sep 2, 6:28 pm, ALEXEI BARBONI  wrote:
> Hi chandrahas, thanks for the answer
>
> I've been out from work last week.
>
> Now I have to create a way to the user of my application make a download of
> a file that is in the server.
> I know the exactly location of the file and its name.
>
> But I don't understand how to create a link (would be a GWT Hyperlink) that
> point to my file. I think this way is easier than to create a servlet.
>
> Could anybody give me a little help about?
>
> thank you guys again
>
> 2009/8/25 chandrahas koyari 
>
>
>
> > There are two general methods to achieve it
> > 1. Create a link which directly point to that resource (file)
> > 2. Point to a Servlet which respond with a file (by using
> > getResourceAsFile() )
>
> > On Aug 25, 2:50 am, Alexei Telles  wrote:
> > > Hi...
>
> > > I need to create a link in my web application where the user will
> > > download a file that is in my server.
>
> > > I was searching for something in the web, but I could not find
> > > something about.
>
> > > Is there any GWT tool that allow me to develop a link in my
> > > application to make a download from the server to the client?
>
> > > Or another way that you guys use to do?
>
> > > Thanks again
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Re: MySQL Connection

[Lothar Kimmeringer]

[quoting repaired]

GumbyGWTBeginner schrieb:
> On Sep 3, 10:36 am, Isaac Truett  wrote:
>> Stephan,
>>
>> You need to make a request to the server for the data. The server can
>> connect to the database and return the results to the browser. If your
>> server is running Java, then GWT RPC is a good method. For non-Java
>> servers, JSON could work for you.
>>
>> See:http://code.google.com/webtoolkit/doc/1.6/DevGuideServerCommunication...
>>
>> Hope that helps.
>
> Will this (what is documented on that link) work if I runn on my local
> PC?

Sure, the GWT development package comes with an integrated
HTTP-server, that is used for the hosted mode. If you want
to use it in productive use, you need to install your own
HTTP-server, e.g. Tomcat. The server must be able to run
so called Java Web Applications (that in general come as
"war-file").

> Do I have actually host the MySQL DB on a webserver?

Not necessarily, MySQL allows to be installed on a different
machine that is connected via the network using JDBC.


Regards, Lothar

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Re: Custom boot-strap / setting locale from request headers

[Thomas Broyer]

On 2 sep, 23:50, mayop100  wrote:
> Hey Guys -
>
> There's a section on this 
> page:http://code.google.com/webtoolkit/tutorials/1.6/i18n.html
>
> That suggests that there's an easy way to set the user's locale by
> parsing the Accept-Language header in the user's request. I want to
> have my GWT app always display the locale specified in the client's
> Accept-Language header - not the locale specified in the host page. I
> think I should be able to write a servlet to do this... and it sounds
> like this is possible based on that page, but I don't know enough
> about the bootstrap process to actually make this work. Has anyone
> else done this?

To make it simple, we're using Apache's MultiViews with several copies
(not copies actually, as we have some "static HTML" that needs to be
translated): index.html.fr, index.html.en, etc.
And each page "loads" the appropriate locale using a 
(see 
http://code.google.com/webtoolkit/doc/1.6/DevGuideI18nAndA11y.html#DevGuideSpecifyingLocale
)

but you could achieve the same using some servlet or JSP as your host
page, and generating the appropriate ; there's something about
it in the GWT Incubator IIRC: 
http://code.google.com/p/google-web-toolkit-incubator

> A more general question is - is there a way I could write a servlet
> that pulls the client's browser type and locale from the request
> headers and returns the appropriate GWT permutation? This would let me
> skip the entire .nocache.js bootstrap process and speed up
> initialization. I feel like this shouldn't be too hard, but I don't
> really know what setup goes on in the nocache.js bootstrap file. Has
> anyone done this before? Can this be done? or is there essential setup
> that occurs in the bootstrap file?

the *.nocache.js also loads the stylesheet and javascript
dependencies, so it's a bit more than just selecting the appropriate
permutation.
Also, although you could determine the "browser type" on the server
side, you would have to make a choice when it comes to IE8, as it
could use either the ie6 or ie8 permutation depending on the
"documentMode".
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Re: javax.persistence package

[Dalla]

If you have complex objects that you need to map, you might need to
write configuration files.
To be honest, I don´t know what´s meant by "complex objects", I don´t
have any configuration files at all
for my Dozer implementation, and it works like a charm, even when
mapping nested objects.

I have my DTOs on the client side aswell, by I´m not the one to answer
your security question.
Our application is only used inhouse.


On 2 Sep, 19:38, Tolga Özdemir  wrote:
> Hi, hmm it sounds good..
> I downloaded a sample gwt project with dozer (the music store)..When I look
> at the file structure, I noticed that this sample contains all mapping files
> and DTOs.. Including I have to write a dozer map file..
>
> In my own sample project I did the same putting my DTOs into the client side
> directly without dozer map but it still works...
>
> I wonder what dozer gives me as an advantage - it seems it does not
> guarantee writing less config files? is it a security issue that we do not
> to put DTOs in client side in dozer project?
>
> Thanks,
>
> Tolga
>
>
>
>
>
> On Wed, Sep 2, 2009 at 4:54 PM, Dalla  wrote:
>
> > Yes, exactly.
>
> > This is pretty much it:
>
> > DozerBeanMapper mapper = new DozerBeanMapper();
>
> > //This is a mapping from EJB to POJO
> > //SimpleHeader is my POJO, purchaseOrderHeader is an instance of the
> > corresponding EJB.
> > SimpleHeader header = (SimpleHeader) mapper.map(purchaseOrderHeader,
> > SimpleHeader.class);
>
> > //Mapping from POJO back to EJB looks exactly the same
> > //Here, Arrivals is the EJB, arrivaldata is an instance of the
> > corresponding POJO
> > Arrivals arrivals = (Arrivals) mapper.map(arrivaldata,
> > Arrivals.class);
>
> > So if you already have EJBs and want to use Dozer, all you have to do
> > is basically make a copy of your EJB, remove all annotations
> > and imports of javax.* packages, create a default no argument
> > constructor, and make the new POJO implement IsSerializable.
>
> > On 2 Sep, 14:19, Tolga Özdemir  wrote:
> > > hmm.. you mean your EJB classes - your DTOs - are in serverside and by
> > using
> > > dozer.. you automatically translate them and use in client side, right?
>
> > > On Wed, Sep 2, 2009 at 3:03 PM, Dalla  wrote:
>
> > > > Correct, not on the client side anyway.
> > > > GWT does not emulate  javax.persistence.*, importing that package on
> > > > the client side would cause errors when compiling.
> > > > However you COULD use EJB3, if you keep the mappings in a separate
> > > > file. But´s that´s not very flexible.
>
> > > > I use EJB3 myself on the server side, and then use Dozer to convert
> > > > the EJBs to POJOs before sending them to the client.
> > > > Once the objects is sent back, you convert it back to an EJB, Works
> > > > like a charm so far.
>
> > > > On 2 Sep, 13:26, Tolga Özdemir  wrote:
> > > > > oh..it does mean we cannot use ejb3 yet.. right?
>
> > > > > On Wed, Sep 2, 2009 at 2:13 PM, David Given 
> > wrote:
>
> > > > > > tolga ozdemir wrote:
> > > > > > [...]
> > > > > > > Can you enlighten me wheather we could use javax.persistence.* in
> > our
> > > > > > > serialized DTO objects for the sake of RPC??
>
> > > > > > > can I use @Table, @Id or other annotations?
>
> > > > > > The GWT runtime ignores annotations --- they're not kept at runtime
> > on
> > > > > > the client. So you can pass annotated objects perfectly happily
> > over
> > > > the
> > > > > > link and they'll work fine.
>
> > > > > > I've had good experiences using Berkeley DB JE and GWT. It's
> > possible
> > > > to
> > > > > > query an object on the server, have Berkeley DB instantiate it for
> > me,
> > > > > > and then just return it directly to the client for display. So I'd
> > > > > > imagine you could use something similar with javax.persistence.
>
> > > > > > The only thing you probably need to be concerned with is that if
> > you
> > > > > > instantiate an object on the server, pass it to the client, then
> > pass
> > > > it
> > > > > > back to the server, you're getting a different physical object than
> > the
> > > > > > one you originally instantiated so the persistence layer might get
> > its
> > > > > > cacheing confused. (Berkeley DB doesn't seem to be bothered by
> > this.)
>
> > > > > > --
> > > > > > ┌─── ｄｇ＠ｃｏｗｌａｒｋ．ｃｏｍ ─http://www.cowlark.com─
> > > > > > │
> > > > > > │ "They laughed at Newton. They laughed at Einstein. Of course,
> > they
> > > > > > │ also laughed at Bozo the Clown." --- Carl Sagan
>
> > > > > --
> > > > > Tolga Özdemir
>
> > > > > Mobile 0 536 963 7890
> > > > > MSN ozde...@hotmail.com- Dölj citerad text -
>
> > > > > - Visa citerad text -
>
> > > --
> > > Tolga Özdemir
>
> > > Mobile 0 536 963 7890
> > > MSN ozde...@hotmail.com- Dölj citerad text -
>
> > > - Visa citerad text -
>
> --
> Tolga Özdemir
>
> Mobile 0 536 963 7890
> MSN ozde...@hotmail.com
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