In a relatively large project I sometimes get this exception:
Class: com.google.gwt.core.client.JavaScriptException
Message:
(TypeError): Result of expression 'a' [null] is not an object.
line: 1513
sourceId: 4996591080
sourceURL:
http://worm:8080/myShopInstall/gwt-results-app/F89E790362E6204FFEC
Y(ou'll probably only have this kind of exception in javascript
compiled app, so you won't be able to use hosted/devmode to inspect
it. I'd probably compile the application with style=DETAILED and use
tools like firebug (Firefox) or webkit developer tools (chrome/safari)
to debug that.
Of course, i
I have a similar problem with a compiled GWT javascript, but it only
fails in IE.
Im not sure where in eclipse to set "style=DETAILED" and even if I
did, is there a firebug dev tool for debugging javascript in IE?
I dont mind taking some time to figure out how to set the
"style=DETAILED", but onl
This can happen in devmode. I found one today - it was an exception in
a deferred command while manipulating an xml document.
To debug in devmode is relatively easy - simply debug before it breaks
and step through.
In web mode I have encountered a few of these as well. Here is our
approach:
1. Ma
Well, using Safari I can now spot the place where the exception is
thrown in the generated JavaScript, but I have no way to relate that
to the Java code that I put into the GWT compiler.
Any clues as to how I do that?
Regard,
Anders
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I finally bit the bullet, and started commenting out huge chunks of my
code, and running the application to see if that got rid of the
problem...
After a few hours of this, I finally narrowed it down to the following
(and similar) line of code:
daygrid.getColumnFormatter().setWidth(col, "0px");
When you press the compile button in Eclipse, there is a drop down menu
called: Output Style. One of the options there is the detailed. I suppose
that would do the trick ...
2010/1/21 John V Denley
> Id still like to know how to set this setting via eclipse, which im
> sure is very simple for so
I dont get that option, where is this "compile" button you refer to? I
always use the "run as", there is a "Compile GWT project" under that, but it
doesnt give me any options, it just starts compiling!
Incidentally, I have now deployed this "fixed for IE" version, and online,
it doesnt work, even
On 21 Jan., 15:44, John V Denley wrote:
> for you dduck, the way forward would be to do as leduque suggests
> above and set the compile time flag for style to "detailed" and that
> should give you a much better idea where the error is, you might find
> the following link
> useful:http://code.go
On 26 Jan., 13:11, dduck wrote:
> I have done so, but the debugging still points to a piece of
> JavaScript that does not have a clear correspondence to the original
> Java code :(
Specifically it points to this line:
function Y$(a){var b;if(a.Z()){return KK(new IK,Wob)}else{b=lJ(new
fJ,Ohb+a.
...and another, this time the one I am actually after:
Class: com.google.gwt.core.client.JavaScriptException
Message:
(TypeError): Result of expression 'a' [null] is not an object.
line: 1520
sourceId: 4968015904
sourceURL:
http://worm:8080/myShopInstall/gwt-results-app/5DF30FE3D0E594F4B64889C27B
BTW, Your code stills looks like compiled with -style obfuscated.
On Jan 26, 6:55 am, dduck wrote:
> ...and another, this time the one I am actually after:
>
> Class: com.google.gwt.core.client.JavaScriptException
> Message:
> (TypeError): Result of expression 'a' [null] is not an object.
> line:
On 26 Jan., 16:15, Djabi wrote:
> BTW, Your code stills looks like compiled with -style obfuscated.
You are right.
Thought I had fixed it, but hadn't.
Here is the unobfuscated code:
function com_google_gwt_user_client_ui_Panel_
$clear__Lcom_google_gwt_user_client_ui_Panel_2V(this$static){
This is beyond anything Ive come across before, sorry I cant help anymore,
though it looks like i did manage to push you in the right direction!
good luck figuring it out...
2010/1/26 dduck
>
>
> On 26 Jan., 16:15, Djabi wrote:
> > BTW, Your code stills looks like compiled with -style obfu
On 26 Jan., 20:51, John Denley wrote:
> This is beyond anything Ive come across before, sorry I cant help anymore,
> though it looks like i did manage to push you in the right direction!
>
> good luck figuring it out...
I finally did.
The root cause was a programming error on my behalf, wh
On 27 Jan., 10:07, dduck wrote:
> I understand that a better stack
> trace mechanism is in the works, but obviously it is not yet part of
> the production branch of GWT. In the mean time we are left to our most
> ancient tools, the printf and our naked brain :)
Turns out it is in the production
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