-directional JSON, etc. I have benchmarked and tweaked
this thing and it is MUCH faster than many other toolkits
like it out there.
The github repo, links to demo's and there is a ( now incomplete github
wiki ) can be found here:
https://github.com/ahome-it/lienzo-core
Cheers,
Dean S. Jones
--
You
I'm not trying to be a party-pooper, or belittle the work you have done in
any way, but I have already been down this route, and decided to implement
the same API in a project called Lienzo
https://github.com/emitrom/lienzo
which is PURE GWT
but its not 100% parity complete with Kinetic 5.0,
to continue on Kinetic, or help us flesh out some
small remaining pieces?
It seems to me wasteful, as you definitely have talent, to work on
basically the same thing.
On Wednesday, March 26, 2014 1:09:27 AM UTC-4, Dean S. Jones wrote:
I'm not trying to be a party-pooper, or belittle the work you have
True. I had previously coded up a full GWT binding for Raphael, some years
back, I still have that around. The only issue is to get Raphael to really
work nice with GWT events, I had to bind the Raphael Elements up into
Widgets, and that was fine
with a couple hundred primitives, but when it
True. I had previously coded up a full GWT binding for Raphael, some years
back, I still have that around. The only issue is to get Raphael to really
work nice with GWT events, I had to bind the Raphael Elements up into
Widgets, and that was fine
with a couple hundred primitives, but when it
http://www.emitrom.com/lienzo
On Tuesday, August 6, 2013 7:27:42 AM UTC-4, Magnus wrote:
Hi,
I am looking for a method/library for displaying vector graphics in my gwt
chess application.
What looks good at first sight is lib-gwt-svg:
code.google.com/p/lib-gwt-svg/
But there seems to be
Well, you could save yourself a bit of work and take a look at Lienzo
http://www.emitrom.com/lienzo
/open-source-public-service-announcement-only ;-)
On Wednesday, April 3, 2013 10:13:34 AM UTC-4, membersound wrote:
Hi,
when a Canvas is often cleared and redrawn (for example during a drag
You could always have a look at our Canvas toolkit
http://www.emitrom.com/lienzo
Pan/Zoom will be in 1.1, out by the end of the month
On Sunday, January 20, 2013 3:01:39 PM UTC-5, membersound wrote:
Hi,
I draw ellipses on a canvas on click, and want to remove them on
doubleclick.
I had posted, why reason it was deleted?
On Thursday, December 20, 2012 6:14:43 AM UTC-5, membersound wrote:
I'm creating some kind of drawings/flowchart/UML-diagram like tool with
GWT Canvas (Java).
For hit-detection of my drawings I could imagine 3 different strategies,
but I do not
A bounding box check isn't O(1), it's O(n) for n shapes, THEN you have to
run edge detection, and only then if all your shapes are Polygons. The
issue with bounding boxes is that, in all but the most trivial cases, they
are expensive to compute. If you add in any Affine Transforms ( rotate,
best to go with a
library that has already had all of this done for him - provided he can fit
his flowchart/UML code into the Lienzo scene graph. :)
On Thursday, December 20, 2012 6:28:54 PM UTC+2, Dean S. Jones wrote:
A bounding box check isn't O(1), it's O(n) for n shapes, THEN you have
on the web) - and can be easily extended with
B-trees in the future if time allows / performance requires it. Most of the
HTML5 stuff you see on the web using canvas uses this approach after all.
On Thursday, December 20, 2012 8:26:33 PM UTC+2, Dean S. Jones wrote:
As long as the shapes
Use of a bounding box over every shape isn't O(1), it's O(n) for n shapes,
but then you still have to do a real' hit detection, which is
mathematically much more interesting for things like bezier and quadratic
curves, etc, unless you decompose the curves to polylines, this isn't all
that fun.
GWT Visualization is just for charting, and uses Googles services, Lienzo
can be used for Charting, ( as well as any other 2D graphics )... and we
are building a charting package that should equal or surpass GWT
Visualization or Highcharts
On Tuesday, December 18, 2012 9:55:11 AM UTC-5, James
GWT Visualization is just for charting, and uses Google's services, Lienzo
can be used for Charting, ( as well as any other 2D graphics )... and we
are building a charting package that should surpass GWT Visualization or
Highcharts
Charts in general are not all that hard, the math is pretty
.
On Tuesday, December 18, 2012 4:01:57 PM UTC-5, James wrote:
I am feeling this library can provide good chart potential abilities. I
can wait for a couple of months for my project. Do you have a road map for
chart features?
James
On Tuesday, December 18, 2012 12:17:12 PM UTC-5, Dean S. Jones
for a couple of months for my project. Do you have a road map for
chart features?
James
On Tuesday, December 18, 2012 12:17:12 PM UTC-5, Dean S. Jones wrote:
GWT Visualization is just for charting, and uses Google's services,
Lienzo can be used for Charting, ( as well as any other 2D graphics
Can you outline the incompatibilities between GWT proper and using
Elemental?
Ran into some issues with ArrayList, etc... bombing out if used in both.
Also, and updates on Java7 server side support in GAE?
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commercially. It's
pretty cheap, for what you get...
Dean S. Jones
On Jan 8, 12:19 pm, Subhrajyoti Moitra subhrajyo...@gmail.com wrote:
http://code.google.com/p/gwt-google-apis/wiki/VisualizationGettingSta...
if u are looking for GWT specific libs.
Otherwise there are plenty of options like
attractive UI design is more of an art than a science, but factoring
in usability is
just as important. I wish most designers would read this book:
http://www.amazon.com/Dont-Make-Me-Think-Usability/dp/0321344758/ref=sr_1_1?ie=UTF8s=booksqid=1280544928sr=8-1
something pretty is not ALWAYS easy
Oh, and... someone with an artistic bent along with technical
knowledge could do quite well in the field of Data Visualization.
Charting is pretty much covered these days, I have GWT wrapped both
HighCharts http://www.highcharts.com/demo/ and
Raphael http://raphaeljs.com/ , but images of complex
Looking at finishing up an idea, and I have come across a thought in
MVP: Global v.s a multiple/hierarchy of view/presenter EventBus's, and
wondered if anyone
had explored this avenue. The basics are there is the global EventBus,
as is typical now, and a local EventBus for actions in the current
Typically, I like to avoid this problem altogether, and NOT allow the
user to see the GWT page
until they are logged in. The Login page is normal JSP, and I employ a
ServletFilter to check
that if the user tries to load the GWT page and is not logged in, they
get redirected to the Login
JSP. There
Sorry, again, looking at your above example, to make my point
clear, using Firebug I can find (!user.isAuthenticated()) and any
a JS debugger to subvert it. GWT obfuscates JS code, but
anyone with 1) curiosity and a brain, 2) ulterior motives , this
is a cakewalk.
Think about it.
and
NEVER
look at the implementation of FastStringMap
http://code.google.com/p/google-web-toolkit/source/browse/trunk/user/src/com/google/gwt/user/client/ui/FastStringMap.java?r=931
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Create a simple Spring config file, initialize it from a
ServletContextListener
http://download.oracle.com/docs/cd/E17477_01/javaee/5/api/javax/servlet/ServletContextListener.html
Store the Spring de-serialized config in your
Application(ServletContext) scope.
I like to keep my global configs
A generator can call a generator, i.e. you can put a GWT.create() in
your generated code.
You are right, the last generator defined is the only one run.
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This is not totally true, gwt-rpc is OK for most data transfers, but
it causes a bit of overhead in deserialization. GWT's client side JSON
library is SLOW,
it constructs a parallel data structure of concrete types on parse,
upfront, and by default uses eval('''), which isn't always the best or
this might help a little
http://code.google.com/p/asmodaiosgwt/
On Nov 23, 10:40 am, denis56 denis.ergashb...@gmail.com wrote:
Hi there,
I wonder if it is possible to use Internationalization and
ImageBundles in GWT in a more dynamic way. For instance, if there is a
client method
void
850k is nothing, it's the size of many images or photo's, as hazy1
said, compression will reduce the size dramatically,
( I moved compression from the app server to my fronting Apache and
it's much more efficient )
and you can also set the expires header on the GWT html/js to some
future date ( a
PopupPanel displayed behind heavyweight browser items, Applets, PDF
plugin... I have a fix that uses an iframe and z-indexes, is this
already logged as a defect
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Do you need to execute predefined JavaScript functions, or kind of an
eval of JavaScript code ???
On Sep 11, 10:26 am, Senshi cristian.ro...@gmail.com wrote:
I need help =(
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Definitely. I just put up my first Open Source package:
http://code.google.com/p/asmodaiosgwt/ , for making
AbstractImagePrototype's in an
ImageBundle into a MapString, AbstractImagePrototype , so you can
find them by a String(name).
It's a simple bit of code that uses a Generator, took a few
http://code.google.com/p/asmodaiosgwt/
My first project, but many people have asked How do I look up an
image by a name ( String ) from an ImageBundle.
Generally, it's kind of a mess to try to do that, so I thought I would
make it simpler.
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http://wiki.oneswarm.org/index.php/OS_X_10.6_Snow_Leopard
this got me back up and running
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{
}
On Aug 24, 10:40 pm, Dean S. Jones deansjo...@gmail.com wrote:
There is no easy way to do this, Reflection is not supported in GWT.
The only thing GWT'ish I can think of is wrapping theImageBundlein
some Interface makes a MapString, AbstractImagePrototype from a GWT
Generator
Thats a bit
{
}
If anyone is interested, drop me a line.
On Aug 24, 10:40 pm, Dean S. Jones deansjo...@gmail.com wrote:
There is no easy way to do this, Reflection is not supported in GWT.
The only thing GWT'ish I can think of is wrapping theImageBundlein
some Interface makes a MapString, AbstractImagePrototype
first, Generators apply to interfaces, not classes, and yes, it's one
generator per interface... you can choose a generator based on a
property,
like the DOMImpl interfaces:
replace-with class=com.google.gwt.dom.client.DOMImplSafari
when-type-is class=com.google.gwt.dom.client.DOMImpl/
this works for me:
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
@Target(ElementType.METHOD)
@Retention(RetentionPolicy.RUNTIME)
public @interface Condition
{
Type value()
Sorry for the posting on here... I know this isn't a job board...
but...
Permanent positions in a HOT Financial in Midtown NYC, must know GWT
internals, creating custom widgets, GWT patterns, UI design and
usability, Apache/Tomcat/J2EE expertise, DOM/HTTP, secure site
designs, some Oracle would
There is no easy way to do this, Reflection is not supported in GWT.
The only thing GWT'ish I can think of is wrapping the ImageBundle in
some Interface makes a MapString, AbstractImagePrototype from a GWT
Generator
Thats a bit too much trouble for a few ImageBundles, so I just created
class
http://faq.javaranch.com/java/HowToPrettyPrintXmlWithJava
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To
This is where I diverged from the typical MVP pattern, the Has*
interfaces just became to numerous and unwieldy. My solution was to
make the
model richer, and attach a Map of state values to each model
property. It was then up to the Presenter to interpret the associated
property state map, and
Thanks to the Google Plugin Team and all involved!!!
Any idea when you will switch up to GWT 1.7???
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Short answer: no.
Shorter answer: no.
ImageBundle images can't be used as CSS backgrounds, if you understand
the implementation, you understand why.
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this is the correct response, tho, I put all inter-client-server
classes in shared/rpc, or some such package.
On Jul 29, 11:10 am, Paul Robinson ukcue...@gmail.com wrote:
You want this in your gwt.xml file:
source path=client/
source path=shared/
Note that if any source... element
I will raise a minor point relaying back EXACT exceptions, with
all failure information, is not a good idea in a production
environment.
This is generally what we call Exception Information Leakage - it
exposes the underlying implementation of your servers architecture,
and certain errors
+1
On Jul 18, 9:38 am, twdarkflame darkfl...@gmail.com wrote:
This is a very good idea.
On Jul 15, 4:31 am, Kelvin kelvin...@gmail.com wrote:
I create a SilkImageBundle and put all silk icons library to it. the
silk icon library contains 1000 icons and just a few hundreds of them
are
if you are talking about Octave, the Numerical Package, maybe this
will help:
http://jopas.sourceforge.net/
On Jul 12, 8:48 pm, brett.wooldridge brett.wooldri...@gmail.com
wrote:
I've never heard of, or to my recollection, never encountered this
restriction. Even if some servlet containers
I had the same issue once, had to do image lookup by name - I ended up
creating an Interface with a static reference to the ImageBundle, and
then using a GWT Generator to create Map Entries to an ImageFactory
type. This was only worth the work because it was a Toolkit for apps
where there could
the best approach is not so cut-n-dried, on what you are trying to do
- does the result of one RPC depend on another, if so, the best way
in to chain requests - call one RPC when the previous finished, if
not - then you can fire them all and use a countdown AsyncCallback
to know when they are all
Both should be ScrollPanels, add a ScrollListener to each, when one
scrolls, set the others scroll position based on the values passed on
on the onScroll() method.
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I really have nothing better to do on a Sunday night ;-)
On Jul 12, 11:08 pm, Sky myonceinalifet...@gmail.com wrote:
Schooled. (me)
Plus I totally forgot you needed them to scroll together.
sry I dropped the ball on that one, good thing Dean picked it up :)
On Jul 12, 9:55 pm, Dean S
) is but a small part of that one
site.
On Jul 6, 5:20 pm, Dean S. Jones deansjo...@gmail.com wrote:
Is there a reason you need to include the CSS in the html file??
it would be more correct - easier to catch errors, and sure of
loading order - if you included the CSS file in your apps module
to be clear - in the above post, we keep no state in the server
other than the info associated with the session ID, and that info is
NOT stored in the Session Context. As many have found in the past,
storing session state leads to performance issues in session
serialization and server sync
Is there a reason you need to include the CSS in the html file??
it would be more correct - easier to catch errors, and sure of
loading order - if you included the CSS file in your apps module
gwt.xml file
with a stylesheet src=resources/Test.css/
GWT will copy the resources folder to the final
The images are defined in the standard theme CSS, make sure you have
this line ( uncommented ) in your Module .gwt.xml file:
inherits name='com.google.gwt.user.theme.standard.Standard'/
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My recent experience was to not trust the client AT ALL. If you send
any info to the client ( Cookie, or a token to be sent back on RPC ),
someone with
knowledge enough could use a JS debugger and modify the memory
containing the token, and your busted.
Personally, I use multiple methods.
ugh... this is not simple...
start here
http://code.google.com/p/google-file-service/
On Jul 6, 8:59 pm, Paulo Coutinho pa...@prsolucoes.com wrote:
Hi ppl,
Im developing a new app and host on appengine, but now i need know how
to upload a file with java backend, because i dont find
, this is a financial/banking application.
You have to go the extra mile and then some in that case. That said,
most of the rest of us (including the likes of gmail, ebay,
facebook) aren't overly concerned with user's messing with their
cookies.
-Brett
On Jul 7, 8:36 am, Dean S. Jones deansjo
engine database, i only want the
data of upload to send to my other server of images.
Understand?
2009/7/7 Paulo Coutinho pa...@prsolucoes.com:
Ok thanks.
2009/7/7 Dean S. Jones deansjo...@gmail.com:
ugh... this is not simple...
start here
http://code.google.com/p/google-file
not to be snarky, but congratulations on realizing you just hit a GWT
architectural wall - that you likely can't fix*
I have posted many times about the issues of Domain Objects in the
UI
This isn't bad, but will eventually evolve/devolve into a SDO like
pattern http://en.wikipedia.org/wiki/Service_Data_Objects
Essentially, you have ONE DTO type, an object with a Map of properties
and their values, a property can be primitive, or another DTO Map, or
a collection of either. This
Your on the right track, but if the base interface is used ( in the
signature ) of any RPC method, GWT *has to* generate serializers/
deserializers for every concrete implementor class of that interface.
So, how to work around that...
IF/F the entire app was was coded to the Domain Interfaces,
depending on your IDE, just drop the jar in WEB-INF/lib - modify your
build.xml to include all jar's in WEB-INF/lib
On Jul 7, 12:20 am, Vikas vikas.m.ya...@gmail.com wrote:
With GWT 1.5.3 for 'projectCreator' there was addToClassPath parameter
to add 3rd party jars, but with GWT 1.6.4 for
AFAIK, a GWT iframe is completely client side, and GAE has nothing
to do with it. Running hosted mode tho, it will prompt you for
permission, and tell you how to set a whitelist in hosted mode.
i'm running this on GAE, no problems:
public class Deansjones implements EntryPoint {
public
after some contemplation ( and hackery ), I reached the same
conclusion as before: Domain Objects in the UI is a GWT architectural
anti-pattern. I can think up several nasty work-arounds, but nothing
that wouldn't require major changes to the client code.
I stand by my previous assertion: No
You probably have to encode them... with URL.encode(String)
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To
You CAN'T trust the client, anyone skilled enough can hack the JS to
display the widget, or subvert any in memory objects.
To summarize the best I can, first you MUST check permissions of RPC
on the server side. You can use the J2EE roles, but I found that
hard to make very dynamic, it's a Pain,
One of my previous enterprise apps was I18N for 22 languages,
including proper display of R-L languages like Hebrew and Arabic.
We used properties files, all text on the screen was indirectly drawn
by looking up it's key in the property file. GWT I18N can help here,
but it creates ALOT
of
http://xkcd.com/327/
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Thanks for the example - I have to support 1.5 and 1.6 - so I am still
coding to the old event model...
But it's nice to see looking inside HandlerManager that they defer
editing of the handler list while the event it firing.
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You can't use a file:: URI to load an image ( that would attempt to
load it from the machine the browser is on ), you can in theory load
an image from bytes via RPC ( tho it's not worth the highly incredible
ugliness of hackery to do that )
You can sorta write images to the filesystem and serve
Such checks can be routine if you are using proper server side
validation of input. I have written several such frameworks, which
work on generic RPC Models... hence the validation can be routine
and generic.
This, as I have pointed out before, is one of the dangers of using
Domain Objects for
no, but they are not hard to replicate - they rely generally on
patterns like SDO http://en.wikipedia.org/wiki/Service_Data_Objects ,
which can
be trivial to validate, and reasonably easy to bridge to O/R
frameworks. They are also much easier to bridge to client side MVC/PVC
patterns,
without
The problem here is that you can only validate post-de-
serialization, and then you have to have knowledge of the DTO type(via
reflection/AOP monkey business per type ), which gets complicated
FAST.
My best approach was to validate in the Generic Model to Domain
Object Mapper ( BOTH directions
Integer.getInteger(name) gets an integer from System properties.
it is ( roughly ) equal to:
Integer.parseInt(System.getProperty(name));
So, in the GAE, what is the definition if System.getProperty() ??? You
have no method or means of setting them, you don't know the properties
of the Runtime
GWT Incubator
http://code.google.com/p/google-web-toolkit-incubator/wiki/Downloads?tm=2
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remove the / before List.css
On Jun 4, 9:44 am, martinp llanfihan...@googlemail.com wrote:
I am trying to build a multiple-module application using GWT 1.6. I
have a module containing custom widgets that I wish to use in a number
of applications. This module has no entry point. I have
you can try to compile for xs, add add-linker name=xs / to your
GWT Module xml
I had to do something even nastier, I was loading whole apps from
multiple machines into an IFrame and do app-to-app JavaScript
communication.
there are two solutions to this problem
1) explicit domain lowering,
this is really not pretty using a servlet to access Objects sent from
GWT - a string is simple in the URL, a list - you'd have to get fancy
with a POST request
and encode the list in the xxx-form-urlencoded format.
OR, send the objects across in an RPC call, save the objects in the
Session or
nice talk, and how the used some of the upcoming features in GWT 2.0
to solve some of their issues... looking forward to GWT 2.0
but one thing struck me as funny... early in the talk, the espouse the
fact that the used alot of code generation using Google Protocol
Buffers
Many of these issues are WHY we just got done ripping out all EXT-GWT
code out of a large financial app.
1) License issues
2) GWT compatibility ( Widget intermixing, events, exceptions )
3) LookFeel didn't ( and couldn't be made to ) conform to corporate
branding
4) generated javascript size
5)
post your module.xml file
On Jun 5, 12:46 pm, Rafael Barrera Oro boraf...@gmail.com wrote:
Howdy?
I've written a small module with custom widgets and a simple CSS stylesheet.
The problem is that when i inherit the module, i inherit the client side
code but not the stylesheet. I am sure
most ( well, all ) of my GWT apps are single page apps, I include
the GWT generated js in index.jsp at the web root, and drive all
screen display
through history tokens. The administration configuration tab is just a
Widget that is ( built/triggered/shown) when say I get a history
change with
add
source path=client/
source path=common/
to you GWT Module xml
On Jun 5, 9:33 am, Dan King dankin...@gmail.com wrote:
Hi everyone,
I have a GWT project. In that project I created a common package
com.projectName.common When I reference a class from the project I
dont' have an issue in
Not happening here at all... One issue is you B's ctor will call your
A's ctor, which ill run A's doRead()...
check this code:
ublic class A {
private String name;
public A(String name)
{
this.name = name;
doThat();
}
I've been down this path a few times, and it's the reason I have
posted on this group more than once about Not using domain objects in
the UI...
http://groups.google.com/group/Google-Web-Toolkit/browse_thread/thread/c3c7706728c5bf97/73113b1a647ab2e9?lnk=gstq=SDO+Dean#73113b1a647ab2e9
I can see
can't crack
how to do it without the aid of a third-party library.
Thanks. Any other suggestions?
On Jun 2, 11:43 pm, Dean S. Jones deansjo...@gmail.com wrote:
Short answer, check out:
http://code.google.com/p/gwt-exporter/
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this is a little hackey, and doesnt work in hosted mode, but...
public void onModuleLoad() {
final Button sendButton = new Button(Send);
RootPanel.get(sendButtonContainer).add(sendButton);
sendButton.addClickHandler(new ClickHandler()
public void onClick(final ClickEvent event)
{
Window.open(mailto:x...@x.x;, _blank, );
}
});
Ian
http://examples.roughian.com
2009/6/1 Dean S. Jones deansjo...@gmail.com
this is a little hackey, and doesnt work in hosted mode
://en.wikipedia.org/wiki/Service_Data_Objects
On May 26, 7:18 am, hezjing hezj...@gmail.com wrote:
Hi Dean
You raised an interesting point which I had never think of it ...
On Tue, May 26, 2009 at 5:42 PM, Dean S. Jones deansjo...@gmail.com wrote:
As I have posted here numerous times, you
your
generate-with class=net.sf.gilead.proxy.gwt.Gwt15ProxyGenerator
when-type-assignable class=java.io.Serializable /
/generate-with
possibly overrides GWT's default serialization generator???
just a guess
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The announcement does say it was built with GWT and HTML5
http://googleblog.blogspot.com/2009/05/went-walkabout-brought-back-google-wave.html
Interesting, a new major Google app that will only work on a few
browsers that are still in beta that have HTML5 support.
On May 28, 3:52 pm, Evan Ruff
As I have posted here numerous times, you will one day regret having
domain objects used in your GUI. Better to factor down to the few UI
display generic models ( tables, trees, forms, etc )
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each solution posted has it's advantages and faults. Unfortunately, in
real life we still have to deal with IE6, which has a 2 connection
limit per host. Some packages may have found a clever work-around to
this issue. REAL Comet is not widely implemented in a
consistent way ( it doesn't work
the near-ultimate SDO implementation in RPC's is ListMapString,
T , according to the Spec http://en.wikipedia.org/wiki/Service_Data_Objects,
but it's not language agnostic. Check out JSON http://www.json.com/
--~--~-~--~~~---~--~~
You received this message because
First: *.php URL's are typically handled by an Apache module
( mod_php ), so Apache needs to be intercepting those requests and
processing them, the embedded Jetty server will not do this, or
Tomcat, no way, no how.
That being said, there are php engines written in Java (
This is normal Java, the only way to disambiguate is to use full
package qualification.
On May 15, 7:26 pm, Jeff Chimene jchim...@gmail.com wrote:
Hi,
I realize this is probably a Java question, but:
How does one handle colliding import statements?
For example:
import
Sessions are usually bound to a browser, for a given host/Application
Context(war), by a Cookie ( likely called JSESSIONID ), if the two
browsers share a cookie cache/address space, they'll see the same
session cookie, and share the same session.
On Apr 13, 6:40 am, davidst...@gmail.com
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