Re: Stateless Wicket and Ajax

2011-09-01 Thread Decebal Suiu
Hi

I have the same problem unable to find component with path...  (a
DropDownChoice with StatelessAjaxFormComponentUpdatingBehavior(onchange)
on each item in a repeater ). It's now a solution without to modify wicket
sources (probably with the wicket 1.5 version)?

Thanks,
decebal

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Re: Stateless Wicket and Ajax

2011-03-13 Thread Martin Grigorov
On Sat, Mar 12, 2011 at 2:48 PM, Serban Balamaci serban.balam...@asf.rowrote:

 Yes I was looking at jolira tools, but I get the exception unable to find
 component   and looking at the source:
 final Component component = page.get(pageRelativeComponentPath);
 if (component == null) {
throw new WicketRuntimeException(unable to find component with
 path 
+ pageRelativeComponentPath
+  on stateless page 
+ page
 +  it could be that the component is inside a
 repeater make your component return false in getStatelessHint());
}

 and yes I'm using it inside a ListView, so this means that
 StatelessAjaxFallbackLink cannot be used inside a repeater(and have a
 stateless page)?

 Martin I see that you have not replaced StatelessWebRequestCodingStrategy
 in
 your  https://github.com/martin-g/wicket-stateless

I didn't need it so far. The Ajax stateless links and behaviors work just
fine for now.


 https://github.com/martin-g/wicket-stateless . So the problem with the
 ajax
 link in the repeater remains?

I'm not sure. I'll need more test cases to see when and why it doesn't work.
Please create a quickstart that fails and attach it to GitHub issue.


 I'm trying to understand if there is a known case of not using
 StatelessAjaxFallbackLink inside repeaters. Or is it somehow my fault? My
 repeater model does not change beetween renderings so the
 pageRelativeComponentPath should be the same.

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Re: Stateless Wicket and Ajax

2011-03-13 Thread Martin Grigorov
Hi,

On Sat, Mar 12, 2011 at 10:41 PM, robert.mcguinness 
robert.mcguinness@gmail.com wrote:

 Martin,

 With a custom StatelessRequestMapper and and a the change to
 Behaviors.getBehaviorById(int id) below I was able to get stateless
 components to work in 1.5 using a clone
 https://github.com/martin-g/wicket-stateless.  This is probably not the
 best
 approach but it was a fun exercise.

 http://apache-wicket.1842946.n4.nabble.com/file/n3350821/Behaviors.java
 Behaviors.java

 http://apache-wicket.1842946.n4.nabble.com/file/n3350821/StatelessRequestMapper.java
 StatelessRequestMapper.java

 Thanks! I'll check them.
A change in Behaviors.java is indeed needed. But I never needed custom
request mapper to have the stateless ajax links and behaviors working.
Thanks again for sharing your work!

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Re: Stateless Wicket and Ajax

2011-03-13 Thread Serban Balamaci
Hello everybody.
It is indeed as Robert is saying. And after changing the code, it works
Component component = page.get(pageRelativeComponentPath);

// See {@link
//
BookmarkableListenerInterfaceRequestTarget#processEvents(RequestCycle)}
// We make have to try to look for the component twice, if we hit
the
// same condition.
if (component == null) {
page.prepareForRender(false);
component = page.get(pageRelativeComponentPath);
//Component no longer null


Looking at BookmarkableListenerInterfaceRequestTarget#processEvents we
find the comment:
this is quite a hack to get components in repeater work. But it still can
fail if the repeater is a paging one or on every render it will generate new
index for the items...

I was trying to implement a comment system for articles. The stateless ajax
buttons would be reply buttons for comments that can span multi levels. I
can't feel confident that the comment hierarchy will not change by the time
the user clicks reply. Currently I'm thinking of moving the reply as a
behaviour outside the repeater, and use JQuery to pass the comment id to
that behaviour so I can know to which comment the user is replying.


Thanks everybody.

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Re: Stateless Wicket and Ajax

2011-03-12 Thread Serban Balamaci
Yes I was looking at jolira tools, but I get the exception unable to find
component   and looking at the source:
final Component component = page.get(pageRelativeComponentPath); 
if (component == null) {
throw new WicketRuntimeException(unable to find component with
path 
+ pageRelativeComponentPath
+  on stateless page 
+ page
+  it could be that the component is inside a
repeater make your component return false in getStatelessHint());
}

and yes I'm using it inside a ListView, so this means that
StatelessAjaxFallbackLink cannot be used inside a repeater(and have a
stateless page)?

Martin I see that you have not replaced StatelessWebRequestCodingStrategy in
your  https://github.com/martin-g/wicket-stateless
https://github.com/martin-g/wicket-stateless . So the problem with the ajax
link in the repeater remains?

I'm trying to understand if there is a known case of not using
StatelessAjaxFallbackLink inside repeaters. Or is it somehow my fault? My
repeater model does not change beetween renderings so the
pageRelativeComponentPath should be the same.

-
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Re: Stateless Wicket and Ajax

2011-03-12 Thread robert.mcguinness
Martin,

With a custom StatelessRequestMapper and and a the change to
Behaviors.getBehaviorById(int id) below I was able to get stateless
components to work in 1.5 using a clone
https://github.com/martin-g/wicket-stateless.  This is probably not the best
approach but it was a fun exercise.

http://apache-wicket.1842946.n4.nabble.com/file/n3350821/Behaviors.java
Behaviors.java 
http://apache-wicket.1842946.n4.nabble.com/file/n3350821/StatelessRequestMapper.java
StatelessRequestMapper.java 

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Re: Stateless Wicket and Ajax

2011-03-12 Thread robert.mcguinness
Serban,

If you make the change below in StatelessWebRequestCodingStrategy the
component should be found in the page.  It's a copy from
BookmarkableListenerInterfaceRequestTarget#processEvents.  Jolira noted this
might be needed in their comments.


private static Component getComponent(final Page page, final String
componentPath) {
final String pageRelativeComponentPath =
Strings.afterFirstPathComponent(componentPath, PATH_SEPARATOR);
 Component component = page.get(pageRelativeComponentPath);


if(component == null) {
page.prepareForRender(false);
component = page.get(pageRelativeComponentPath);

// See {@link
//
BookmarkableListenerInterfaceRequestTarget#processEvents(RequestCycle)}
// We make have to try to look for the component twice, 
if we hit the
// same condition.
if (component == null) {
throw new WicketRuntimeException(unable to 
find component with path  +
pageRelativeComponentPath +  on stateless page  + page
+  it could be that the 
component is inside a repeater make your
component return false in getStatelessHint());
}
}


return component;
}

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Re: Stateless Wicket and Ajax

2011-03-11 Thread Vojtěch Krása
Hi,
check this
http://apache-wicket.1842946.n4.nabble.com/Removing-the-jsessionid-for-SEO-td1854094.html
no error should occur.

2011/3/11 Serban Balamaci serban.balam...@asf.ro

 Hello everybody.
 I'm interested in Wicket for a public site. I want to use stateless pages
 in
 order to have nice looking pages indexed by Google(no JSESSIONID in the
 url)

 There is an approach to remove JSESSIONID from the url for search bots but
 I
 do not like it since that would mean that any link to another page
 contained
 in that page would cause a Page Expired error since the session is lost
 thus
 no deep page navigation.

 So how would you implement AJAX since having AjaxLinks and even
 AjaxEventBehaviour makes a stateless page become statefull?
 There is the jolira tools wicket-stateless which provides
 StatelessAjaxFallbackLink, but it seems that there is the link is inside a
 repeater it could be that the component is inside a repeater make your
 component return false in getStatelessHint() which pretty much means that
 the page becomes statefull.

 I'm even considering using JQuery for AJAX and so looked at WiQuery with
 WiQueryAbstractAjaxBehavior but alas it extends
 AbstractDefaultAjaxBehavior.

 So perhaps using JQuery ajax requesting from with a generic WebPage serving
 wicket panels based on page parameters? This seems a poor approach.

 In the end, what other framework would you recommend? Preferably JAVA
 based.
 Maybe Play framework(not a fan of the templating sintax)?

 Thank you.

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Re: Stateless Wicket and Ajax

2011-03-11 Thread robert.mcguinness
I built a stateless site using the 
http://code.google.com/p/jolira-tools/wiki/stateless Jolira Tools  and it
worked out great, you just have to get used to using PageParameters for
everything (contructors, pagination, etc).  



During development I had conditional breakpoints in locations that would
indicate statefulness (the Stateless annotation wasn't working as expected
at the time)



Component.isStateless
Session.isTemporary
Session.bind


I'm trying to convert the stateful components to Wicket 1.5 but I'm not too
familiar with the new Wicket version yet so it's a slow process.


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Re: Stateless Wicket and Ajax

2011-03-11 Thread Martin Grigorov
On Fri, Mar 11, 2011 at 8:28 PM, robert.mcguinness 
robert.mcguinness@gmail.com wrote:

 I built a stateless site using the
 http://code.google.com/p/jolira-tools/wiki/stateless Jolira Tools  and it
 worked out great, you just have to get used to using PageParameters for
 everything (contructors, pagination, etc).



 During development I had conditional breakpoints in locations that would
 indicate statefulness (the Stateless annotation wasn't working as expected
 at the time)



 Component.isStateless
 Session.isTemporary
 Session.bind


 I'm trying to convert the stateful components to Wicket 1.5 but I'm not too
 familiar with the new Wicket version yet so it's a slow process.

 Here they are: https://github.com/martin-g/wicket-stateless
https://github.com/martin-g/wicket-statelessBut a tweak in Behaviors.java
is needed to work fine.
I'll try to improve that soon.


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