This is by-product of the live class reloading, and not related to the
instrumentation, per se.
Two classes in different classloaders are not equal. In this case,
you're casting the component object, whose class is in the
"discardable" classloader (which handles page and component classes)
to the "MyPage" class which is in the non-discardable class loader
(which handles anything not a page, component, or mixin). There are
two workarounds to your problem.
1) You code will work "as is" if you put it into a page or component.
In that case, you could try passing the page or component to the
service, instead of trying to load the page or component in the
service. Or...
2) Have your page/pages implement a common interface (the interface
class should be stored outside of the page/component/mixin sub-
packages). Then cast to your interface, instead of to the actual
page. Personally, I think this is a cleaner solution, anyway (knowing
the property you want to set beforehand, but not knowing the actual
class/page name until runtime smells like you want an interface,
anyway).
Robert
On Jun 2, 2008, at 6/25:18 PM , raulmt wrote:
No, I need to do this in a service... but even in a page, i have the
page
class in a String at runtime, so I can't declare a property and use
the
InjectPage like that....
Regards.
Robert Zeigler wrote:
Is this in a component or page class? If so, the answer is:
@InjectPage
private MyPage page;
...
page.setSomething("");
Robert
On Jun 2, 2008, at 6/25:04 PM , raulmt wrote:
Hi,
I'm trying to obtain a page from it's name to set a property on it.
I'm
trying something like this:
Component page = componentSource.getPage("MyPage");
MyPage myPage = (MyPage)page;
myPage.setSomething("");
This code fails in the cast, despite a
System.out.println(page.getClass().getName());
prints the expected page class (com.myapp.pages.MyPage).... I assume
is
because all the instrumentation T5 does to the pages, but is there a
way to
obtain a page from its name and then set a property that the
"original"
class has??
The only workaround i've found is to call the method setSomething
with
reflection, without casting it to MyPage, but it would be really
nice not to
use reflection for this....
Regards.
Filip S. Adamsen-2 wrote:
Hi,
RequestPageCache is an internal service, it's better to use
ComponentSource instead. It has methods to get a component or
page by
logical name.
http://tapestry.apache.org/tapestry5/apidocs/org/apache/tapestry/services/ComponentSource.html
-Filip
On 2008-05-05 16:01, Kristian Marinkovic wrote:
@Inject
private RequestPageCache pageCache;
pageCache.get(logicalName)
g,
kris
Shing Hing Man <[EMAIL PROTECTED]>
05.05.2008 15:53
Bitte antworten an
"Tapestry users" <users@tapestry.apache.org>
An
tapestry Tapestry <[EMAIL PROTECTED]>
Kopie
Thema
Tap 5.0.11 : How to get page instance from page
Usually, I could use the following to inject a page
into another page
@InjectPage
private DetailsPage details;
How to retrieve an instance of a page if I am given
the logical name of a page as a String variable ?
In Tap 4, I would use RequestCycle.getPage(pageName).
Thanks in advance for any asistance!
Shing
Home page : http://www.lombok.demon.co.uk/
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