Thanks Robert!!
I tried 2) before, but I left the interface in the same package
([...].pages).... now I move it to another package like you said and it
works perfectly :)
And thanks for the explanation of the classloaders, it is all clear now.
Regards.
Robert Zeigler wrote:
>
> 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/
>>>>>>
>>>>>>
>>>>>>
>>>>>> ___________________________________________________________
>>>>>> Yahoo! For Good. Give and get cool things for free, reduce waste
>>>>>> and help
>>>>>> our planet. Plus find hidden Yahoo! treasure
>>>>>>
>>>>>> http://green.yahoo.com/uk/earth-day/
>>>>>>
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>>>>>>
>>>>>>
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>>>>>
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