Is it an ExternalPage parameter that you are trying to access in
pageValidate()/pageBeginRender() ?
I remember having trouble with the order of callbacks for external pages.
You might find that the you are accessing the parameter before
activateExternalPage() has been called.
> Hi,
> Yes, I understand what you are saying here. I do not understand the
> following. If I use instance variables to pass the storeLocation into my
> component it works fine. storeLocation is passed through to the component
> and getLocationOfStore() contains the location I passed in from the page.
> If however I use an abstract property to pass the storeLocation into my
> component, storeLocation is not passed into the component ie.
> getStoreLocation() is null
>
> Thanks
> Brian
>
> Ron Piterman wrote:
>> :)
>>
>> Tapestry uses a pool to store page instances. While rendering it is safe
>> to use instance variables but you have to make sure they are reset,
>> preferrably in either pageDetached or pageAttached events.
>> If you don't reset them, information can be shared between many users of
>> your site, but not by all, since they might get another instance from the
>> pool.
>>
>> When using abstract properties, tapestry does the initialization work for
>> you.
>>
>> Hope that helps,
>> Ron
>>
>>
>>
>> Brian Doherty wrote:
>>> Sorry. What I mean by does not work is that getLocationOfStore() in my
>>> component is null after the component renders.
>>> When I use the updated code below the storeLocation is passed through to
>>> the component and getLocationOfStore() contains the location I passed in
>>> from the page.
>>> It does not like it when I use abstract getters and setters but I dont
>>> understand why.
>>>
>>> Thanks
>>> Brian
>>>
>>>
>>> Ron Piterman wrote:
>>>
>>>> Brian Doherty wrote:
>>>>
>>>>>
>>>>> Hi,
>>>>>
>>>>> I am having problems binding a property on my page to a parameter in
>>>>> my component. The following does not work
>>>>
>>>>
>>>> can you be more specific. "Does not work" is somehow general...
>>>>
>>>>>
>>>>> I have a CategoryListComponent as follows
>>>>>
>>>>> <component id="categoryListComponent" type="CategoryListComponent">
>>>>> <binding name="locationOfStore" value="storeLocation"/>
>>>>> </component>
>>>>>
>>>>>
>>>>> On my CategoryList.java I have
>>>>>
>>>>> public abstract void setStoreLocation(Location storeLocation);
>>>>> public abstract Location getStoreLocation();
>>>>>
>>>>>
>>>>> If however I change it as follows, it works fine. The storeLocation is
>>>>> passed into the component.
>>>>>
>>>>> <component id="categoryListComponent" type="CategoryListComponent">
>>>>> <binding name="locationOfStore" value="locationOfStore"/>
>>>>> </component>
>>>>>
>>>>>
>>>>> On my CategoryList.java this time I have
>>>>>
>>>>> private Location locationOfStore;
>>>>> public void setLocationOfStore(Location locationOfStore) {
>>>>> this.locationOfStore = locationOfStore;
>>>>> }
>>>>> public Location getLocationOfStore() {
>>>>> return locationOfStore;
>>>>> }
>>>>>
>>>>> I dont understand why the Location wont be passed through if it
>>>>> declared as abstract. Any help would be great
>>>>>
>>>>> Regards
>>>>> Brian
>>>>>
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>>>>>
>>>>>
>>>>
>>>>
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>>>
>>>
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>>>
>>
>>
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>
>
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