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Posted to users@tapestry.apache.org by Hugo Palma <hp...@digitalis.pt> on 2005/06/01 11:34:52 UTC
Re: Inject visit and global to base page class
Maybe i'm not understanding this correctly but it seems to me that the
behaviour i've described is quite essential to most applications. As an
example, most applications have a base page class that implements the
pageValidate method for performing authorization checks. These usually
involve database access, so as usual the code that does the validation
should be in a hivemind service.
If i understood correctly, for this approach to work now i would have to
inject the service in every single page of my application, right ? If
so, i think this is a very poor way of doing things.
I thought about accessing the hivemind registry directly from the base
page class so that i could use them directly just for this base page but
the access to the ServletContext has been deprecated.
Is there any other way around this ?
Thanks
Hugo
Howard Lewis Ship wrote:
>No, those are still hard-wired.
>
>On 5/25/05, Hugo Palma <hp...@digitalis.pt> wrote:
>
>
>>In 4.0 we are supposed to inject the visit and global objects as
>>page/component properties where needed. But what if i need them in every
>>page ?
>>I need the visit object in every page because i use it to check if the
>>user is logged on. I do this in a base class that all page classes
>>extend. I don't want to have to write "inject" element in every single
>>page i create. Is there anyway i can do this ?
>>
>>
>>Cheers
>>
>>Hugo
>>
>>---------------------------------------------------------------------
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>>
>>
>>
>>
>
>
>
>
Re: Inject visit and global to base page class
Posted by butterdave <dp...@exchangesolutions.net>.
How do I inject a service into the global object (like visit)?
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Re: Inject visit and global to base page class
Posted by Andreas Andreou <an...@di.uoa.gr>.
Regarding the required cast,
I always add 2 methods in MyBasePage class
getMyVisit()
getMyGlobal()
which return those objects casted into my specific classes
>
> I guess the suggestion is placing your hibernate service inside the
> global object, so instead of having a getHibernateService injected
> property, you can just do:
>
> ((Global)getGlobal()).getHibernateService()
>
> in your validating base class, and have the hibernate service injected
> once into the global object using HiveMind.
>
> Its not as pretty as it could be, especially as there will be a cast
> required.
>
> Richard.
>
>
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Stale Link Exception problem using table [auf Viren geprueft]
Posted by Jonathan O'Connor <Jo...@xcom.de>.
Hi,
I'm getting a stale link exception, when I click on an ImageSubmit in a
contrib:Table (within a Form). It appears that the components for the table
are not getting generated when the form is rewinding. Is this a known
problem? Is there a simple fix? The sad thing is that this used to work no
problem!
I'll probably change these ImageSubmits to DirectLink or something else?
Ciao,
Jonathan O'Connor
XCOM Dublin
IBM Workplace 2.5 Launch Events:
XCOM AG und IBM laden zum weltweiten Launch von IBM Workplace Collaboration
Services 2.5 nach Duesseldorf, Frankfurt und Berlin:
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Re: Inject visit and global to base page class
Posted by Richard Kirby <rb...@capdm.com>.
Hugo Palma wrote:
> Howard Lewis Ship wrote:
>
>> getVisit() and getGlobal() work exactly the same in 4.0 as in 3.0.
>>
>>
>>
> I'm sorry but i didn't understand. What does that have to do with this
> issue ?
I guess the suggestion is placing your hibernate service inside the
global object, so instead of having a getHibernateService injected
property, you can just do:
((Global)getGlobal()).getHibernateService()
in your validating base class, and have the hibernate service injected
once into the global object using HiveMind.
Its not as pretty as it could be, especially as there will be a cast
required.
Richard.
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Re: Inject visit and global to base page class
Posted by Hugo Palma <hp...@digitalis.pt>.
Howard Lewis Ship wrote:
>getVisit() and getGlobal() work exactly the same in 4.0 as in 3.0.
>
>
>
I'm sorry but i didn't understand. What does that have to do with this
issue ?
>The scenario you describe is a great reasont to move towards annotations.
>
>
I understand that, but since annotations will problably only come in
Magritte(5.0) what do you think it's the best approach for this now ?
Thanks
Hugo
>On 6/1/05, Hugo Palma <hp...@digitalis.pt> wrote:
>
>
>>Maybe i'm not understanding this correctly but it seems to me that the
>>behaviour i've described is quite essential to most applications. As an
>>example, most applications have a base page class that implements the
>>pageValidate method for performing authorization checks. These usually
>>involve database access, so as usual the code that does the validation
>>should be in a hivemind service.
>>
>>If i understood correctly, for this approach to work now i would have to
>>inject the service in every single page of my application, right ? If
>>so, i think this is a very poor way of doing things.
>>
>>I thought about accessing the hivemind registry directly from the base
>>page class so that i could use them directly just for this base page but
>>the access to the ServletContext has been deprecated.
>>
>>
>>Is there any other way around this ?
>>
>>
>>
>>Thanks
>>
>>Hugo
>>
>>Howard Lewis Ship wrote:
>>
>>
>>
>>>No, those are still hard-wired.
>>>
>>>On 5/25/05, Hugo Palma <hp...@digitalis.pt> wrote:
>>>
>>>
>>>
>>>
>>>>In 4.0 we are supposed to inject the visit and global objects as
>>>>page/component properties where needed. But what if i need them in every
>>>>page ?
>>>>I need the visit object in every page because i use it to check if the
>>>>user is logged on. I do this in a base class that all page classes
>>>>extend. I don't want to have to write "inject" element in every single
>>>>page i create. Is there anyway i can do this ?
>>>>
>>>>
>>>>Cheers
>>>>
>>>>Hugo
>>>>
>>>>---------------------------------------------------------------------
>>>>To unsubscribe, e-mail: tapestry-user-unsubscribe@jakarta.apache.org
>>>>For additional commands, e-mail: tapestry-user-help@jakarta.apache.org
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>
>>>
>>>
>>>
>>
>>
>
>
>
>
Re: Inject visit and global to base page class
Posted by Howard Lewis Ship <hl...@gmail.com>.
getVisit() and getGlobal() work exactly the same in 4.0 as in 3.0.
The scenario you describe is a great reasont to move towards annotations.
On 6/1/05, Hugo Palma <hp...@digitalis.pt> wrote:
> Maybe i'm not understanding this correctly but it seems to me that the
> behaviour i've described is quite essential to most applications. As an
> example, most applications have a base page class that implements the
> pageValidate method for performing authorization checks. These usually
> involve database access, so as usual the code that does the validation
> should be in a hivemind service.
>
> If i understood correctly, for this approach to work now i would have to
> inject the service in every single page of my application, right ? If
> so, i think this is a very poor way of doing things.
>
> I thought about accessing the hivemind registry directly from the base
> page class so that i could use them directly just for this base page but
> the access to the ServletContext has been deprecated.
>
>
> Is there any other way around this ?
>
>
>
> Thanks
>
> Hugo
>
> Howard Lewis Ship wrote:
>
> >No, those are still hard-wired.
> >
> >On 5/25/05, Hugo Palma <hp...@digitalis.pt> wrote:
> >
> >
> >>In 4.0 we are supposed to inject the visit and global objects as
> >>page/component properties where needed. But what if i need them in every
> >>page ?
> >>I need the visit object in every page because i use it to check if the
> >>user is logged on. I do this in a base class that all page classes
> >>extend. I don't want to have to write "inject" element in every single
> >>page i create. Is there anyway i can do this ?
> >>
> >>
> >>Cheers
> >>
> >>Hugo
> >>
> >>---------------------------------------------------------------------
> >>To unsubscribe, e-mail: tapestry-user-unsubscribe@jakarta.apache.org
> >>For additional commands, e-mail: tapestry-user-help@jakarta.apache.org
> >>
> >>
> >>
> >>
> >
> >
> >
> >
>
>
--
Howard M. Lewis Ship
Independent J2EE / Open-Source Java Consultant
Creator, Jakarta Tapestry
Creator, Jakarta HiveMind
Professional Tapestry training, mentoring, support
and project work. http://howardlewisship.com
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