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Posted to users@tapestry.apache.org by webtekie <we...@gmail.com> on 2005/04/13 16:33:42 UTC
'Tapestry in Action' example question
In the book there is an example on use of html forms and combo boxes.
One piece of code I don't quite understand:
public void selectToppings(IRequestCycle cycle)
{
String toppings = getToppingsList();
ToppingsResult page =
(ToppingsResult) cycle.getPage("ToppingsResult");
page.setToppings(toppings);
cycle.activate(page);
}
What is the purpose of ToppingsResult class, what exectly does it cast?
thanks,
webtekie
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Re: 'Tapestry in Action' example question
Posted by webtekie <we...@gmail.com>.
Yes, thanks I got it. This pdf
http://www.ociweb.com/javasig/knowledgebase/2004-12/TapestryPresentation.pdfexplains
everything quite nicely.
On 4/13/05, Jamie <ja...@dang.com> wrote:
>
> It's a tapestry page, which is not a simple bean, but it uses bean-style
> properties. If you're following standard procedure, these properties
> will be declared "abstract" in the java file and also declared in the
> page specification:
>
> <property-specification name="foo" type="java.lang.String"/>
>
> ----
>
> public abstract String getFoo();
> public abstract void setFoo(String foo);
>
> Jamie
>
> webtekie wrote:
>
> >So the casting class is just sort of Bean where I have all my getters and
> >setters for variables (according to
> >http://wiki.apache.org/jakarta-tapestry/MoreFrequentlyAskedQuestions that
> >Shing referenced)?
> >
> >On 4/13/05, Jamie <ja...@dang.com> wrote:
> >
> >
> >>It's another page!
> >>
> >>The code says:
> >>
> >>get the page called "ToppingsResult";
> >>set the property "toppings" to toppings;
> >>go to the page.
> >>
> >>
> >>webtekie wrote:
> >>
> >>
> >>
> >>>In the book there is an example on use of html forms and combo boxes.
> >>>One piece of code I don't quite understand:
> >>>
> >>>public void selectToppings(IRequestCycle cycle)
> >>>{
> >>>String toppings = getToppingsList();
> >>>ToppingsResult page =
> >>>(ToppingsResult) cycle.getPage("ToppingsResult");
> >>>page.setToppings(toppings);
> >>>cycle.activate(page);
> >>>}
> >>>
> >>>What is the purpose of ToppingsResult class, what exectly does it cast?
> >>>
> >>>thanks,
> >>>webtekie
> >>>
> >>>---------------------------------------------------------------------
> >>>To unsubscribe, e-mail: tapestry-user-unsubscribe@jakarta.apache.org
> >>>For additional commands, e-mail: tapestry-user-help@jakarta.apache.org
> >>>
> >>>
> >>>
> >>>
> >>>
> >>>
> >>---------------------------------------------------------------------
> >>To unsubscribe, e-mail: tapestry-user-unsubscribe@jakarta.apache.org
> >>For additional commands, e-mail: tapestry-user-help@jakarta.apache.org
> >>
> >>
> >>
> >>
> >
> >
> >
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: tapestry-user-unsubscribe@jakarta.apache.org
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>
>
Re: 'Tapestry in Action' example question
Posted by Jamie <ja...@dang.com>.
It's a tapestry page, which is not a simple bean, but it uses bean-style
properties. If you're following standard procedure, these properties
will be declared "abstract" in the java file and also declared in the
page specification:
<property-specification name="foo" type="java.lang.String"/>
----
public abstract String getFoo();
public abstract void setFoo(String foo);
Jamie
webtekie wrote:
>So the casting class is just sort of Bean where I have all my getters and
>setters for variables (according to
>http://wiki.apache.org/jakarta-tapestry/MoreFrequentlyAskedQuestions that
>Shing referenced)?
>
>On 4/13/05, Jamie <ja...@dang.com> wrote:
>
>
>>It's another page!
>>
>>The code says:
>>
>>get the page called "ToppingsResult";
>>set the property "toppings" to toppings;
>>go to the page.
>>
>>
>>webtekie wrote:
>>
>>
>>
>>>In the book there is an example on use of html forms and combo boxes.
>>>One piece of code I don't quite understand:
>>>
>>>public void selectToppings(IRequestCycle cycle)
>>>{
>>>String toppings = getToppingsList();
>>>ToppingsResult page =
>>>(ToppingsResult) cycle.getPage("ToppingsResult");
>>>page.setToppings(toppings);
>>>cycle.activate(page);
>>>}
>>>
>>>What is the purpose of ToppingsResult class, what exectly does it cast?
>>>
>>>thanks,
>>>webtekie
>>>
>>>---------------------------------------------------------------------
>>>To unsubscribe, e-mail: tapestry-user-unsubscribe@jakarta.apache.org
>>>For additional commands, e-mail: tapestry-user-help@jakarta.apache.org
>>>
>>>
>>>
>>>
>>>
>>>
>>---------------------------------------------------------------------
>>To unsubscribe, e-mail: tapestry-user-unsubscribe@jakarta.apache.org
>>For additional commands, e-mail: tapestry-user-help@jakarta.apache.org
>>
>>
>>
>>
>
>
>
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Re: 'Tapestry in Action' example question
Posted by webtekie <we...@gmail.com>.
So the casting class is just sort of Bean where I have all my getters and
setters for variables (according to
http://wiki.apache.org/jakarta-tapestry/MoreFrequentlyAskedQuestions that
Shing referenced)?
On 4/13/05, Jamie <ja...@dang.com> wrote:
>
> It's another page!
>
> The code says:
>
> get the page called "ToppingsResult";
> set the property "toppings" to toppings;
> go to the page.
>
>
> webtekie wrote:
>
> >In the book there is an example on use of html forms and combo boxes.
> >One piece of code I don't quite understand:
> >
> >public void selectToppings(IRequestCycle cycle)
> >{
> > String toppings = getToppingsList();
> > ToppingsResult page =
> > (ToppingsResult) cycle.getPage("ToppingsResult");
> > page.setToppings(toppings);
> > cycle.activate(page);
> >}
> >
> >What is the purpose of ToppingsResult class, what exectly does it cast?
> >
> >thanks,
> >webtekie
> >
> >---------------------------------------------------------------------
> >To unsubscribe, e-mail: tapestry-user-unsubscribe@jakarta.apache.org
> >For additional commands, e-mail: tapestry-user-help@jakarta.apache.org
> >
> >
> >
> >
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: tapestry-user-unsubscribe@jakarta.apache.org
> For additional commands, e-mail: tapestry-user-help@jakarta.apache.org
>
>
Re: 'Tapestry in Action' example question
Posted by Jamie <ja...@dang.com>.
It's another page!
The code says:
get the page called "ToppingsResult";
set the property "toppings" to toppings;
go to the page.
webtekie wrote:
>In the book there is an example on use of html forms and combo boxes.
>One piece of code I don't quite understand:
>
>public void selectToppings(IRequestCycle cycle)
>{
> String toppings = getToppingsList();
> ToppingsResult page =
> (ToppingsResult) cycle.getPage("ToppingsResult");
> page.setToppings(toppings);
> cycle.activate(page);
>}
>
>What is the purpose of ToppingsResult class, what exectly does it cast?
>
>thanks,
>webtekie
>
>---------------------------------------------------------------------
>To unsubscribe, e-mail: tapestry-user-unsubscribe@jakarta.apache.org
>For additional commands, e-mail: tapestry-user-help@jakarta.apache.org
>
>
>
>
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Re: 'Tapestry in Action' example question
Posted by Andy Pahne <a....@skaffen.de>.
You are requesting the next page from the request cycle. That is the
ToppingsResult(Page). Because cycle.getPage("...") returns IPage, you
would not be able to execute setToppings(...). By casting to the
concrete implementation of the ToppingsResult page, you can.
webtekie schrieb:
> In the book there is an example on use of html forms and combo boxes.
> One piece of code I don't quite understand:
>
> public void selectToppings(IRequestCycle cycle)
> {
> String toppings = getToppingsList();
> ToppingsResult page =
> (ToppingsResult) cycle.getPage("ToppingsResult");
> page.setToppings(toppings);
> cycle.activate(page);
> }
>
> What is the purpose of ToppingsResult class, what exectly does it cast?
>
> thanks,
> webtekie
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: tapestry-user-unsubscribe@jakarta.apache.org
> For additional commands, e-mail: tapestry-user-help@jakarta.apache.org
>
>
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