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Posted to users@tapestry.apache.org by Michael Echerer <me...@tngtech.com> on 2004/10/12 14:17:48 UTC
Tapestry.fireObservedChange() question
Hi,
can somebody explain what fireObservedChange() is to be used for?
As far as I understand you must call it, when changing persistent properties
outside of the rewind phase. Is that true?
Why do you need to provide the "newValue" of the property? Isn't it enough to
tell "which" property of a component was changed, because setting the property
could be done by the normal setProperty() method before firing the change
notification.
To me it looks like you have to "set" the property value twice. With the
setProperty method and the fire method.
Hope someone can bring some light to this.
Cheers,
Michael
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Re: Tapestry.fireObservedChange() question
Posted by Howard Lewis Ship <hl...@gmail.com>.
fireObservedChange sends a property change event to the page's page
recorder; this utlimately results in the value being stored in the
HttpSession.
On Tue, 12 Oct 2004 14:17:48 +0200, Michael Echerer <me...@tngtech.com> wrote:
>
>
> Hi,
>
> can somebody explain what fireObservedChange() is to be used for?
>
> As far as I understand you must call it, when changing persistent properties
> outside of the rewind phase. Is that true?
>
> Why do you need to provide the "newValue" of the property? Isn't it enough to
> tell "which" property of a component was changed, because setting the property
> could be done by the normal setProperty() method before firing the change
> notification.
> To me it looks like you have to "set" the property value twice. With the
> setProperty method and the fire method.
>
> Hope someone can bring some light to this.
>
> Cheers,
> Michael
>
> ---------------------------------------------------------------------
> 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
http://howardlewisship.com
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Re: Contrib Library
Posted by Norbert Sándor <pr...@hotmail.com>.
<library id="contrib"
specification-path="/org/apache/tapestry/contrib/Contrib.library"/>
Use
<component id="contrib:Palette" .....
in your components.
Norbi
----- Original Message -----
From: "James Sherwood" <js...@romulin.com>
To: "Tapestry users" <ta...@jakarta.apache.org>
Sent: Tuesday, October 12, 2004 5:11 PM
Subject: Contrib Library
> I want to use the Palette component from the contrib library but I cannot
> seem to get access too it.
>
> In my application I have:
>
> <library id="Contrib"
> specification-path="/org/apache/tapestry/contrib/Contrib.library"/>
>
> But when I try to access the Palette jwc via my .page, It cannot see it
and
> says it is not in the framework namespace.
>
> I have used it before but I cannot remember what I am doing wrong
>
> Thanks in advance
>
> James
>
>
>
> ---------------------------------------------------------------------
> 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: Contrib Library
Posted by Howard Lewis Ship <hl...@gmail.com>.
If that's not working the likely culrprit may be that you haven't
named your application file properly. It is given the same name as
the servlet, so it's often "app.application".
On Tue, 12 Oct 2004 12:25:14 -0300, James Sherwood
<js...@romulin.com> wrote:
> I have tried that:
>
> <component id="selectBoards" type="Contrib:Palette"></component>
>
> but I get the error:
>
> Error Component 'Palette' not found in Contrib.
>
> Any ideas?
>
>
>
>
> ----- Original Message -----
> From: "Norbert Sándor" <pr...@hotmail.com>
> To: "Tapestry users" <ta...@jakarta.apache.org>
> Cc: <js...@romulin.com>
> Sent: Tuesday, October 12, 2004 11:58 AM
> Subject: Re: Contrib Library
>
> > st. me :))))
> >
> > The correct usage is
> >
> > <component id="palette" type="contrib:Palette">
> >
> > You should prefix the type of the component with the library id.
> >
> > Bye,
> > Norbi
> >
> > ----- Original Message -----
> > From: "James Sherwood" <js...@romulin.com>
> > To: "Tapestry users" <ta...@jakarta.apache.org>
> > Sent: Tuesday, October 12, 2004 5:11 PM
> > Subject: Contrib Library
> >
> >
> > > I want to use the Palette component from the contrib library but I
> cannot
> > > seem to get access too it.
> > >
> > > In my application I have:
> > >
> > > <library id="Contrib"
> > > specification-path="/org/apache/tapestry/contrib/Contrib.library"/>
> > >
> > > But when I try to access the Palette jwc via my .page, It cannot see it
> > and
> > > says it is not in the framework namespace.
> > >
> > > I have used it before but I cannot remember what I am doing wrong
> > >
> > > Thanks in advance
> > >
> > > James
> > >
> > >
> > >
> > > ---------------------------------------------------------------------
> > > 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
> 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
http://howardlewisship.com
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Re: Contrib Library
Posted by James Sherwood <js...@romulin.com>.
I have tried that:
<component id="selectBoards" type="Contrib:Palette"></component>
but I get the error:
Error Component 'Palette' not found in Contrib.
Any ideas?
----- Original Message -----
From: "Norbert Sándor" <pr...@hotmail.com>
To: "Tapestry users" <ta...@jakarta.apache.org>
Cc: <js...@romulin.com>
Sent: Tuesday, October 12, 2004 11:58 AM
Subject: Re: Contrib Library
> st. me :))))
>
> The correct usage is
>
> <component id="palette" type="contrib:Palette">
>
> You should prefix the type of the component with the library id.
>
> Bye,
> Norbi
>
> ----- Original Message -----
> From: "James Sherwood" <js...@romulin.com>
> To: "Tapestry users" <ta...@jakarta.apache.org>
> Sent: Tuesday, October 12, 2004 5:11 PM
> Subject: Contrib Library
>
>
> > I want to use the Palette component from the contrib library but I
cannot
> > seem to get access too it.
> >
> > In my application I have:
> >
> > <library id="Contrib"
> > specification-path="/org/apache/tapestry/contrib/Contrib.library"/>
> >
> > But when I try to access the Palette jwc via my .page, It cannot see it
> and
> > says it is not in the framework namespace.
> >
> > I have used it before but I cannot remember what I am doing wrong
> >
> > Thanks in advance
> >
> > James
> >
> >
> >
> > ---------------------------------------------------------------------
> > 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: Contrib Library
Posted by Norbert Sándor <pr...@hotmail.com>.
st. me :))))
The correct usage is
<component id="palette" type="contrib:Palette">
You should prefix the type of the component with the library id.
Bye,
Norbi
----- Original Message -----
From: "James Sherwood" <js...@romulin.com>
To: "Tapestry users" <ta...@jakarta.apache.org>
Sent: Tuesday, October 12, 2004 5:11 PM
Subject: Contrib Library
> I want to use the Palette component from the contrib library but I cannot
> seem to get access too it.
>
> In my application I have:
>
> <library id="Contrib"
> specification-path="/org/apache/tapestry/contrib/Contrib.library"/>
>
> But when I try to access the Palette jwc via my .page, It cannot see it
and
> says it is not in the framework namespace.
>
> I have used it before but I cannot remember what I am doing wrong
>
> Thanks in advance
>
> James
>
>
>
> ---------------------------------------------------------------------
> 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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Contrib Library
Posted by James Sherwood <js...@romulin.com>.
I want to use the Palette component from the contrib library but I cannot
seem to get access too it.
In my application I have:
<library id="Contrib"
specification-path="/org/apache/tapestry/contrib/Contrib.library"/>
But when I try to access the Palette jwc via my .page, It cannot see it and
says it is not in the framework namespace.
I have used it before but I cannot remember what I am doing wrong
Thanks in advance
James
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