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Posted to users@myfaces.apache.org by ma...@accenture.com on 2007/11/12 13:03:42 UTC
How know witch data in changed
Hello, I need to know witch data of a view is changed. Is there a way to
do that with no specific code? I'm going to do it in a PhaseListener
that compare data of each component before and after "apply Request"
phase.
What do you think?
Any suggestion is Appreciated.
Regards
Mario
This message is for the designated recipient only and may contain privileged, proprietary, or otherwise private information. If you have received it in error, please notify the sender immediately and delete the original. Any other use of the email by you is prohibited.
Re: How know witch data in changed
Posted by Gerhard Petracek <ge...@gmail.com>.
hello mario,
today it's my third and last try to send this answer :-/
(at the moment there is a strange situation - some of my mails are not
delivered and some others are (but they were send to the same address(es) at
a later point of time compared to the undelivered mails) - at the moment the
web-interface of gmail is also a bit confused - mails aren't displayed
correctly and so on (really strange) - so i try to answer directly to your
first post - it's just a further try to resend my answer which was send
before the second answer of cagatay.)
@cagatay: thank you for your answer – it was the reason why i recognized
that my answer wasn't delivered (my answer included basically the same
statement as yours) – with this mail i try to resend my previous mail.
(*sorry* if sooner or later the two other mails will be delivered and the
answer is duplicated)
my previous answer:
there is also a second possible solution for this problem.
advantage: you don't have to walk through the component tree once more. (if
i got the idea mentioned by cagatay right)
disadvantage: it's maybe a bit more work than the PhaseListener approach.
you can decorate all renderers and manually add your ValueChangeListener (it
is real adding - no replacement).
if you would like to choose this solution you are welcome to look at the
implementation of jtracc (http://jtracc.org or directly at
http://code.google.com/p/jtracc/source) - there i implemented such a wrapper
(TranslationRendererWrapper).
it's an other domain so you can ignore what's going on in this wrapper in
detail (you only need the principle).
in your case you have to add a ValueChangeListener manually by using code
like:
( (EditableValueHolder) component ).addValueChangeListener(...)
before you do that you have to check if the component is a component which
implements the EditableValueHolder interface!
after adding the listener you can simply delegate to the decorated renderer.
regards,
gerhard
2007/11/12, mario.buonopane@accenture.com <ma...@accenture.com>:
>
> Hello, I need to know witch data of a view is changed. Is there a way to
> do that with no specific code? I'm going to do it in a PhaseListener that
> compare data of each component before and after "apply Request" phase.
>
>
>
> What do you think?
>
>
>
> Any suggestion is Appreciated.
>
>
>
> Regards
>
> Mario
>
>
>
> ------------------------------
> This message is for the designated recipient only and may contain
> privileged, proprietary, or otherwise private information. If you have
> received it in error, please notify the sender immediately and delete the
> original. Any other use of the email by you is prohibited.
>
>
--
http://www.irian.at
Your JSF powerhouse -
JSF Consulting, Development and
Courses in English and German
Professional Support for Apache MyFaces
Re: How know witch data in changed
Posted by Adrian Mitev <ad...@googlemail.com>.
Why don't you use valueChangeListener ?
2007/11/12, mario.buonopane@accenture.com <ma...@accenture.com>:
>
> Hello, I need to know witch data of a view is changed. Is there a way to
> do that with no specific code? I'm going to do it in a PhaseListener that
> compare data of each component before and after "apply Request" phase.
>
>
>
> What do you think?
>
>
>
> Any suggestion is Appreciated.
>
>
>
> Regards
>
> Mario
>
>
>
> ------------------------------
> This message is for the designated recipient only and may contain
> privileged, proprietary, or otherwise private information. If you have
> received it in error, please notify the sender immediately and delete the
> original. Any other use of the email by you is prohibited.
>
>
Re: How know witch data in changed
Posted by Gerhard Petracek <ge...@gmail.com>.
hello mario,
@cagatay: thank you for your answer – it was the reason why i recognized
that my answer wasn't delivered (my answer included basically the same
statement as yours) – with this mail i try to resend my previous mail.
(without links – maybe it's the reason for the lost mail?!???)
->
@mario: you are welcome to visit the irian website -> products / jtracc for
further information - and follow the links.
(*sorry* if sooner or later my first mail will be delivered and the answer
is duplicated)
my previous answer:
there is also a second possible solution for this problem.
advantage: you don't have to walk through the component tree once more. (if
i got the idea mentioned by cagatay right)
disadvantage: it's maybe a bit more work than the PhaseListener approach
mentioned by cagatay.
you can decorate all renderers and manually add (it is real adding - no
replacement) your ValueChangeListener.
if you would like to choose this solution you are welcome to look at the
implementation of jtracc (see info above) - there i implemented such a
wrapper (TranslationRendererWrapper).
it's an other domain so you can ignore what's going on in this wrapper in
detail.
in your case you have to add a ValueChangeListener manually by using code
like:
( (EditableValueHolder) component ).addValueChangeListener(...)
before you do that you have to check if the component is a component which
implements the EditableValueHolder interface!
after adding the listener you can simply delegate to the decorated renderer.
regards,
gerhard
2007/11/12, Cagatay Civici <ca...@gmail.com>:
>
> Hi,
>
> From the docs;
>
> addValueChangeListener(javax.faces.event.ValueChangeListener listener)
> Add a new ValueChangeListener to the set of listeners interested in
> being notified when ValueChangeEvents occur.
>
> In addition check if the listener is not already added to the
> listeners list before using this.
>
> Cagatay
>
> On Nov 12, 2007 4:10 PM, <ma...@accenture.com> wrote:
> > Hi Cheers, but if a componenet already has a ValueChangeListener setted
> > by the programmer for other reasons? The new ValueChangeListener si
> > added or replace existings?
> >
> > Thank, Mario
> >
> >
> > -----Original Message-----
> > From: Cagatay Civici [mailto:cagatay.civici@gmail.com]
> > Sent: 12 novembre 2007 14.50
> > To: MyFaces Discussion
> > Subject: Re: How know witch data in changed
> >
> > Hi,
> >
> > A phaselistener may work here, in after phase of restore view,
> > traverse the component tree, if the component is an
> > editablevalueholder,
> > cast the component to editablevalueholder and add the
> > valuechangelistener by addValueChangeListener or
> > setValueChangeListener.
> >
> > A valuechangelistener implementation needs a processValueChange method
> > or it can be a method binding, in your case the first option is a
> > better alternative
> >
> > See editableValueHolder for more info.
> >
> > Cheers,
> >
> > Cagatay Civici
> > cagatay@apache.org
> > ps3 network id : facescontext
> >
> > On Nov 12, 2007 3:06 PM, <ma...@accenture.com> wrote:
> > >
> > >
> > >
> > >
> > > Is there a way to set the same ValueChangeListener to all component of
> > all
> > > view without specific code in the page? I don't want leave my
> > programmers
> > > manage the logic to know witch component is changed, because I need to
> > > managed this kind of problem in the framework code.
> > >
> > >
> > >
> > > Any suggestions?
> > >
> > >
> > >
> > > Thanks, M.
> > >
> > >
> > >
> > > ________________________________
> > >
> > >
> > > From: Gerhard Petracek [mailto:gerhard.petracek@gmail.com]
> > > Sent: 12 novembre 2007 13.34
> > > To: MyFaces Discussion
> > > Subject: Re: How know witch data in changed
> > >
> > >
> > >
> > >
> > > hello mario,
> > >
> > > sounds like you are searching for the mechanism of
> > ValueChangeListeners.
> > >
> > > regards,
> > > gerhard
> > >
> > >
> > >
> > >
> > >
> > > 2007/11/12, mario.buonopane@accenture.com
> > <ma...@accenture.com>:
> > >
> > >
> > >
> > > Hello, I need to know witch data of a view is changed. Is there a way
> > to do
> > > that with no specific code? I'm going to do it in a PhaseListener that
> > > compare data of each component before and after "apply Request" phase.
> > >
> > >
> > >
> > > What do you think?
> > >
> > >
> > >
> > > Any suggestion is Appreciated.
> > >
> > >
> > >
> > > Regards
> > >
> > > Mario
> > >
> > >
> > >
> > > ________________________________
> > >
> > >
> > > This message is for the designated recipient only and may contain
> > > privileged, proprietary, or otherwise private information. If you have
> > > received it in error, please notify the sender immediately and delete
> > the
> > > original. Any other use of the email by you is prohibited.
> > >
> > >
> > >
> > >
> > > --
> > >
> > > http://www.irian.at
> > >
> > > Your JSF powerhouse -
> > > JSF Consulting, Development and
> > > Courses in English and German
> > >
> > > Professional Support for Apache MyFaces
> > >
> > >
> > >
> > >
> > >
> > > This message is for the designated recipient only and may contain
> > > privileged, proprietary, or otherwise private information. If you have
> > > received it in error, please notify the sender immediately and delete
> > the
> > > original. Any other use of the email by you is prohibited.
> >
> >
> > This message is for the designated recipient only and may contain
> privileged, proprietary, or otherwise private information. If you have
> received it in error, please notify the sender immediately and delete the
> original. Any other use of the email by you is prohibited.
> >
>
--
http://www.irian.at
Your JSF powerhouse -
JSF Consulting, Development and
Courses in English and German
Professional Support for Apache MyFaces
Re: How know witch data in changed
Posted by Cagatay Civici <ca...@gmail.com>.
Hi,
>From the docs;
addValueChangeListener(javax.faces.event.ValueChangeListener listener)
Add a new ValueChangeListener to the set of listeners interested in
being notified when ValueChangeEvents occur.
In addition check if the listener is not already added to the
listeners list before using this.
Cagatay
On Nov 12, 2007 4:10 PM, <ma...@accenture.com> wrote:
> Hi Cheers, but if a componenet already has a ValueChangeListener setted
> by the programmer for other reasons? The new ValueChangeListener si
> added or replace existings?
>
> Thank, Mario
>
>
> -----Original Message-----
> From: Cagatay Civici [mailto:cagatay.civici@gmail.com]
> Sent: 12 novembre 2007 14.50
> To: MyFaces Discussion
> Subject: Re: How know witch data in changed
>
> Hi,
>
> A phaselistener may work here, in after phase of restore view,
> traverse the component tree, if the component is an
> editablevalueholder,
> cast the component to editablevalueholder and add the
> valuechangelistener by addValueChangeListener or
> setValueChangeListener.
>
> A valuechangelistener implementation needs a processValueChange method
> or it can be a method binding, in your case the first option is a
> better alternative
>
> See editableValueHolder for more info.
>
> Cheers,
>
> Cagatay Civici
> cagatay@apache.org
> ps3 network id : facescontext
>
> On Nov 12, 2007 3:06 PM, <ma...@accenture.com> wrote:
> >
> >
> >
> >
> > Is there a way to set the same ValueChangeListener to all component of
> all
> > view without specific code in the page? I don't want leave my
> programmers
> > manage the logic to know witch component is changed, because I need to
> > managed this kind of problem in the framework code.
> >
> >
> >
> > Any suggestions?
> >
> >
> >
> > Thanks, M.
> >
> >
> >
> > ________________________________
> >
> >
> > From: Gerhard Petracek [mailto:gerhard.petracek@gmail.com]
> > Sent: 12 novembre 2007 13.34
> > To: MyFaces Discussion
> > Subject: Re: How know witch data in changed
> >
> >
> >
> >
> > hello mario,
> >
> > sounds like you are searching for the mechanism of
> ValueChangeListeners.
> >
> > regards,
> > gerhard
> >
> >
> >
> >
> >
> > 2007/11/12, mario.buonopane@accenture.com
> <ma...@accenture.com>:
> >
> >
> >
> > Hello, I need to know witch data of a view is changed. Is there a way
> to do
> > that with no specific code? I'm going to do it in a PhaseListener that
> > compare data of each component before and after "apply Request" phase.
> >
> >
> >
> > What do you think?
> >
> >
> >
> > Any suggestion is Appreciated.
> >
> >
> >
> > Regards
> >
> > Mario
> >
> >
> >
> > ________________________________
> >
> >
> > This message is for the designated recipient only and may contain
> > privileged, proprietary, or otherwise private information. If you have
> > received it in error, please notify the sender immediately and delete
> the
> > original. Any other use of the email by you is prohibited.
> >
> >
> >
> >
> > --
> >
> > http://www.irian.at
> >
> > Your JSF powerhouse -
> > JSF Consulting, Development and
> > Courses in English and German
> >
> > Professional Support for Apache MyFaces
> >
> >
> >
> >
> >
> > This message is for the designated recipient only and may contain
> > privileged, proprietary, or otherwise private information. If you have
> > received it in error, please notify the sender immediately and delete
> the
> > original. Any other use of the email by you is prohibited.
>
>
> This message is for the designated recipient only and may contain privileged, proprietary, or otherwise private information. If you have received it in error, please notify the sender immediately and delete the original. Any other use of the email by you is prohibited.
>
Re: How know witch data in changed
Posted by Gerhard Petracek <ge...@gmail.com>.
hello mario,
there is also a second possible solution for this problem.
advantage: you don't have to walk through the component tree once more.
disadvantage: it's maybe a bit more work than the PhaseListener approach
mentioned by cagatay.
you can decorate all renderers and manually add (it is real adding - no
replacement) your ValueChangeListener
if you would like to choose this solution you are welcome to look at the
implementation of jtracc (http://jtracc.org or direclty at
http://code.google.com/p/jtracc/source) - there i implemented such a wrapper
(TranslationRendererWrapper).
it's an other domain so you can ignore what's going on in this wrapper in
detail.
in your case you have to add a ValueChangeListener manually by using code
like:
( (EditableValueHolder) component ).addValueChangeListener(...) -- before
you do that you have to check if the current component is a component which
implements the EditableValueHolder interface!
after adding the listener you can simply delegate to the decorated renderer.
regards,
gerhard
2007/11/12, mario.buonopane@accenture.com <ma...@accenture.com>:
>
> Hi Cheers, but if a componenet already has a ValueChangeListener setted
> by the programmer for other reasons? The new ValueChangeListener si
> added or replace existings?
>
> Thank, Mario
>
> -----Original Message-----
> From: Cagatay Civici [mailto:cagatay.civici@gmail.com]
> Sent: 12 novembre 2007 14.50
> To: MyFaces Discussion
> Subject: Re: How know witch data in changed
>
> Hi,
>
> A phaselistener may work here, in after phase of restore view,
> traverse the component tree, if the component is an
> editablevalueholder,
> cast the component to editablevalueholder and add the
> valuechangelistener by addValueChangeListener or
> setValueChangeListener.
>
> A valuechangelistener implementation needs a processValueChange method
> or it can be a method binding, in your case the first option is a
> better alternative
>
> See editableValueHolder for more info.
>
> Cheers,
>
> Cagatay Civici
> cagatay@apache.org
> ps3 network id : facescontext
>
> On Nov 12, 2007 3:06 PM, <ma...@accenture.com> wrote:
> >
> >
> >
> >
> > Is there a way to set the same ValueChangeListener to all component of
> all
> > view without specific code in the page? I don't want leave my
> programmers
> > manage the logic to know witch component is changed, because I need to
> > managed this kind of problem in the framework code.
> >
> >
> >
> > Any suggestions?
> >
> >
> >
> > Thanks, M.
> >
> >
> >
> > ________________________________
> >
> >
> > From: Gerhard Petracek [mailto:gerhard.petracek@gmail.com]
> > Sent: 12 novembre 2007 13.34
> > To: MyFaces Discussion
> > Subject: Re: How know witch data in changed
> >
> >
> >
> >
> > hello mario,
> >
> > sounds like you are searching for the mechanism of
> ValueChangeListeners.
> >
> > regards,
> > gerhard
> >
> >
> >
> >
> >
> > 2007/11/12, mario.buonopane@accenture.com
> <ma...@accenture.com>:
> >
> >
> >
> > Hello, I need to know witch data of a view is changed. Is there a way
> to do
> > that with no specific code? I'm going to do it in a PhaseListener that
> > compare data of each component before and after "apply Request" phase.
> >
> >
> >
> > What do you think?
> >
> >
> >
> > Any suggestion is Appreciated.
> >
> >
> >
> > Regards
> >
> > Mario
> >
> >
> >
> > ________________________________
> >
> >
> > This message is for the designated recipient only and may contain
> > privileged, proprietary, or otherwise private information. If you have
> > received it in error, please notify the sender immediately and delete
> the
> > original. Any other use of the email by you is prohibited.
> >
> >
> >
> >
> > --
> >
> > http://www.irian.at
> >
> > Your JSF powerhouse -
> > JSF Consulting, Development and
> > Courses in English and German
> >
> > Professional Support for Apache MyFaces
> >
> >
> >
> >
> >
> > This message is for the designated recipient only and may contain
> > privileged, proprietary, or otherwise private information. If you have
> > received it in error, please notify the sender immediately and delete
> the
> > original. Any other use of the email by you is prohibited.
>
>
> This message is for the designated recipient only and may contain
> privileged, proprietary, or otherwise private information. If you have
> received it in error, please notify the sender immediately and delete the
> original. Any other use of the email by you is prohibited.
>
--
http://www.irian.at
Your JSF powerhouse -
JSF Consulting, Development and
Courses in English and German
Professional Support for Apache MyFaces
RE: How know witch data in changed
Posted by ma...@accenture.com.
Hi Cheers, but if a componenet already has a ValueChangeListener setted
by the programmer for other reasons? The new ValueChangeListener si
added or replace existings?
Thank, Mario
-----Original Message-----
From: Cagatay Civici [mailto:cagatay.civici@gmail.com]
Sent: 12 novembre 2007 14.50
To: MyFaces Discussion
Subject: Re: How know witch data in changed
Hi,
A phaselistener may work here, in after phase of restore view,
traverse the component tree, if the component is an
editablevalueholder,
cast the component to editablevalueholder and add the
valuechangelistener by addValueChangeListener or
setValueChangeListener.
A valuechangelistener implementation needs a processValueChange method
or it can be a method binding, in your case the first option is a
better alternative
See editableValueHolder for more info.
Cheers,
Cagatay Civici
cagatay@apache.org
ps3 network id : facescontext
On Nov 12, 2007 3:06 PM, <ma...@accenture.com> wrote:
>
>
>
>
> Is there a way to set the same ValueChangeListener to all component of
all
> view without specific code in the page? I don't want leave my
programmers
> manage the logic to know witch component is changed, because I need to
> managed this kind of problem in the framework code.
>
>
>
> Any suggestions?
>
>
>
> Thanks, M.
>
>
>
> ________________________________
>
>
> From: Gerhard Petracek [mailto:gerhard.petracek@gmail.com]
> Sent: 12 novembre 2007 13.34
> To: MyFaces Discussion
> Subject: Re: How know witch data in changed
>
>
>
>
> hello mario,
>
> sounds like you are searching for the mechanism of
ValueChangeListeners.
>
> regards,
> gerhard
>
>
>
>
>
> 2007/11/12, mario.buonopane@accenture.com
<ma...@accenture.com>:
>
>
>
> Hello, I need to know witch data of a view is changed. Is there a way
to do
> that with no specific code? I'm going to do it in a PhaseListener that
> compare data of each component before and after "apply Request" phase.
>
>
>
> What do you think?
>
>
>
> Any suggestion is Appreciated.
>
>
>
> Regards
>
> Mario
>
>
>
> ________________________________
>
>
> This message is for the designated recipient only and may contain
> privileged, proprietary, or otherwise private information. If you have
> received it in error, please notify the sender immediately and delete
the
> original. Any other use of the email by you is prohibited.
>
>
>
>
> --
>
> http://www.irian.at
>
> Your JSF powerhouse -
> JSF Consulting, Development and
> Courses in English and German
>
> Professional Support for Apache MyFaces
>
>
>
>
>
> This message is for the designated recipient only and may contain
> privileged, proprietary, or otherwise private information. If you have
> received it in error, please notify the sender immediately and delete
the
> original. Any other use of the email by you is prohibited.
This message is for the designated recipient only and may contain privileged, proprietary, or otherwise private information. If you have received it in error, please notify the sender immediately and delete the original. Any other use of the email by you is prohibited.
Re: How know witch data in changed
Posted by Cagatay Civici <ca...@gmail.com>.
Hi,
A phaselistener may work here, in after phase of restore view,
traverse the component tree, if the component is an
editablevalueholder,
cast the component to editablevalueholder and add the
valuechangelistener by addValueChangeListener or
setValueChangeListener.
A valuechangelistener implementation needs a processValueChange method
or it can be a method binding, in your case the first option is a
better alternative
See editableValueHolder for more info.
Cheers,
Cagatay Civici
cagatay@apache.org
ps3 network id : facescontext
On Nov 12, 2007 3:06 PM, <ma...@accenture.com> wrote:
>
>
>
>
> Is there a way to set the same ValueChangeListener to all component of all
> view without specific code in the page? I don't want leave my programmers
> manage the logic to know witch component is changed, because I need to
> managed this kind of problem in the framework code.
>
>
>
> Any suggestions?
>
>
>
> Thanks, M.
>
>
>
> ________________________________
>
>
> From: Gerhard Petracek [mailto:gerhard.petracek@gmail.com]
> Sent: 12 novembre 2007 13.34
> To: MyFaces Discussion
> Subject: Re: How know witch data in changed
>
>
>
>
> hello mario,
>
> sounds like you are searching for the mechanism of ValueChangeListeners.
>
> regards,
> gerhard
>
>
>
>
>
> 2007/11/12, mario.buonopane@accenture.com <ma...@accenture.com>:
>
>
>
> Hello, I need to know witch data of a view is changed. Is there a way to do
> that with no specific code? I'm going to do it in a PhaseListener that
> compare data of each component before and after "apply Request" phase.
>
>
>
> What do you think?
>
>
>
> Any suggestion is Appreciated.
>
>
>
> Regards
>
> Mario
>
>
>
> ________________________________
>
>
> This message is for the designated recipient only and may contain
> privileged, proprietary, or otherwise private information. If you have
> received it in error, please notify the sender immediately and delete the
> original. Any other use of the email by you is prohibited.
>
>
>
>
> --
>
> http://www.irian.at
>
> Your JSF powerhouse -
> JSF Consulting, Development and
> Courses in English and German
>
> Professional Support for Apache MyFaces
>
>
>
>
>
> This message is for the designated recipient only and may contain
> privileged, proprietary, or otherwise private information. If you have
> received it in error, please notify the sender immediately and delete the
> original. Any other use of the email by you is prohibited.
RE: How know witch data in changed
Posted by ma...@accenture.com.
Is there a way to set the same ValueChangeListener to all component of
all view without specific code in the page? I don't want leave my
programmers manage the logic to know witch component is changed, because
I need to managed this kind of problem in the framework code.
Any suggestions?
Thanks, M.
________________________________
From: Gerhard Petracek [mailto:gerhard.petracek@gmail.com]
Sent: 12 novembre 2007 13.34
To: MyFaces Discussion
Subject: Re: How know witch data in changed
hello mario,
sounds like you are searching for the mechanism of ValueChangeListeners.
regards,
gerhard
2007/11/12, mario.buonopane@accenture.com
<ma...@accenture.com>:
Hello, I need to know witch data of a view is changed. Is there a way to
do that with no specific code? I'm going to do it in a PhaseListener
that compare data of each component before and after "apply Request"
phase.
What do you think?
Any suggestion is Appreciated.
Regards
Mario
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Re: How know witch data in changed
Posted by Gerhard Petracek <ge...@gmail.com>.
hello mario,
sounds like you are searching for the mechanism of ValueChangeListeners.
regards,
gerhard
2007/11/12, mario.buonopane@accenture.com <ma...@accenture.com>:
>
> Hello, I need to know witch data of a view is changed. Is there a way to
> do that with no specific code? I'm going to do it in a PhaseListener that
> compare data of each component before and after "apply Request" phase.
>
>
>
> What do you think?
>
>
>
> Any suggestion is Appreciated.
>
>
>
> Regards
>
> Mario
>
>
>
> ------------------------------
> This message is for the designated recipient only and may contain
> privileged, proprietary, or otherwise private information. If you have
> received it in error, please notify the sender immediately and delete the
> original. Any other use of the email by you is prohibited.
>
>
--
http://www.irian.at
Your JSF powerhouse -
JSF Consulting, Development and
Courses in English and German
Professional Support for Apache MyFaces