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Posted to users@wicket.apache.org by Constantin Y <c....@gmail.com> on 2008/01/30 18:33:14 UTC
Simple edit form and models
Hi all,
First of all I want to congratulate Wicket guys for their work.
Until today I have developed applications based mainly on SWT/RCP and
JSP/Servlets.
Currently we are evaluating various frameworks in order to initiate a new
project, which will expose many of our in-house developed system (SWT/RCP)
functions through web.
It seems that Wicket is very close to what we are looking for, because more
or less we have the same logic in our gui applications.
I am trying to create a common template for edit forms responsible to edit
properties of a single pojo. In general, I want to have fool control over
the synchronization between the form’s data and pojo’s fields.
I am posting some simple code.
I would appreciate if anyone has the time to take a look and tell me if I am
following a right approach about the models and the binding technique.
Is it too memory expensive to keep instances of pojos inside the form?
Does the session keeps information for all pages or just for the current
page?
Thanks in advance
http://www.nabble.com/file/p15186893/FormInput.html FormInput.html
http://www.nabble.com/file/p15186893/FormInput.java FormInput.java
http://www.nabble.com/file/p15186893/FormData.java FormData.java
http://www.nabble.com/file/p15186893/Person.java Person.java
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Re: Simple edit form and models
Posted by Constantin Y <c....@gmail.com>.
The reason is rather simple. We have already an in-house developed XUL-like
framework which provides all necessary information needed to construct a gui
form dynamically (Controls, Masks, Security etc).
My first thought is to reuse these xml files to add() controls dynamically
to a wicket form. So, if all controls (textfields, buttons etc) are created
automatically from an abstract class then i need an abstract data wrapper,
something like the FormData class, to hold the model's data(?).
Then the "only" code remaining to be written would be dummy methods like
populateFormData() and captureFormData(), which can be written easily by
junior (or sometimes aged) programmers not so receptive to new techs.
But maybe i' m wrong. I need to spend a lot more time with wicket to decide
the right direction for my team. Fortunately wicket is really fun !
Edvin Syse wrote:
>
>> First of all I want to congratulate Wicket guys for their work.
>> Until today I have developed applications based mainly on SWT/RCP and
>> JSP/Servlets.
>> Currently we are evaluating various frameworks in order to initiate a new
>> project, which will expose many of our in-house developed system
>> (SWT/RCP)
>> functions through web.
>> It seems that Wicket is very close to what we are looking for, because
>> more
>> or less we have the same logic in our gui applications.
>> I am trying to create a common template for edit forms responsible to
>> edit
>> properties of a single pojo. In general, I want to have fool control over
>> the synchronization between the form’s data and pojo’s fields.
>> I am posting some simple code.
>> I would appreciate if anyone has the time to take a look and tell me if I
>> am
>> following a right approach about the models and the binding technique.
>
> Out of curiosity - what are you going to do that needs this "fool control"
> over the binding process? I find in most cases that using
> CompoundPropertyModel for the whole form and overriding some fields with
> another PropertyModel for example is sufficient in almost every
> usecase. I would do something like:
>
> public class InputForm extends Form {
> public InputForm(String id, IModel model) {
> super(id, model);
>
> add(new TextField("personCode"));
> add(new TextField("lastname"));
> add(new TextField("someSpecialField", new PropertyModel(someOtherObject,
> "fieldname"));
>
> add(new Button("save") {
> @Override public void onSubmit() {
> // Save
> }
> });
> }
> }
>
> Wicket takes care of all the manual labour concerning binding you are used
> to from RCP-programming, so why not just let it shine? :)
>
> > Is it too memory expensive to keep instances of pojos inside the form?
> > Does the session keeps information for all pages or just for the
> current
> > page?
>
> Normally you supply the form with a IModel, and depending on the
> size/nature of the model object you would use a LoadableModel to avoid
> saving the whole object when you move on from that page.
>
> Wicket 1.3 now uses SecondLevelCacheSessionStore per default, and I think
> only the current page is in memory, and that subsequent pages are
> saved off to disk, so normally you don't need to think about optimizing
> for memory usage unless you have a very special case on your hands.
>
> -- Edvin
>
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>
>
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Re: Simple edit form and models
Posted by Edvin Syse <ed...@sysedata.no>.
> First of all I want to congratulate Wicket guys for their work.
> Until today I have developed applications based mainly on SWT/RCP and
> JSP/Servlets.
> Currently we are evaluating various frameworks in order to initiate a new
> project, which will expose many of our in-house developed system (SWT/RCP)
> functions through web.
> It seems that Wicket is very close to what we are looking for, because more
> or less we have the same logic in our gui applications.
> I am trying to create a common template for edit forms responsible to edit
> properties of a single pojo. In general, I want to have fool control over
> the synchronization between the form’s data and pojo’s fields.
> I am posting some simple code.
> I would appreciate if anyone has the time to take a look and tell me if I am
> following a right approach about the models and the binding technique.
Out of curiosity - what are you going to do that needs this "fool control" over the binding process? I find in most cases that using
CompoundPropertyModel for the whole form and overriding some fields with another PropertyModel for example is sufficient in almost every
usecase. I would do something like:
public class InputForm extends Form {
public InputForm(String id, IModel model) {
super(id, model);
add(new TextField("personCode"));
add(new TextField("lastname"));
add(new TextField("someSpecialField", new PropertyModel(someOtherObject, "fieldname"));
add(new Button("save") {
@Override public void onSubmit() {
// Save
}
});
}
}
Wicket takes care of all the manual labour concerning binding you are used to from RCP-programming, so why not just let it shine? :)
> Is it too memory expensive to keep instances of pojos inside the form?
> Does the session keeps information for all pages or just for the current
> page?
Normally you supply the form with a IModel, and depending on the size/nature of the model object you would use a LoadableModel to avoid
saving the whole object when you move on from that page.
Wicket 1.3 now uses SecondLevelCacheSessionStore per default, and I think only the current page is in memory, and that subsequent pages are
saved off to disk, so normally you don't need to think about optimizing for memory usage unless you have a very special case on your hands.
-- Edvin
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Re: Simple edit form and models
Posted by Igor Vaynberg <ig...@gmail.com>.
just out of curiosity, why such a requirement instead of binding
directly to a pojo?
-igor
On Jan 30, 2008 9:33 AM, Constantin Y <c....@gmail.com> wrote:
>
> Hi all,
>
> First of all I want to congratulate Wicket guys for their work.
> Until today I have developed applications based mainly on SWT/RCP and
> JSP/Servlets.
> Currently we are evaluating various frameworks in order to initiate a new
> project, which will expose many of our in-house developed system (SWT/RCP)
> functions through web.
> It seems that Wicket is very close to what we are looking for, because more
> or less we have the same logic in our gui applications.
> I am trying to create a common template for edit forms responsible to edit
> properties of a single pojo. In general, I want to have fool control over
> the synchronization between the form's data and pojo's fields.
> I am posting some simple code.
> I would appreciate if anyone has the time to take a look and tell me if I am
> following a right approach about the models and the binding technique.
>
> Is it too memory expensive to keep instances of pojos inside the form?
> Does the session keeps information for all pages or just for the current
> page?
>
> Thanks in advance
>
> http://www.nabble.com/file/p15186893/FormInput.html FormInput.html
> http://www.nabble.com/file/p15186893/FormInput.java FormInput.java
> http://www.nabble.com/file/p15186893/FormData.java FormData.java
> http://www.nabble.com/file/p15186893/Person.java Person.java
>
> --
> View this message in context: http://www.nabble.com/Simple-edit-form-and-models-tp15186893p15186893.html
> Sent from the Wicket - User mailing list archive at Nabble.com.
>
>
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> To unsubscribe, e-mail: users-unsubscribe@wicket.apache.org
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Re: Simple edit form and models
Posted by Igor Vaynberg <ig...@gmail.com>.
there is wicketstuff-crud project in wicketstuff that generates all
four crud views....
-igor
On Jan 31, 2008 3:28 AM, Constantin Y <c....@gmail.com> wrote:
>
> Nice work Ned! Actually this approach is very close to what i am trying to
> do.
>
> Thanks a lot
>
>
> Ned Collyer wrote:
> >
> > You may be interested in something like the bean editor webcast linked
> > from here
> > http://herebebeasties.com/2007-08-17/wicket-bean-editor/
> >
> > With a bit of customisation you should be able to bend it to suit your
> > needs for any of your pojos.
> >
> > Rgds
> >
> > Ned
> >
> >
> > Constantin Y wrote:
> >>
> >> First of all I want to congratulate Wicket guys for their work.
> >> Until today I have developed applications based mainly on SWT/RCP and
> >> JSP/Servlets.
> >> Currently we are evaluating various frameworks in order to initiate a new
> >> project, which will expose many of our in-house developed system
> >> (SWT/RCP) functions through web.
> >> It seems that Wicket is very close to what we are looking for, because
> >> more or less we have the same logic in our gui applications.
> >> I am trying to create a common template for edit forms responsible to
> >> edit properties of a single pojo. In general, I want to have fool control
> >> over the synchronization between the form's data and pojo's fields.
> >> I am posting some simple code.
> >> I would appreciate if anyone has the time to take a look and tell me if I
> >> am following a right approach about the models and the binding technique.
> >>
> >
> >
>
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> View this message in context: http://www.nabble.com/Simple-edit-form-and-models-tp15186893p15202600.html
>
> Sent from the Wicket - User mailing list archive at Nabble.com.
>
>
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Re: Simple edit form and models
Posted by Constantin Y <c....@gmail.com>.
Nice work Ned! Actually this approach is very close to what i am trying to
do.
Thanks a lot
Ned Collyer wrote:
>
> You may be interested in something like the bean editor webcast linked
> from here
> http://herebebeasties.com/2007-08-17/wicket-bean-editor/
>
> With a bit of customisation you should be able to bend it to suit your
> needs for any of your pojos.
>
> Rgds
>
> Ned
>
>
> Constantin Y wrote:
>>
>> First of all I want to congratulate Wicket guys for their work.
>> Until today I have developed applications based mainly on SWT/RCP and
>> JSP/Servlets.
>> Currently we are evaluating various frameworks in order to initiate a new
>> project, which will expose many of our in-house developed system
>> (SWT/RCP) functions through web.
>> It seems that Wicket is very close to what we are looking for, because
>> more or less we have the same logic in our gui applications.
>> I am trying to create a common template for edit forms responsible to
>> edit properties of a single pojo. In general, I want to have fool control
>> over the synchronization between the form’s data and pojo’s fields.
>> I am posting some simple code.
>> I would appreciate if anyone has the time to take a look and tell me if I
>> am following a right approach about the models and the binding technique.
>>
>
>
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Re: Simple edit form and models
Posted by Ned Collyer <ne...@gmail.com>.
You may be interested in something like the bean editor webcast linked from
here
http://herebebeasties.com/2007-08-17/wicket-bean-editor/
With a bit of customisation you should be able to bend it to suit your needs
for any of your pojos.
Rgds
Ned
Constantin Y wrote:
>
> First of all I want to congratulate Wicket guys for their work.
> Until today I have developed applications based mainly on SWT/RCP and
> JSP/Servlets.
> Currently we are evaluating various frameworks in order to initiate a new
> project, which will expose many of our in-house developed system (SWT/RCP)
> functions through web.
> It seems that Wicket is very close to what we are looking for, because
> more or less we have the same logic in our gui applications.
> I am trying to create a common template for edit forms responsible to edit
> properties of a single pojo. In general, I want to have fool control over
> the synchronization between the form’s data and pojo’s fields.
> I am posting some simple code.
> I would appreciate if anyone has the time to take a look and tell me if I
> am following a right approach about the models and the binding technique.
>
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