I am writing a document about the design of my struts application and
I have difficulites to explain the view components behavior.
It is probabaly because I don't understant well how the view part of
the
Struts framework runs.
Here as I work and thank you in advance to indicate to me that it is
the best method if it is not this one.
All the data which I wish to display is reprensted in the form of
JavaBean. Through the action class
I ask to the remote application server a XML description of the
businness object and then I fill a JavaBean instance.
In the JSP I use the bean tag library (bean:write for example) to
display data.
In the cas of the view must accept input from users, I have used an
DynaActionForm (or
FormBean I think it is two words for the same context isn't it ?).
I define a <form-property> for each input of the user. Then in the
JSP page I add the tag
<html:form> and <html:text property= > to point on a specif property
in the case or I need
to save the value of the input user, I defined a JavaBean class to
store this information.
The JavaBean is updated in the Action class, with this method:
DynaValidatorForm loginForm = (DynaValidatorForm)form;
User userInfo;
String userName = (String)(loginForm.get("userName"));
String password = (String)(loginForm.get("password"));
userInfo.setPassword(password);
userInfo.setUserName(userName);
Is it the best think to do with an aim of ensuring
synchronization between FormBean and Business Delegates/Value objects .
We have the impression to duplicate variables that are in your Value
Objects in your form object.
The code example describes the link FormBean -> JavaBean (value
object). But I never use
the link JavaBean (value object) -> FormBean because in this case I
used the bean:write tag.
I am not perhaps very clear to excuse me but it is undoubtedly with
the fact that I have difficulties to understand well how runs the Struts
view components (FormBean).
if somebody has a diagram which explains this mechanism thank you
to send it.
Sandra
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