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Other option would be to use free products like
beanshell to give you access to the local variables - you could build
facade class dynamically or just provide "transparency gateway" proxy. The fact
that you are converting J2EE application indicates that amount of data is not
significant, so the cost is not going to be an issue, and you can reuse proxy
for subsequent calls.
In the end, it would be just a migration support
excercise, as your current J2EE code will be changing so much, it would not make
sense to keep the old one - Java interpreter is fine as long as it is not high
call volume system.
HTH,
Anatole Tartakovsky
----- Original Message -----
Sent: Tuesday, January 24, 2006 8:59
AM
Subject: [flexcoders] Re: Java
POJO/Action Script question
Ahh yes, the same J2EE struggles with property
setting. As Doug says
you do not want to be calling a million setters
on a remote object.
You are better off refactoring this to either create a
new Value
Object, or to treat your existing class itself as a value
object.
So rather then getting a remote reference to say
UserProfileForm, then
calling a million getters and setters, I would create
a POJO which
returns the UserProfileForm as a return type. Then call
all your
setters locally, and pass it back up to the server as the
parameter to
another POJO method call.
The second option is to add a
new Value Object property to the
UserProfileForm. Again create the
stub, call all the setters on the
local value object, then call one call on
the UserProfileForm to
return this coarsly grained Value Object.
You
need to keep network calls in mind in your architecture. There is
a
graveyard filled with failed J2EE projects who ignored the network
and the
effects of not architecting around seriously reducing the
number and size
of remote calls.
--
Dave Wolf
Cynergy Systems,
Inc.
Macromedia Flex Alliance Partner
http://www.cynergysystems.com
Email:
[EMAIL PROTECTED]
Office: 866-CYNERGY
--- In
[email protected], "douglowder" <[EMAIL PROTECTED]>
wrote:
>
> Flex 1.5 does a pretty good job of automatically
translating Java
> types to ActionScript, but only for members that are
declared
> public, not private. So, if you want to continue using
your getter
> routines for private members in your existing classes, be
prepared
> to make a lot of calls to your remote object. You
could also create
> a new "facade" Java class for mapping purposes,
which would have
> public members for all the variables you want to
expose to
> ActionScript, and have that class make all the calls to
your
> existing class's getters to initialize those public
members. You
> can then refer to the variables by name (the same
name as in the
> Java class) from within ActionScript.
>
>
Another thing to keep in mind is that datagrids expect to be passed
>
arrays (actually, anything that implements the DataProvider
>
interface) of objects, not a single object. If your Java calls are
> returning a single object instead of a list of objects, use
>
mx.utils.ArrayUtil.toArray() on the result to convert it to an array
>
in ActionScript.
>
> Doug
>
>
> --- In
[email protected], "sshriyan27" <[EMAIL PROTECTED]>
>
wrote:
> >
> > I'm new to Flex we're trying evaluate in our
company whether we
> > should use FLEX or not. Right we have Java,
Struts based
> application.
> >
> > I have a simple
question, i have an Object and still strugling to
> > map that to an
action script and datagrid.
> > How do i display values of
UserProfileForm in datagrid, like in
> > Struts i used to do
CloserResultsForm.userProfileForm.firstname
> ();
> > Can some
one explain this to me.
> > ** I can get the Single object to get
displayed but not the
> > inhertited ones.
> >
>
> public class CloserResultsForm implements Serializable{
> >
private UserProfileForm
userProfileForm;
> > }
> >
> > public class
UserProfileForm {
> > private String
username=null;
> > private int
userid;
> > private String
password=null;
> > private String
firstname=null;
> > private String
lastname=null;
> > private String
roleName=null;
> >
>
> public UserProfileForm(){
>
>
>
> }
> > .... // then getters and
setters for the above
> > }
>
>
>
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