This sounds like just what i need, I was just thinking of putting in EJB because i
thought it was the right way to go, but i can see that EJB's are
fast becoming the dinosaurs of J2EE.
I have just a few questions relating not using EJB's as a service layer. Later on we
will want to implement Web Services, my design now has to cater
for that. Any suggestions?
Also, I've looked at the xPetstore using WW and Hibernate,and i see there is cool
transaction handling..as below..
It just seems to me that there's a lot of duplicate code around starting Hibernate
Sessions etc, I'm just really wanting to know if the xpetstore is a
good place to base a project on, if its optimal enuf. i'd like to use it as the basic
format of my new project.
Also, usually session EJB would be used for all your business logic etc, where will
that go now, without an EJB session/service layer?
=========================================================
protected String doExecute( )
throws Exception
{
Transaction tx = null;
Session s = getHibernateSession( );
String customerId = _customer.getUserId( );
try
{
tx = s.beginTransaction( );
/* Make sure that the user-id is unique */
try
{
Customer c = ( Customer ) s.load( Customer.class, customerId );
if ( !c.getUserId( ).equalsIgnoreCase( _customer.getUserId( ) ) )
{
addError( "customer", getText( "duplicate_account" ) );
return ERROR;
}
}
catch ( ObjectNotFoundException o ) {}
/* Make sure that the email is unique */
String oql = "FROM cst IN CLASS " + Customer.class + " WHERE
cst.email=?";
Collection col = s.find( oql, _customer.getEmail( ), Hibernate.STRING );
if ( col.size( ) > 0 )
{
Customer c = ( Customer ) col.iterator( ).next( );
if ( !c.getUserId( ).equalsIgnoreCase( customerId ) )
{
addError( "customer", getText( "duplicate_email" ) );
return ERROR;
}
}
save( _customer, s );
tx.commit( );
return SUCCESS;
}
catch ( Exception e )
{
_log.error( "Unexpected error", e );
if ( tx != null )
{
tx.rollback( );
}
throw e;
}
finally
{
s.close( );
}
}
-----Original Message-----
From: Ben Alex [mailto:[EMAIL PROTECTED]
Sent: Monday, July 28, 2003 11:51 PM
To: [EMAIL PROTECTED]
Subject: Re: [OS-webwork] examples examples examples...looked at
xpetstore
> Im also interested in how the ClientDispatcher works?
> Is the ValueStack available on the client side? IE: Can I
> call an action on the server via the ClientDispatcher, and
> access the resultant in a ValueStack on my Swing client? If
> so... COOL!!!! And how the hell do you do that???
I have submitted a WW2 ClientDispatcher into Jira. It also includes a very
basic demo SWING application that takes advantage of GUI progress monitoring
(eg sending request to remote, remote processing, receiving reply etc). You
can get the files here:
http://jira.opensymphony.com/secure/ViewIssue.jspa?key=WW-234
Cheers
Ben
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