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Subject: RE: Exit out of rowHandler
Date: Wed, 30 Jan 2008 18:31:59 -0700
Message-ID: <7A830B033BF360489B6EE305697CD09D0112A0F4@mailhost01>
Thread-Topic: Exit out of rowHandler
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From: "Chris Lamey" <clamey@localmatters.com>
To: <user-java@ibatis.apache.org>

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Yes, please keep backwards compatability within minor releases.

-----Original Message-----
From: Clinton Begin [mailto:clinton.begin@gmail.com]
Sent: Wed 1/30/2008 6:11 PM
To: user-java@ibatis.apache.org; lmeadors@apache.org
Subject: RE: Exit out of rowHandler
=20
Hehe...

Well, considering how much effort I've always put into iBATIS being =
backward
compatible, why break tradition now?  ;-)  We can use an adapter and =
create
a new RowHandler interface. =20

iBATIS 3.0 can merge them into one...as it won't be fully backward
compatible anyway. =20

Clinton

-----Original Message-----
From: larry.meadors@gmail.com [mailto:larry.meadors@gmail.com] On Behalf =
Of
Larry Meadors
Sent: January-30-08 4:43 PM
To: user-java@ibatis.apache.org
Subject: Re: Exit out of rowHandler

Meh, it'll break compatibility, but it adds a great deal of useful
functionality for very little cost. In addition, the 'fix' is to add a
"return true;" to existing code. I wouldn't consider that particularly
onerous...unless you have like 1000 row handlers, in which case, you
probably *deserve* some pain. ;-)

I think it's a great idea.

Larry


On Jan 30, 2008 2:45 PM, Jeff Butler <jeffgbutler@gmail.com> wrote:
> I can't think of any other use for the return value, so I like the =
idea.
> The only drawback is that this will break existing row handlers.  This
could
> be an argument in favor of the two parameter approach - because it =
could
be
> an overloaded method.  Of course, any change to the interface is going =
to
> cause headaches for existing row handlers.  Maybe we should provide
adapter
> classes like AWT?
>
> <shudder>Did I just suggest using AWT as a model?</shudder>
>
> Jeff Butler
>
>
>
> On Jan 30, 2008 1:17 PM, Clinton Begin <clinton.begin@gmail.com> =
wrote:
>
> >
> > Hmmm... would it be horrible if the return value of handleRow() was =
a
> > boolean for "continue"?
> >
> > // don't mind the verbosity or any misplaced
> > // capital letters...thank you outlook
> > public boolean handleRow (Object valueObject) {
> >  boolean continue =3D true;
> >  if (someCondition) {
> >    continue =3D false;
> >  }
> >  return continue;
> > }
> >
> > I hate to suggest making use of the return value, because there is =
only
> > one...but it isn't used right now.  Is this the best use of the =
return
> > value? The alternative is to use a second parameter for controls...
> >
> > public void handleRow (ResultSetControl control, Object valueObject) =
{
> >  if (someCondition) {
> >    control.setContinue(false);
> >  }
> > }
> >
> > Sorry if this has already been discussed, it's more of a dev@ issue, =
but
> > since we're talking about it here...
> >
> > Thoughts?
> >
> > Clinton
> >
> >
> >
> >
>


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