Re: Problem EOEditingContext
Re: Problem EOEditingContext
- Subject: Re: Problem EOEditingContext
- From: "Cheong Hee (Gmail)" <email@hidden>
- Date: Fri, 13 Jul 2012 18:46:40 +0800
Once upon a time, there is a default constructor class generated in this
way:
public User(EOEditingContext context, EOClassDescription classDesc,
EOGlobalID gid) {
super(context, classDesc, gid);
}
Not sure why it is removed after in wolips. Is this something similar to
your newUser(ec) or User(ec).
----- Original Message -----
From: "Maik Musall" <email@hidden>
To: "WebObjects Development" <email@hidden>
Sent: Friday, July 13, 2012 5:23 PM
Subject: Re: Problem EOEditingContext
Am 13.07.2012 um 01:20 schrieb Ramsey Gurley:
On Jul 12, 2012, at 3:26 PM, Maik Musall wrote:
Am 12.07.2012 um 23:58 schrieb Louis Demers:
User newUser = (User)EOUtilities.createAndInsertInstance(ec,
User.ENTITY_NAME) ;
Much too wordy for my taste, and needs a cast on top of it. Just add a
second constructor in your template which does ec.insertObject(this), so
that you can simply use
User newUser = new User( ec );
Do not delete the parameter-less constructor though, because EOF needs
that internally when restoring objects from db. But refrain from using
that anywhere in your app.
Maik
I know the rule is not followed strictly in WO/Wonder, but as a general
rule in java, do not let 'this' escape the constructor.
http://www.javapractices.com/topic/TopicAction.do?Id=252
Indeed, you're right. Using a factory method is the better way. I just
looked into what insertObject() actually does and it's really more than
you would want to happen inside a constructor, although I never had a
problem with this in years. Still, I'd make a factory method in the
template to be called like
User newUser = User.newInEc( ec );
Side note: javapractices.com is good, but not infallible. For example, it
is badly misguided
about spaces instead of tabs... ;-)
(http://www.javapractices.com/topic/TopicAction.do?Id=244)
Maik
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