On Mar 19, 2008, at 8:21 AM, David Avendasora wrote:
Hi all,
I've run into something that _seems_ to work, but just seems "wrong"
and I don't see how to do it "right".
I have the following inheritance structure in my model:
LotCode (NOT abstract)
ManufacturedBatch extends LotCode.
When I call awakeFromInsertion on the superclass I do it as follows :
public void awakeFromInsertion(EOEditingContext ec) {
super.awakeFromInsertion(ec);
if (lotCodeType() == null) {
setLotCodeType(1);
}
}
But when I call awakeFromInsertion on the subclass I have to do this:
public void awakeFromInsertion(EOEditingContext ec) {
super.awakeFromInsertion(ec);
if (lotCodeType() == null || lotCodeType.equals(1)) {
setLotCodeType(1);
}
}
Whoops. Obviously that should be setLotCodeType(2);
I know that you should _never_ change the class of an EO after
creating it, but that's exactly what I'm doing here. When
awakeFromInsertion is called on the subclass, the first thing it
does is call super.awakeFromInsertion, which sets the class to
LotCode, but then I change it to a ManufacturedBatch immediately
after.
If I don't do this, a call of ManufacturedBatch newManufacturedBatch
= new ManufacturedBatch() returns a LotCode instead.
So, is this an exception to the rule "never change an EO's class" or
is it because I'm doing it in the awakeFromInsertion process that it
is okay?
Or is it wrong to do this and I just haven't been bitten by it yet?
Dave
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