Hi,
Now I am curious about hashCode() implementations like the wizard generated:
> > public int hashCode()
> > {
> > try
> > {
> > long crcKey = -1;
> > java.io.ByteArrayOutputStream bos = new
> > java.io.ByteArrayOutputStream();
> > java.io.ObjectOutputStream oos = new
> > java.io.ObjectOutputStream(bos);
> > oos.writeObject(this);
> > oos.flush();
> > java.util.zip.Adler32 adl32 = new java.util.zip.Adler32();
> > adl32.update(bos.toByteArray());
> > crcKey = adl32.getValue();
> > return (int)(crcKey ^ (crcKey >> 32));
> > } catch (java.io.IOException ioEx)
> > {
> > return -1;
> > }
Is there something in the spec disallowing private members in composite PKs?
I know spec [10.8.2 & 14.1.9.2] for CMP PKs says "All fields in the primary
key class must be declared as public." but I've always interpreted that as
meaning "all fields associated with cmp-fields....". Am I wrong?
So wouldn't the following (equally generic) code be better?
=====
private int hc = -1;
public int hashCode() {
if (hc == -1) {
// calculate hash code value here
hc = .....
}
return hc;
}
=====
Regrds,
Peter
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