On 9/10/12 11:47 AM, Sébastien Brisard wrote:
> Hi
> What should I do there?
> I'm trying to work on MATH-854. It turns out that FieldElement<T>.add
> throws a NAE. Should I catch it below, and rethrow it with a more
> detailed message (including the entry index)?
IMO, yes.
I would also check v itself and add to the javadoc contract that IAE
is thrown if v is null. This is not consistently done in [math],
though, and rarely in the linear package, so I am OK just letting
the NPE propagate if v is null. It is a little awkward that v
itself being null leads to NPE, but a component of it null leads to
MIAE.
Phil
>
> Best,
> Sébastien
>
>
> /** {@inheritDoc} */
> public FieldVector<T> add(FieldVector<T> v)
> throws DimensionMismatchException {
> try {
> return add((ArrayFieldVector<T>) v);
> } catch (ClassCastException cce) {
> checkVectorDimensions(v);
> T[] out = buildArray(data.length);
> for (int i = 0; i < data.length; i++) {
> out[i] = data[i].add(v.getEntry(i));
> // SHOULD I CATCH NAE HERE?
> }
> return new ArrayFieldVector<T>(field, out, false);
> }
> }
>
>
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