Agreed - that looks like the optimal solution.
-Yonik
http://www.lucidimagination.com
On Thu, Jul 16, 2009 at 11:40 AM, Uwe Schindler<u...@thetaphi.de> wrote:
> OK, that makes sense: So the example of Yonik should be interpreted like
> this (I think this is the optimal solution as it does not use an additional
> if-clause to check if the iteration has already started):
>
>
>
> class SliceDocIdSetIterator extends DocIdSetIterator {
>
> private int doc=-1,act,last;
>
>
>
> public SliceDocIdSetIterator(int first, int last) {
>
> this.act=first-1; this.last=last;
>
> }
>
>
>
> public int docID() {
>
> return doc;
>
> }
>
>
>
> public int nextDoc() throws IOException {
>
> if (++act>last) act=NO_MORE_DOCS;
>
> return doc = act;
>
> }
>
>
>
> public int advance(int target) throws IOException {
>
> act=target;
>
> if (act>last) act=NO_MORE_DOCS;
>
> return doc = act;
>
> }
>
> }
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