Method iter

basex-core/src/main/java/org/basex/query/func/db/DbNodeId.java:24–50

(final QueryContext qc)

 */
public class DbNodeId extends StandardFunc {
  @Override
  public final Iter iter(final QueryContext qc) throws QueryException {
    final Iter nodes = arg(0).unwrappedIter(qc);
    final long size = nodes.size();

    return new Iter() {
      @Override
      public Itr next() throws QueryException {
        final Item item = qc.next(nodes);
        return item != null ? Itr.get(id(item)) : null;
      }
      @Override
      public Itr get(final long i) throws QueryException {
        return Itr.get(id(nodes.get(i)));
      }
      @Override
      public long size() throws QueryException {
        return size;
      }
      @Override
      public Value value(final QueryContext q, final Expr expr) throws QueryException {
        final IntList ids = new IntList(size);
        addIds(nodes.value(qc, expr), ids);
        return IntSeq.get(ids.finish());
      }
    };
  }

  /**
   * Returns a node ID.