Method unwrappedIter

basex-core/src/main/java/org/basex/query/expr/Expr.java:138–163

Evaluates the expression and returns an iterator on the resulting, unwrapped items. @param qc query context @return iterator @throws QueryException query exception

(final QueryContext qc)

   * @throws QueryException query exception
   */
  public Iter unwrappedIter(final QueryContext qc) throws QueryException {
    final Iter iter = iter(qc);
    if(!seqType().mayBeWrapped()) return iter;

    return new Iter() {
      private Iter unwrapped;

      @Override
      public Item next() throws QueryException {
        while(true) {
          if(unwrapped == null) {
            final Item item = iter.next();
            if(item == null) return null;
            if(item instanceof final JNode jnode) {
              unwrapped = jnode.value.unwrappedIter(qc);
            } else {
              return item;
            }
          }
          final Item item = unwrapped.next();
          if(item != null) return item;
          unwrapped = null;
        }
      }
    };
  }

  /**
   * Evaluates the expression and returns the unwrapped items.