Method item

basex-core/src/main/java/org/basex/query/up/expr/Delete.java:34–47

(final QueryContext qc, final InputInfo ii)

  }

  @Override
  public Item item(final QueryContext qc, final InputInfo ii) throws QueryException {
    final Iter iter = arg(0).unwrappedIter(qc);
    for(Item item; (item = qc.next(iter)) != null;) {
      if(!(item instanceof final XNode node)) throw UPTRGDELEMPT_X.get(info, item);
      // nodes without parents are ignored
      if(node.parent() == null) continue;
      final Updates updates = qc.updates();
      final DBNode dbnode = updates.determineDataRef(node, qc);
      checkWrite(dbnode, qc);
      updates.add(new DeleteNode(dbnode.pre(), dbnode.data(), info), qc);
    }
    return Empty.VALUE;
  }

  @Override
  public Expr copy(final CompileContext cc, final IntObjectMap<Var> vm) {