Method test

basex-core/src/main/java/org/basex/query/expr/Concat.java:41–51

(final QueryContext qc, final InputInfo ii, final long pos)

  }

  @Override
  public boolean test(final QueryContext qc, final InputInfo ii, final long pos)
      throws QueryException {
    for(final Expr expr : exprs) {
      final Iter iter = expr.atomIter(qc, info);
      for(Item item; (item = qc.next(iter)) != null;) {
        if(item.string(info).length > 0) return true;
      }
    }
    return false;
  }

  @Override
  public Expr optimize(final CompileContext cc) throws QueryException {