Method toUnion

basex-core/src/main/java/org/basex/query/expr/List.java:261–264

If possible, rewrites the list to a union expression. @param cc compilation context @return union or original expression @throws QueryException query exception

(final CompileContext cc)

   * @throws QueryException query exception
   */
  public Expr toUnion(final CompileContext cc) throws QueryException {
    return seqType().type instanceof NodeType ?
      cc.replaceWith(this, new Union(info, exprs)).optimize(cc) : this;
  }

  /**
   * If possible, rewrites the list to a range sequence.