Function PrintPath

be/src/util/debug-util.cc:278–324

}

string PrintPath(const TableDescriptor& tbl_desc, const SchemaPath& path) {
  stringstream ss;
  ss << tbl_desc.database() << "." << tbl_desc.name();
  const ColumnType* type = nullptr;
  if (path.size() > 0) {
    ss << "." << tbl_desc.col_descs()[path[0]].name();
    type = &tbl_desc.col_descs()[path[0]].type();
  }
  for (int i = 1; i < path.size(); ++i) {
    ss << ".";
    switch (type->type) {
      case TYPE_ARRAY:
        if (path[i] == 0) {
          ss << "item";
          type = &type->children[0];
        } else {
          DCHECK_EQ(path[i], 1);
          ss << "pos";
          type = nullptr;
        }
        break;
      case TYPE_MAP:
        if (path[i] == 0) {
          ss << "key";
          type = &type->children[0];
        } else if (path[i] == 1) {
          ss << "value";
          type = &type->children[1];
        } else {
          DCHECK_EQ(path[i], 2);
          ss << "pos";
          type = nullptr;
        }
        break;
      case TYPE_STRUCT:
        DCHECK_LT(path[i], type->children.size());
        ss << type->field_names[path[i]];
        type = &type->children[path[i]];
        break;
      default:
        DCHECK_EQ(path.size() - 1, i) << PrintNumericPath(path) << " "
                                      << i <<" " << type->DebugString();
        ss << "(" << type->DebugString() << ")";
    }
  }
  return ss.str();
}

string PrintSubPath(const TableDescriptor& tbl_desc, const SchemaPath& path,
    int end_path_idx) {