Table.cpp

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/*
 * Copyright (C) 2012-2021 Euclid Science Ground Segment
 *
 * This library is free software; you can redistribute it and/or modify it under
 * the terms of the GNU Lesser General Public License as published by the Free
 * Software Foundation; either version 3.0 of the License, or (at your option)
 * any later version.
 *
 * This library is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
 * details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this library; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */
 
#include "Table/Table.h"
#include "ElementsKernel/Exception.h"
 
namespace Euclid {
namespace Table {
 
Table::Table(std::vector<Row> row_list) : m_row_list{std::move(row_list)}, m_column_info{} {
  // Check we have some rows
  if (m_row_list.empty()) {
    throw Elements::Exception() << "Construction of empty tables is not allowed";
  }
  // We cannot initialize the m_column_info before this point because we must
  // be sure the row list is not empty
  m_column_info = m_row_list[0].getColumnInfo();
  // Check that all the rows have the same column info
  for (auto row : m_row_list) {
    if (*row.getColumnInfo() != *m_column_info) {
      throw Elements::Exception() << "Construction of table from rows with different "
                                  << "columns is not allowed";
    }
  }
}
 
Table::Table(std::shared_ptr<ColumnInfo> column_info) : m_column_info(std::move(column_info)) {}
 
std::shared_ptr<ColumnInfo> Table::getColumnInfo() const {
  return m_column_info;
}
 
std::size_t Table::size() const {
  return m_row_list.size();
}
 
const Row& Table::operator[](std::size_t index) const {
  if (index >= m_row_list.size()) {
    throw Elements::Exception("Index out of bounds");
  }
  return m_row_list[index];
}
 
Table::const_iterator Table::begin() const {
  return m_row_list.cbegin();
}
 
Table::const_iterator Table::end() const {
  return m_row_list.cend();
}
 
}  // namespace Table
}  // end of namespace Euclid