sqlpp11/tests/postgresql/usage/Date.cpp

/**
 * Copyright © 2017 Volker Aßmann
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 *   Redistributions of source code must retain the above copyright notice, this
 *   list of conditions and the following disclaimer.
 *
 *   Redistributions in binary form must reproduce the above copyright notice,
 *   this list of conditions and the following disclaimer in the documentation
 *   and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#include <iostream>

#include <sqlpp11/core/query/query/custom_query.h>
#include <sqlpp11/postgresql/postgresql.h>
#include <sqlpp11/sqlpp11.h>

#include "Tables.h"
#include "make_test_connection.h"

namespace
{
  const auto now = ::sqlpp::chrono::floor<::std::chrono::microseconds>(std::chrono::system_clock::now());
  const auto today = ::sqlpp::chrono::floor<::sqlpp::chrono::days>(now);
  const auto yesterday = today - ::sqlpp::chrono::days{1};

  template <typename L, typename R>
  void require_equal(int line, const L& l, const R& r)
  {
    if (l != r)
    {
      std::cerr << line << ": ";
      to_sql_string(::sqlpp::wrap_operand_t<L>{l}, std::cerr);
      std::cerr << " != ";
      to_sql_string(::sqlpp::wrap_operand_t<R>{r}, std::cerr);
      throw std::runtime_error("Unexpected result");
    }
  }

  template <class Db>
  void prepare_table(Db&& db, bool with_tz)
  {
    db.execute("DROP TABLE IF EXISTS tab_date_time");
    if (with_tz)
    {
      // prepare test with timezone
      db.execute("CREATE TABLE tab_date_time (col_day_point DATE, col_time_point TIMESTAMP WITH TIME ZONE)");
    }
    else
    {
      // prepare  test without timezone
      db.execute("CREATE TABLE tab_date_time (col_day_point DATE, col_time_point TIMESTAMP)");
    }
  }

}  // namespace

int Date(int, char*[])
{

  namespace sql = sqlpp::postgresql;

  sql::connection db = sql::make_test_connection();


  try
  {
    test::createTabDateTime(db);

    const auto tab = test::TabDateTime{};
    db(insert_into(tab).default_values());
    for (const auto& row : db(select(all_of(tab)).from(tab).unconditionally()))
    {
      require_equal(__LINE__, row.dayPointN.has_value(), false);
      require_equal(__LINE__, row.timePointN.has_value(), false);
      require_equal(__LINE__, row.timePointNTz.has_value(), false);
    }

    db(update(tab).set(tab.dayPointN = today, tab.timePointN = now, tab.timePointNTz = now).unconditionally());

    for (const auto& row : db(select(all_of(tab)).from(tab).unconditionally()))
    {
      require_equal(__LINE__, row.dayPointN.value(), today);
      require_equal(__LINE__, row.timePointN.value(), now);
      require_equal(__LINE__, row.timePointNTz.value(), now);
    }

    db(update(tab).set(tab.dayPointN = yesterday, tab.timePointN = today, tab.timePointNTz = today).unconditionally());

    for (const auto& row : db(select(all_of(tab)).from(tab).unconditionally()))
    {
      require_equal(__LINE__, row.dayPointN.value(), yesterday);
      require_equal(__LINE__, row.timePointN.value(), today);
      require_equal(__LINE__, row.timePointNTz.value(), today);
    }

    auto prepared_update =
        db.prepare(update(tab)
                       .set(tab.dayPointN = parameter(tab.dayPointN), tab.timePointN = parameter(tab.timePointN),
                            tab.timePointNTz = parameter(tab.timePointNTz))
                       .unconditionally());
    prepared_update.params.dayPointN = today;
    prepared_update.params.timePointN = now;
    prepared_update.params.timePointNTz = now;
    std::cout << "---- running prepared update ----" << std::endl;
    db(prepared_update);
    std::cout << "---- finished prepared update ----" << std::endl;

    for (const auto& row : db(select(all_of(tab)).from(tab).unconditionally()))
    {
      require_equal(__LINE__, row.dayPointN.value(), today);
      require_equal(__LINE__, row.timePointN.value(), now);
      require_equal(__LINE__, row.timePointNTz.value(), now);
    }
  }
  catch (std::exception& e)
  {
    std::cerr << "Exception: " << e.what() << std::endl;
    return 1;
  }
  catch (...)
  {
    std::cerr << "Unknown exception" << std::endl;
    return 1;
  }
  return 0;
}