sqlpp11/tests/core/usage/Result.cpp

/*
 * Copyright (c) 2013-2015, Roland Bock
 * 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 "Sample.h"
#include "MockDb.h"
#include <sqlpp11/sqlpp11.h>


#include "../../include/test_helpers.h"

int Result(int, char* [])
{
  MockDb db = {};

  const auto t = test::TabBar{};

  static_assert(sqlpp::can_be_null_t<decltype(t.alpha)>::value, "t.alpha can be null");

  // Using a non-enforcing db
  for (const auto& row : db(select(all_of(t), t.beta.like("")).from(t).unconditionally()))
  {
    static_assert(is_optional<decltype(row.alpha)>::value, "row.alpha can be null");

    for (const auto& sub : db(select(all_of(t)).from(t).where(t.alpha == row.alpha.value())))
    {
      std::cerr << sub.alpha << std::endl;
    }
    db(insert_into(t).set(t.beta = row.beta.value(), t.gamma = false));
  }

  sqlpp::select((t.alpha + 1).as(t.alpha)).flags(sqlpp::all).from(t);
  for (const auto& row : db(select(all_of(t)).from(t).unconditionally()))
  {
    static_assert(is_optional<decltype(row.alpha)>::value, "row.alpha can be null");
  }

  for (const auto& row : db(select(all_of(t)).from(t).unconditionally()))
  {
    static_assert(is_optional<decltype(row.alpha)>::value, "row.alpha can be null");
  }

  sqlpp::select((t.alpha + 1).as(t.alpha)).flags(sqlpp::all).from(t);

  return 0;
}