mirror of
https://github.com/rbock/sqlpp11.git
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a69230b930
Implemented get/set_default_isolation_level() functions
229 lines
7.1 KiB
C++
229 lines
7.1 KiB
C++
/*
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* Copyright (c) 2013-2016, Roland Bock
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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*
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* * Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
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* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "MockDb.h"
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#include "Sample.h"
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#include "is_regular.h"
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#include <algorithm>
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#include <iostream>
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#include <sqlpp11/alias_provider.h>
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#include <sqlpp11/connection.h>
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#include <sqlpp11/functions.h>
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#include <sqlpp11/select.h>
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#include <sqlpp11/without_table_check.h>
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template <typename Db, typename Column>
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int64_t getColumn(Db&& db, const Column& column)
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{
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auto result = db(select(column.as(sqlpp::alias::a)).from(column.table()).unconditionally());
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if (not result.empty())
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return result.front().a;
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else
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return 0;
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}
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struct to_cerr
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{
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template <typename Field>
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auto operator()(const Field& field) const -> void
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{
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std::cerr << get_sql_name(field) << " = " << field << std::endl;
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}
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};
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template <typename Row>
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void print_row(Row const& row)
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{
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int64_t a = row.alpha;
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const std::string b = row.beta;
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std::cout << a << ", " << b << std::endl;
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}
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int Select(int, char* [])
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{
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MockDb db = {};
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MockDb::_serializer_context_t printer = {};
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const auto f = test::TabFoo{};
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const auto t = test::TabBar{};
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const auto tab_a = f.as(sqlpp::alias::a);
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getColumn(db, t.alpha);
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select(count(t.alpha));
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for (const auto& row : db(select(sqlpp::value(false).as(sqlpp::alias::a))))
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{
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std::cout << row.a << std::endl;
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}
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{
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// using stl algorithms
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auto rows = db(select(all_of(t)).from(t).unconditionally());
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// nicer in C++14
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std::for_each(rows.begin(), rows.end(), &print_row<decltype(*rows.begin())>);
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}
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for (const auto& row : db(select(all_of(t)).from(t).unconditionally()))
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{
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int64_t a = row.alpha;
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const std::string b = row.beta;
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std::cout << a << ", " << b << std::endl;
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}
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for (const auto& row : db(select(all_of(t).as(t)).from(t).unconditionally()))
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{
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int64_t a = row.tabBar.alpha;
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const std::string b = row.tabBar.beta;
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std::cout << a << ", " << b << std::endl;
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}
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for (const auto& row : db(select(all_of(t).as(t), t.gamma).from(t).where(t.alpha > 7)))
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{
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int64_t a = row.tabBar.alpha;
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const std::string b = row.tabBar.beta;
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const bool g = row.gamma;
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std::cout << a << ", " << b << ", " << g << std::endl;
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}
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for (const auto& row : db(select(all_of(t).as(t), t.gamma).from(t).where(t.alpha > 7).for_update()))
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{
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int64_t a = row.tabBar.alpha;
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const std::string b = row.tabBar.beta;
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const bool g = row.gamma;
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std::cout << a << ", " << b << ", " << g << std::endl;
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}
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for (const auto& row :
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db(select(all_of(t), all_of(f)).from(t.join(f).on(t.alpha > f.omega and not t.gamma)).unconditionally()))
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{
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std::cout << row.alpha << std::endl;
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}
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for (const auto& row : db(select(all_of(t), all_of(f))
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.from(t.join(f).on(t.alpha > f.omega).join(tab_a).on(t.alpha == tab_a.omega))
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.unconditionally()))
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{
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std::cout << row.alpha << std::endl;
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}
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for (const auto& row : db(select(count(t.alpha), avg(t.alpha)).from(t).unconditionally()))
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{
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std::cout << row.count << std::endl;
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}
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for (const auto& row : db(select(count(t.alpha), avg(t.alpha)).from(t).where(t.alpha == sqlpp::tvin(0))))
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{
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std::cout << row.count << std::endl;
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}
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auto stat = sqlpp::select()
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.columns(all_of(t))
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.flags(sqlpp::all)
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.from(t)
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.where(t.alpha > 0)
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.group_by(t.alpha)
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.order_by(t.gamma.asc())
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.having(t.gamma)
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.offset(19u)
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.limit(7u);
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printer.reset();
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std::cerr << serialize(stat, printer).str() << std::endl;
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auto s0 = dynamic_select(db)
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.columns(all_of(t))
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.flags(sqlpp::all)
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.from(t)
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.where(t.alpha > 0)
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.group_by(t.alpha)
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.order_by(t.gamma.asc())
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.having(t.gamma)
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.limit(7u)
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.offset(19u);
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printer.reset();
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std::cerr << serialize(s0, printer).str() << std::endl;
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auto s = dynamic_select(db)
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.dynamic_columns(all_of(t))
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.dynamic_flags()
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.dynamic_from(t)
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.dynamic_where()
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.dynamic_group_by(t.alpha)
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.dynamic_order_by()
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.dynamic_having(sum(t.alpha) > 17)
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.dynamic_limit()
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.dynamic_offset();
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s.select_flags.add(sqlpp::distinct);
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s.selected_columns.add(without_table_check(f.omega));
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s.from.add(dynamic_cross_join(f));
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s.where.add(t.alpha > 7);
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s.having.add(t.alpha > 7);
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s.limit.set(3u);
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s.offset.set(3u);
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s.group_by.add(t.beta);
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s.order_by.add(t.beta.asc());
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s.order_by.add(t.delta.order(sqlpp::sort_type::desc));
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for (const auto& row : db(s))
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{
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int64_t a = row.alpha;
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std::cout << a << std::endl;
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}
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printer.reset();
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std::cerr << serialize(s, printer).str() << std::endl;
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select(sqlpp::value(7).as(t.alpha));
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for (const auto& row :
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db(select(sqlpp::case_when(true).then(sqlpp::null).else_(sqlpp::null).as(t.beta)).from(t).unconditionally()))
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{
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std::cerr << row.beta << std::endl;
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}
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for (const auto& row : db(select(all_of(t)).from(t).unconditionally()))
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{
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for_each_field(row, to_cerr{});
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}
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{
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auto transaction = start_transaction(db, sqlpp::isolation_level::read_committed);
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if (db._mock_data._last_isolation_level != sqlpp::isolation_level::read_committed)
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{
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std::cout << "Error: transaction isolation level does not match expected level" << std::endl;
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}
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}
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db.set_default_isolation_level(sqlpp::isolation_level::read_uncommitted);
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{
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auto transaction = start_transaction(db);
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if (db._mock_data._last_isolation_level != sqlpp::isolation_level::read_uncommitted)
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{
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std::cout << "Error: transaction isolation level does not match default level" << std::endl;
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}
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}
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return 0;
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}
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