mirror of
https://github.com/rbock/sqlpp11.git
synced 2024-11-16 04:47:18 +08:00
215 lines
8.2 KiB
C++
215 lines
8.2 KiB
C++
/*
|
|
* Copyright (c) 2013 - 2016, 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 "TabSample.h"
|
|
#include <sqlpp11/mysql/mysql.h>
|
|
#include <sqlpp11/sqlpp11.h>
|
|
|
|
#include <cassert>
|
|
#include <iostream>
|
|
#include <vector>
|
|
|
|
SQLPP_ALIAS_PROVIDER(left)
|
|
SQLPP_ALIAS_PROVIDER(right)
|
|
|
|
namespace mysql = sqlpp::mysql;
|
|
int Sample(int, char*[])
|
|
{
|
|
sqlpp::mysql::global_library_init();
|
|
|
|
auto config = std::make_shared<mysql::connection_config>();
|
|
config->user = "root";
|
|
config->database = "sqlpp_mysql";
|
|
config->debug = true;
|
|
config->connect_timeout_seconds = 5;
|
|
try
|
|
{
|
|
mysql::connection db(config);
|
|
}
|
|
catch (const sqlpp::exception& e)
|
|
{
|
|
std::cerr << "For testing, you'll need to create a database sqlpp_mysql for user root (no password)" << std::endl;
|
|
std::cerr << e.what() << std::endl;
|
|
return 1;
|
|
}
|
|
try
|
|
{
|
|
mysql::connection db(config);
|
|
db.execute(R"(DROP TABLE IF EXISTS tab_sample)");
|
|
db.execute(R"(CREATE TABLE tab_sample (
|
|
alpha bigint(20) AUTO_INCREMENT,
|
|
beta varchar(255) DEFAULT NULL,
|
|
gamma bool DEFAULT NULL,
|
|
PRIMARY KEY (alpha)
|
|
))");
|
|
db.execute(R"(DROP TABLE IF EXISTS tab_foo)");
|
|
db.execute(R"(CREATE TABLE tab_foo (
|
|
omega bigint(20) DEFAULT NULL
|
|
))");
|
|
|
|
assert(not db(select(sqlpp::value(false).as(sqlpp::alias::a))).front().a);
|
|
|
|
const auto tab = TabSample{};
|
|
// clear the table
|
|
db(remove_from(tab).unconditionally());
|
|
|
|
// Several ways of ensuring that tab is empty
|
|
assert(not db(select(exists(select(tab.alpha).from(tab).unconditionally())))
|
|
.front()
|
|
.exists); // this is probably the fastest
|
|
assert(not db(select(count(tab.alpha)).from(tab).unconditionally()).front().count);
|
|
assert(db(select(tab.alpha).from(tab).unconditionally()).empty());
|
|
|
|
// explicit all_of(tab)
|
|
std::cerr << __FILE__ << ": " << __LINE__ << std::endl;
|
|
select(all_of(tab)).from(tab);
|
|
std::cerr << __FILE__ << ": " << __LINE__ << std::endl;
|
|
db(select(all_of(tab)).from(tab).unconditionally());
|
|
std::cerr << __FILE__ << ": " << __LINE__ << std::endl;
|
|
for (const auto& row : db(select(all_of(tab)).from(tab).unconditionally()))
|
|
{
|
|
std::cerr << __FILE__ << ": " << __LINE__ << std::endl;
|
|
std::cerr << "row.alpha: " << row.alpha << ", row.beta: " << row.beta << ", row.gamma: " << row.gamma
|
|
<< std::endl;
|
|
};
|
|
// insert
|
|
db(insert_into(tab).default_values());
|
|
const auto x = select(all_of(tab)).from(tab).unconditionally();
|
|
const auto y = db.prepare(x);
|
|
for (const auto& row : db(db.prepare(select(all_of(tab)).from(tab).unconditionally())))
|
|
{
|
|
std::cerr << "alpha: " << row.alpha.is_null() << std::endl;
|
|
std::cerr << "beta: " << row.beta.is_null() << std::endl;
|
|
std::cerr << "gamma: " << row.gamma.is_null() << std::endl;
|
|
}
|
|
db(insert_into(tab).set(tab.beta = "kaesekuchen", tab.gamma = true));
|
|
db(insert_into(tab).default_values());
|
|
db(insert_into(tab).set(tab.beta = "", tab.gamma = true));
|
|
|
|
// update
|
|
db(update(tab).set(tab.gamma = false).where(tab.alpha.in(sqlpp::value_list(std::vector<int>{1, 2, 3, 4}))));
|
|
db(update(tab).set(tab.gamma = true).where(tab.alpha.in(1)));
|
|
|
|
// dynamic insert
|
|
auto dynin = dynamic_insert_into(db, tab).dynamic_set(tab.gamma = true);
|
|
dynin.insert_list.add(tab.beta = "cheesecake");
|
|
db(dynin);
|
|
|
|
// remove
|
|
db(remove_from(tab).where(tab.alpha == tab.alpha + 3));
|
|
|
|
std::cerr << "+++++++++++++++++++++++++++" << std::endl;
|
|
for (const auto& row : db(select(all_of(tab)).from(tab).unconditionally()))
|
|
{
|
|
std::cerr << __LINE__ << " row.beta: " << row.beta << std::endl;
|
|
}
|
|
std::cerr << "+++++++++++++++++++++++++++" << std::endl;
|
|
decltype(db(select(all_of(tab)).from(tab).unconditionally())) result;
|
|
result = db(select(all_of(tab)).from(tab).unconditionally());
|
|
std::cerr << "Accessing a field directly from the result (using the current row): " << result.begin()->alpha
|
|
<< std::endl;
|
|
std::cerr << "Can do that again, no problem: " << result.begin()->alpha << std::endl;
|
|
|
|
auto tx = start_transaction(db);
|
|
if (const auto& row =
|
|
*db(select(all_of(tab), select(max(tab.alpha)).from(tab)).from(tab).unconditionally()).begin())
|
|
{
|
|
int a = row.alpha;
|
|
int m = row.max;
|
|
std::cerr << __LINE__ << " row.alpha: " << a << ", row.max: " << m << std::endl;
|
|
}
|
|
tx.commit();
|
|
|
|
TabFoo foo;
|
|
for (const auto& row : db(select(tab.alpha).from(tab.join(foo).on(tab.alpha == foo.omega)).unconditionally()))
|
|
{
|
|
std::cerr << row.alpha << std::endl;
|
|
}
|
|
|
|
for (const auto& row :
|
|
db(select(tab.alpha).from(tab.left_outer_join(foo).on(tab.alpha == foo.omega)).unconditionally()))
|
|
{
|
|
std::cerr << row.alpha << std::endl;
|
|
}
|
|
|
|
auto ps = db.prepare(select(all_of(tab))
|
|
.from(tab)
|
|
.where(tab.alpha != parameter(tab.alpha) and tab.beta != parameter(tab.beta) and
|
|
tab.gamma != parameter(tab.gamma)));
|
|
ps.params.alpha = 7;
|
|
ps.params.beta = "wurzelbrunft";
|
|
ps.params.gamma = true;
|
|
for (const auto& row : db(ps))
|
|
{
|
|
std::cerr << "bound result: alpha: " << row.alpha << std::endl;
|
|
std::cerr << "bound result: beta: " << row.beta << std::endl;
|
|
std::cerr << "bound result: gamma: " << row.gamma << std::endl;
|
|
}
|
|
|
|
std::cerr << "--------" << std::endl;
|
|
ps.params.gamma = "false";
|
|
for (const auto& row : db(ps))
|
|
{
|
|
std::cerr << "bound result: alpha: " << row.alpha << std::endl;
|
|
std::cerr << "bound result: beta: " << row.beta << std::endl;
|
|
std::cerr << "bound result: gamma: " << row.gamma << std::endl;
|
|
}
|
|
|
|
std::cerr << "--------" << std::endl;
|
|
ps.params.beta = "kaesekuchen";
|
|
for (const auto& row : db(ps))
|
|
{
|
|
std::cerr << "bound result: alpha: " << row.alpha << std::endl;
|
|
std::cerr << "bound result: beta: " << row.beta << std::endl;
|
|
std::cerr << "bound result: gamma: " << row.gamma << std::endl;
|
|
}
|
|
|
|
auto pi = db.prepare(insert_into(tab).set(tab.beta = parameter(tab.beta), tab.gamma = true));
|
|
pi.params.beta = "prepared cake";
|
|
std::cerr << "Inserted: " << db(pi) << std::endl;
|
|
|
|
auto pu = db.prepare(update(tab).set(tab.gamma = parameter(tab.gamma)).where(tab.beta == "prepared cake"));
|
|
pu.params.gamma = false;
|
|
std::cerr << "Updated: " << db(pu) << std::endl;
|
|
|
|
auto pr = db.prepare(remove_from(tab).where(tab.beta != parameter(tab.beta)));
|
|
pr.params.beta = "prepared cake";
|
|
std::cerr << "Deleted lines: " << db(pr) << std::endl;
|
|
|
|
for (const auto& row : db(select(case_when(tab.gamma).then(tab.alpha).else_(foo.omega).as(tab.alpha))
|
|
.from(tab.cross_join(foo))
|
|
.unconditionally()))
|
|
{
|
|
std::cerr << row.alpha << std::endl;
|
|
}
|
|
}
|
|
catch (const std::exception& e)
|
|
{
|
|
std::cerr << "Exception: " << e.what() << std::endl;
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|