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Added error_info

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This commit is contained in:
ruben
2020-01-18 20:05:21 +00:00
parent 034ab38f05
commit a65e86af1d
21 changed files with 469 additions and 203 deletions
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34
examples/query_async.cpp
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@@ -27,11 +27,11 @@ void print_employee(const mysql::row& employee)
<< employee.values()[2] << " dollars yearly\n"; // salary (type double)
}
void die_on_error(const mysql::error_code& err)
void die_on_error(const mysql::error_code& err, const mysql::error_info& info = mysql::error_info())
{
if (err)
{
std::cerr << "Error: " << err << std::endl;
std::cerr << "Error: " << err << ": " << info.message() << std::endl;
exit(1);
}
}
@@ -55,10 +55,10 @@ public:
void connect()
{
connection.next_level().async_connect(ep, [this](const mysql::error_code& err) {
connection.next_level().async_connect(ep, [this](mysql::error_code err) {
die_on_error(err);
connection.async_handshake(conn_params, [this](const mysql::error_code& err) {
die_on_error(err);
connection.async_handshake(conn_params, [this](mysql::error_code err, const mysql::error_info& info) {
die_on_error(err, info);
query_employees();
});
});
@@ -67,11 +67,13 @@ public:
void query_employees()
{
const char* sql = "SELECT first_name, last_name, salary FROM employee WHERE company_id = 'HGS'";
connection.async_query(sql, [this](const mysql::error_code& err, mysql::tcp_resultset&& result) {
die_on_error(err);
connection.async_query(sql, [this](mysql::error_code err, const mysql::error_info& info,
mysql::tcp_resultset&& result
) {
die_on_error(err, info);
resultset = std::move(result);
resultset.async_fetch_all([this](const mysql::error_code& err, const auto& rows) {
die_on_error(err);
resultset.async_fetch_all([this](mysql::error_code err, const mysql::error_info& info, const auto& rows) {
die_on_error(err, info);
for (const auto& employee: rows)
{
print_employee(employee);
@@ -84,8 +86,9 @@ public:
void update_slacker()
{
const char* sql = "UPDATE employee SET salary = 15000 WHERE last_name = 'Slacker'";
connection.async_query(sql, [this](const mysql::error_code& err, [[maybe_unused]] mysql::tcp_resultset&& result) {
die_on_error(err);
connection.async_query(sql, [this](mysql::error_code err, const mysql::error_info& info,
[[maybe_unused]] mysql::tcp_resultset&& result) {
die_on_error(err, info);
assert(result.fields().size() == 0);
query_intern();
});
@@ -94,11 +97,12 @@ public:
void query_intern()
{
const char* sql = "SELECT salary FROM employee WHERE last_name = 'Slacker'";
connection.async_query(sql, [this](const mysql::error_code& err, mysql::tcp_resultset&& result) {
die_on_error(err);
connection.async_query(sql, [this](const mysql::error_code& err, mysql::error_info info,
mysql::tcp_resultset&& result) {
die_on_error(err, info);
resultset = std::move(result);
resultset.async_fetch_all([](const mysql::error_code& err, const auto& rows) {
die_on_error(err);
resultset.async_fetch_all([](const mysql::error_code& err, mysql::error_info info, const auto& rows) {
die_on_error(err, info);
assert(rows.size() == 1);
[[maybe_unused]] auto salary = std::get<double>(rows[0].values()[0]);
assert(salary == 15000);