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#include "odbc-connection.h"
#include "connection.h"
#include "odbc-dsn.h"
#include "odbc-error.h"
#include "odbc-modifycommand.h"
#include "odbc-selectcommand.h"
#include <array>
#include <cstdio>
#include <cstring>
#include <factory.h>
#include <memory>
#include <sqlext.h>
NAMEDFACTORY("odbc", ODBC::Connection, DB::ConnectionFactory)
ODBC::Connection::Connection(const DSN & d) :
env(nullptr), conn(nullptr), thinkDelStyle(DB::BulkDeleteStyle::UsingUsing),
thinkUpdStyle(DB::BulkUpdateStyle::UsingFromSrc)
{
connectPre();
RETCODE dberr = SQLConnect(conn, const_cast<SQLCHAR *>(reinterpret_cast<const SQLCHAR *>(d.dsn.c_str())), SQL_NTS,
const_cast<SQLCHAR *>(reinterpret_cast<const SQLCHAR *>(d.username.c_str())), SQL_NTS,
const_cast<SQLCHAR *>(reinterpret_cast<const SQLCHAR *>(d.password.c_str())), SQL_NTS);
if (!SQL_SUCCEEDED(dberr)) {
throw ConnectionError(dberr, SQL_HANDLE_DBC, conn);
}
connectPost();
}
void
ODBC::Connection::connectPre()
{
SQLRETURN dberr = SQLAllocHandle(SQL_HANDLE_ENV, SQL_NULL_HANDLE, &env);
if (!SQL_SUCCEEDED(dberr)) {
throw ConnectionError(dberr, SQL_HANDLE_ENV, env);
}
dberr = SQLSetEnvAttr(env, SQL_ATTR_ODBC_VERSION, reinterpret_cast<SQLPOINTER *>(SQL_OV_ODBC3), 0);
if (!SQL_SUCCEEDED(dberr)) {
throw ConnectionError(dberr, SQL_HANDLE_ENV, env);
}
dberr = SQLAllocHandle(SQL_HANDLE_DBC, env, &conn);
if (!SQL_SUCCEEDED(dberr)) {
throw ConnectionError(dberr, SQL_HANDLE_ENV, env);
}
dberr = SQLSetConnectAttr(conn, SQL_LOGIN_TIMEOUT, reinterpret_cast<SQLPOINTER *>(5), 0);
if (!SQL_SUCCEEDED(dberr)) {
throw ConnectionError(dberr, SQL_HANDLE_ENV, env);
}
}
void
ODBC::Connection::connectPost()
{
RETCODE dberr = SQLSetConnectOption(conn, SQL_ATTR_AUTOCOMMIT, SQL_AUTOCOMMIT_ON);
if (!SQL_SUCCEEDED(dberr)) {
throw ConnectionError(dberr, SQL_HANDLE_DBC, conn);
}
std::array<SQLCHAR, 1024> info {};
dberr = SQLGetInfo(conn, SQL_DRIVER_NAME, info.data(), info.size(), nullptr);
if (!SQL_SUCCEEDED(dberr)) {
throw ConnectionError(dberr, SQL_HANDLE_DBC, conn);
}
// Apply known DB specific tweaks
// NOLINTNEXTLINE(hicpp-no-array-decay)
if (strcasestr(reinterpret_cast<const char *>(info.data()), "myodbc")) {
thinkDelStyle = DB::BulkDeleteStyle::UsingUsingAlias;
thinkUpdStyle = DB::BulkUpdateStyle::UsingJoin;
}
}
ODBC::Connection::Connection(const std::string & s) :
env(nullptr), conn(nullptr), thinkDelStyle(DB::BulkDeleteStyle::UsingUsing),
thinkUpdStyle(DB::BulkUpdateStyle::UsingFromSrc)
{
connectPre();
RETCODE dberr = SQLDriverConnect(conn, nullptr, const_cast<SQLCHAR *>(reinterpret_cast<const SQLCHAR *>(s.c_str())),
static_cast<SQLSMALLINT>(s.length()), nullptr, 0, nullptr, SQL_DRIVER_NOPROMPT);
if (!SQL_SUCCEEDED(dberr)) {
throw ConnectionError(dberr, SQL_HANDLE_DBC, conn);
}
connectPost();
}
ODBC::Connection::~Connection()
{
if (conn) {
SQLDisconnect(conn);
SQLFreeHandle(SQL_HANDLE_DBC, conn);
}
if (env) {
SQLFreeHandle(SQL_HANDLE_ENV, env);
}
}
void
ODBC::Connection::beginTxInt()
{
SQLRETURN dberr = SQLSetConnectOption(conn, SQL_ATTR_AUTOCOMMIT, SQL_AUTOCOMMIT_OFF);
if (!SQL_SUCCEEDED(dberr)) {
throw Error(dberr, SQL_HANDLE_DBC, conn);
}
}
void
ODBC::Connection::commitTxInt()
{
SQLRETURN dberr = SQLEndTran(SQL_HANDLE_DBC, conn, SQL_COMMIT);
if (!SQL_SUCCEEDED(dberr)) {
throw Error(dberr, SQL_HANDLE_DBC, conn);
}
dberr = SQLSetConnectOption(conn, SQL_ATTR_AUTOCOMMIT, SQL_AUTOCOMMIT_ON);
if (!SQL_SUCCEEDED(dberr)) {
throw Error(dberr, SQL_HANDLE_DBC, conn);
}
}
void
ODBC::Connection::rollbackTxInt()
{
SQLRETURN dberr = SQLEndTran(SQL_HANDLE_DBC, conn, SQL_ROLLBACK);
if (!SQL_SUCCEEDED(dberr)) {
throw Error(dberr, SQL_HANDLE_DBC, conn);
}
dberr = SQLSetConnectOption(conn, SQL_ATTR_AUTOCOMMIT, SQL_AUTOCOMMIT_ON);
if (!SQL_SUCCEEDED(dberr)) {
throw Error(dberr, SQL_HANDLE_DBC, conn);
}
}
DB::BulkDeleteStyle
ODBC::Connection::bulkDeleteStyle() const
{
return thinkDelStyle;
}
DB::BulkUpdateStyle
ODBC::Connection::bulkUpdateStyle() const
{
return thinkUpdStyle;
}
DB::SelectCommandPtr
ODBC::Connection::select(const std::string & sql, const DB::CommandOptionsCPtr &)
{
return std::make_shared<ODBC::SelectCommand>(*this, sql);
}
DB::ModifyCommandPtr
ODBC::Connection::modify(const std::string & sql, const DB::CommandOptionsCPtr &)
{
return std::make_shared<ODBC::ModifyCommand>(*this, sql);
}
std::string
ODBC::Connection::getAttrStr(SQLINTEGER attr) const
{
std::string rtn;
rtn.resize(BUFSIZ);
SQLINTEGER size = 0;
SQLRETURN dberr = SQLGetConnectAttr(
conn, attr, const_cast<SQLCHAR *>(reinterpret_cast<const SQLCHAR *>(rtn.c_str())), BUFSIZ, &size);
if (!SQL_SUCCEEDED(dberr)) {
throw ODBC::Error(dberr, SQL_HANDLE_DBC, conn);
}
rtn.resize(static_cast<std::string::size_type>(size));
return rtn;
}
SQLINTEGER
ODBC::Connection::getAttrInt(SQLINTEGER attr) const
{
SQLINTEGER result;
SQLRETURN dberr = SQLGetConnectAttr(conn, attr, &result, sizeof(result), nullptr);
if (!SQL_SUCCEEDED(dberr)) {
throw ODBC::Error(dberr, SQL_HANDLE_DBC, conn);
}
return result;
}
void
ODBC::Connection::ping() const
{
SQLINTEGER dead = getAttrInt(SQL_ATTR_CONNECTION_DEAD);
if (dead != SQL_CD_FALSE) {
throw ODBC::ConnectionError(0, SQL_HANDLE_DBC, conn);
}
}
ODBC::ConnectionError::ConnectionError(RETCODE err, SQLSMALLINT handletype, SQLHANDLE handle) :
// NOLINTNEXTLINE(bugprone-throw-keyword-missing)
ODBC::Error(err, handletype, handle), DB::ConnectionError()
{
}
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