mysql_statement.cpp
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/*
Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
The MySQL Connector/C++ is licensed under the terms of the GPLv2
<http://www.gnu.org/licenses/old-licenses/gpl-2.0.html>, like most
MySQL Connectors. There are special exceptions to the terms and
conditions of the GPLv2 as it is applied to this software, see the
FLOSS License Exception
<http://www.mysql.com/about/legal/licensing/foss-exception.html>.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published
by the Free Software Foundation; version 2 of the License.
This program is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <memory>
#include <algorithm>
/*
* mysql_util.h includes private_iface, ie libmysql headers. and they must go
* prior to any header including config.h to avoid annoying redefenition warnings
*/
#include "mysql_util.h"
#include <cppconn/exception.h>
#include <cppconn/resultset.h>
#include <cppconn/warning.h>
#include "mysql_connection.h"
#include "mysql_statement.h"
#include "mysql_resultset.h"
#include "mysql_warning.h"
#include "nativeapi/native_connection_wrapper.h"
#include "nativeapi/native_resultset_wrapper.h"
#include "mysql_debug.h"
namespace sql
{
namespace mysql
{
/* {{{ MySQL_Statement::MySQL_Statement() -I- */
MySQL_Statement::MySQL_Statement(MySQL_Connection* conn, boost::shared_ptr< NativeAPI::NativeConnectionWrapper > & _proxy,
sql::ResultSet::enum_type rset_type, boost::shared_ptr< MySQL_DebugLogger > & l)
: warnings(NULL), connection(conn), proxy(_proxy), isClosed(false), warningsHasBeenLoaded(true),
last_update_count(UL64(~0)), logger(l), resultset_type(rset_type)
{
CPP_ENTER("MySQL_Statement::MySQL_Statement");
CPP_INFO_FMT("this=%p", this);
}
/* }}} */
/* {{{ MySQL_Statement::~MySQL_Statement() -I- */
MySQL_Statement::~MySQL_Statement()
{
CPP_ENTER("MySQL_Statement::~MySQL_Statement");
CPP_INFO_FMT("this=%p", this);
warnings.reset();
}
/* }}} */
/* {{{ MySQL_Statement::do_query() -I- */
void
MySQL_Statement::do_query(const char* q, size_t length)
{
CPP_ENTER("MySQL_Statement::do_query");
CPP_INFO_FMT("this=%p", this);
checkClosed();
if (proxy->query(::sql::SQLString(q, length)) && proxy->errNo()) {
CPP_ERR_FMT("Error during proxy->query : %d:(%s) %s", proxy->errNo(), proxy->sqlstate().c_str(), proxy->error().c_str());
sql::mysql::util::throwSQLException(*proxy.get());
}
warningsHasBeenLoaded = false;
}
/* }}} */
/* {{{ MySQL_Statement::get_resultset() -I- */
boost::shared_ptr< NativeAPI::NativeResultsetWrapper >
MySQL_Statement::get_resultset()
{
CPP_ENTER("MySQL_Statement::get_resultset");
CPP_INFO_FMT("this=%p", this);
checkClosed();
NativeAPI::NativeResultsetWrapper* result;
//TODO: again - probably no need to catch-n-throw here. O maybe no need to throw further
try {
result = (resultset_type == sql::ResultSet::TYPE_FORWARD_ONLY) ? proxy->use_result() : proxy->store_result();
if (!result) {
sql::mysql::util::throwSQLException(*proxy.get());
}
}
catch (::sql::SQLException& e) {
CPP_ERR_FMT("Error during %s_result : %d:(%s) %s", resultset_type == sql::ResultSet::TYPE_FORWARD_ONLY ? "use" : "store",
proxy->errNo(), proxy->sqlstate().c_str(), proxy->error().c_str());
throw e;
}
return boost::shared_ptr< NativeAPI::NativeResultsetWrapper >(result);
}
/* }}} */
/* {{{ MySQL_Statement::cancel() -U- */
void
MySQL_Statement::cancel()
{
CPP_ENTER("MySQL_Statement::cancel");
CPP_INFO_FMT("this=%p", this);
checkClosed();
throw sql::MethodNotImplementedException("MySQL_Statement::cancel");
}
/* }}} */
/* {{{ MySQL_Statement::execute() -I- */
bool
MySQL_Statement::execute(const sql::SQLString& sql)
{
CPP_ENTER("MySQL_Statement::execute");
CPP_INFO_FMT("this=%p", this);
CPP_INFO_FMT("query=%s", sql.c_str());
checkClosed();
do_query(sql.c_str(), static_cast<int>(sql.length()));
bool ret = proxy->field_count() > 0;
last_update_count = ret ? UL64(~0) : proxy->affected_rows();
return ret;
}
/* }}} */
/* {{{ MySQL_Statement::executeQuery() -I- */
sql::ResultSet*
MySQL_Statement::executeQuery(const sql::SQLString& sql)
{
CPP_ENTER("MySQL_Statement::executeQuery");
CPP_INFO_FMT("this=%p", this);
CPP_INFO_FMT("query=%s", sql.c_str());
checkClosed();
last_update_count = UL64(~0);
do_query(sql.c_str(), static_cast<int>(sql.length()));
sql::ResultSet* tmp =
new MySQL_ResultSet(
get_resultset(),
resultset_type == sql::ResultSet::TYPE_FORWARD_ONLY ? resultset_type : sql::ResultSet::TYPE_SCROLL_INSENSITIVE,
this,
logger
);
CPP_INFO_FMT("rset=%p", tmp);
return tmp;
}
/* }}} */
/* {{{ MySQL_Statement::executeUpdate() -I- */
int
MySQL_Statement::executeUpdate(const sql::SQLString& sql)
{
CPP_ENTER("MySQL_Statement::executeUpdate");
CPP_INFO_FMT("this=%p", this);
CPP_INFO_FMT("query=%s", sql.c_str());
checkClosed();
do_query(sql.c_str(), static_cast<int>(sql.length()));
if (proxy->field_count()) {
throw sql::InvalidArgumentException("Statement returning result set");
}
return static_cast<int>(last_update_count = proxy->affected_rows());
}
/* }}} */
/* {{{ MySQL_Statement::getConnection() -I- */
sql::Connection*
MySQL_Statement::getConnection()
{
CPP_ENTER("MySQL_Statement::getConnection");
CPP_INFO_FMT("this=%p", this);
checkClosed();
return connection;
}
/* }}} */
/* {{{ MySQL_Statement::getFetchSize() -U- */
size_t
MySQL_Statement::getFetchSize()
{
CPP_ENTER("MySQL_Statement::getFetchSize");
CPP_INFO_FMT("this=%p", this);
checkClosed();
throw sql::MethodNotImplementedException("MySQL_Statement::getFetchSize");
return 0;
}
/* }}} */
/* {{{ MySQL_Statement::getResultSet() -I- */
sql::ResultSet*
MySQL_Statement::getResultSet()
{
CPP_ENTER("MySQL_Statement::getResultSet");
CPP_INFO_FMT("this=%p", this);
checkClosed();
last_update_count = UL64(~0);
boost::shared_ptr< NativeAPI::NativeResultsetWrapper > result;
sql::ResultSet::enum_type tmp_type;
try {
NativeAPI::NativeResultsetWrapper* tmp_ptr;
switch (resultset_type) {
case sql::ResultSet::TYPE_FORWARD_ONLY:
if (!(tmp_ptr = proxy->use_result())) {
sql::mysql::util::throwSQLException(*proxy.get());
}
result.reset(tmp_ptr);
tmp_type = sql::ResultSet::TYPE_FORWARD_ONLY;
break;
default:
if (!(tmp_ptr = proxy->store_result())) {
sql::mysql::util::throwSQLException(*proxy.get());
}
result.reset(tmp_ptr);
tmp_type = sql::ResultSet::TYPE_SCROLL_INSENSITIVE;
}
}
catch (::sql::SQLException& e) {
if (proxy->errNo() != 0) {
CPP_ERR_FMT("Error during %s_result : %d:(%s) %s", resultset_type == sql::ResultSet::TYPE_FORWARD_ONLY ? "use" : "store",
proxy->errNo(), proxy->sqlstate().c_str(), proxy->error().c_str());
throw e;
}
else {
return NULL;
}
}
if (!result) {
/* if there was an update then this method should return NULL and not throw */
return NULL;
}
sql::ResultSet* ret = new MySQL_ResultSet(result, tmp_type, this, logger);
CPP_INFO_FMT("res=%p", ret);
return ret;
}
/* }}} */
/* {{{ MySQL_Statement::setFetchSize() -U- */
void
MySQL_Statement::setFetchSize(size_t /* fetch */)
{
CPP_ENTER("MySQL_Statement::setFetchSize");
CPP_INFO_FMT("this=%p", this);
checkClosed();
throw sql::MethodNotImplementedException("MySQL_Statement::setFetchSize");
}
/* }}} */
/* {{{ MySQL_Statement::setQueryTimeout() -U- */
void
MySQL_Statement::setQueryTimeout(unsigned int)
{
CPP_ENTER("MySQL_Statement::setQueryTimeout");
CPP_INFO_FMT("this=%p", this);
checkClosed();
throw sql::MethodNotImplementedException("MySQL_Statement::setQueryTimeout");
}
/* }}} */
/* {{{ MySQL_Statement::clearWarnings() -I- */
void
MySQL_Statement::clearWarnings()
{
CPP_ENTER("MySQL_Statement::clearWarnings");
CPP_INFO_FMT("this=%p", this);
checkClosed();
warnings.reset();
}
/* }}} */
/* {{{ MySQL_Statement::close() -i- */
void
MySQL_Statement::close()
{
CPP_ENTER("MySQL_Statement::close");
CPP_INFO_FMT("this=%p", this);
checkClosed();
clearWarnings();
isClosed = true;
}
/* }}} */
/* {{{ MySQL_Statement::getMaxFieldSize() -U- */
unsigned int
MySQL_Statement::getMaxFieldSize()
{
CPP_ENTER("MySQL_Statement::getMaxFieldSize");
CPP_INFO_FMT("this=%p", this);
checkClosed();
throw sql::MethodNotImplementedException("MySQL_Statement::getMaxFieldSize");
return 0;
}
/* }}} */
/* {{{ MySQL_Statement::getMaxRows() -U- */
uint64_t
MySQL_Statement::getMaxRows()
{
CPP_ENTER("MySQL_Statement::getMaxRows");
CPP_INFO_FMT("this=%p", this);
checkClosed();
throw sql::MethodNotImplementedException("MySQL_Statement::getMaxRows");
return 0;
}
/* }}} */
/* {{{ MySQL_Statement::getMoreResults() -I- */
bool
MySQL_Statement::getMoreResults()
{
CPP_ENTER("MySQL_Statement::getMaxRows");
CPP_INFO_FMT("this=%p", this);
checkClosed();
last_update_count = UL64(~0);
if (proxy->more_results()) {
int next_result = proxy->next_result();
if (next_result > 0) {
CPP_ERR_FMT("Error during getMoreResults : %d:(%s) %s", proxy->errNo(), proxy->sqlstate().c_str(), proxy->error().c_str());
sql::mysql::util::throwSQLException(*proxy.get());
}
else if (next_result == 0) {
return proxy->field_count() != 0;
}
else if (next_result == -1) {
throw sql::SQLException("Impossible! more_results() said true, next_result says no more results");
}
}
return false;
}
/* }}} */
/* {{{ MySQL_Statement::getQueryTimeout() -U- */
unsigned int
MySQL_Statement::getQueryTimeout()
{
checkClosed();
throw sql::MethodNotImplementedException("MySQL_Statement::getQueryTimeout");
return 0; // fool compilers
}
/* }}} */
/* {{{ MySQL_Statement::getResultSetType() -I- */
sql::ResultSet::enum_type
MySQL_Statement::getResultSetType()
{
CPP_ENTER("MySQL_Statement::getResultSetType");
checkClosed();
return resultset_type;
}
/* }}} */
/* {{{ MySQL_Statement::getUpdateCount() -I- */
uint64_t
MySQL_Statement::getUpdateCount()
{
CPP_ENTER("MySQL_Statement::getUpdateCount");
checkClosed();
if (last_update_count == UL64(~0)) {
return UL64(~0);
}
uint64_t ret = last_update_count;
last_update_count = UL64(~0); /* the value will be returned once per result set */
return ret;
}
/* }}} */
/* {{{ MySQL_Statement::getWarnings() -I- */
const SQLWarning*
MySQL_Statement::getWarnings()
{
CPP_ENTER("MySQL_Statement::getWarnings");
CPP_INFO_FMT("this=%p", this);
checkClosed();
if (!warningsHasBeenLoaded) {
warnings.reset(loadMysqlWarnings(connection));
warningsHasBeenLoaded = true;
}
return warnings.get();
}
/* }}} */
/* {{{ MySQL_Statement::setCursorName() -U- */
void
MySQL_Statement::setCursorName(const sql::SQLString&)
{
checkClosed();
throw sql::MethodNotImplementedException("MySQL_Statement::setCursorName");
}
/* }}} */
/* {{{ MySQL_Statement::setEscapeProcessing() -U- */
void
MySQL_Statement::setEscapeProcessing(bool)
{
checkClosed();
throw sql::MethodNotImplementedException("MySQL_Statement::setEscapeProcessing");
}
/* }}} */
/* {{{ MySQL_Statement::setMaxFieldSize() -U- */
void
MySQL_Statement::setMaxFieldSize(unsigned int)
{
checkClosed();
throw sql::MethodNotImplementedException("MySQL_Statement::setMaxFieldSize");
}
/* }}} */
/* {{{ MySQL_Statement::setMaxRows() -U- */
void
MySQL_Statement::setMaxRows(unsigned int)
{
checkClosed();
throw sql::MethodNotImplementedException("MySQL_Statement::setMaxRows");
}
/* }}} */
/* {{{ MySQL_Statement::setResultSetType() -I- */
sql::Statement*
MySQL_Statement::setResultSetType(sql::ResultSet::enum_type type)
{
checkClosed();
resultset_type = type;
return this;
}
/* }}} */
/* {{{ MySQL_Statement::checkClosed() -I- */
void
MySQL_Statement::checkClosed()
{
CPP_ENTER("MySQL_Statement::checkClosed");
if (isClosed) {
CPP_ERR("Statement has been closed");
throw sql::InvalidInstanceException("Statement has been closed");
}
}
/* }}} */
} /* namespace mysql */
} /* namespace sql */
/*
* Local variables:
* tab-width: 4
* c-basic-offset: 4
* End:
* vim600: noet sw=4 ts=4 fdm=marker
* vim<600: noet sw=4 ts=4
*/