void StatementExecutor::bindResult(MYSQL_BIND* result)
{
if (_state < STMT_COMPILED)
throw StatementException("Statement is not compiled yet");
if (mysql_stmt_bind_result(_pHandle, result) != 0)
throw StatementException("mysql_stmt_bind_result error ", _pHandle, _query);
}
bool StatementExecutor::fetchColumn(std::size_t n, MYSQL_BIND *bind)
{
if (_state < STMT_EXECUTED)
throw StatementException("Statement is not executed yet");
int res = mysql_stmt_fetch_column(_pHandle, bind, static_cast<unsigned int>(n), 0);
if ((res != 0) && (res != MYSQL_NO_DATA))
throw StatementException(Poco::format("mysql_stmt_fetch_column(%z) error", n), _pHandle, _query);
return (res == 0);
}
bool StatementExecutor::fetch()
{
if (_state < STMT_EXECUTED)
throw StatementException("Statement is not executed yet");
int res = mysql_stmt_fetch(_pHandle);
// we have specified zero buffers for BLOBs, so DATA_TRUNCATED is normal in this case
if ((res != 0) && (res != MYSQL_NO_DATA) && (res != MYSQL_DATA_TRUNCATED))
throw StatementException("mysql_stmt_fetch error", _pHandle, _query);
return (res == 0) || (res == MYSQL_DATA_TRUNCATED);
}
void StatementExecutor::bindParams(MYSQL_BIND* params, std::size_t count)
{
if (_state < STMT_COMPILED)
throw StatementException("Statement is not compiled yet");
if (count != mysql_stmt_param_count(_pHandle))
throw StatementException("wrong bind parameters count", 0, _query);
if (count == 0) return;
if (mysql_stmt_bind_param(_pHandle, params) != 0)
throw StatementException("mysql_stmt_bind_param() error ", _pHandle, _query);
}
void StatementExecutor::bindResult(MYSQL_BIND* result)
{
if (_state < STMT_COMPILED)
{
throw StatementException("Satement is not compiled yet");
}
int res = mysql_stmt_bind_result(h, result);
if (res != 0)
{
throw StatementException("mysql_stmt_bind_result error ", h, _query);
}
}
void StatementExecutor::execute()
{
if (_state < STMT_COMPILED)
throw StatementException("Statement is not compiled yet");
if (mysql_stmt_execute(_pHandle) != 0)
throw StatementException("mysql_stmt_execute error", _pHandle, _query);
_state = STMT_EXECUTED;
my_ulonglong affectedRows = mysql_affected_rows(_pSessionHandle);
if (affectedRows != ((my_ulonglong) - 1))
_affectedRowCount = static_cast<std::size_t>(affectedRows); //Was really a DELETE, UPDATE or INSERT statement
}
void StatementExecutor::execute()
{
if (_state < STMT_COMPILED)
{
throw StatementException("Satement is not compiled yet");
}
int res = mysql_stmt_execute(h);
if (res != 0)
{
throw StatementException("mysql_stmt_execute error", h, _query);
}
_state = STMT_EXECUTED;
}
unsigned Statement::GetFieldsCount() const
{
unsigned FieldsCount = 0;
if (SQLNumResultCols(StmtHldr->GetHandle(), reinterpret_cast<SQLSMALLINT *>(&FieldsCount)) != SQL_SUCCESS)
StatementException("Error get fields count", seErrorGetFieldsCount);
return FieldsCount;
}
void Statement::ExecuteDirect(const std::string &query)
{
CloseCursor();
if (SQLExecDirect(StmtHldr->GetHandle(), const_cast<SQLCHAR *>(reinterpret_cast<const SQLCHAR *>(query.c_str())), SQL_NTS) != SQL_SUCCESS)
throw StatementException(GetLastDBError(SQL_HANDLE_STMT, StmtHldr->GetHandle()), seErrorExecute);
IsOpen = true;
}
bool StatementExecutor::fetch()
{
if (_state < STMT_EXECUTED)
{
throw StatementException("Satement is not executed yet");
}
int res = mysql_stmt_fetch(h);
if ((res != 0) && (res != MYSQL_NO_DATA))
{
throw StatementException("mysql_stmt_fetch error", h, _query);
}
return (res == 0);
}
void FunctionStatement::checkTree(Type* functionType) {
if (func_->getFunction().get() == nullptr) {
std::string error = "";
if (func_->getNamespace().length() > 0) {
error = std::string("Function ") + func_->getNamespace() + "."
+ func_->getName() + " could not be resolved. "
+ func_->getResolveIssue();
} else {
error = std::string("Function ") + func_->getName()
+ " could not be resolved. " + func_->getResolveIssue();
}
throw StatementException(this,
std::string("Function ") + func_->getNamespace() + "."
+ func_->getName() + " could not be resolved. "
+ func_->getResolveIssue());
}
StatementAssert(this,
func_->getFunction()->getSignature().argumentsEqual(
func_->getTargetArguments()),
"The resolved function has incorrect arguments. This is an internal compiler issue.");
}
void ODBCStatementImpl::clear()
{
SQLRETURN rc = SQLCloseCursor(_stmt);
_stepCalled = false;
_affectedRowCount = 0;
if (Utility::isError(rc))
{
StatementError err(_stmt);
bool ignoreError = false;
const StatementDiagnostics& diagnostics = err.diagnostics();
//ignore "Invalid cursor state" error
//(returned by 3.x drivers when cursor is not opened)
for (int i = 0; i < diagnostics.count(); ++i)
{
if (ignoreError =
(INVALID_CURSOR_STATE == std::string(diagnostics.sqlState(i))))
{
break;
}
}
if (!ignoreError)
throw StatementException(_stmt, "SQLCloseCursor()");
}
}
Poco::UInt32 ODBCStatementImpl::next()
{
std::size_t count = 0;
if (nextRowReady())
{
Extractions& extracts = extractions();
Extractions::iterator it = extracts.begin();
Extractions::iterator itEnd = extracts.end();
std::size_t prevCount = 0;
for (std::size_t pos = 0; it != itEnd; ++it)
{
count = (*it)->extract(pos);
if (prevCount && count != prevCount)
throw IllegalStateException("Different extraction counts");
prevCount = count;
pos += (*it)->numOfColumnsHandled();
}
_stepCalled = false;
}
else
{
throw StatementException(_stmt,
std::string("Iterator Error: trying to access the next value"));
}
return static_cast<Poco::UInt32>(count);
return 0;
}
const Parameter& Statement::GetParameter(unsigned index) const
{
++index;
ParameterPool::const_iterator Iter = Parameters.find(index);
if (Iter == Parameters.end())
throw StatementException("Parameters not exists", seParameterNotExists);
return *Iter->second.Get();
}
void Statement::Execute()
{
CloseCursor();
SQLRETURN RetCode = SQLExecute(StmtHldr->GetHandle());
if (RetCode != SQL_SUCCESS)
throw StatementException(GetLastDBError(SQL_HANDLE_STMT, StmtHldr->GetHandle()), seErrorExecute);
IsOpen = true;
}
void StatementExecutor::prepare(const std::string& query)
{
if (_state >= STMT_COMPILED)
{
throw StatementException("Satement is already compiled");
}
// compile
int res = mysql_stmt_prepare(h, query.c_str(), static_cast<unsigned int>(query.length()));
if (res != 0)
{
throw StatementException("mysql_stmt_prepare error", h, query);
}
_query = query;
_state = STMT_COMPILED;
}
StatementExecutor::StatementExecutor(MYSQL* mysql)
: _pSessionHandle(mysql)
, _affectedRowCount(0)
{
if (!(_pHandle = mysql_stmt_init(mysql)))
throw StatementException("mysql_stmt_init error");
_state = STMT_INITED;
}
bool Statement::Fetch()
{
SQLRETURN Ret = SQLFetch(StmtHldr->GetHandle());
if (Ret == SQL_NO_DATA_FOUND)
return false;
if (Ret != SQL_SUCCESS && Ret != SQL_SUCCESS_WITH_INFO)
throw StatementException(GetLastDBError(SQL_HANDLE_STMT, StmtHldr->GetHandle()), seErrorFetch);
return true;
}
void Statement::CloseCursor()
{
if (IsOpen)
{
if (SQLCloseCursor(StmtHldr->GetHandle()) != SQL_SUCCESS)
throw StatementException("Error close cursor", seErrorCloseCursor);
IsOpen = false;
}
}
bool StatementExecutor::fetchColumn(size_t n, MYSQL_BIND *bind)
{
if (_state < STMT_EXECUTED)
{
throw StatementException("Satement is not executed yet");
}
int res = mysql_stmt_fetch_column(h, bind, static_cast<unsigned int>(n), 0);
if ((res != 0) && (res != MYSQL_NO_DATA))
{
std::ostringstream msg;
msg << "mysql_stmt_fetch_column(" << n << ") error";
throw StatementException(msg.str(), h, _query);
}
return (res == 0);
}
StatementExecutor::StatementExecutor(MYSQL* mysql)
{
h = mysql_stmt_init(mysql);
if (!h)
{
throw StatementException("mysql_stmt_init error");
}
_state = STMT_INITED;
}
Preparator::Preparator(const StatementHandle& rStmt,
const std::string& statement,
std::size_t maxFieldSize,
DataExtraction dataExtraction):
_rStmt(rStmt),
_maxFieldSize(maxFieldSize),
_dataExtraction(dataExtraction)
{
SQLCHAR* pStr = (SQLCHAR*) statement.c_str();
if (Utility::isError(Poco::Data::ODBC::SQLPrepare(_rStmt, pStr, (SQLINTEGER) statement.length())))
throw StatementException(_rStmt);
}
Preparation::Preparation(const StatementHandle& rStmt,
const std::string& statement,
std::size_t maxFieldSize,
DataExtraction dataExtraction):
_rStmt(rStmt),
_maxFieldSize(maxFieldSize),
_dataExtraction(dataExtraction)
{
POCO_SQLCHAR* pStr = (POCO_SQLCHAR*) statement.c_str();
if (Utility::isError(SQLPrepare(_rStmt, pStr, (SQLINTEGER) statement.length())))
throw StatementException(_rStmt);
SQLSMALLINT nCol;
if (Utility::isError(SQLNumResultCols(_rStmt, &nCol)))
throw StatementException(_rStmt);
if (nCol)
{
_pValues.resize(nCol, 0);
_pLengths.resize(nCol, 0);
}
}
void StatementExecutor::prepare(const std::string& query)
{
if (_state >= STMT_COMPILED)
{
_state = STMT_COMPILED;
return;
}
if (mysql_stmt_prepare(_pHandle, query.c_str(), static_cast<unsigned int>(query.length())) != 0)
throw StatementException("mysql_stmt_prepare error", _pHandle, query);
_query = query;
_state = STMT_COMPILED;
}
void ODBCStatementImpl::checkError(SQLRETURN rc, const std::string& msg)
{
if (SQL_NO_DATA == rc) return;
if (Utility::isError(rc))
{
std::ostringstream os;
os << std::endl << "Requested SQL statement: " << toString() << std::endl;
os << "Native SQL statement: " << nativeSQL() << std::endl;
std::string str(msg); str += os.str();
throw StatementException(_stmt, str);
}
}
void StatementExecutor::bindParams(MYSQL_BIND* params, size_t count)
{
if (_state < STMT_COMPILED)
{
throw StatementException("Satement is not compiled yet");
}
if (count != mysql_stmt_param_count(h))
{
throw StatementException("wrong bind parameters count", 0, _query);
}
if (count == 0)
{
return;
}
int res = mysql_stmt_bind_param(h, params);
if (res != 0)
{
throw StatementException("mysql_stmt_bind_param() error ", h, _query);
}
}
std::size_t MySQLStatementImpl::next()
{
if (!hasNext())
throw StatementException("No data received");
Poco::Data::AbstractExtractionVec::iterator it = extractions().begin();
Poco::Data::AbstractExtractionVec::iterator itEnd = extractions().end();
std::size_t pos = 0;
for (; it != itEnd; ++it)
{
(*it)->extract(pos);
pos += (*it)->numOfColumnsHandled();
}
_hasNext = NEXT_DONTKNOW;
return 1;
}
void ODBCStatementImpl::putData()
{
SQLPOINTER pParam = 0;
SQLINTEGER dataSize = 0;
SQLRETURN rc;
while (SQL_NEED_DATA == (rc = SQLParamData(_stmt, &pParam)))
{
poco_assert_dbg (pParam);
dataSize = (SQLINTEGER) _pBinder->parameterSize(pParam);
if (Utility::isError(SQLPutData(_stmt, pParam, dataSize)))
throw StatementException(_stmt, "SQLPutData()");
}
checkError(rc, "SQLParamData()");
}
void ODBCMetaColumn::getDescription()
{
std::memset(_columnDesc.name, 0, NAME_BUFFER_LENGTH);
_columnDesc.nameBufferLength = 0;
_columnDesc.dataType = 0;
_columnDesc.size = 0;
_columnDesc.decimalDigits = 0;
_columnDesc.isNullable = 0;
if (Utility::isError(Poco::Data::ODBC::SQLDescribeCol(_rStmt,
(SQLUSMALLINT) position() + 1, // ODBC columns are 1-based
_columnDesc.name,
NAME_BUFFER_LENGTH,
&_columnDesc.nameBufferLength,
&_columnDesc.dataType,
&_columnDesc.size,
&_columnDesc.decimalDigits,
&_columnDesc.isNullable)))
{
throw StatementException(_rStmt);
}
}
void Preparator::prepareBoolArray(std::size_t pos, SQLSMALLINT valueType, std::size_t length)
{
poco_assert_dbg (DE_BOUND == _dataExtraction);
poco_assert_dbg (pos < _values.size());
poco_assert_dbg (pos < _lengths.size());
poco_assert_dbg (pos < _lenLengths.size());
bool* pArray = (bool*) std::calloc(length, sizeof(bool));
_values[pos] = Any(pArray);
_lengths[pos] = 0;
_lenLengths[pos].resize(length);
_varLengthArrays.insert(IndexMap::value_type(pos, DT_BOOL_ARRAY));
if (Utility::isError(SQLBindCol(_rStmt,
(SQLUSMALLINT) pos + 1,
valueType,
(SQLPOINTER) pArray,
(SQLINTEGER) sizeof(bool),
&_lenLengths[pos][0])))
{
throw StatementException(_rStmt, "SQLBindCol()");
}
}
