Method fillParams

src/jrd/trace/TraceObjects.cpp:277–323

/// TraceSQLStatementImpl::DSQLParamsImpl

void TraceSQLStatementImpl::DSQLParamsImpl::fillParams()
{
	if (m_descs.getCount() || !m_params || m_params->getCount() == 0)
		return;

	if (!m_stmt->getDsqlStatement()->isDml())
	{
		fb_assert(false);
		return;
	}

	const auto dmlRequest = (DsqlDmlRequest*) m_stmt;

	USHORT first_index = 0;
	for (FB_SIZE_T i = 0 ; i < m_params->getCount(); ++i)
	{
		const dsql_par* parameter = (*m_params)[i];

		if (parameter->par_index)
		{
			// Use descriptor for nulls signaling
			USHORT null_flag = 0;
			if (parameter->par_null)
			{
				const UCHAR* msgBuffer =
					dmlRequest->req_msg_buffers[parameter->par_null->par_message->msg_buffer_number];

				if (*(SSHORT*) (msgBuffer + (IPTR) parameter->par_null->par_desc.dsc_address))
					null_flag = DSC_null;
			}

			dsc* desc = NULL;

			const FB_SIZE_T idx = parameter->par_index - 1;
			if (idx >= m_descs.getCount())
				m_descs.getBuffer(idx + 1);

			desc = &m_descs[idx];

			*desc = parameter->par_desc;
			desc->dsc_flags |= null_flag;

			UCHAR* msgBuffer = dmlRequest->req_msg_buffers[parameter->par_message->msg_buffer_number];
			desc->dsc_address = msgBuffer + (IPTR) desc->dsc_address;
		}
	}
}


FB_SIZE_T TraceSQLStatementImpl::DSQLParamsImpl::getCount()