Method transactRequest

src/jrd/jrd.cpp:4748–4861

void JAttachment::transactRequest(CheckStatusWrapper* user_status, ITransaction* tra,
	unsigned int blr_length, const unsigned char* blr,
	unsigned int in_msg_length, const unsigned char* in_msg,
	unsigned int out_msg_length, unsigned char* out_msg)
{
/**************************************
 *
 *	i s c _ t r a n s a c t _ r e q u e s t
 *
 **************************************
 *
 * Functional description
 *	Execute a procedure.
 *
 **************************************/
	try
	{
		JTransaction* const jt = getTransactionInterface(user_status, tra);
		EngineContextHolder tdbb(user_status, this, FB_FUNCTION);

		jrd_tra* transaction = jt->getHandle();
		validateHandle(tdbb, transaction);
		check_database(tdbb);

		try
		{
			Jrd::Attachment* const att = transaction->tra_attachment;

			const MessageNode* inMessage = NULL;
			const MessageNode* outMessage = NULL;

			Request* request = NULL;
			MemoryPool* new_pool = att->createPool();

			try
			{
				Jrd::ContextPoolHolder context(tdbb, new_pool);

				CompilerScratch* csb = PAR_parse(tdbb, reinterpret_cast<const UCHAR*>(blr),
					blr_length, false);

				for (FB_SIZE_T i = 0; i < csb->csb_rpt.getCount(); i++)
				{
					if (const auto node = csb->csb_rpt[i].csb_message)
					{
						if (node->messageNumber == 0)
							inMessage = node;
						else if (node->messageNumber == 1)
							outMessage = node;
					}
				}

				request = Statement::makeRequest(tdbb, csb, false);
				request->getStatement()->verifyAccess(tdbb);
			}
			catch (const Exception&)
			{
				if (request)