Function API_ROUTINE isc_dsql_prepare

src/yvalve/why.cpp:2664–2709

Prepare a statement for execution.

// Prepare a statement for execution.
ISC_STATUS API_ROUTINE isc_dsql_prepare(ISC_STATUS* userStatus, isc_tr_handle* traHandle,
	isc_stmt_handle* stmtHandle, USHORT stmtLength, const SCHAR* sqlStmt, USHORT dialect,
	XSQLDA* sqlda)
{
	StatusVector status(userStatus);
	CheckStatusWrapper statusWrapper(&status);

	try
	{
		RefPtr<IscStatement> statement(translateHandle(statements, stmtHandle));
		RefPtr<YTransaction> transaction;

		if (statement->statement)
		{
			statement->closeStatement(&statusWrapper);
			if (status.getState() & IStatus::STATE_ERRORS)
				return status[1];
		}

		statement->cursorName = "";

		if (traHandle && *traHandle)
			transaction = translateHandle(transactions, traHandle);

		statement->statement = statement->attachment.get()->prepare(&statusWrapper, transaction,
			stmtLength, sqlStmt, dialect, IStatement::PREPARE_PREFETCH_METADATA);

		if (!(status.getState() & IStatus::STATE_ERRORS))
		{
			StatusVector tempStatus(NULL);
			CheckStatusWrapper tempCheckStatusWrapper(&tempStatus);

			RefPtr<IMessageMetadata> parameters(REF_NO_INCR,
				statement->statement->next->getOutputMetadata(&tempCheckStatusWrapper));
			tempStatus.check();

			sqldaDescribeParameters(sqlda, parameters);
		}
	}
	catch (const Exception& e)
	{
		e.stuffException(&statusWrapper);
	}

	return status[1];
}


// Prepare a statement for execution.