C++ (Cpp) Attachment::prepareStatement Examples

Example #1

File: execute_statement.cpp Project: andrewleech/firebird

void ExecuteStatement::execute(Jrd::thread_db* tdbb, jrd_req* request, DSC* desc)
{
    SET_TDBB(tdbb);

    Attachment* attachment = tdbb->getAttachment();
    jrd_tra* const transaction = tdbb->getTransaction();

    if (transaction->tra_callback_count >= MAX_CALLBACKS)
    {
        ERR_post(Arg::Gds(isc_exec_sql_max_call_exceeded));
    }

    Firebird::string sqlStatementText;
    getString(tdbb, sqlStatementText, desc, request);

    transaction->tra_callback_count++;

    try
    {
        AutoPtr<PreparedStatement> stmt(attachment->prepareStatement(
                                            tdbb, *tdbb->getDefaultPool(), transaction, sqlStatementText));

        // Other requests appear to be incorrect in this context
        const long requests =
            (1 << REQ_INSERT) | (1 << REQ_DELETE) | (1 << REQ_UPDATE) |
            (1 << REQ_DDL) | (1 << REQ_SET_GENERATOR) | (1 << REQ_EXEC_PROCEDURE) |
            (1 << REQ_EXEC_BLOCK);

        if (!((1 << stmt->getRequest()->req_type) & requests))
        {
            ERR_post(Arg::Gds(isc_sqlerr) << Arg::Num(-902) <<
                     Arg::Gds(isc_exec_sql_invalid_req) << Arg::Str(sqlStatementText));
        }

        stmt->execute(tdbb, transaction);

        fb_assert(transaction == tdbb->getTransaction());
    }
    catch (const Firebird::Exception&)
    {
        transaction->tra_callback_count--;
        throw;
    }

    transaction->tra_callback_count--;
}