C++ pointer::setFieldU64方法代码示例

TER Change::applyFee ()
{

    SLE::pointer feeObject = mEngine->entryCache (
        ltFEE_SETTINGS, Ledger::getLedgerFeeIndex ());

    if (!feeObject)
        feeObject = mEngine->entryCreate (
            ltFEE_SETTINGS, Ledger::getLedgerFeeIndex ());

    m_journal.trace << 
        "Previous fee object: " << feeObject->getJson (0);

    feeObject->setFieldU64 (
        sfBaseFee, mTxn.getFieldU64 (sfBaseFee));
    feeObject->setFieldU32 (
        sfReferenceFeeUnits, mTxn.getFieldU32 (sfReferenceFeeUnits));
    feeObject->setFieldU32 (
        sfReserveBase, mTxn.getFieldU32 (sfReserveBase));
    feeObject->setFieldU32 (
        sfReserveIncrement, mTxn.getFieldU32 (sfReserveIncrement));

    mEngine->entryModify (feeObject);

    m_journal.trace << 
        "New fee object: " << feeObject->getJson (0);
    m_journal.warning << "Fees have been changed";
    return tesSUCCESS;
}

    TER doApply () override
    {
        assert (mTxnAccount);

        // A ticket counts against the reserve of the issuing account, but we check
        // the starting balance because we want to allow dipping into the reserve to
        // pay fees.
        auto const accountReserve (mEngine->getLedger ()->getReserve (
            mTxnAccount->getFieldU32 (sfOwnerCount) + 1));

        if (mPriorBalance.getNValue () < accountReserve)
            return tecINSUFFICIENT_RESERVE;

        std::uint32_t expiration (0);

        if (mTxn.isFieldPresent (sfExpiration))
        {
            expiration = mTxn.getFieldU32 (sfExpiration);

            if (!expiration)
            {
                m_journal.warning <<
                    "Malformed ticket requestion: bad expiration";

                return temBAD_EXPIRATION;
            }

            if (mEngine->getLedger ()->getParentCloseTimeNC () >= expiration)
                return tesSUCCESS;
        }

        SLE::pointer sleTicket = mEngine->entryCreate (ltTICKET,
            Ledger::getTicketIndex (mTxnAccountID, mTxn.getSequence ()));

        sleTicket->setFieldAccount (sfAccount, mTxnAccountID);
        sleTicket->setFieldU32 (sfSequence, mTxn.getSequence ());

        if (expiration != 0)
            sleTicket->setFieldU32 (sfExpiration, expiration);

        if (mTxn.isFieldPresent (sfTarget))
        {
            Account const target_account (mTxn.getFieldAccount160 (sfTarget));

            SLE::pointer sleTarget = mEngine->entryCache (ltACCOUNT_ROOT,
                Ledger::getAccountRootIndex (target_account));

            // Destination account does not exist.
            if (!sleTarget)
                return tecNO_TARGET;

            // The issuing account is the default account to which the ticket
            // applies so don't bother saving it if that's what's specified.
            if (target_account != mTxnAccountID)
                sleTicket->setFieldAccount (sfTarget, target_account);
        }

        std::uint64_t hint;

        auto describer = [&](SLE::pointer p, bool b)
        {
            Ledger::ownerDirDescriber(p, b, mTxnAccountID);
        };
        TER result = mEngine->view ().dirAdd (
            hint,
            Ledger::getOwnerDirIndex (mTxnAccountID),
            sleTicket->getIndex (),
            describer);

        m_journal.trace <<
            "Creating ticket " << to_string (sleTicket->getIndex ()) <<
            ": " << transHuman (result);

        if (result != tesSUCCESS)
            return result;

        sleTicket->setFieldU64(sfOwnerNode, hint);

        // If we succeeded, the new entry counts agains the creator's reserve.
        mEngine->view ().incrementOwnerCount (mTxnAccount);

        return result;
    }

//.........这里部分代码省略.........

        std::uint64_t uOwnerNode;
        std::uint64_t uBookNode;
        uint256 uDirectory;

        // Add offer to owner's directory.
        terResult = view.dirAdd (uOwnerNode,
            Ledger::getOwnerDirIndex (mTxnAccountID), uLedgerIndex,
            std::bind (
                &Ledger::ownerDirDescriber, std::placeholders::_1,
                std::placeholders::_2, mTxnAccountID));

        if (tesSUCCESS == terResult)
        {
            // Update owner count.
            view.ownerCountAdjust (mTxnAccountID, 1, sleCreator);

            uint256 const uBookBase (Ledger::getBookBase (
                {{uPaysCurrency, uPaysIssuerID},
                    {uGetsCurrency, uGetsIssuerID}}));

            if (m_journal.debug) m_journal.debug <<
                "adding to book: " << to_string (uBookBase) <<
                " : " << saTakerPays.getHumanCurrency () <<
                "/" << to_string (saTakerPays.getIssuer ()) <<
                " -> " << saTakerGets.getHumanCurrency () <<
                "/" << to_string (saTakerGets.getIssuer ());

            // We use the original rate to place the offer.
            uDirectory = Ledger::getQualityIndex (uBookBase, uRate);

            // Add offer to order book.
            terResult = view.dirAdd (uBookNode, uDirectory, uLedgerIndex,
                std::bind (
                    &Ledger::qualityDirDescriber, std::placeholders::_1,
                    std::placeholders::_2, saTakerPays.getCurrency (),
                    uPaysIssuerID, saTakerGets.getCurrency (),
                    uGetsIssuerID, uRate));
        }

        if (tesSUCCESS == terResult)
        {
            if (m_journal.debug)
            {
                m_journal.debug <<
                    "sfAccount=" <<
                    to_string (mTxnAccountID);
                m_journal.debug <<
                    "uPaysIssuerID=" <<
                    to_string (uPaysIssuerID);
                m_journal.debug <<
                    "uGetsIssuerID=" <<
                    to_string (uGetsIssuerID);
                m_journal.debug <<
                    "saTakerPays.isNative()=" <<
                    saTakerPays.isNative ();
                m_journal.debug <<
                    "saTakerGets.isNative()=" <<
                    saTakerGets.isNative ();
                m_journal.debug <<
                    "uPaysCurrency=" <<
                    saTakerPays.getHumanCurrency ();
                m_journal.debug <<
                    "uGetsCurrency=" <<
                    saTakerGets.getHumanCurrency ();
            }

            SLE::pointer sleOffer (mEngine->entryCreate (ltOFFER, uLedgerIndex));

            sleOffer->setFieldAccount (sfAccount, mTxnAccountID);
            sleOffer->setFieldU32 (sfSequence, uSequence);
            sleOffer->setFieldH256 (sfBookDirectory, uDirectory);
            sleOffer->setFieldAmount (sfTakerPays, saTakerPays);
            sleOffer->setFieldAmount (sfTakerGets, saTakerGets);
            sleOffer->setFieldU64 (sfOwnerNode, uOwnerNode);
            sleOffer->setFieldU64 (sfBookNode, uBookNode);

            if (uExpiration)
                sleOffer->setFieldU32 (sfExpiration, uExpiration);

            if (bPassive)
                sleOffer->setFlag (lsfPassive);

            if (bSell)
                sleOffer->setFlag (lsfSell);

            if (m_journal.debug) m_journal.debug <<
                "final terResult=" << transToken (terResult) <<
                " sleOffer=" << sleOffer->getJson (0);
        }
    }

    if (terResult != tesSUCCESS)
    {
        m_journal.debug <<
            "final terResult=" << transToken (terResult);
    }

    return terResult;
}

TER
CreateTicket::doApply ()
{
    auto const sle = view().peek(keylet::account(account_));

    // A ticket counts against the reserve of the issuing account, but we
    // check the starting balance because we want to allow dipping into the
    // reserve to pay fees.
    {
        auto const reserve = view().fees().accountReserve(
            sle->getFieldU32(sfOwnerCount) + 1);

        if (mPriorBalance < reserve)
            return tecINSUFFICIENT_RESERVE;
    }

    NetClock::time_point expiration{};

    if (ctx_.tx.isFieldPresent (sfExpiration))
    {
        expiration = NetClock::time_point(NetClock::duration(ctx_.tx[sfExpiration]));

        if (view().parentCloseTime() >= expiration)
            return tesSUCCESS;
    }

    SLE::pointer sleTicket = std::make_shared<SLE>(ltTICKET,
        getTicketIndex (account_, ctx_.tx.getSequence ()));
    sleTicket->setAccountID (sfAccount, account_);
    sleTicket->setFieldU32 (sfSequence, ctx_.tx.getSequence ());
    if (expiration != NetClock::time_point{})
        sleTicket->setFieldU32 (sfExpiration, expiration.time_since_epoch().count());
    view().insert (sleTicket);

    if (ctx_.tx.isFieldPresent (sfTarget))
    {
        AccountID const target_account (ctx_.tx.getAccountID (sfTarget));

        SLE::pointer sleTarget = view().peek (keylet::account(target_account));

        // Destination account does not exist.
        if (!sleTarget)
            return tecNO_TARGET;

        // The issuing account is the default account to which the ticket
        // applies so don't bother saving it if that's what's specified.
        if (target_account != account_)
            sleTicket->setAccountID (sfTarget, target_account);
    }

    auto viewJ = ctx_.app.journal ("View");

    auto const page = dirAdd(view(), keylet::ownerDir (account_),
        sleTicket->key(), false, describeOwnerDir (account_), viewJ);

    JLOG(j_.trace()) <<
        "Creating ticket " << to_string (sleTicket->key()) <<
        ": " << (page ? "success" : "failure");

    if (!page)
        return tecDIR_FULL;

    sleTicket->setFieldU64(sfOwnerNode, *page);

    // If we succeeded, the new entry counts against the
    // creator's reserve.
    adjustOwnerCount(view(), sle, 1, viewJ);
    return tesSUCCESS;
}