Example usage for java.math BigDecimal ROUND_HALF_DOWN

Introduction

In this page you can find the example usage for java.math BigDecimal ROUND_HALF_DOWN.

Prototype

int ROUND_HALF_DOWN

To view the source code for java.math BigDecimal ROUND_HALF_DOWN.

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Document

Rounding mode to round towards "nearest neighbor" unless both neighbors are equidistant, in which case round down.

Usage

From source file:org.sofun.core.kup.policy.KupSettledLifeCyclePolicyManager.java

/**
 * Kup life cycle management.//from w  w w . j a  v  a 2 s .  com
 * 
 * @throws Exception
 */
@Schedule(minute = "*/5", hour = "*", persistent = false)
public void check() throws Exception {

    if (!available) {
        return;
    } else {
        available = false;
    }

    try {

        log.debug("Checking Kups and apply policy...");

        //
        // Deal with Settled Kups
        //

        final byte[] settledStatus = new byte[1];
        settledStatus[0] = KupStatus.SETTLED;
        String[] types = new String[] { KupType.GAMBLING_FR };

        ListIterator<Kup> kupsIter = kups.getKupsByStatus(settledStatus, types).listIterator();
        while (kupsIter.hasNext()) {

            Kup kup = kupsIter.next();
            // Ensure no changes have been made by another transaction in
            // the mean time.
            em.refresh(kup);
            if (kup.getStatus() != KupStatus.SETTLED) {
                continue;
            }

            Map<Integer, Float> repartition = kups.getWinningsRepartitionRulesFor(kup);
            final int numberOfWinners = repartition.size();

            if (kup.getParticipants().size() < numberOfWinners) {
                kups.cancelKup(kup);
                log.info("Kup with id=" + String.valueOf(kup.getId())
                        + " has been cancelled because participants are " + "below the amount of winners.");
                continue;
            }

            KupRankingTable table = kup.getRankingTable();
            List<MemberRankingTableEntry> entries = new ArrayList<MemberRankingTableEntry>(table.getEntries());
            entries = entries.subList(0, numberOfWinners);

            // Cancel if winnings < bet for one of the winners.
            boolean cancelled = false;
            for (int i = 0; i < numberOfWinners - 1; i++) {

                final float jackpot = kup.getEffectiveJackpot();
                final float amount = jackpot * repartition.get(i + 1) / 100;

                if (kup.getStake() > amount) {
                    cancelled = true;
                    break;
                }

            }

            if (!cancelled) {

                // Credit winners.

                final Date now = new Date();

                final float jackpot = kup.getEffectiveJackpot();
                if (kup.getJackpot() < kup.getGuaranteedPrice()) {
                    final float house = kup.getGuaranteedPrice() - kup.getJackpot();
                    final BigDecimal houseAmount = new BigDecimal(house);
                    houseAmount.setScale(2, BigDecimal.ROUND_HALF_UP);
                    SofunTransaction txn = new SofunTransactionImpl(kup, now, houseAmount.floatValue(),
                            kup.getStakeCurrency(), SofunTransactionType.TXN_GUARANTEED_PRICE,
                            SofunTransactionType.TXN_GUARANTEED_PRICE);
                    txn.setDebit(true);
                    em.persist(txn);
                    log.info("SOFUN TXN for kup w/ uuid=" + txn.getKup().getId() + " type=" + txn.getType()
                            + " amount=" + houseAmount.floatValue());
                } else {
                    final float rake = kup.getRakeAmount();
                    if (rake > 0) {
                        final BigDecimal rakeAmount = new BigDecimal(rake);
                        rakeAmount.setScale(2, BigDecimal.ROUND_HALF_UP);
                        SofunTransaction txn = new SofunTransactionImpl(kup, now, rakeAmount.floatValue(),
                                kup.getStakeCurrency(), SofunTransactionType.TXN_RACK,
                                SofunTransactionType.TXN_RACK);
                        txn.setCredit(true);
                        em.persist(txn);
                        log.info("SOFUN TXN for kup w/ uuid=" + txn.getKup().getId() + " type=" + txn.getType()
                                + " amount=" + rakeAmount.floatValue());
                    }
                }

                int i = 0;
                for (MemberRankingTableEntry entry : entries) {

                    final float amount = jackpot * repartition.get(i + 1) / 100;
                    Member member = entry.getMember();

                    // Round down (inferior cent) as specified in rules.
                    BigDecimal wiredAmount = new BigDecimal(amount);
                    wiredAmount = wiredAmount.setScale(2, BigDecimal.ROUND_HALF_DOWN);

                    MemberTransaction txn = new MemberTransactionImpl(now, wiredAmount.floatValue(),
                            kup.getStakeCurrency(), MemberTransactionType.BET_CREDIT);
                    txn.setLabel(MemberTransactionType.BET_CREDIT);
                    txn.setCredit(true);
                    txn.setStatusCode("00000");
                    txn.setStatus(MemberTransactionStatus.INTERNAL);
                    txn.setMemberCreditBefore(member.getMemberCredit().getCredit());
                    txn.setMemberCreditAfter(member.getMemberCredit().getCredit() + wiredAmount.floatValue());
                    member.addTransaction(txn);
                    txn.setMember(member);

                    log.info("Member with email=" + member.getEmail() + " finished " + String.valueOf(i + 1)
                            + " out of " + kup.getParticipants().size() + " in kup w/ uuid=" + kup.getId()
                            + " txn of type=" + txn.getType() + " with amount of: " + wiredAmount.floatValue());

                    // Record
                    KupMemberBet bet = new KupMemberBetImpl(member, kup, txn);
                    bet.setEffectiveDate(now);
                    em.persist(bet);

                    entry.setWinnings(wiredAmount.floatValue());

                    i++;
                }

                log.info(
                        "Kup with id=" + String.valueOf(kup.getId()) + " has now status=" + KupStatus.PAID_OUT);
                kup.setStatus(KupStatus.PAID_OUT);
            } else {
                kups.cancelKup(kup);
                log.info("Kup with id=" + String.valueOf(kup.getId())
                        + " has been cancelled because the winnings are "
                        + "below the stake for some of the winners.");

            }

        }
    } catch (Throwable t) {
        log.error(t.getMessage());
        t.printStackTrace();
    } finally {
        available = true;
    }

    // Cancel status in exceptional situations will be handled manually per
    // administrator request.
    // @see KupeService.cancelKup()

}

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