Examples of java.math.BigDecimal.subtract()

java.math.BigDecimal.subtract()
Returns a {@code BigDecimal} whose value is {@code (this -subtrahend)}, and whose scale is {@code max(this.scale(),subtrahend.scale())}. @param subtrahend value to be subtracted from this {@code BigDecimal}. @return {@code this - subtrahend}

        while (localIter.hasNext()) {
            ShoppingCartItem item = (ShoppingCartItem) localIter.next();


            if (quantityToKeep.compareTo(item.getQuantity()) >= 0) {
                // quantityToKeep sufficient to keep it all... just reduce quantityToKeep and move on
                quantityToKeep = quantityToKeep.subtract(item.getQuantity());
            } else {
                // there is more in this than we want to keep, so reduce the quantity, or remove altogether...
                if (quantityToKeep.compareTo(BigDecimal.ZERO) == 0) {
                    // nothing left to keep, just remove it...
                    quantityRemoved = quantityRemoved.add(item.getQuantity());

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        if (inventoryType.equals("NON_SERIAL_INV_ITEM")) {
            // add an adjusting InventoryItemDetail so set ATP back to QOH: ATP = ATP + (QOH - ATP), diff = QOH - ATP
            BigDecimal atp = inventoryItem.get("availableToPromiseTotal") == null ? BigDecimal.ZERO : inventoryItem.getBigDecimal("availableToPromiseTotal");
            BigDecimal qoh = inventoryItem.get("quantityOnHandTotal") == null ? BigDecimal.ZERO : inventoryItem.getBigDecimal("quantityOnHandTotal");
            Map<String, Object> createDetailMap = UtilMisc.toMap("availableToPromiseDiff", qoh.subtract(atp),
                    "inventoryItemId", inventoryItem.get("inventoryItemId"), "userLogin", userLogin);
            try {
                Map<String, Object> result = dctx.getDispatcher().runSync("createInventoryItemDetail", createDetailMap);
                if (ServiceUtil.isError(result)) {
                    return ServiceUtil.returnError("Inventory Item Detail create problem in complete inventory transfer", null, null, result);

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        // re-set the fields on the item
        if (inventoryType.equals("NON_SERIAL_INV_ITEM")) {
            // add an adjusting InventoryItemDetail so set ATP back to QOH: ATP = ATP + (QOH - ATP), diff = QOH - ATP
            BigDecimal atp = inventoryItem.get("availableToPromiseTotal") == null ? BigDecimal.ZERO : inventoryItem.getBigDecimal("availableToPromiseTotal");
            BigDecimal qoh = inventoryItem.get("quantityOnHandTotal") == null ? BigDecimal.ZERO : inventoryItem.getBigDecimal("quantityOnHandTotal");
            Map<String, Object> createDetailMap = UtilMisc.toMap("availableToPromiseDiff", qoh.subtract(atp),
                                                 "inventoryItemId", inventoryItem.get("inventoryItemId"),
                                                 "userLogin", userLogin);
            try {
                Map<String, Object> result = dctx.getDispatcher().runSync("createInventoryItemDetail", createDetailMap);
                if (ServiceUtil.isError(result)) {

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        }


        String itemStatus = orderItem.getString("statusId");
        BigDecimal orderQty = orderItem.getBigDecimal("quantity");
        if (orderItem.getBigDecimal("cancelQuantity") != null) {
            orderQty = orderQty.subtract(orderItem.getBigDecimal("cancelQuantity"));
        }


        // get the returnable quantity
        BigDecimal returnableQuantity = BigDecimal.ZERO;
        if (returnable && (itemStatus.equals("ITEM_APPROVED") || itemStatus.equals("ITEM_COMPLETED"))) {

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                //calculate amount for each AcctgTransEntry according to glAccountId based on debit and credit
                debitCreditFlag = acctgTransEntry.getString("debitCreditFlag");
                if ("D".equalsIgnoreCase(debitCreditFlag)) {
                    reconciledBalance = reconciledBalance.add(acctgTransEntry.getBigDecimal("amount"));  //total balance per glAccountId
                } else {
                    reconciledBalance = reconciledBalance.subtract(acctgTransEntry.getBigDecimal("amount"));  //total balance per glAccountId
                }
            }
        } catch (GenericEntityException e) {
            Debug.logError(e, module);
            return "error";

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            if (results.get("messages") != null) {
                List<String> message = UtilGenerics.checkList(results.get("messages"));
                messages.addAll(message);
            }
            if (results.get("processAmount") != null) {
                totalRemaining = totalRemaining.subtract(((BigDecimal) results.get("processAmount")));
            }
        }


        Debug.logInfo("Finished with auth(s) checking results", module);

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        // go through the items and reduce quantityToKeep by the item quantities until it is 0, then remove the remaining...
        BigDecimal quantityToKeep = quantity;
        for(ShoppingCartItem item : cartItems) {
            if (quantityToKeep.compareTo(item.getQuantity()) >= 0) {
                // quantityToKeep sufficient to keep it all... just reduce quantityToKeep and move on
                quantityToKeep = quantityToKeep.subtract(item.getQuantity());
            } else {
                // there is more in this than we want to keep, so reduce the quantity, or remove altogether...
                if (quantityToKeep.compareTo(BigDecimal.ZERO) == 0) {
                    // nothing left to keep, just remove it...
                    quantityRemoved = quantityRemoved.add(item.getQuantity());

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     */
    public static BigDecimal availableToCapture(GenericValue billingAccount) throws GenericEntityException {
        BigDecimal netBalance = getBillingAccountNetBalance(billingAccount.getDelegator(), billingAccount.getString("billingAccountId"));
        BigDecimal accountLimit = billingAccount.getBigDecimal("accountLimit");


        return accountLimit.subtract(netBalance).setScale(decimals, rounding);
    }


    public static Map<String, Object> calcBillingAccountBalance(DispatchContext dctx, Map<String, ? extends Object> context) {
        Delegator delegator = dctx.getDelegator();
        String billingAccountId = (String) context.get("billingAccountId");

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            BigDecimal price = quote.getPrice();
            BigDecimal orderFee = order.getOrderFee();
            BigDecimal balance = account.getBalance();
            total = (new BigDecimal(quantity).multiply(price)).add(orderFee);
            account.setBalance(balance.subtract(total));


            if (orderProcessingMode == TradeConfig.SYNCH)
                completeOrder(order.getOrderID(), false);
            else if (orderProcessingMode == TradeConfig.ASYNCH_2PHASE)
                queueOrder(order.getOrderID(), true);

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        BigDecimal newPrice = changeFactor.multiply(oldPrice).setScale(2, BigDecimal.ROUND_HALF_UP);


        quote.setPrice(newPrice);
        quote.setVolume(quote.getVolume() + sharesTraded);
        quote.setChange((newPrice.subtract(quote.getOpen()).doubleValue()));
        if (newPrice.compareTo(quote.getHigh()) == 1) quote.setHigh(newPrice);
        else if (newPrice.compareTo(quote.getLow()) == -1) quote.setLow(newPrice);


        entityManager.merge(quote);

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