public static BigDecimal getLoanPaymentSize()

in service/src/main/java/org/apache/fineract/cn/individuallending/internal/service/costcomponent/CostComponentService.java [178:219]

38 lines of code
2 McCabe index (conditional complexity)


  public static BigDecimal getLoanPaymentSize(
      final BigDecimal maximumBalanceSize,
      final BigDecimal disbursementSize,
      final BigDecimal interest,
      final int minorCurrencyUnitDigits,
      final List<ScheduledCharge> scheduledCharges) {
    final int precision = disbursementSize.precision() - disbursementSize.scale() + minorCurrencyUnitDigits + EXTRA_PRECISION;
    final Map<Period, BigDecimal> accrualRatesByPeriod
        = PeriodChargeCalculator.getPeriodAccrualInterestRate(interest, scheduledCharges, precision);

    final int periodCount = accrualRatesByPeriod.size();
    if (periodCount == 0)
      return disbursementSize;

    final BigDecimal geometricMeanAccrualRate = accrualRatesByPeriod.values().stream()
        .collect(RateCollectors.geometricMean(precision));

    final List<ScheduledCharge> disbursementFees = scheduledCharges.stream()
        .filter(x -> x.getScheduledAction().getAction().equals(Action.DISBURSE))
        .collect(Collectors.toList());
    final PaymentBuilder paymentBuilder = getCostComponentsForScheduledCharges(
        disbursementFees,
        maximumBalanceSize,
        new SimulatedRunningBalances(),
        BigDecimal.ZERO, //Contractual repayment not determined yet here.
        disbursementSize,
        BigDecimal.ZERO,
        interest,
        minorCurrencyUnitDigits,
        false
        );
    final BigDecimal finalDisbursementSize = paymentBuilder.getBalanceAdjustment(
        AccountDesignators.CUSTOMER_LOAN_PRINCIPAL,
        AccountDesignators.CUSTOMER_LOAN_FEES).negate();

    final BigDecimal presentValue = AnnuityPayment.calculate(
        finalDisbursementSize,
        geometricMeanAccrualRate,
        periodCount,
        minorCurrencyUnitDigits);
    return presentValue.setScale(minorCurrencyUnitDigits, BigDecimal.ROUND_HALF_EVEN);
  }