How to use

getNumberOfUnpaidInvoices

method

in

com.ning.billing.overdue.config.api.BillingState

@Override
public boolean evaluate(final BillingState state, final LocalDate date) {
  LocalDate unpaidInvoiceTriggerDate = null;
  if (timeSinceEarliestUnpaidInvoiceEqualsOrExceeds != null && state.getDateOfEarliestUnpaidInvoice() != null) {  // no date => no unpaid invoices
    unpaidInvoiceTriggerDate = state.getDateOfEarliestUnpaidInvoice().plus(timeSinceEarliestUnpaidInvoiceEqualsOrExceeds.toJodaPeriod());
  }
  return
      (numberOfUnpaidInvoicesEqualsOrExceeds == null || state.getNumberOfUnpaidInvoices() >= numberOfUnpaidInvoicesEqualsOrExceeds) &&
      (totalUnpaidInvoiceBalanceEqualsOrExceeds == null || totalUnpaidInvoiceBalanceEqualsOrExceeds.compareTo(state.getBalanceOfUnpaidInvoices()) <= 0) &&
      (timeSinceEarliestUnpaidInvoiceEqualsOrExceeds == null ||
       (unpaidInvoiceTriggerDate != null && !unpaidInvoiceTriggerDate.isAfter(date))) &&
      (responseForLastFailedPayment == null || responseIsIn(state.getResponseForLastFailedPayment(), responseForLastFailedPayment)) &&
      (controlTag == null || isTagIn(controlTag, state.getTags()));
}