org.mustangproject.ZUGFeRD.LineCalculator Maven / Gradle / Ivy
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FOSS Java library to read, write and validate european electronic invoices and orders in the UN/CEFACT
Cross Industry Invoice based formats Factur-X/ZUGFeRD, XRechnung and Order-X in your invoice PDFs.
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package org.mustangproject.ZUGFeRD;
import java.math.BigDecimal;
import java.math.RoundingMode;
/***
* the linecalculator does the math within an item line, and e.g. calculates quantity*price.
* @see TransactionCalculator
*/
public class LineCalculator {
private final BigDecimal price;
private final BigDecimal priceGross;
private final BigDecimal itemTotalNetAmount;
private final BigDecimal itemTotalVATAmount;
private BigDecimal allowance = BigDecimal.ZERO;
private BigDecimal charge = BigDecimal.ZERO;
private BigDecimal allowanceItemTotal = BigDecimal.ZERO;
public LineCalculator(IZUGFeRDExportableItem currentItem) {
if (currentItem.getItemAllowances() != null && currentItem.getItemAllowances().length > 0) {
for (IZUGFeRDAllowanceCharge allowance : currentItem.getItemAllowances()) {
addAllowance(allowance.getTotalAmount(currentItem));
}
}
if (currentItem.getItemCharges() != null && currentItem.getItemCharges().length > 0) {
for (IZUGFeRDAllowanceCharge charge : currentItem.getItemCharges()) {
addCharge(charge.getTotalAmount(currentItem));
}
}
if (currentItem.getItemTotalAllowances() != null && currentItem.getItemTotalAllowances().length > 0) {
for (final IZUGFeRDAllowanceCharge itemTotalAllowance : currentItem.getItemTotalAllowances()) {
addAllowanceItemTotal(itemTotalAllowance.getTotalAmount(currentItem));
}
}
BigDecimal vatPercent = null;
if (currentItem.getProduct()!=null) {
vatPercent = currentItem.getProduct().getVATPercent();
}
if (vatPercent == null) {
vatPercent = BigDecimal.ZERO;
}
BigDecimal multiplicator = vatPercent.divide(BigDecimal.valueOf(100));
priceGross = currentItem.getPrice(); // see https://github.com/ZUGFeRD/mustangproject/issues/159
price = priceGross.subtract(allowance).add(charge);
BigDecimal quantity=BigDecimal.ZERO;
if ((currentItem!=null)&&(currentItem.getQuantity()!=null)) {
quantity=currentItem.getQuantity();
}
// Division/Zero occurred here.
// Used the setScale only because that's also done in getBasisQuantity
BigDecimal basisQuantity = currentItem.getBasisQuantity().compareTo(BigDecimal.ZERO) == 0
? BigDecimal.ONE.setScale(4)
: currentItem.getBasisQuantity();
itemTotalNetAmount = quantity.multiply(getPrice()).divide(basisQuantity, 18, RoundingMode.HALF_UP)
.subtract(allowanceItemTotal).setScale(2, RoundingMode.HALF_UP);
itemTotalVATAmount = itemTotalNetAmount.multiply(multiplicator);
}
public BigDecimal getPrice() {
return price;
}
public BigDecimal getItemTotalNetAmount() {
return itemTotalNetAmount;
}
public BigDecimal getItemTotalVATAmount() {
return itemTotalVATAmount;
}
public BigDecimal getItemTotalGrossAmount() {
return itemTotalNetAmount;
}
public BigDecimal getPriceGross() {
return priceGross;
}
public void addAllowance(BigDecimal b) {
allowance = allowance.add(b);
}
public void addCharge(BigDecimal b) {
charge = charge.add(b);
}
public void addAllowanceItemTotal(BigDecimal b) {
allowanceItemTotal = allowanceItemTotal.add(b);
}
}
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