Add Tax ExemptionReasonCode on document level.

Author: langfr

library/src/main/java/org/mustangproject/ZUGFeRD/TransactionCalculator.java

@@ -208,6 +208,10 @@ protected HashMap<BigDecimal, VATAmount> getVATPercentAmountMap() {
 				if (reasonText != null) {
 					itemVATAmount.setVatExemptionReasonText(reasonText);
 				}
+				String reasonCode = currentItem.getProduct().getTaxExemptionReasonCode();
+				if (reasonCode != null) {
+					itemVATAmount.setVatExemptionReasonCode(reasonCode);
+				}
 				VATAmount current = hm.get(percent.stripTrailingZeros());
 				if (current == null) {
 					hm.put(percent.stripTrailingZeros(), itemVATAmount);
@@ -281,6 +285,10 @@ protected List<VATAmount> getVATAmountList() {
 			if (reasonText != null) {
 				itemVATAmount.setVatExemptionReasonText(reasonText);
 			}
+			final String reasonCode = currentItem.getProduct().getTaxExemptionReasonCode();
+			if (reasonCode != null) {
+				itemVATAmount.setVatExemptionReasonCode(reasonCode);
+			}
 			final Optional<VATAmount> currentVatAmount = this.getCurrentVatAmount(vatAmounts, currentItem.getProduct().getTaxCategoryCode(), percent);
 			if (currentVatAmount.isEmpty()) {
 				vatAmounts.add(itemVATAmount);

library/src/main/java/org/mustangproject/ZUGFeRD/VATAmount.java

@@ -39,6 +39,8 @@ public class VATAmount {
 
 	protected String vatExemptionReasonText;
 
+	protected String vatExemptionReasonCode;
+
 	protected String dueDateTypeCode;
 
 
@@ -105,6 +107,15 @@ public VATAmount setVatExemptionReasonText(String theText) {
 		return this;
 	}
 
+	public String getVatExemptionReasonCode() {
+		return vatExemptionReasonCode;
+	}
+
+	public VATAmount setVatExemptionReasonCode(String taxExemptionReasonCode) {
+		this.vatExemptionReasonCode = taxExemptionReasonCode;
+		return this;
+	}
+
 	/**
 	 *
 	 * @deprecated Use {@link #getCategoryCode() instead}

library/src/main/java/org/mustangproject/ZUGFeRD/ZUGFeRD2PullProvider.java

@@ -832,13 +832,19 @@ public BigDecimal getQuantity() {
 						exemptionReasonTextXML = "<ram:ExemptionReason>" + XMLTools.encodeXML(amount.getVatExemptionReasonText()) + "</ram:ExemptionReason>";
 					}
 
+					String exemptionReasonCodeXML = "";
+					if (amount.getVatExemptionReasonCode() != null) {
+						exemptionReasonCodeXML = "<ram:ExemptionReasonCode>" + XMLTools.encodeXML(amount.getVatExemptionReasonCode()) + "</ram:ExemptionReasonCode>";
+					}
+
 					xml += "<ram:ApplicableTradeTax>"
 						+ "<ram:CalculatedAmount>" + currencyFormat(amount.getCalculated())
 						+ "</ram:CalculatedAmount>" //currencyID=\"EUR\"
 						+ "<ram:TypeCode>VAT</ram:TypeCode>"
 						+ exemptionReasonTextXML
 						+ "<ram:BasisAmount>" + currencyFormat(amount.getBasis()) + "</ram:BasisAmount>" // currencyID=\"EUR\"
 						+ "<ram:CategoryCode>" + amountCategoryCode + "</ram:CategoryCode>"
+						+ exemptionReasonCodeXML
 						+ (amountDueDateTypeCode != null ? "<ram:DueDateTypeCode>" + amountDueDateTypeCode + "</ram:DueDateTypeCode>" : "");
 					xml += "<ram:RateApplicablePercent>"
 						+ vatFormat(amount.getApplicablePercent()) + "</ram:RateApplicablePercent>";

library/src/test/java/org/mustangproject/ZUGFeRD/ZF2PushTest.java

@@ -187,6 +187,7 @@ public void testAttachmentsExport() {
 
 		assertEquals("EUR", zi.getInvoiceCurrencyCode());
 		assertTrue(zi.getUTF8().contains(taxID));
+		assertThat(zi.getUTF8()).valueByXPath("//*[local-name()=\"ApplicableHeaderTradeSettlement\"]/*[local-name()=\"ExemptionReasonCode\"]");
 
 		// Reading ZUGFeRD
 		assertEquals("1.00", zi.getAmount());