diff --git a/invoice/src/main/java/com/ning/billing/invoice/dao/InvoiceModelDao.java b/invoice/src/main/java/com/ning/billing/invoice/dao/InvoiceModelDao.java
index 569959e..373f4f2 100644
--- a/invoice/src/main/java/com/ning/billing/invoice/dao/InvoiceModelDao.java
+++ b/invoice/src/main/java/com/ning/billing/invoice/dao/InvoiceModelDao.java
@@ -16,6 +16,7 @@
package com.ning.billing.invoice.dao;
+import java.util.LinkedList;
import java.util.List;
import java.util.UUID;
@@ -40,8 +41,8 @@ public class InvoiceModelDao extends EntityBase implements EntityModelDao<Invoic
private boolean migrated;
// Note in the database, for convenience only
- private List<InvoiceItemModelDao> invoiceItems;
- private List<InvoicePaymentModelDao> invoicePayments;
+ private List<InvoiceItemModelDao> invoiceItems = new LinkedList<InvoiceItemModelDao>();
+ private List<InvoicePaymentModelDao> invoicePayments = new LinkedList<InvoicePaymentModelDao>();
private Currency processedCurrency;
public InvoiceModelDao() { /* For the DAO mapper */ }
@@ -72,7 +73,7 @@ public class InvoiceModelDao extends EntityBase implements EntityModelDao<Invoic
}
public void addInvoiceItems(final List<InvoiceItemModelDao> invoiceItems) {
- this.invoiceItems = invoiceItems;
+ this.invoiceItems.addAll(invoiceItems);
}
public List<InvoiceItemModelDao> getInvoiceItems() {
@@ -80,7 +81,7 @@ public class InvoiceModelDao extends EntityBase implements EntityModelDao<Invoic
}
public void addPayments(final List<InvoicePaymentModelDao> invoicePayments) {
- this.invoicePayments = invoicePayments;
+ this.invoicePayments.addAll(invoicePayments);
}
public List<InvoicePaymentModelDao> getInvoicePayments() {
