Replace Double class of price fields with BigDecimal

src/main/java/de/dpunkt/myaktion/model/Campaign.java

@@ -5,6 +5,7 @@
 
 package de.dpunkt.myaktion.model;
 
+import java.math.BigDecimal;
 import java.util.List;
 
 import javax.persistence.AttributeOverride;
@@ -19,6 +20,8 @@ import javax.persistence.NamedQueries;
 import javax.persistence.NamedQuery;
 import javax.persistence.OneToMany;
 import javax.persistence.Transient;
+import javax.validation.constraints.DecimalMin;
+import javax.validation.constraints.Digits;
 import javax.validation.constraints.NotNull;
 import javax.validation.constraints.Size;
 
@@ -26,7 +29,8 @@ import javax.validation.constraints.Size;
  * @author Julian
  */
 @NamedQueries({
-        @NamedQuery(name = Campaign.findAll, query = "SELECT c FROM Campaign c ORDER BY c.name"),
+        @NamedQuery(name = Campaign.findAll, 
+                query = "SELECT c FROM Campaign c ORDER BY c.name"),
         @NamedQuery(name = Campaign.getAmountDonatedSoFar,
                 query = "SELECT SUM(d.amount) FROM Donation d WHERE d.campaign = :campaign") })
 @Entity
@@ -48,15 +52,15 @@ public class Campaign {
     private String name;
 
     @NotNull(message = "{campaign.targetAmount.notNull}")
-    //@DecimalMin(value = "10.00", message = "{campaign.targetAmount.decimalMin}")
-    private Double targetAmount;
+    @DecimalMin(value = "10.00", message = "{campaign.targetAmount.decimalMin}")
+    private BigDecimal targetAmount;
 
     @NotNull(message = "{campaign.donationMinimum.notNull}")
-    //@DecimalMin(value = "1.00", message = "{campaign.donationMinimum.decimalMin}")
-    private Double donationMinimum;
+    @DecimalMin(value = "1.00", message = "{campaign.donationMinimum.decimalMin}")
+    private BigDecimal donationMinimum;
 
     @Transient
-    private Double amountDonatedSoFar;
+    private BigDecimal amountDonatedSoFar;
 
     @Embedded
     @AttributeOverrides({
@@ -82,27 +86,27 @@ public class Campaign {
         this.name = name;
     }
 
-    public Double getTargetAmount() {
+    public BigDecimal getTargetAmount() {
         return targetAmount;
     }
 
-    public void setTargetAmount(Double targetAmount) {
+    public void setTargetAmount(BigDecimal targetAmount) {
         this.targetAmount = targetAmount;
     }
 
-    public Double getDonationMinimum() {
+    public BigDecimal getDonationMinimum() {
         return donationMinimum;
     }
 
-    public void setDonationMinimum(Double donationMinimum) {
+    public void setDonationMinimum(BigDecimal donationMinimum) {
         this.donationMinimum = donationMinimum;
     }
 
-    public Double getAmountDonatedSoFar() {
+    public BigDecimal getAmountDonatedSoFar() {
         return amountDonatedSoFar;
     }
 
-    public void setAmountDonatedSoFar(Double amountDonatedSoFar) {
+    public void setAmountDonatedSoFar(BigDecimal amountDonatedSoFar) {
         this.amountDonatedSoFar = amountDonatedSoFar;
     }
 

src/main/java/de/dpunkt/myaktion/model/Donation.java

@@ -5,6 +5,8 @@
 
 package de.dpunkt.myaktion.model;
 
+import java.math.BigDecimal;
+
 import javax.persistence.Embedded;
 import javax.persistence.Entity;
 import javax.persistence.GeneratedValue;
@@ -26,8 +28,8 @@ public class Donation {
     private Long id;
 
     @NotNull(message = "{donation.amount.notNull}")
-    //@DecimalMin(value = "1.00", message = "{donation.amount.decimalMin}")
-    private Double amount;
+    @DecimalMin(value = "1.00", message = "{donation.amount.decimalMin}")
+    private BigDecimal amount;
   
     @NotNull
     @Size(min = 5, max = 40, message = "{donation.donorName.size}")
@@ -69,11 +71,11 @@ public class Donation {
         this.id = id;
     }
 
-    public Double getAmount() {
+    public BigDecimal getAmount() {
         return amount;
     }
 
-    public void setAmount(Double amount) {
+    public void setAmount(BigDecimal amount) {
         this.amount = amount;
     }
 

src/main/java/de/dpunkt/myaktion/services/CampaignServiceBean.java

@@ -5,6 +5,7 @@
 
 package de.dpunkt.myaktion.services;
 
+import java.math.BigDecimal;
 import java.util.List;
 import java.util.logging.Level;
 import java.util.logging.Logger;
@@ -71,14 +72,14 @@ public class CampaignServiceBean implements CampaignService {
 
     //----------------------------------------------------------------------------------------------
 
-    private Double getAmountDonatedSoFar(Campaign campaign) {
-        TypedQuery<Double> query =
-                entityManager.createNamedQuery(Campaign.getAmountDonatedSoFar, Double.class);
+    private BigDecimal getAmountDonatedSoFar(Campaign campaign) {
+        TypedQuery<BigDecimal> query =
+                entityManager.createNamedQuery(Campaign.getAmountDonatedSoFar, BigDecimal.class);
         query.setParameter("campaign", campaign);
 
-        Double result = query.getSingleResult();
+        BigDecimal result = query.getSingleResult();
         if (result == null)
-            result = 0d;
+            result = BigDecimal.ZERO;
 
         return result;
     }