Added comments to database classes

code/LanBortalDatabase/src/fi/insomnia/bortal/model/Bill.java

@@ -4,6 +4,7 @@
  */
 package fi.insomnia.bortal.model;
 
+import java.math.BigDecimal;
 import java.util.Calendar;
 import java.util.List;
 
@@ -24,8 +25,9 @@ import javax.persistence.TemporalType;
 import javax.persistence.Version;
 
 /**
- * 
- * 
+ * The system can send bills to the users. 
+ * When user pays bill a AccountEvent row is created for product whose price is +1
+ * and Bills paidDate is changed to not null.
  */
 @Entity
 @Table(name = "bills")
@@ -40,40 +42,94 @@ public class Bill implements EventChildInterface {
     private static final long serialVersionUID = 1L;
 
     @EmbeddedId
-    private EventPk id;;
+    private EventPk id;
 
+    /**
+     * When the bill is due to be paid.
+     */
     @Column(name = "due_date")
     @Temporal(TemporalType.TIMESTAMP)
     private Calendar dueDate;
 
+    /**
+     * When the money has appeared on the bank account.
+     */
     @Column(name = "paid_date")
     @Temporal(TemporalType.TIMESTAMP)
     private Calendar paidDate;
 
+    /**
+     * Reference number of the bill. 
+     * @See http://www.fkl.fi/www/page/fk_www_1293
+     */
     @Column(name = "reference_number")
     private String referenceNumber;
     
+    /** 
+     * Notes for the event organisators about the bill.
+     */
     @Lob
     @Column(name = "notes")
     private String notes;
 
+    /**
+     * Bill may have multiple items on multiple rows.
+     */
     @OneToMany(mappedBy = "bill")
     private List<BillLine> billLines;
 
+    /**
+     * When the bill is paid this AccountEvent is created and this is a reference
+     * to that accountAction.
+     */
     @JoinColumns({
-            @JoinColumn(name = "account_event_id", referencedColumnName = "entity_id", nullable = false, updatable = false, insertable = false),
-            @JoinColumn(name = "account_event_event_id", referencedColumnName = "events_pk_id", nullable = false, updatable = false, insertable = false) })
+            @JoinColumn(name = "account_event_id", referencedColumnName = "entity_id", updatable = false, insertable = false),
+            @JoinColumn(name = "account_event_event_id", referencedColumnName = "events_pk_id", updatable = false, insertable = false) })
     @OneToOne
     private AccountEvent accountEvent;
 
+    /**
+     * User who should pay this bill.
+     */
     @JoinColumn(name = "users_id", referencedColumnName = "users_id", nullable = false)
     @ManyToOne(optional = false)
     private User user;
 
+    /**
+     * Which event the bill is assigned to.
+     */
     @ManyToOne
     @JoinColumn(name = "events_id", referencedColumnName = "events_id")
     private Event event;
 
+    /**
+     * Commodity function to calculate the total price of the bill.
+     * @return The total sum of the bill ( unitPrice * units * vat ) 
+     */
+    public BigDecimal totalPrice()
+    {
+        BigDecimal total = BigDecimal.ZERO;
+        for(BillLine  line: getBillLines())
+        {
+            total  = total.add(line.getLinePrice());
+        }
+        return total;
+    }
+    
+    /**
+     * Commodity function to return the vatless price of the bill
+     * @return The total VAT-less sum of the bill ( unitPrice * units )
+     */
+    public BigDecimal totalPriceVatless()
+    {
+        BigDecimal total = BigDecimal.ZERO;
+        for(BillLine  line: getBillLines())
+        {
+            total  = total.add(line.getLinePriceVatless());
+        }
+        return total;
+    }
+    
     @Override
     public EventPk getId() {
         return id;

code/LanBortalDatabase/src/fi/insomnia/bortal/model/BillLine.java

@@ -23,35 +23,50 @@ import javax.persistence.Version;
  */
 @Entity
 @Table(name = "bill_lines")
-@NamedQueries( {
+@NamedQueries({
         @NamedQuery(name = "BillLine.findAll", query = "SELECT b FROM BillLine b"),
         @NamedQuery(name = "BillLine.findByProduct", query = "SELECT b FROM BillLine b WHERE b.name = :name"),
         @NamedQuery(name = "BillLine.findByUnits", query = "SELECT b FROM BillLine b WHERE b.units = :units"),
         @NamedQuery(name = "BillLine.findByUnitPrice", query = "SELECT b FROM BillLine b WHERE b.unitPrice = :unitPrice"),
         @NamedQuery(name = "BillLine.findByVat", query = "SELECT b FROM BillLine b WHERE b.vat = :vat") })
-public class BillLine implements EventChildInterface{
+public class BillLine implements EventChildInterface {
     private static final long serialVersionUID = 1L;
     private static final BigDecimal DEFAULT_VAT = BigDecimal.ZERO;
     @EmbeddedId
     private EventPk id;
 
+    /**
+     * Product name shown on the bill
+     */
     @Column(name = "name", nullable = false)
     private String name;
 
+    /**
+     * How many units the of the product has been purchased eg. 14 (Entrance
+     * tickets), 1.5 (l) eh.. something..
+     */
     @Column(name = "units", nullable = false, precision = 24, scale = 4)
-    private BigDecimal units;
+    private BigDecimal units = BigDecimal.ZERO;
 
+    /**
+     * How much one(1) unit of this product costs
+     * 
+     */
     @Column(name = "unit_price", nullable = false, precision = 24, scale = 4)
-    private BigDecimal unitPrice;
+    private BigDecimal unitPrice =  BigDecimal.ZERO;
 
+    /**
+     * How much VAT this product contains ( 0, 0.22 ) etc
+     */
     @Column(name = "vat", nullable = false, precision = 3, scale = 2)
     private BigDecimal vat = DEFAULT_VAT;
 
+    /**
+     * Which bill this bill line belongs to
+     */
     @JoinColumns({
             @JoinColumn(name = "bills_id", referencedColumnName = "entity_id", nullable = false, updatable = false, insertable = false),
-        @JoinColumn(name="bills_event_id",referencedColumnName = "events_pk_id", nullable = false, updatable = false, insertable = false)
-        
-    })
+            @JoinColumn(name = "bills_event_id", referencedColumnName = "events_pk_id", nullable = false, updatable = false, insertable = false) })
     @ManyToOne
     private Bill bill;
 
@@ -59,6 +74,25 @@ public class BillLine implements EventChildInterface{
     @Column(nullable = false)
     private int jpaVersionField;
 
+    /**
+     * Calculate the total price for the items on this line
+     * @return
+     */
+    public BigDecimal getLinePrice()
+    {
+        BigDecimal vatMultiplicand = BigDecimal.ONE.add(getVat());
+        return getLinePriceVatless().multiply(vatMultiplicand);
+    }
+    
+    /**
+     * Calculate the total VAT-less price  for the items on this lin
+     * @return
+     */
+    public BigDecimal getLinePriceVatless()
+    {
+       return getUnitPrice().multiply(getUnits());
+    }
+    
     public BillLine() {
     }
 
@@ -75,6 +109,8 @@ public class BillLine implements EventChildInterface{
         this.setVat(vat);
     }
 
+    
+    
     public String getName() {
         return name;
     }

code/LanBortalDatabase/src/fi/insomnia/bortal/model/CardTemplate.java

@@ -20,13 +20,12 @@ import javax.persistence.Table;
 import javax.persistence.Version;
 
 /**
- * 
+ * ID-card templates for the event.
  */
 @Entity
 @Table(name = "card_templates")
 @NamedQueries( {
         @NamedQuery(name = "CardTemplate.findAll", query = "SELECT c FROM CardTemplate c"),
-
         @NamedQuery(name = "CardTemplate.findByName", query = "SELECT c FROM CardTemplate c WHERE c.name = :name") })
 public class CardTemplate implements EventChildInterface{
     private static final long serialVersionUID = 1L;