Checkpoint: return all exchanges works

Signed-off-by: Marcin Woźniak <y0rune@aol.com>

buisnesslogic/src/main/java/com/plannaplan/entities/Exchange.java

@@ -8,7 +8,7 @@ import javax.persistence.JoinColumn;
 import javax.persistence.OneToOne;
 
 /**
- *  Entity that keeps user exchange offer. 
+ * Entity that keeps user exchange offer.
  */
 @Entity
 public class Exchange {
@@ -20,29 +20,49 @@ public class Exchange {
     @OneToOne
     @JoinColumn(name = "owned_id", unique = true)
     private Assignment ownedAssignment;
-   
+
     @OneToOne
     @JoinColumn(name = "desired_id")
     private Groups desiredAssignment;
-    
-    public Exchange() {
 
+    private Long ownerId;
+
+    public Exchange(){
+        
     }
 
-    public Exchange(Assignment ownedAssignment, Groups desiredAssignment){
+    /** 
+     * @return Long ID of exchange trader
+     */
+    public Long getOwnerId() {
+        return ownerId;
+    }
+   
+    /** 
+     * @param ownerId ID of exchange trader
+     */
+    public void setOwnerId(Long ownerId) {
+        this.ownerId = ownerId;
+    }
+
+    /**
+     * 
+     * @param ownedAssignment  Assignment which owner would like to trade
+     * @param desiredAssignment Groups instance that trader wants
+     */
+    public Exchange(Assignment ownedAssignment, Groups desiredAssignment) {
         this.ownedAssignment = ownedAssignment;
         this.desiredAssignment = desiredAssignment;
+        this.ownerId = this.ownedAssignment.getCommision().getCommisionOwner().getId();
     }
 
-    
     /** 
      * @return Long ID in database
      */
     public Long getId(){
         return this.id;
     }
-
-    
+  
     /** 
      * @return Groups Target group
      */
@@ -50,7 +70,6 @@ public class Exchange {
         return desiredAssignment;
     }
 
-    
     /** 
      * @param desiredAssignment Target group
      */
@@ -58,7 +77,6 @@ public class Exchange {
         this.desiredAssignment = desiredAssignment;
     }
 
-    
     /** 
      * @return Assignment Owned assignment
      */
@@ -66,7 +84,6 @@ public class Exchange {
         return ownedAssignment;
     }
 
-    
     /** 
      * @param ownedAssignment Owned assignment
      */