CCM NG/ccm-cms: AttachmentList and ItemAttachment now implement the Comparable interface

git-svn-id: https://svn.libreccm.org/ccm/ccm_ng@4391 8810af33-2d31-482b-a856-94f89814c4df

ccm-cms/src/main/java/org/librecms/attachments/AttachmentList.java

@@ -55,7 +55,9 @@ import static org.librecms.CmsConstants.*;
 @Entity
 @Table(name = "ATTACHMENT_LISTS", schema = DB_SCHEMA)
 @Audited
-public class AttachmentList implements Identifiable, Serializable {
+public class AttachmentList implements Comparable<AttachmentList>,
+                                       Identifiable,
+                                       Serializable {
 
     private static final long serialVersionUID = -7931234562247075541L;
 
@@ -201,6 +203,20 @@ public class AttachmentList implements Identifiable, Serializable {
         attachments.remove(attachment);
     }
 
+    @Override
+    public int compareTo(final AttachmentList other) {
+        if (other == null) {
+            throw new NullPointerException();
+        }
+
+        final int nameCompare = name.compareTo(other.getName());
+        if (nameCompare == 0) {
+            return Long.compare(order, other.getOrder());
+        } else {
+            return nameCompare;
+        }
+    }
+
     @Override
     public int hashCode() {
         int hash = 3;

ccm-cms/src/main/java/org/librecms/attachments/ItemAttachment.java

@@ -46,8 +46,10 @@ import static org.librecms.CmsConstants.*;
 @Entity
 @Table(schema = DB_SCHEMA, name = "ATTACHMENTS")
 @Audited
-public class ItemAttachment<T extends Asset> implements Identifiable,
+public class ItemAttachment<T extends Asset>
-                                                        Serializable {
+    implements Comparable<ItemAttachment<?>>,
+               Identifiable,
+               Serializable {
 
     private static final long serialVersionUID = -9005379413315191984L;
 
@@ -127,6 +129,15 @@ public class ItemAttachment<T extends Asset> implements Identifiable,
         this.sortKey = sortKey;
     }
 
+    @Override
+    public int compareTo(final ItemAttachment<?> other) {
+        if (other == null) {
+            throw new NullPointerException();
+        }
+        
+        return Long.compare(sortKey, other.getSortKey());
+    }
+    
     @Override
     public int hashCode() {
         int hash = 3;