Index: lams_tool_lamc/src/java/org/lamsfoundation/lams/tool/mc/McUploadedFile.java
===================================================================
diff -u -r25a3cd766f44f20c25042ad630f87b5b79a53671 -r235c4ce5577dbe569ef93fbcc5205c761e3158b0
--- lams_tool_lamc/src/java/org/lamsfoundation/lams/tool/mc/McUploadedFile.java	(.../McUploadedFile.java)	(revision 25a3cd766f44f20c25042ad630f87b5b79a53671)
+++ lams_tool_lamc/src/java/org/lamsfoundation/lams/tool/mc/McUploadedFile.java	(.../McUploadedFile.java)	(revision 235c4ce5577dbe569ef93fbcc5205c761e3158b0)
@@ -32,7 +32,7 @@
  * 
  * @author Ozgur Demirtas
  */
-public class McUploadedFile implements Serializable
+public class McUploadedFile implements Serializable, Comparable
 {
 	/** identifier field */
     private Long uid;
@@ -83,14 +83,26 @@
 			boolean fileOnline, 
 			String filename,
 			Long mcContentId)  
-		{
+    {
 		this.uuid = uuid;
 		this.fileOnline = fileOnline;
 		this.filename = filename;
 		this.mcContentId=mcContentId;
-}
+    }
     
     
+    public static McUploadedFile newInstance(McUploadedFile mcUploadedFile,
+			McContent newMcContent)
+			
+	{
+    	McUploadedFile newMcUploadedFile = new McUploadedFile(mcUploadedFile.getUuid(),
+									mcUploadedFile.isFileOnline(),
+									mcUploadedFile.getFilename(),
+									newMcContent);
+		return newMcUploadedFile;
+	}
+    
+    
     public String toString() {
         return new ToStringBuilder(this)
             .append("uuid: ", getUuid())
@@ -182,4 +194,14 @@
 	public void setFilename(String filename) {
 		this.filename = filename;
 	}
+	
+	public int compareTo(Object o)
+    {
+		McUploadedFile optContent = (McUploadedFile) o;
+        //if the object does not exist yet, then just return any one of 0, -1, 1. Should not make a difference.
+        if (uid == null)
+        	return 1;
+		else
+			return (int) (uid.longValue() - optContent.uid.longValue());
+    }
 }