diff --git a/Core/src/org/sleuthkit/autopsy/mainui/datamodel/AbstractDao.java b/Core/src/org/sleuthkit/autopsy/mainui/datamodel/AbstractDao.java
index cc12d700df..c12733d9c0 100644
--- a/Core/src/org/sleuthkit/autopsy/mainui/datamodel/AbstractDao.java
+++ b/Core/src/org/sleuthkit/autopsy/mainui/datamodel/AbstractDao.java
@@ -29,7 +29,7 @@ import java.util.List;
 abstract class AbstractDAO {
 
     /**
-     * Clear any cached data (Due to change in view
+     * Clear any cached data (Due to change in view).
      */
     abstract void clearCaches();
 
diff --git a/Core/src/org/sleuthkit/autopsy/mainui/datamodel/events/BlackboardArtifactEvent.java b/Core/src/org/sleuthkit/autopsy/mainui/datamodel/events/BlackboardArtifactEvent.java
index 02fb5229c4..07231ce318 100644
--- a/Core/src/org/sleuthkit/autopsy/mainui/datamodel/events/BlackboardArtifactEvent.java
+++ b/Core/src/org/sleuthkit/autopsy/mainui/datamodel/events/BlackboardArtifactEvent.java
@@ -67,5 +67,8 @@ public class BlackboardArtifactEvent implements DAOEvent {
         return true;
     }
 
-    
+    @Override
+    public Type getType() {
+        return Type.RESULT;
+    }
 }
diff --git a/Core/src/org/sleuthkit/autopsy/mainui/datamodel/events/DAOEvent.java b/Core/src/org/sleuthkit/autopsy/mainui/datamodel/events/DAOEvent.java
index e2886275b6..c4a1c3a3ca 100644
--- a/Core/src/org/sleuthkit/autopsy/mainui/datamodel/events/DAOEvent.java
+++ b/Core/src/org/sleuthkit/autopsy/mainui/datamodel/events/DAOEvent.java
@@ -22,5 +22,7 @@ package org.sleuthkit.autopsy.mainui.datamodel.events;
  * An event emitted by the DAO.
  */
 public interface DAOEvent {
+    public enum Type { TREE, RESULT }
     
+    DAOEvent.Type getType();
 }