=== modified file 'dhis-2/dhis-api/src/main/java/org/hisp/dhis/common/IdentifiableObjectUtils.java'
--- dhis-2/dhis-api/src/main/java/org/hisp/dhis/common/IdentifiableObjectUtils.java	2015-10-08 13:50:01 +0000
+++ dhis-2/dhis-api/src/main/java/org/hisp/dhis/common/IdentifiableObjectUtils.java	2015-10-08 14:59:36 +0000
@@ -38,6 +38,7 @@
 import java.util.List;
 import java.util.ListIterator;
 import java.util.Map;
+import java.util.stream.Collectors;
 
 import org.apache.commons.lang3.StringUtils;
 import org.hisp.dhis.calendar.Calendar;
@@ -100,17 +101,18 @@
      */
     public static <T extends IdentifiableObject> List<String> getUids( Collection<T> objects )
     {
-        List<String> uids = new ArrayList<>();
-
-        if ( objects != null )
-        {
-            for ( T object : objects )
-            {
-                uids.add( object.getUid() );
-            }
-        }
-
-        return uids;
+        return objects != null ? objects.stream().map( o -> o.getUid() ).collect( Collectors.toList() ) : null;
+    }
+
+    /**
+     * Returns a list of internal identifiers for the given collection of IdentifiableObjects.
+     *
+     * @param objects the list of IdentifiableObjects.
+     * @return a list of uids.
+     */
+    public static <T extends IdentifiableObject> List<Integer> getIdentifiers( Collection<T> objects )
+    {
+        return objects != null ? objects.stream().map( o -> o.getId() ).collect( Collectors.toList() ) : null;
     }
 
     /**
@@ -166,27 +168,6 @@
     }
 
     /**
-     * Returns a list of internal identifiers for the given collection of IdentifiableObjects.
-     *
-     * @param objects the list of IdentifiableObjects.
-     * @return a list of uids.
-     */
-    public static <T extends IdentifiableObject> List<Integer> getIdentifiers( Collection<T> objects )
-    {
-        List<Integer> uids = new ArrayList<>();
-
-        if ( objects != null )
-        {
-            for ( T object : objects )
-            {
-                uids.add( object.getId() );
-            }
-        }
-
-        return uids;
-    }
-
-    /**
      * Filters the given list of IdentifiableObjects based on the given key.
      *
      * @param identifiableObjects the list of IdentifiableObjects.
@@ -332,30 +313,6 @@
     }
 
     /**
-     * Returns a list of database identifiers from a list of idObjects
-     *
-     * @param identifiableObjects Collection of idObjects
-     * @return List of database identifiers for idObjects
-     */
-    public static List<Integer> getIdList( Collection<? extends IdentifiableObject> identifiableObjects )
-    {
-        List<Integer> integers = new ArrayList<>();
-
-        if ( identifiableObjects != null )
-        {
-            for ( IdentifiableObject identifiableObject : identifiableObjects )
-            {
-                if ( identifiableObject != null )
-                {
-                    integers.add( identifiableObject.getId() );
-                }
-            }
-        }
-
-        return integers;
-    }
-
-    /**
      * Returns a mapping between the uid and the name of the given identifiable
      * objects.
      *

=== modified file 'dhis-2/dhis-services/dhis-service-dxf2/src/main/java/org/hisp/dhis/dxf2/events/event/JdbcEventStore.java'
--- dhis-2/dhis-services/dhis-service-dxf2/src/main/java/org/hisp/dhis/dxf2/events/event/JdbcEventStore.java	2015-10-01 10:05:20 +0000
+++ dhis-2/dhis-services/dhis-service-dxf2/src/main/java/org/hisp/dhis/dxf2/events/event/JdbcEventStore.java	2015-10-08 14:59:36 +0000
@@ -54,7 +54,7 @@
 import java.util.List;
 import java.util.Set;
 
-import static org.hisp.dhis.common.IdentifiableObjectUtils.getIdList;
+import static org.hisp.dhis.common.IdentifiableObjectUtils.getIdentifiers;
 import static org.hisp.dhis.commons.util.TextUtils.getCommaDelimitedString;
 import static org.hisp.dhis.system.util.DateUtils.getMediumDateString;
 
@@ -331,7 +331,7 @@
 
     private String getEventSelectQuery( EventSearchParams params, List<OrganisationUnit> organisationUnits )
     {
-        List<Integer> orgUnitIds = getIdList( organisationUnits );
+        List<Integer> orgUnitIds = getIdentifiers( organisationUnits );
 
         SqlHelper hlp = new SqlHelper();