1 files changed, 18 insertions, 23 deletions
diff --git a/ONAP-REST/src/main/java/org/onap/policy/rest/util/PolicyContainer.java b/ONAP-REST/src/main/java/org/onap/policy/rest/util/PolicyContainer.java
index 80bb16d54..42bee49b5 100644
--- a/ONAP-REST/src/main/java/org/onap/policy/rest/util/PolicyContainer.java
+++ b/ONAP-REST/src/main/java/org/onap/policy/rest/util/PolicyContainer.java
@@ -3,13 +3,14 @@
  * ONAP Policy Engine
  * ================================================================================
  * Copyright (C) 2017-2018 AT&T Intellectual Property. All rights reserved.
+ * Modifications Copyright (C) 2019 Nordix Foundation.
  * ================================================================================
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
- * 
+ *
  *      http://www.apache.org/licenses/LICENSE-2.0
- * 
+ *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
@@ -24,26 +25,24 @@ import java.io.Serializable;
 import java.util.Collection;
 import java.util.List;
 
-
-public interface PolicyContainer extends Serializable{
+public interface PolicyContainer extends Serializable {
 
     public Collection<?> getContainerPropertyIds();
-    
+
     public Collection<?> getItemIds();
 
     public Class<?> getType(Object propertyId);
 
     public int size();
-  
+
     public boolean containsId(Object itemId);
 
     public Object addItem();
-    
+
     public boolean removeItem(Object itemId);
 
-    public boolean addContainerProperty(Object propertyId, Class<?> type,
-            Object defaultValue);
-   
+    public boolean addContainerProperty(Object propertyId, Class<?> type, Object defaultValue);
+
     public boolean removeContainerProperty(Object propertyId);
 
     public boolean removeAllItems();
@@ -63,10 +62,9 @@ public interface PolicyContainer extends Serializable{
         public boolean isLastId(Object itemId);
 
         public Object addItemAfter(Object previousItemId);
-        
+
     }
 
-    
     public interface Indexed extends Ordered {
 
         public int indexOfId(Object itemId);
@@ -74,7 +72,7 @@ public interface PolicyContainer extends Serializable{
         public Object getIdByIndex(int index);
 
         public List<?> getItemIds(int startIndex, int numberOfItems);
-        
+
         public Object addItemAt(int index);
 
         public interface ItemAddEvent extends ItemSetChangeEvent {
@@ -86,9 +84,8 @@ public interface PolicyContainer extends Serializable{
             public int getAddedItemsCount();
         }
 
-     
         public interface ItemRemoveEvent extends ItemSetChangeEvent {
-          
+
             public Object getFirstItemId();
 
             public int getFirstIndex();
@@ -96,23 +93,21 @@ public interface PolicyContainer extends Serializable{
             public int getRemovedItemsCount();
         }
     }
-  
-    public interface ItemSetChangeEvent extends Serializable {
 
+    @FunctionalInterface
+    public interface ItemSetChangeEvent {
         public PolicyContainer getContainer();
     }
 
-    public interface ItemSetChangeListener extends Serializable {
-
+    @FunctionalInterface
+    public interface ItemSetChangeListener {
         public void containerItemSetChange(PolicyContainer.ItemSetChangeEvent event);
     }
 
     public interface ItemSetChangeNotifier extends Serializable {
 
-        public void addItemSetChangeListener(
-                PolicyContainer.ItemSetChangeListener listener);
+        public void addItemSetChangeListener(PolicyContainer.ItemSetChangeListener listener);
 
-        public void removeItemSetChangeListener(
-                PolicyContainer.ItemSetChangeListener listener);
+        public void removeItemSetChangeListener(PolicyContainer.ItemSetChangeListener listener);
     }
 }