Move methods up to abstract class and clean up

neo4j · May 27, 2018 · cf738ac · cf738ac
1 parent 052dfcb
commit cf738ac
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Showing 3 changed files with 332 additions and 378 deletions.
diff --git a/community/collections/src/main/java/org/neo4j/helpers/collection/Iterators.java b/community/collections/src/main/java/org/neo4j/helpers/collection/Iterators.java
@@ -588,6 +588,37 @@ public static <T> Iterator<T> iterator( int maxItems, T ... items )
         return asIterator( maxItems, items );
     }
 
+    public static <T> Iterator<T> appendTo( Iterator<T> iterator, T... appended )
+    {
+        return new Iterator<T>()
+        {
+            private int index;
+
+            @Override
+            public boolean hasNext()
+            {
+                return iterator.hasNext() || index < appended.length;
+            }
+
+            @Override
+            public T next()
+            {
+                if ( iterator.hasNext() )
+                {
+                    return iterator.next();
+                }
+                else if ( index < appended.length )
+                {
+                    return appended[index++];
+                }
+                else
+                {
+                    throw new NoSuchElementException();
+                }
+            }
+        };
+    }
+
     @SuppressWarnings( "unchecked" )
     public static <T> ResourceIterator<T> emptyResourceIterator()
     {