Changeset 574 for trunk

Timestamp:

06/02/10 03:21:37 (3 months ago)

Author:

soergel

Message:

 

Files:

• trunk/src/main/java/com/davidsoergel/dsutils/collections/Dereplicator.java (modified) (2 diffs)

trunk/src/main/java/com/davidsoergel/dsutils/collections/Dereplicator.java

@@ -5 +5 @@
 
 /**
- * Save memory by storing only one object for each set of equal() objects.  This is sensible only if the objects are immutable and equals() is legitimate.
+ * Save memory by storing only one object for each set of equal() objects.  This is sensible only if the objects are
+ * immutable and equals() is legitimate.
  *
  * @author <a href="mailto:dev@davidsoergel.com">David Soergel</a>
@@ -12 +13 @@
 public class Dereplicator<T>
         {
-        private Map<T,T> objects = new HashMap<T,T>();
+        private Map<T, T> objects = new HashMap<T, T>();
 
         public T derep(T o)
                 {
+                if (o == null)
+                        {
+                        return null;
+                        }
                 T result = objects.get(o);
-                if(result == null)
+                if (result == null)
                         {
-                        objects.put(o,o);
+                        objects.put(o, o);
                         result = o;
                         }