From 4154ef5bf6de5eb69bbb5d29f382bfb8df2ab773 Mon Sep 17 00:00:00 2001
From: Artur Signell <artur@vaadin.com>
Date: Wed, 30 Dec 2015 07:56:33 +0200
Subject: Make GeneratedPropertyItem equals self (#19426)

Change-Id: Ieccb53a402dd6669fb684b0ef8e18e4c8778c58e
---
 .../data/util/GeneratedPropertyContainer.java      | 33 ++++++++++++++++++++++
 1 file changed, 33 insertions(+)

(limited to 'server/src/com')

diff --git a/server/src/com/vaadin/data/util/GeneratedPropertyContainer.java b/server/src/com/vaadin/data/util/GeneratedPropertyContainer.java
index f50ff01fc6..cea1e27ee9 100644
--- a/server/src/com/vaadin/data/util/GeneratedPropertyContainer.java
+++ b/server/src/com/vaadin/data/util/GeneratedPropertyContainer.java
@@ -165,6 +165,39 @@ public class GeneratedPropertyContainer extends AbstractContainer implements
             throw new UnsupportedOperationException(
                     "GeneratedPropertyItem does not support removing properties");
         }
+
+        /**
+         * Tests if the given object is the same as the this object. Two Items
+         * from the same container with the same ID are equal.
+         * 
+         * @param obj
+         *            an object to compare with this object
+         * @return <code>true</code> if the given object is the same as this
+         *         object, <code>false</code> if not
+         */
+        @Override
+        public boolean equals(Object obj) {
+            if (this == obj) {
+                return true;
+            }
+
+            if (obj == null
+                    || !obj.getClass().equals(GeneratedPropertyItem.class)) {
+                return false;
+            }
+            final GeneratedPropertyItem li = (GeneratedPropertyItem) obj;
+            return getContainer() == li.getContainer()
+                    && itemId.equals(li.itemId);
+        }
+
+        @Override
+        public int hashCode() {
+            return itemId.hashCode();
+        }
+
+        private GeneratedPropertyContainer getContainer() {
+            return GeneratedPropertyContainer.this;
+        }
     };
 
     /**
-- 
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