Allow reaching the wrapped Item through GeneratedPropertyItem (#20032)

Change-Id: Ic38c2803b3d83e76fa74d21490a4277c6037b950

server/src/main/java/com/vaadin/data/util/GeneratedPropertyContainer.java

@@ -122,9 +122,11 @@ public class GeneratedPropertyContainer extends AbstractContainer implements
     }
 
     /**
-     * Item implementation for generated properties.
+     * Item implementation for generated properties, used to wrap the Item that
+     * belongs to the wrapped container. To reach that Item use
+     * {@link #getWrappedItem()}
      */
-    protected class GeneratedPropertyItem implements Item {
+    public class GeneratedPropertyItem implements Item {
 
         private Item wrappedItem;
         private Object itemId;
@@ -198,6 +200,16 @@ public class GeneratedPropertyContainer extends AbstractContainer implements
         private GeneratedPropertyContainer getContainer() {
             return GeneratedPropertyContainer.this;
         }
+
+        /**
+         * Returns the wrapped Item that belongs to the wrapped container
+         * 
+         * @return wrapped item.
+         * @since
+         */
+        public Item getWrappedItem() {
+            return wrappedItem;
+        }
     };
 
     /**

server/src/test/java/com/vaadin/data/util/GeneratedPropertyContainerTest.java

@@ -31,6 +31,7 @@ import com.vaadin.data.Container.PropertySetChangeEvent;
 import com.vaadin.data.Container.PropertySetChangeListener;
 import com.vaadin.data.Item;
 import com.vaadin.data.sort.SortOrder;
+import com.vaadin.data.util.GeneratedPropertyContainer.GeneratedPropertyItem;
 import com.vaadin.data.util.filter.Compare;
 import com.vaadin.data.util.filter.UnsupportedFilterException;
 
@@ -285,6 +286,15 @@ public class GeneratedPropertyContainerTest {
                 .getContainerPropertyIds().contains("foo"));
     }
 
+    @Test
+    public void testGetWrappedItem() {
+        Object itemId = wrappedContainer.getItemIds().iterator().next();
+        Item wrappedItem = wrappedContainer.getItem(itemId);
+        GeneratedPropertyItem generatedPropertyItem = (GeneratedPropertyItem) container
+                .getItem(itemId);
+        assertEquals(wrappedItem, generatedPropertyItem.getWrappedItem());
+    }
+
     private Indexed createContainer() {
         wrappedContainer = new IndexedContainer();
         wrappedContainer.addContainerProperty("foo", String.class, "foo");