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diff --git a/wicket/joe/src/main/java/org/wamblee/wicket/model/DetachableEntity.java b/wicket/joe/src/main/java/org/wamblee/wicket/model/DetachableEntity.java
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+/*
+ * Copyright 2005-2010 the original author or authors.
+ * 
+ * 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.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.wamblee.wicket.model;
+
+import org.apache.wicket.model.LoadableDetachableModel;
+import org.wamblee.persistence.Detachable;
+
+/**
+ * A detachable model that wraps a domain object. 
+ *
+ */
+public class DetachableEntity<T> extends LoadableDetachableModel<T> {
+       
+       private Detachable<T> object;
+       
+       /**
+        * Constructs the model. 
+        * @param aObject Object to construct the model with. 
+        */
+       public DetachableEntity(Detachable<T> aObject) { 
+        object = aObject;
+       }
+       
+       @Override
+       protected void onDetach() {
+           object.detach();
+       }
+       
+       @Override
+       protected T load() {
+           return object.get();
+       }
+       
+       @Override
+       public void setObject(T object) {
+           throw new UnsupportedOperationException("setObject is not supported on this class");
+       }
+
+}

diff --git a/wicket/joe/src/test/java/org/wamblee/wicket/model/DetachableEntityTest.java b/wicket/joe/src/test/java/org/wamblee/wicket/model/DetachableEntityTest.java
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+++ b/wicket/joe/src/test/java/org/wamblee/wicket/model/DetachableEntityTest.java
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+/*
+ * Copyright 2005-2010 the original author or authors.
+ * 
+ * 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.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.wamblee.wicket.model;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.wamblee.persistence.Detachable;
+
+import static org.mockito.Mockito.*;
+import static junit.framework.TestCase.*; 
+
+public class DetachableEntityTest {
+    
+    public static class X { 
+        
+    }
+    
+    private Detachable<X> detachable;
+    private DetachableEntity<X> entity; 
+    
+    @Before
+    public void setUp() { 
+        detachable = mock(Detachable.class);
+        entity = new DetachableEntity<X>(detachable);
+    }
+
+    @Test
+    public void testGetObject() {
+        X x = new X(); 
+        when(detachable.get()).thenReturn(x);
+        X value = entity.getObject();
+        assertSame(x, value);
+        verify(detachable).get();
+    }
+
+    @Test
+    public void testOnDetachReattach() {
+        X x = new X(); 
+        when(detachable.get()).thenReturn(x);
+        
+        entity.onDetach();
+        verify(detachable).detach();
+        
+        X y = entity.getObject();
+        assertSame(x, y); 
+        verify(detachable).get();
+    }
+
+    @Test(expected = UnsupportedOperationException.class)
+    public void testSetObject() {
+        X x = new X(); 
+        entity.setObject(x);
+    }
+}