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[utils] / wicket / joe / src / main / java / org / wamblee / wicket / model / DetachableEntity.java

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");
+       }
+
+}