From 51cc217ee697147805ea23dd777511b82efe94ce Mon Sep 17 00:00:00 2001
From: Erik Brakkee <erik@brakkee.org>
Date: Thu, 22 Jul 2010 09:31:58 +0000
Subject: [PATCH]

---
 .../wicket/model/DetachableEntity.java        | 52 ++++++++++++++
 .../wicket/model/DetachableEntityTest.java    | 67 +++++++++++++++++++
 2 files changed, 119 insertions(+)
 create mode 100644 wicket/joe/src/main/java/org/wamblee/wicket/model/DetachableEntity.java
 create mode 100644 wicket/joe/src/test/java/org/wamblee/wicket/model/DetachableEntityTest.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
new file mode 100644
index 00000000..d94994bb
--- /dev/null
+++ b/wicket/joe/src/main/java/org/wamblee/wicket/model/DetachableEntity.java
@@ -0,0 +1,52 @@
+/*
+ * 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
new file mode 100644
index 00000000..e4cf7317
--- /dev/null
+++ b/wicket/joe/src/test/java/org/wamblee/wicket/model/DetachableEntityTest.java
@@ -0,0 +1,67 @@
+/*
+ * 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);
+    }
+}
-- 
2.31.1