svn commit: r1525266 - in /commons/proper/proxy/branches/version-2.0-work/core/src: main/java/org/apache/commons/proxy2/invoker/DelegatingInvoker.java test/java/org/apache/commons/proxy2/invoker/DelegatingInvokerTest.java

[mb...@apache.org]

Author: mbenson
Date: Sat Sep 21 17:34:16 2013
New Revision: 1525266

URL: http://svn.apache.org/r1525266
Log:
add delegating invoker

Added:
    commons/proper/proxy/branches/version-2.0-work/core/src/main/java/org/apache/commons/proxy2/invoker/DelegatingInvoker.java
    commons/proper/proxy/branches/version-2.0-work/core/src/test/java/org/apache/commons/proxy2/invoker/DelegatingInvokerTest.java

Added: commons/proper/proxy/branches/version-2.0-work/core/src/main/java/org/apache/commons/proxy2/invoker/DelegatingInvoker.java
URL: http://svn.apache.org/viewvc/commons/proper/proxy/branches/version-2.0-work/core/src/main/java/org/apache/commons/proxy2/invoker/DelegatingInvoker.java?rev=1525266&view=auto
==============================================================================
--- commons/proper/proxy/branches/version-2.0-work/core/src/main/java/org/apache/commons/proxy2/invoker/DelegatingInvoker.java (added)
+++ commons/proper/proxy/branches/version-2.0-work/core/src/main/java/org/apache/commons/proxy2/invoker/DelegatingInvoker.java Sat Sep 21 17:34:16 2013
@@ -0,0 +1,58 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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.apache.commons.proxy2.invoker;
+
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+
+import org.apache.commons.lang3.Validate;
+import org.apache.commons.proxy2.Invoker;
+import org.apache.commons.proxy2.ObjectProvider;
+
+/**
+ * Delegates a method invocation to the object provided by an
+ * {@link ObjectProvider}.
+ * 
+ * @param <T>
+ */
+public class DelegatingInvoker<T> implements Invoker
+{
+    private static final long serialVersionUID = 1L;
+
+    private final ObjectProvider<? extends T> delegateProvider;
+
+    public DelegatingInvoker(ObjectProvider<? extends T> delegateProvider)
+    {
+        super();
+        this.delegateProvider = Validate.notNull(delegateProvider);
+    }
+
+    @Override
+    public Object invoke(Object proxy, Method method, Object[] arguments) throws Throwable
+    {
+        try
+        {
+            return method.invoke(delegateProvider.getObject(), arguments);
+        }
+        catch (InvocationTargetException e)
+        {
+            throw e.getTargetException();
+        }
+    }
+
+}

Added: commons/proper/proxy/branches/version-2.0-work/core/src/test/java/org/apache/commons/proxy2/invoker/DelegatingInvokerTest.java
URL: http://svn.apache.org/viewvc/commons/proper/proxy/branches/version-2.0-work/core/src/test/java/org/apache/commons/proxy2/invoker/DelegatingInvokerTest.java?rev=1525266&view=auto
==============================================================================
--- commons/proper/proxy/branches/version-2.0-work/core/src/test/java/org/apache/commons/proxy2/invoker/DelegatingInvokerTest.java (added)
+++ commons/proper/proxy/branches/version-2.0-work/core/src/test/java/org/apache/commons/proxy2/invoker/DelegatingInvokerTest.java Sat Sep 21 17:34:16 2013
@@ -0,0 +1,40 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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.apache.commons.proxy2.invoker;
+
+import static org.junit.Assert.assertEquals;
+
+import org.apache.commons.proxy2.Invoker;
+import org.apache.commons.proxy2.provider.ObjectProviderUtils;
+import org.apache.commons.proxy2.util.Echo;
+import org.apache.commons.proxy2.util.EchoImpl;
+import org.junit.Test;
+
+public class DelegatingInvokerTest
+{
+
+    @Test
+    public void test() throws Throwable
+    {
+        final Invoker invoker = new DelegatingInvoker<Echo>(ObjectProviderUtils.constant(new EchoImpl()));
+
+        assertEquals("foo",
+                invoker.invoke(null, Echo.class.getDeclaredMethod("echoBack", String.class), new Object[] { "foo" }));
+    }
+
+}