1 files changed, 70 insertions, 0 deletions
diff --git a/sca-java-2.x/tags/2.0.1-RC1/modules/implementation-spring-tie/src/main/java/org/apache/tuscany/sca/implementation/spring/elements/tie/SpringElementTie.java b/sca-java-2.x/tags/2.0.1-RC1/modules/implementation-spring-tie/src/main/java/org/apache/tuscany/sca/implementation/spring/elements/tie/SpringElementTie.java
new file mode 100644
index 0000000000..c088e5d0f2
--- /dev/null
+++ b/sca-java-2.x/tags/2.0.1-RC1/modules/implementation-spring-tie/src/main/java/org/apache/tuscany/sca/implementation/spring/elements/tie/SpringElementTie.java
@@ -0,0 +1,70 @@
+/*
+ * 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.tuscany.sca.implementation.spring.elements.tie;
+
+import java.lang.reflect.Field;
+import java.lang.reflect.ParameterizedType;
+import java.lang.reflect.Type;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.List;
+
+/**
+ * A hacking utility to copy beans field by field between two class loaders
+ */
+public class SpringElementTie {
+    public static <T> T copy(Object source, Class<T> cls, Type genericType) {
+        if (source == null) {
+            return null;
+        }
+        if (cls.isPrimitive()) {
+            return (T)source;
+        }
+        if (Collection.class.isAssignableFrom(cls)) {
+            ParameterizedType pType = (ParameterizedType)genericType;
+            Type itemType = pType.getActualTypeArguments()[0];
+            Collection col = (Collection)source;
+            List target = new ArrayList();
+            for (Object item : col) {
+                target.add(copy(item, (Class<?>)itemType, itemType));
+            }
+            return (T)target;
+        }
+        if (cls.isInstance(source)) {
+            return cls.cast(source);
+        }
+        try {
+            Class<?> sourceClass = source.getClass();
+            T target = cls.newInstance();
+            for (Field sourceField : sourceClass.getDeclaredFields()) {
+                sourceField.setAccessible(true);
+                Field targetField = cls.getDeclaredField(sourceField.getName());
+                targetField.setAccessible(true);
+                Object sourceFieldValue = sourceField.get(source);
+                Object targetFieldValue = copy(sourceFieldValue, targetField.getType(), targetField.getGenericType());
+                targetField.set(target, targetFieldValue);
+            }
+            return target;
+        } catch (Throwable e) {
+            throw new IllegalArgumentException(e);
+        }
+    }
+
+}