svn commit: r1434957 - /openwebbeans/trunk/webbeans-impl/src/main/java/org/apache/webbeans/intercept/DecoratorHandler.java

[ar...@apache.org]

Author: arne
Date: Thu Jan 17 23:22:24 2013
New Revision: 1434957

URL: http://svn.apache.org/viewvc?rev=1434957&view=rev
Log:
OWB-344: Implemented DecoratorHandler

Added:
    openwebbeans/trunk/webbeans-impl/src/main/java/org/apache/webbeans/intercept/DecoratorHandler.java

Added: openwebbeans/trunk/webbeans-impl/src/main/java/org/apache/webbeans/intercept/DecoratorHandler.java
URL: http://svn.apache.org/viewvc/openwebbeans/trunk/webbeans-impl/src/main/java/org/apache/webbeans/intercept/DecoratorHandler.java?rev=1434957&view=auto
==============================================================================
--- openwebbeans/trunk/webbeans-impl/src/main/java/org/apache/webbeans/intercept/DecoratorHandler.java (added)
+++ openwebbeans/trunk/webbeans-impl/src/main/java/org/apache/webbeans/intercept/DecoratorHandler.java Thu Jan 17 23:22:24 2013
@@ -0,0 +1,77 @@
+/*
+ * 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.webbeans.intercept;
+
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+import java.util.LinkedHashMap;
+import java.util.List;
+import java.util.Map;
+
+import javax.enterprise.inject.spi.Decorator;
+
+import org.apache.webbeans.intercept.InterceptorResolutionService.BeanInterceptorInfo;
+import org.apache.webbeans.intercept.InterceptorResolutionService.BusinessMethodInterceptorInfo;
+import org.apache.webbeans.proxy.InterceptorHandler;
+import org.apache.webbeans.util.ExceptionUtil;
+
+public class DecoratorHandler implements InterceptorHandler {
+
+    private BeanInterceptorInfo interceptorInfo;
+    private List<Decorator<?>> decorators;
+    private Map<Decorator<?>, ?> instances;
+    private int index;
+    private Object target;
+
+    public DecoratorHandler(BeanInterceptorInfo interceptorInfo, List<Decorator<?>> decorators, Map<Decorator<?>, ?> instances, int index, Object target) {
+        this.interceptorInfo = interceptorInfo;
+        this.decorators = decorators;
+        this.instances = instances;
+        this.index = index;
+        this.target = target;
+    }
+
+    @Override
+    public Object invoke(Method method, Object[] args) {
+        BusinessMethodInterceptorInfo methodInterceptorInfo = interceptorInfo.getBusinessMethodsInfo().get(method);
+        LinkedHashMap<Decorator<?>, Method> methodDecorators = methodInterceptorInfo.getMethodDecorators();
+        for (int i = index; i < decorators.size(); i++)
+        {
+            Decorator<?> decorator = decorators.get(i);
+            Method decoratingMethod = methodDecorators.get(decorator);
+            if (decoratingMethod != null)
+            {
+                try {
+                    return decoratingMethod.invoke(instances.get(decorator), args);
+                } catch (InvocationTargetException e) {
+                    return ExceptionUtil.throwAsRuntimeException(e.getTargetException());
+                } catch (Exception e) {
+                    return ExceptionUtil.throwAsRuntimeException(e);
+                }
+            }
+        }
+        try {
+            return method.invoke(target, args);
+        } catch (InvocationTargetException e) {
+            return ExceptionUtil.throwAsRuntimeException(e.getTargetException());
+        } catch (Exception e) {
+            return ExceptionUtil.throwAsRuntimeException(e);
+        }
+    }
+}