added annotation for Aspects

git-svn-id: https://svn.apache.org/repos/asf/felix/trunk@907751 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/dependencymanager/annotation/src/main/java/org/apache/felix/dm/annotation/api/AspectService.java b/dependencymanager/annotation/src/main/java/org/apache/felix/dm/annotation/api/AspectService.java
new file mode 100644
index 0000000..e1374a5
--- /dev/null
+++ b/dependencymanager/annotation/src/main/java/org/apache/felix/dm/annotation/api/AspectService.java
@@ -0,0 +1,56 @@
+/*
+ * 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.felix.dm.annotation.api;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+/**
+ * Annotates an Aspect Service. The aspect will be applied to any service that
+ * matches the specified interface and filter. For each matching service
+ * an aspect will be created based on the aspect implementation class.
+ * The aspect will be registered with the same interface and properties
+ * as the original service, plus any extra properties you supply here.
+ * It will also inherit all dependencies, and if you declare the original
+ * service as a member it will be injected.
+ */
+@Retention(RetentionPolicy.CLASS)
+@Target(ElementType.TYPE)
+public @interface AspectService
+{
+    /**
+     * Returns the service interface to apply the aspect to. By default, the directly implemented interface is used.
+     * @return The service interface to apply the aspect to.
+     */
+    Class<?> service() default Object.class;
+
+    /**
+     * the filter condition to use with the service interface this aspect is applying to.
+     * @return the filter condition to use with the service interface
+     */
+    String filter();
+    
+    /**
+     * Additional properties to use with the aspect service registration
+     * @return additional properties to use with the aspect service registration
+     */
+    Param[] properties();
+}