Start of an annottaion processor for handling SCA annotations on webapp resources

git-svn-id: http://svn.us.apache.org/repos/asf/tuscany@681339 13f79535-47bb-0310-9956-ffa450edef68

2 files changed, 74 insertions, 0 deletions

diff --git a/java/sca/modules/runtime-tomcat/src/main/java/org/apache/tuscany/sca/runtime/tomcat/TuscanyAnnotationProcessor.java b/java/sca/modules/runtime-tomcat/src/main/java/org/apache/tuscany/sca/runtime/tomcat/TuscanyAnnotationProcessor.java
new file mode 100644
index 0000000000..2b14fcef31
--- /dev/null
+++ b/java/sca/modules/runtime-tomcat/src/main/java/org/apache/tuscany/sca/runtime/tomcat/TuscanyAnnotationProcessor.java
@@ -0,0 +1,72 @@
+/*

+ * 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.runtime.tomcat;

+

+import java.lang.reflect.Field;

+import java.lang.reflect.InvocationTargetException;

+import java.lang.reflect.Method;

+

+import javax.naming.NamingException;

+

+import org.apache.AnnotationProcessor;

+import org.osoa.sca.annotations.Reference;

+

+/**

+ * A Tuscany specific Tomcat annotation processor for processing SCA annotations

+ */

+public class TuscanyAnnotationProcessor implements AnnotationProcessor {

+

+    public void postConstruct(Object instance) throws IllegalAccessException, InvocationTargetException {

+    }

+

+    public void preDestroy(Object instance) throws IllegalAccessException, InvocationTargetException {

+    }

+

+    public void processAnnotations(Object instance) throws IllegalAccessException, InvocationTargetException, NamingException {

+        

+        // Initialize fields annotations

+        Field[] fields = instance.getClass().getDeclaredFields();

+        for (int i = 0; i < fields.length; i++) {

+            if (fields[i].isAnnotationPresent(Reference.class)) {

+                Reference annotation = fields[i].getAnnotation(Reference.class);

+                injectFieldResource(instance, fields[i], annotation);

+            }

+        }

+        

+        // Initialize methods annotations

+        Method[] methods = instance.getClass().getDeclaredMethods();

+        for (int i = 0; i < methods.length; i++) {

+            if (methods[i].isAnnotationPresent(Reference.class)) {

+                Reference annotation = methods[i].getAnnotation(Reference.class);

+                injectMethodResource(instance, methods[i], annotation);

+            }

+        }

+

+    }

+

+    protected void injectFieldResource(Object instance, Field field, Reference annotation) {

+        System.out.println("TuscanyAnnotationProcessor.injectFieldResource" + annotation);

+    }

+

+    protected void injectMethodResource(Object instance, Method method, Reference annotation) {

+        System.out.println("TuscanyAnnotationProcessor.injectMethodResource" + annotation);

+    }

+

+}

diff --git a/java/sca/modules/runtime-tomcat/src/main/java/org/apache/tuscany/sca/runtime/tomcat/TuscanyHost.java b/java/sca/modules/runtime-tomcat/src/main/java/org/apache/tuscany/sca/runtime/tomcat/TuscanyHost.java
index 190fe137d9..8a669a9cc2 100644
--- a/java/sca/modules/runtime-tomcat/src/main/java/org/apache/tuscany/sca/runtime/tomcat/TuscanyHost.java
+++ b/java/sca/modules/runtime-tomcat/src/main/java/org/apache/tuscany/sca/runtime/tomcat/TuscanyHost.java
@@ -148,6 +148,8 @@ public class TuscanyHost extends StandardHost {
         filterMap.addURLPattern("/*");
         scaApp.addFilterMap(filterMap);
 
+        scaApp.setAnnotationProcessor(new TuscanyAnnotationProcessor());
+        
         scaApps.add(scaApp);
     }