1 files changed, 74 insertions, 0 deletions
diff --git a/sca-java-1.x/tags/1.6.1-TUSCANY-3909/implementation-java-runtime/src/main/java/org/apache/tuscany/sca/implementation/java/invocation/PolicyHandlingInterceptor.java b/sca-java-1.x/tags/1.6.1-TUSCANY-3909/implementation-java-runtime/src/main/java/org/apache/tuscany/sca/implementation/java/invocation/PolicyHandlingInterceptor.java
new file mode 100644
index 0000000000..8c85b46c65
--- /dev/null
+++ b/sca-java-1.x/tags/1.6.1-TUSCANY-3909/implementation-java-runtime/src/main/java/org/apache/tuscany/sca/implementation/java/invocation/PolicyHandlingInterceptor.java
@@ -0,0 +1,74 @@
+/*
+ * 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.java.invocation;
+
+import java.util.List;
+
+import org.apache.tuscany.sca.interfacedef.Operation;
+import org.apache.tuscany.sca.invocation.Interceptor;
+import org.apache.tuscany.sca.invocation.Invoker;
+import org.apache.tuscany.sca.invocation.Message;
+import org.apache.tuscany.sca.policy.util.PolicyHandler;
+
+/**
+ * An interceptor to invoke policy handlers before and after the invocation of operations on 
+ * an implementation.
+ *
+ * @version $Rev$ $Date$
+ */
+public class PolicyHandlingInterceptor implements Interceptor {
+    private Invoker next;
+    private List<PolicyHandler> policyHandlers = null;
+    private Operation targetOperation = null;
+
+    public PolicyHandlingInterceptor(Operation targetOperation, List<PolicyHandler> policyHandlers) {
+        this.policyHandlers = policyHandlers;
+        this.targetOperation = targetOperation;
+    }
+
+    public Message invoke(Message msg) {
+        try {
+            applyPreInvocationPolicies(targetOperation, msg);
+            msg = next.invoke(msg);
+        } finally {
+            applyPostInvocationPolices(targetOperation, msg);
+        }
+        return msg;
+    }
+
+    public void setNext(Invoker next) {
+        this.next = next;
+    }
+
+    public Invoker getNext() {
+        return next;
+    }
+
+    private void applyPreInvocationPolicies(Object... context) {
+        for (PolicyHandler policyHandler : policyHandlers) {
+            policyHandler.beforeInvoke(context);
+        }
+    }
+
+    private void applyPostInvocationPolices(Object... context) {
+        for ( int count = policyHandlers.size() - 1 ; count >= 0 ; --count) {
+            policyHandlers.get(count).afterInvoke(context);
+        }
+    }
+}