1 files changed, 73 insertions, 0 deletions
diff --git a/sca-java-1.x/tags/java-stable-20060304/sca/core/src/main/java/org/apache/tuscany/core/invocation/impl/RequestResponseInterceptor.java b/sca-java-1.x/tags/java-stable-20060304/sca/core/src/main/java/org/apache/tuscany/core/invocation/impl/RequestResponseInterceptor.java
new file mode 100644
index 0000000000..03122f0992
--- /dev/null
+++ b/sca-java-1.x/tags/java-stable-20060304/sca/core/src/main/java/org/apache/tuscany/core/invocation/impl/RequestResponseInterceptor.java
@@ -0,0 +1,73 @@
+/**
+ *
+ *  Copyright 2005 The Apache Software Foundation or its licensors, as applicable.
+ *
+ *  Licensed 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.core.invocation.impl;
+
+import org.apache.tuscany.core.invocation.Interceptor;
+import org.apache.tuscany.core.invocation.MessageChannel;
+import org.apache.tuscany.core.message.Message;
+
+/**
+ * An interceptor that first sends the invocation Message down its request channel then extracts the response from the
+ * message and sends it down the response channel before returning it up the interceptor stack.
+ * 
+ * @version $Rev$ $Date$
+ */
+public class RequestResponseInterceptor implements Interceptor {
+
+    private MessageChannel sourceRequestChannel;
+
+    private MessageChannel sourceResponseChannel;
+
+    private MessageChannel targetRequestChannel;
+
+    private MessageChannel targetResponseChannel;
+
+    /**
+     * Construct an interceptor that sends messages down the supplied channels.
+     * 
+     * @param targetRequestChannel the channel to send request messages down
+     * @param targetResponseChannel the channel to sent response messages down
+     */
+    public RequestResponseInterceptor(MessageChannel sourceRequestChannel, MessageChannel targetRequestChannel,
+            MessageChannel sourceResponseChannel, MessageChannel targetResponseChannel) {
+        this.sourceRequestChannel = sourceRequestChannel;
+        this.sourceResponseChannel = sourceResponseChannel;
+        this.targetRequestChannel = targetRequestChannel;
+        this.targetResponseChannel = targetResponseChannel;
+    }
+
+    public Message invoke(Message requestMessage) {
+        if (sourceRequestChannel != null) {
+            sourceRequestChannel.send(requestMessage);
+        }
+        if (targetRequestChannel != null) {
+            targetRequestChannel.send(requestMessage);
+        }
+        Message responseMessage = requestMessage.getRelatedCallbackMessage();
+        if (targetResponseChannel != null) {
+            targetResponseChannel.send(responseMessage);
+        }
+        if (sourceResponseChannel != null) {
+            sourceResponseChannel.send(responseMessage);
+        }
+        return responseMessage;
+    }
+
+    public void setNext(Interceptor next) {
+        throw new IllegalStateException("This interceptor must be the last one in an interceptor chain");
+    }
+}