Implementation of execution.result on the client side

git-svn-id: https://svn.apache.org/repos/asf/incubator/qpid/trunk/qpid@573359 13f79535-47bb-0310-9956-ffa450edef68

1 files changed, 97 insertions, 0 deletions

diff --git a/cpp/src/qpid/client/Future.h b/cpp/src/qpid/client/Future.h
new file mode 100644
index 0000000000..c2f3b426da
--- /dev/null
+++ b/cpp/src/qpid/client/Future.h
@@ -0,0 +1,97 @@
+/*
+ *
+ * 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.
+ *
+ */
+
+#ifndef _Future_
+#define _Future_
+
+#include <boost/bind.hpp>
+#include <boost/shared_ptr.hpp>
+#include "qpid/Exception.h"
+#include "qpid/framing/SequenceNumber.h"
+#include "qpid/framing/StructHelper.h"
+#include "FutureCompletion.h"
+#include "FutureResponse.h"
+#include "FutureResult.h"
+#include "SessionCore.h"
+
+namespace qpid {
+namespace client {
+
+class Future : private framing::StructHelper
+{
+    framing::SequenceNumber command;
+    boost::shared_ptr<FutureResponse> response;
+    boost::shared_ptr<FutureResult> result;
+    bool complete;
+
+public:
+    Future() : complete(false) {}    
+    Future(const framing::SequenceNumber& id) : command(id), complete(false) {}    
+
+    void sync(SessionCore& session)
+    {
+        if (!complete) {
+            FutureCompletion callback;
+            session.getExecution().flushTo(command);
+            session.getExecution().getCompletionTracker().listenForCompletion(
+                command,                                                     
+                boost::bind(&FutureCompletion::completed, &callback)
+            );
+            callback.waitForCompletion();
+            session.checkClosed();
+            complete = true;
+        }
+    }
+
+    framing::AMQMethodBody* getResponse(SessionCore& session) 
+    {
+        if (response) {
+            session.getExecution().getCompletionTracker().listenForCompletion(
+                command,                                                     
+                boost::bind(&FutureResponse::completed, response)
+            );            
+            return response->getResponse(session);
+        } else {
+            throw Exception("Response not expected");
+        }
+    }
+
+    template <class T> void decodeResult(T& value, SessionCore& session) 
+    {
+        if (result) {
+            decode(value, result->getResult(session));
+        } else {
+            throw Exception("Result not expected");
+        }
+    }
+
+    bool isComplete() {
+        return complete;
+    }
+
+    void setCommandId(const framing::SequenceNumber& id) { command = id; }
+    void setFutureResponse(boost::shared_ptr<FutureResponse> r) { response = r; }
+    void setFutureResult(boost::shared_ptr<FutureResult> r) { result = r; }
+};
+
+}}
+
+#endif