1 files changed, 56 insertions, 0 deletions
diff --git a/qpid/cpp/src/qpid/sys/ConnectionOutputHandlerPtr.h b/qpid/cpp/src/qpid/sys/ConnectionOutputHandlerPtr.h
new file mode 100644
index 0000000000..95a08d15ae
--- /dev/null
+++ b/qpid/cpp/src/qpid/sys/ConnectionOutputHandlerPtr.h
@@ -0,0 +1,56 @@
+#ifndef QPID_SYS_CONNECTIONOUTPUTHANDLERPTR_H
+#define QPID_SYS_CONNECTIONOUTPUTHANDLERPTR_H
+
+/*
+ *
+ * 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.
+ *
+ */
+
+#include "qpid/sys/ConnectionOutputHandler.h"
+
+namespace qpid {
+namespace sys {
+
+/**
+ * A ConnectionOutputHandler that delegates to another
+ * ConnectionOutputHandler.  Allows the "real" ConnectionOutputHandler
+ * to be changed without updating all the pointers/references
+ * using the ConnectionOutputHandlerPtr
+ */
+class ConnectionOutputHandlerPtr : public ConnectionOutputHandler
+{
+  public:
+    ConnectionOutputHandlerPtr(ConnectionOutputHandler* p) : next(p) { assert(next); }
+    void set(ConnectionOutputHandler* p) { next = p; assert(next); }
+    ConnectionOutputHandler* get() { return next; }
+    const ConnectionOutputHandler* get() const { return next; }
+
+    void close() { next->close(); }
+    size_t getBuffered() const { return next->getBuffered(); }
+    void abort() { next->abort(); }
+    void activateOutput() { next->activateOutput(); }
+    void giveReadCredit(int32_t credit) { next->giveReadCredit(credit); }
+    void send(framing::AMQFrame& f) { next->send(f); }
+
+  private:
+    ConnectionOutputHandler* next;
+};
+}} // namespace qpid::sys
+
+#endif  /*!QPID_SYS_CONNECTIONOUTPUTHANDLERPTR_H*/