| #ifndef QPID_MESSAGING_RECEIVER_H |
| #define QPID_MESSAGING_RECEIVER_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/messaging/ImportExport.h" |
| |
| #include "qpid/messaging/exceptions.h" |
| #include "qpid/messaging/Handle.h" |
| #include "qpid/messaging/Duration.h" |
| |
| namespace qpid { |
| namespace messaging { |
| |
| #ifndef SWIG |
| template <class> class PrivateImplRef; |
| #endif |
| |
| class Message; |
| class ReceiverImpl; |
| class Session; |
| |
| /** \ingroup messaging |
| * Interface through which messages are received. |
| */ |
| class QPID_MESSAGING_CLASS_EXTERN Receiver : public qpid::messaging::Handle<ReceiverImpl> |
| { |
| public: |
| QPID_MESSAGING_EXTERN Receiver(ReceiverImpl* impl = 0); |
| QPID_MESSAGING_EXTERN Receiver(const Receiver&); |
| QPID_MESSAGING_EXTERN ~Receiver(); |
| QPID_MESSAGING_EXTERN Receiver& operator=(const Receiver&); |
| /** |
| * Retrieves a message from this receivers local queue, or waits |
| * for upto the specified timeout for a message to become |
| * available. |
| */ |
| QPID_MESSAGING_EXTERN bool get(Message& message, Duration timeout=Duration::FOREVER); |
| /** |
| * Retrieves a message from this receivers local queue, or waits |
| * for up to the specified timeout for a message to become |
| * available. |
| * |
| * @exception NoMessageAvailable if there is no message to give |
| * after waiting for the specified timeout, or if the Receiver is |
| * closed, in which case isClose() will be true. |
| */ |
| QPID_MESSAGING_EXTERN Message get(Duration timeout=Duration::FOREVER); |
| /** |
| * Retrieves a message for this receivers subscription or waits |
| * for up to the specified timeout for one to become |
| * available. Unlike get() this method will check with the server |
| * that there is no message for the subscription this receiver is |
| * serving before returning false. |
| * |
| * @return false if there is no message to give after |
| * waiting for the specified timeout, or if the Receiver is |
| * closed, in which case isClose() will be true. |
| */ |
| QPID_MESSAGING_EXTERN bool fetch(Message& message, Duration timeout=Duration::FOREVER); |
| /** |
| * Retrieves a message for this receivers subscription or waits |
| * for up to the specified timeout for one to become |
| * available. Unlike get() this method will check with the server |
| * that there is no message for the subscription this receiver is |
| * serving before throwing an exception. |
| * |
| * @exception NoMessageAvailable if there is no message to give |
| * after waiting for the specified timeout, or if the Receiver is |
| * closed, in which case isClose() will be true. |
| */ |
| QPID_MESSAGING_EXTERN Message fetch(Duration timeout=Duration::FOREVER); |
| /** |
| * Sets the capacity for the receiver. The capacity determines how |
| * many incoming messages can be held in the receiver before being |
| * requested by a client via fetch() (or pushed to a listener). |
| */ |
| QPID_MESSAGING_EXTERN void setCapacity(uint32_t); |
| /** |
| * @return the capacity of the receiver. The capacity determines |
| * how many incoming messages can be held in the receiver before |
| * being requested by a client via fetch() (or pushed to a |
| * listener). |
| */ |
| QPID_MESSAGING_EXTERN uint32_t getCapacity(); |
| /** |
| * @return the number of messages received and waiting to be |
| * fetched. |
| */ |
| QPID_MESSAGING_EXTERN uint32_t getAvailable(); |
| /** |
| * @return a count of the number of messages received on this |
| * receiver that have been acknowledged, but for which that |
| * acknowledgement has not yet been confirmed as processed by the |
| * server. |
| */ |
| QPID_MESSAGING_EXTERN uint32_t getUnsettled(); |
| |
| /** |
| * Cancels this receiver. |
| */ |
| QPID_MESSAGING_EXTERN void close(); |
| |
| /** |
| * Return true if the receiver was closed by a call to close() |
| */ |
| QPID_MESSAGING_EXTERN bool isClosed() const; |
| |
| /** |
| * Returns the name of this receiver. |
| */ |
| QPID_MESSAGING_EXTERN const std::string& getName() const; |
| |
| /** |
| * Returns a handle to the session associated with this receiver. |
| */ |
| QPID_MESSAGING_EXTERN Session getSession() const; |
| |
| #ifndef SWIG |
| private: |
| friend class qpid::messaging::PrivateImplRef<Receiver>; |
| #endif |
| }; |
| }} // namespace qpid::messaging |
| |
| #endif /*!QPID_MESSAGING_RECEIVER_H*/ |