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Diffstat (limited to 'qpid/cpp/include/qmf/Subscription.h')
-rw-r--r-- | qpid/cpp/include/qmf/Subscription.h | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/qpid/cpp/include/qmf/Subscription.h b/qpid/cpp/include/qmf/Subscription.h new file mode 100644 index 0000000000..398a45b922 --- /dev/null +++ b/qpid/cpp/include/qmf/Subscription.h @@ -0,0 +1,82 @@ +#ifndef QMF_SUBSCRIPTION_H +#define QMF_SUBSCRIPTION_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 <qmf/ImportExport.h> +#include "qmf/Handle.h" +#include "qpid/types/Variant.h" +#include <string> + +namespace qmf { + +#ifndef SWIG + template <class> class PrivateImplRef; +#endif + + class SubscriptionImpl; + class Data; + + class QMF_CLASS_EXTERN Subscription : public qmf::Handle<SubscriptionImpl> { + public: + QMF_EXTERN Subscription(SubscriptionImpl* impl = 0); + QMF_EXTERN Subscription(const Subscription&); + QMF_EXTERN Subscription& operator=(const Subscription&); + QMF_EXTERN ~Subscription(); + + /** + * Construction: A subscription is created by calling ConsoleSession::subscribe. + */ + + /** + * Cancel subscriptions to all subscribed agents. After this is called, the subscription + * shall be inactive. + */ + QMF_EXTERN void cancel(); + + /** + * Check to see if this subscription is active. It is active if it has a live subscription + * on at least one agent. If it is not active, there is nothing that can be done to make it + * active, it can only be deleted. + */ + QMF_EXTERN bool isActive() const; + + /** + * lock and unlock should be used to bracket a traversal of the data set. After lock is called, + * the subscription will not change its set of available data objects. Between calls to getDataCount + * and getData, no data objects will be added or removed. After unlock is called, the set of data + * will catch up to any activity that occurred while the lock was in effect. + */ + QMF_EXTERN void lock(); + QMF_EXTERN void unlock(); + QMF_EXTERN uint32_t getDataCount() const; + QMF_EXTERN Data getData(uint32_t) const; + +#ifndef SWIG + private: + friend class qmf::PrivateImplRef<Subscription>; + friend struct SubscriptionImplAccess; +#endif + }; + +} + +#endif |