| /* |
| * 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 <iostream> |
| |
| #include "ignite/ignite.h" |
| #include "ignite/ignition.h" |
| |
| using namespace ignite; |
| using namespace cache; |
| using namespace query; |
| |
| //tag::continuous-query-listener[] |
| /** |
| * Listener class. |
| */ |
| template<typename K, typename V> |
| class Listener : public event::CacheEntryEventListener<K, V> |
| { |
| public: |
| /** |
| * Default constructor. |
| */ |
| Listener() |
| { |
| // No-op. |
| } |
| |
| /** |
| * Event callback. |
| * |
| * @param evts Events. |
| * @param num Events number. |
| */ |
| virtual void OnEvent(const CacheEntryEvent<K, V>* evts, uint32_t num) |
| { |
| for (uint32_t i = 0; i < num; ++i) |
| { |
| std::cout << "Queried entry [key=" << (evts[i].HasValue() ? evts[i].GetKey() : K()) |
| << ", val=" << (evts[i].HasValue() ? evts[i].GetValue() : V()) << ']' |
| << std::endl; |
| } |
| } |
| }; |
| |
| int main() |
| { |
| IgniteConfiguration cfg; |
| cfg.springCfgPath = "/path/to/configuration.xml"; |
| |
| Ignite ignite = Ignition::Start(cfg); |
| |
| Cache<int32_t, std::string> cache = ignite.GetOrCreateCache<int32_t, std::string>("myCache"); |
| |
| // Declaring custom listener. |
| Listener<int32_t, std::string> listener; |
| |
| // Declaring continuous query. |
| continuous::ContinuousQuery<int32_t, std::string> query(MakeReference(listener)); |
| |
| continuous::ContinuousQueryHandle<int32_t, std::string> handle = cache.QueryContinuous(query); |
| } |
| //end::continuous-query-listener[] |