| /* |
| * 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. |
| */ |
| |
| using System; |
| using System.Collections.Generic; |
| using Apache.Ignite.Core; |
| using Apache.Ignite.Core.Cache.Event; |
| using Apache.Ignite.Core.Cache.Query.Continuous; |
| using Apache.Ignite.Core.Discovery.Tcp; |
| using Apache.Ignite.Core.Discovery.Tcp.Static; |
| |
| namespace dotnet_helloworld |
| { |
| public class ContinuousQueries |
| { |
| // tag::localListener[] |
| // tag::remoteFilter[] |
| class LocalListener : ICacheEntryEventListener<int, string> |
| { |
| public void OnEvent(IEnumerable<ICacheEntryEvent<int, string>> evts) |
| { |
| foreach (var cacheEntryEvent in evts) |
| { |
| //react to update events here |
| } |
| } |
| } |
| // end::localListener[] |
| class RemoteFilter : ICacheEntryEventFilter<int, string> |
| { |
| public bool Evaluate(ICacheEntryEvent<int, string> e) |
| { |
| if (e.Key == 1) |
| { |
| return false; |
| } |
| Console.WriteLine("the value for key {0} was updated from {1} to {2}", e.Key, e.OldValue, e.Value); |
| return true; |
| } |
| } |
| // end::remoteFilter[] |
| |
| // tag::localListener[] |
| public static void ContinuousQueryListenerDemo() |
| { |
| var ignite = Ignition.Start(new IgniteConfiguration |
| { |
| DiscoverySpi = new TcpDiscoverySpi |
| { |
| LocalPort = 48500, |
| LocalPortRange = 20, |
| IpFinder = new TcpDiscoveryStaticIpFinder |
| { |
| Endpoints = new[] |
| { |
| "127.0.0.1:48500..48520" |
| } |
| } |
| } |
| }); |
| var cache = ignite.GetOrCreateCache<int, string>("myCache"); |
| |
| var query = new ContinuousQuery<int, string>(new LocalListener()); |
| |
| var handle = cache.QueryContinuous(query); |
| |
| cache.Put(1, "1"); |
| cache.Put(2, "2"); |
| } |
| // end::localListener[] |
| |
| // tag::remoteFilter[] |
| public static void ContinuousQueryFilterDemo() |
| { |
| var ignite = Ignition.Start(new IgniteConfiguration |
| { |
| DiscoverySpi = new TcpDiscoverySpi |
| { |
| LocalPort = 48500, |
| LocalPortRange = 20, |
| IpFinder = new TcpDiscoveryStaticIpFinder |
| { |
| Endpoints = new[] |
| { |
| "127.0.0.1:48500..48520" |
| } |
| } |
| } |
| }); |
| var cache = ignite.GetOrCreateCache<int, string>("myCache"); |
| |
| var query = new ContinuousQuery<int, string>(new LocalListener(), new RemoteFilter()); |
| |
| var handle = cache.QueryContinuous(query); |
| |
| cache.Put(1, "1"); |
| cache.Put(2, "2"); |
| } |
| // end::remoteFilter[] |
| |
| } |
| } |