| /* |
| * 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. |
| */ |
| package org.apache.geode_examples.functions; |
| |
| import java.util.HashSet; |
| import java.util.List; |
| import java.util.Set; |
| import java.util.stream.IntStream; |
| |
| import org.apache.geode.cache.Region; |
| import org.apache.geode.cache.client.ClientCache; |
| import org.apache.geode.cache.client.ClientCacheFactory; |
| import org.apache.geode.cache.client.ClientRegionShortcut; |
| import org.apache.geode.cache.execute.Execution; |
| import org.apache.geode.cache.execute.FunctionService; |
| import org.apache.geode.cache.execute.ResultCollector; |
| |
| public class Example { |
| private int maximum; |
| |
| public static void main(String[] args) { |
| // connect to the locator using default port 10334 |
| ClientCache cache = new ClientCacheFactory().addPoolLocator("127.0.0.1", 10334) |
| .set("log-level", "WARN").create(); |
| |
| // create a local region that matches the server region |
| Region<Integer, String> region = |
| cache.<Integer, String>createClientRegionFactory(ClientRegionShortcut.CACHING_PROXY) |
| .create("example-region"); |
| |
| Execution execution = FunctionService.onRegion(region); |
| new Example().getPrimes(region, execution); |
| cache.close(); |
| } |
| |
| public Example() { |
| this(100); |
| } |
| |
| public Example(int maximum) { |
| this.maximum = maximum; |
| } |
| |
| public Set<Integer> getPrimes(Region<Integer, String> region, Execution execution) { |
| Set<Integer> primes = new HashSet<>(); |
| |
| for (Integer key : (Iterable<Integer>) () -> IntStream.rangeClosed(1, maximum).iterator()) { |
| region.put(key, key.toString()); |
| } |
| |
| ResultCollector<Integer, List> results = execution.execute(PrimeNumber.ID); |
| primes.addAll(results.getResult()); |
| System.out.println("The primes in the range from 1 to " + maximum + " are:\n" + primes); |
| return primes; |
| } |
| } |