| /* |
| * 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.ignite.examples.binary.computegrid; |
| |
| import java.util.ArrayList; |
| import java.util.Arrays; |
| import java.util.Collection; |
| import org.apache.ignite.Ignite; |
| import org.apache.ignite.Ignition; |
| import org.apache.ignite.binary.BinaryObject; |
| import org.apache.ignite.examples.model.Address; |
| import org.apache.ignite.examples.model.Employee; |
| |
| /** |
| * This example demonstrates use of binary objects with task execution. |
| * Specifically it shows that binary objects are simple Java POJOs and do not require any special treatment. |
| * <p> |
| * The example executes map-reduce task that accepts collection of binary objects as an argument. |
| * Since these objects are never deserialized on remote nodes, classes are not required on classpath |
| * of these nodes. |
| * <p> |
| * Remote nodes should always be started with the following command: |
| * {@code 'ignite.{sh|bat} examples/config/example-ignite.xml'}. |
| * <p> |
| * Alternatively you can run {@link org.apache.ignite.examples.ExampleNodeStartup} in another JVM which will |
| * start a node with {@code examples/config/example-ignite.xml} configuration. |
| */ |
| public class ComputeClientBinaryTaskExecutionExample { |
| /** |
| * Executes example. |
| * |
| * @param args Command line arguments, none required. |
| */ |
| public static void main(String[] args) { |
| try (Ignite ignite = Ignition.start("examples/config/example-ignite.xml")) { |
| System.out.println(); |
| System.out.println(">>> Binary objects task execution example started."); |
| |
| if (ignite.cluster().forRemotes().nodes().isEmpty()) { |
| System.out.println(); |
| System.out.println(">>> This example requires remote nodes to be started."); |
| System.out.println(">>> Please start at least 1 remote node."); |
| System.out.println(">>> Refer to example's javadoc for details on configuration."); |
| System.out.println(); |
| |
| return; |
| } |
| |
| // Generate employees to calculate average salary for. |
| Collection<Employee> employees = employees(); |
| |
| System.out.println(); |
| System.out.println(">>> Calculating average salary for employees:"); |
| |
| for (Employee employee : employees) |
| System.out.println(">>> " + employee); |
| |
| // Convert collection of employees to collection of binary objects. |
| // This allows to send objects across nodes without requiring to have |
| // Employee class on classpath of these nodes. |
| Collection<BinaryObject> binaries = ignite.binary().toBinary(employees); |
| |
| // Execute task and get average salary. |
| Long avgSalary = ignite.compute(ignite.cluster().forRemotes()).execute(new ComputeClientTask(), binaries); |
| |
| System.out.println(); |
| System.out.println(">>> Average salary for all employees: " + avgSalary); |
| System.out.println(); |
| } |
| } |
| |
| /** |
| * Creates collection of employees. |
| * |
| * @return Collection of employees. |
| */ |
| private static Collection<Employee> employees() { |
| Collection<Employee> employees = new ArrayList<>(); |
| |
| employees.add(new Employee( |
| "James Wilson", |
| 12500, |
| new Address("1096 Eddy Street, San Francisco, CA", 94109), |
| Arrays.asList("Human Resources", "Customer Service") |
| )); |
| |
| employees.add(new Employee( |
| "Daniel Adams", |
| 11000, |
| new Address("184 Fidler Drive, San Antonio, TX", 78205), |
| Arrays.asList("Development", "QA") |
| )); |
| |
| employees.add(new Employee( |
| "Cristian Moss", |
| 12500, |
| new Address("667 Jerry Dove Drive, Florence, SC", 29501), |
| Arrays.asList("Logistics") |
| )); |
| |
| employees.add(new Employee( |
| "Allison Mathis", |
| 25300, |
| new Address("2702 Freedom Lane, Hornitos, CA", 95325), |
| Arrays.asList("Development") |
| )); |
| |
| employees.add(new Employee( |
| "Breana Robbin", |
| 6500, |
| new Address("3960 Sundown Lane, Austin, TX", 78758), |
| Arrays.asList("Sales") |
| )); |
| |
| employees.add(new Employee( |
| "Philip Horsley", |
| 19800, |
| new Address("2803 Elsie Drive, Sioux Falls, SD", 57104), |
| Arrays.asList("Sales") |
| )); |
| |
| employees.add(new Employee( |
| "Brian Peters", |
| 10600, |
| new Address("1407 Pearlman Avenue, Boston, MA", 12110), |
| Arrays.asList("Development", "QA") |
| )); |
| |
| employees.add(new Employee( |
| "Jack Yang", |
| 12900, |
| new Address("4425 Parrish Avenue Smithsons Valley, TX", 78130), |
| Arrays.asList("Sales") |
| )); |
| |
| return employees; |
| } |
| } |