| /** |
| * 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 com.datatorrent.samples.lib.math; |
| |
| import java.util.Random; |
| |
| import com.datatorrent.api.DefaultOutputPort; |
| import com.datatorrent.api.InputOperator; |
| import com.datatorrent.api.Context.OperatorContext; |
| import com.datatorrent.lib.util.KeyValPair; |
| |
| /** |
| * Input port operator for generating random values on keys. <br> |
| * Key(s) : key1, key2, key3, key4, key5. <br> |
| * |
| * @since 0.3.2 |
| */ |
| public class RandomKeyValues implements InputOperator |
| { |
| |
| public final transient DefaultOutputPort<KeyValPair<String, Integer>> outport = new DefaultOutputPort<KeyValPair<String, Integer>>(); |
| private Random random = new Random(11111); |
| |
| @Override |
| public void beginWindow(long windowId) |
| { |
| // TODO Auto-generated method stub |
| |
| } |
| |
| @Override |
| public void endWindow() |
| { |
| // TODO Auto-generated method stub |
| |
| } |
| |
| @Override |
| public void setup(OperatorContext context) |
| { |
| // TODO Auto-generated method stub |
| |
| } |
| |
| @Override |
| public void teardown() |
| { |
| // TODO Auto-generated method stub |
| |
| } |
| |
| @Override |
| public void emitTuples() |
| { |
| outport.emit(new KeyValPair<String, Integer>("key1", random.nextInt())); |
| outport.emit(new KeyValPair<String, Integer>("key2", random.nextInt())); |
| outport.emit(new KeyValPair<String, Integer>("key3", random.nextInt())); |
| outport.emit(new KeyValPair<String, Integer>("key4", random.nextInt())); |
| outport.emit(new KeyValPair<String, Integer>("key5", random.nextInt())); |
| try |
| { |
| Thread.sleep(500); |
| } catch (Exception e) |
| { |
| } |
| } |
| |
| } |