| /** |
| * 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 hello; |
| |
| import java.util.Arrays; |
| import java.util.List; |
| |
| import org.apache.s4.base.Event; |
| import org.apache.s4.base.KeyFinder; |
| import org.apache.s4.core.App; |
| |
| public class HelloApp extends App { |
| |
| @Override |
| protected void onStart() { |
| } |
| |
| @Override |
| protected void onInit() { |
| // create a prototype |
| HelloPE helloPE = createPE(HelloPE.class); |
| // Create a stream that listens to the "names" stream and passes events to the helloPE instance. |
| createInputStream("names", new KeyFinder<Event>() { |
| |
| @Override |
| public List<String> get(Event event) { |
| return Arrays.asList(new String[] { event.get("name") }); |
| } |
| }, helloPE); |
| } |
| |
| @Override |
| protected void onClose() { |
| } |
| |
| } |