| /* |
| * 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.streampipes.pe.examples.jvm.eventmodel; |
| |
| import org.apache.streampipes.commons.exceptions.SpRuntimeException; |
| import org.apache.streampipes.extensions.api.pe.IStreamPipesDataProcessor; |
| import org.apache.streampipes.extensions.api.pe.config.IDataProcessorConfiguration; |
| import org.apache.streampipes.extensions.api.pe.context.EventProcessorRuntimeContext; |
| import org.apache.streampipes.extensions.api.pe.param.IDataProcessorParameters; |
| import org.apache.streampipes.extensions.api.pe.routing.SpOutputCollector; |
| import org.apache.streampipes.model.runtime.Event; |
| |
| import java.util.List; |
| |
| public class EventModelExamples implements IStreamPipesDataProcessor { |
| |
| /** |
| * Example event: |
| * { "timestamp" : 12345, "temperature" : 45.6, "deviceId" : "sensor1", "running" : true, |
| * "location" : {"latitude" : 34.4, "longitude" : -47}, "lastValues" : [45, 22, 21]} |
| */ |
| |
| private String temperatureSelector; |
| private String runningSelector; |
| private String deviceIdSelector; |
| private String latitudeSelector; |
| private String lastValueSelector; |
| |
| @Override |
| public IDataProcessorConfiguration declareConfig() { |
| return null; |
| } |
| |
| @Override |
| public void onPipelineStarted(IDataProcessorParameters params, SpOutputCollector collector, EventProcessorRuntimeContext runtimeContext) { |
| |
| } |
| |
| @Override |
| public void onEvent(Event event, SpOutputCollector collector) throws SpRuntimeException { |
| |
| Float temperatureValue = event.getFieldBySelector(temperatureSelector).getAsPrimitive().getAsFloat(); |
| String deviceId = event.getFieldBySelector(deviceIdSelector).getAsPrimitive().getAsString(); |
| |
| Double latitude = event.getFieldBySelector(latitudeSelector).getAsPrimitive().getAsDouble(); |
| |
| Boolean running = event.getFieldBySelector(runningSelector).getAsPrimitive().getAsBoolean(); |
| |
| List<Integer> lastValues = event.getFieldBySelector(lastValueSelector).getAsList().parseAsSimpleType(Integer.class); |
| |
| |
| event.addField("city", "Karlsruhe"); |
| event.removeFieldBySelector(temperatureSelector); |
| event.addField("fahrenheit", 48); |
| |
| } |
| |
| @Override |
| public void onPipelineStopped() { |
| |
| } |
| |
| |
| } |