| /* |
| * Copyright (c) 2013 DataTorrent, Inc. ALL Rights Reserved. |
| * |
| * Licensed 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.lib.logs; |
| |
| import java.util.HashMap; |
| import java.util.Map; |
| |
| import org.apache.commons.lang.mutable.MutableDouble; |
| |
| import com.datatorrent.api.Context.OperatorContext; |
| import com.datatorrent.api.DefaultInputPort; |
| import com.datatorrent.api.DefaultOutputPort; |
| import com.datatorrent.api.Operator; |
| |
| /** |
| * This unifier ingests tuples that are Maps from Strings to DimensionObjects and sums the corresponding DimensionObjects. |
| * A Map from Strings to aggregated DimensionObjects is emitted by the unifier. |
| * <p></p> |
| * @displayName Dimension Aggregation Unifier |
| * @category Logs |
| * @tags aggregation, unifier |
| * |
| * @since 0.9.0 |
| */ |
| public class DimensionAggregationUnifier implements Operator |
| { |
| |
| private Map<String, Map<String, MutableDouble>> dataMap = new HashMap<String, Map<String, MutableDouble>>(); |
| |
| public final transient DefaultOutputPort<Map<String, DimensionObject<String>>> output = new DefaultOutputPort<Map<String, DimensionObject<String>>>(); |
| public final transient DefaultInputPort<Map<String, DimensionObject<String>>> input = new DefaultInputPort<Map<String, DimensionObject<String>>>() { |
| |
| @Override |
| public void process(Map<String, DimensionObject<String>> tuple) |
| { |
| for (Map.Entry<String, DimensionObject<String>> e : tuple.entrySet()) { |
| Map<String, MutableDouble> obj = dataMap.get(e.getKey()); |
| DimensionObject<String> eObj = e.getValue(); |
| if (obj == null) { |
| obj = new HashMap<String, MutableDouble>(); |
| obj.put(eObj.getVal(), new MutableDouble(eObj.getCount())); |
| dataMap.put(e.getKey(), obj); |
| } else { |
| MutableDouble n = obj.get(eObj.getVal()); |
| if (n == null) { |
| obj.put(eObj.getVal(), new MutableDouble(eObj.getCount())); |
| } else { |
| n.add(eObj.getCount()); |
| } |
| } |
| } |
| |
| } |
| }; |
| |
| @Override |
| public void setup(OperatorContext context) |
| { |
| // TODO Auto-generated method stub |
| |
| } |
| |
| @Override |
| public void teardown() |
| { |
| // TODO Auto-generated method stub |
| |
| } |
| |
| @Override |
| public void beginWindow(long windowId) |
| { |
| dataMap = new HashMap<String, Map<String, MutableDouble>>(); |
| // TODO Auto-generated method stub |
| |
| } |
| |
| @Override |
| public void endWindow() |
| { |
| for (Map.Entry<String, Map<String, MutableDouble>> e : dataMap.entrySet()) { |
| for (Map.Entry<String, MutableDouble> dimensionValObj : e.getValue().entrySet()) { |
| Map<String, DimensionObject<String>> outputData = new HashMap<String, DimensionObject<String>>(); |
| outputData.put(e.getKey(), new DimensionObject<String>(dimensionValObj.getValue(), dimensionValObj.getKey())); |
| output.emit(outputData); |
| } |
| } |
| dataMap.clear(); |
| } |
| |
| } |