| /** |
| * 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.apex.malhar.lib.window.impl; |
| |
| import java.util.Map; |
| |
| import javax.validation.constraints.NotNull; |
| |
| import org.apache.apex.malhar.lib.state.spillable.Spillable; |
| import org.apache.apex.malhar.lib.state.spillable.SpillableComplexComponent; |
| import org.apache.apex.malhar.lib.utils.serde.GenericSerde; |
| import org.apache.apex.malhar.lib.utils.serde.Serde; |
| import org.apache.apex.malhar.lib.window.Window; |
| import org.apache.apex.malhar.lib.window.WindowedStorage; |
| |
| import com.datatorrent.api.Context; |
| |
| /** |
| * This is an implementation of WindowedPlainStorage that makes use of {@link Spillable} data structures |
| * |
| * @param <T> Type of the value per window |
| * |
| * @since 3.6.0 |
| */ |
| public class SpillableWindowedPlainStorage<T> implements WindowedStorage.WindowedPlainStorage<T> |
| { |
| @NotNull |
| private SpillableComplexComponent scc; |
| private long bucket; |
| private Serde<Window> windowSerde; |
| private Serde<T> valueSerde; |
| |
| protected Spillable.SpillableMap<Window, T> windowToDataMap; |
| |
| public SpillableWindowedPlainStorage() |
| { |
| } |
| |
| public SpillableWindowedPlainStorage(long bucket, Serde<Window> windowSerde, Serde<T> valueSerde) |
| { |
| this.bucket = bucket; |
| this.windowSerde = windowSerde; |
| this.valueSerde = valueSerde; |
| } |
| |
| public void setSpillableComplexComponent(SpillableComplexComponent scc) |
| { |
| this.scc = scc; |
| } |
| |
| public SpillableComplexComponent getSpillableComplexComponent() |
| { |
| return scc; |
| } |
| |
| public void setBucket(long bucket) |
| { |
| this.bucket = bucket; |
| } |
| |
| public void setWindowSerde(Serde<Window> windowSerde) |
| { |
| this.windowSerde = windowSerde; |
| } |
| |
| public void setValueSerde(Serde<T> valueSerde) |
| { |
| this.valueSerde = valueSerde; |
| } |
| |
| @Override |
| public void put(Window window, T value) |
| { |
| windowToDataMap.put(window, value); |
| } |
| |
| @Override |
| public T get(Window window) |
| { |
| return windowToDataMap.get(window); |
| } |
| |
| @Override |
| public Iterable<Map.Entry<Window, T>> entries() |
| { |
| return windowToDataMap.entrySet(); |
| } |
| |
| @Override |
| public boolean containsWindow(Window window) |
| { |
| return windowToDataMap.containsKey(window); |
| } |
| |
| @Override |
| public long size() |
| { |
| return windowToDataMap.size(); |
| } |
| |
| @Override |
| public void remove(Window window) |
| { |
| windowToDataMap.remove(window); |
| } |
| |
| @Override |
| public void setup(Context.OperatorContext context) |
| { |
| if (bucket == 0) { |
| // choose a bucket that is almost guaranteed to be unique |
| bucket = (context.getValue(Context.DAGContext.APPLICATION_NAME) + "#" + context.getId()).hashCode(); |
| } |
| // set default serdes |
| if (windowSerde == null) { |
| windowSerde = new GenericSerde<>(); |
| } |
| if (valueSerde == null) { |
| valueSerde = new GenericSerde<>(); |
| } |
| if (windowToDataMap == null) { |
| windowToDataMap = scc.newSpillableMap(windowSerde, valueSerde, new WindowTimeExtractor()); |
| } |
| } |
| |
| @Override |
| public void teardown() |
| { |
| } |
| } |