com.twitter.heron.api.windowing.TupleWindowImpl Maven / Gradle / Ivy

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// Copyright 2017 Twitter. 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.

/**
 * 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.twitter.heron.api.windowing;

import java.util.List;

import com.twitter.heron.api.tuple.Tuple;

/**
 * Holds the expired, new and current tuples in a window.
 */
public class TupleWindowImpl implements TupleWindow {
  private final List tuples;
  private final List newTuples;
  private final List expiredTuples;
  private final Long startTimestamp;
  private final Long endTimestamp;

  public TupleWindowImpl(List tuples, List newTuples, List expiredTuples,
                         Long startTimestamp, Long endTimestamp) {
    this.tuples = tuples;
    this.newTuples = newTuples;
    this.expiredTuples = expiredTuples;
    this.startTimestamp = startTimestamp;
    this.endTimestamp = endTimestamp;
  }

  @Override
  public List get() {
    return tuples;
  }

  @Override
  public List getNew() {
    return newTuples;
  }

  @Override
  public List getExpired() {
    return expiredTuples;
  }

  @Override
  public Long getStartTimestamp() {
    return startTimestamp;
  }

  @Override
  public Long getEndTimestamp() {
    return endTimestamp;
  }

  @Override
  public String toString() {
    return "TupleWindowImpl{" + "tuples=" + tuples + ", newTuples=" + newTuples + ", expiredTuples="
        + expiredTuples + '}';
  }

  @Override
  public boolean equals(Object o) {
    if (this == o) {
      return true;
    }
    if (o == null || getClass() != o.getClass()) {
      return false;
    }

    TupleWindowImpl that = (TupleWindowImpl) o;

    if (tuples != null ? !tuples.equals(that.tuples) : that.tuples != null) {
      return false;
    }
    if (newTuples != null ? !newTuples.equals(that.newTuples) : that.newTuples != null) {
      return false;
    }
    return expiredTuples != null ? expiredTuples.equals(that.expiredTuples)
        : that.expiredTuples == null;

  }

  @Override
  public int hashCode() {
    int result = tuples != null ? tuples.hashCode() : 0;
    result = 31 * result + (newTuples != null ? newTuples.hashCode() : 0);
    result = 31 * result + (expiredTuples != null ? expiredTuples.hashCode() : 0);
    return result;
  }
}