KeyedWindow.java

/**
 * Copyright 2016-2017 Seznam.cz, a.s.
 *
 * 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 cz.seznam.euphoria.inmem;

import cz.seznam.euphoria.core.client.dataset.windowing.Window;

import java.util.Objects;

public final class KeyedWindow<W extends Window, K> {
  private final W window;
  private final K key;

  KeyedWindow(W window, K key) {
    this.window = Objects.requireNonNull(window);
    this.key = key;
  }

  public W window() {
    return window;
  }

  public K key() {
    return key;
  }

  @Override
  public boolean equals(Object o) {
    if (o instanceof KeyedWindow) {
      KeyedWindow other = (KeyedWindow) o;
      return window.equals(other.window) && Objects.equals(key, other.key);
    }
    return false;
  }

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

  @Override
  public String toString() {
    return "KeyedWindow{" +
        "window=" + window +
        ", key=" + key +
        '}';
  }
}