content: /*
   * 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.beam.sdk.values;
  
  import java.util.Collection;
  import org.apache.beam.sdk.transforms.windowing.BoundedWindow;
  import org.apache.beam.sdk.transforms.windowing.PaneInfo;
  import org.checkerframework.checker.nullness.qual.Nullable;
  import org.checkerframework.dataflow.qual.Pure;
  import org.joda.time.Instant;
  
  /**
   * A value along with Beam's windowing information and all other metadata.
   *
   * @param <T> the type of the primary data for the value.
   */
  public interface WindowedValue<T> {
    /** The primary data for this value. */
    @Pure
    T getValue();
  
    /** The timestamp of this value in event time. */
    @Pure
    Instant getTimestamp();
  
    /** Returns the windows of this {@code WindowedValue}. */
    @Pure
    Collection<? extends BoundedWindow> getWindows();
  
    /** The {@link PaneInfo} associated with this WindowedValue. */
    @Pure
    PaneInfo getPaneInfo();
  
    @Nullable
    String getRecordId();
  
    @Nullable
    Long getRecordOffset();
  
    /**
     * A representation of each of the actual values represented by this compressed {@link
     * WindowedValue}, one per window.
     */
    @Pure
    Iterable<? extends WindowedValue<T>> explodeWindows();
  
    /**
     * A {@link WindowedValue} with identical metadata to the current one, but with the provided
     * value.
     */
    @Pure
    <OtherT> WindowedValue<OtherT> withValue(OtherT value);
  }
  