com.google.cloud.dataflow.sdk.util.DoFnInfo Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of google-cloud-dataflow-java-sdk-all Show documentation

Google Cloud Dataflow Java SDK provides a simple, Java-based interface for processing virtually any size data using Google cloud resources. This artifact includes entire Dataflow Java SDK.

There is a newer version: 2.5.0

Show newest version

/*
 * Copyright (C) 2015 Google Inc.
 *
 * 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.google.cloud.dataflow.sdk.util;

import com.google.cloud.dataflow.sdk.coders.Coder;
import com.google.cloud.dataflow.sdk.transforms.DoFn;
import com.google.cloud.dataflow.sdk.values.PCollectionView;

import java.io.Serializable;

/**
 * Wrapper class holding the necessary information to serialize a DoFn.
 *
 * @param  the type of the (main) input elements of the DoFn
 * @param  the type of the (main) output elements of the DoFn
 */
public class DoFnInfo implements Serializable {
  private final DoFn doFn;
  private final WindowingStrategy windowingStrategy;
  private final Iterable> sideInputViews;
  private final Coder inputCoder;

  public DoFnInfo(DoFn doFn, WindowingStrategy windowingStrategy) {
    this.doFn = doFn;
    this.windowingStrategy = windowingStrategy;
    this.sideInputViews = null;
    this.inputCoder = null;
  }

  public DoFnInfo(DoFn doFn, WindowingStrategy windowingStrategy,
                  Iterable> sideInputViews, Coder inputCoder) {
    this.doFn = doFn;
    this.windowingStrategy = windowingStrategy;
    this.sideInputViews = sideInputViews;
    this.inputCoder = inputCoder;
  }

  public DoFn getDoFn() {
    return doFn;
  }

  public WindowingStrategy getWindowingStrategy() {
    return windowingStrategy;
  }

  public Iterable> getSideInputViews() {
    return sideInputViews;
  }

  public Coder getInputCoder() {
    return inputCoder;
  }
}