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

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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.

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/*
 * 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.common.collect.Sets;

import java.util.Set;

/**
 * An implementation of {@link FinishedTriggers} atop a user-provided mutable {@link Set}.
 */
public class FinishedTriggersSet implements FinishedTriggers {

  private final Set> finishedTriggers;

  private FinishedTriggersSet(Set> finishedTriggers) {
    this.finishedTriggers = finishedTriggers;
  }

  public static FinishedTriggersSet fromSet(Set> finishedTriggers) {
    return new FinishedTriggersSet(finishedTriggers);
  }

  /**
   * Returns a mutable {@link Set} of the underlying triggers that are finished.
   */
  public Set> getFinishedTriggers() {
    return finishedTriggers;
  }

  @Override
  public boolean isFinished(ExecutableTrigger trigger) {
    return finishedTriggers.contains(trigger);
  }

  @Override
  public void setFinished(ExecutableTrigger trigger, boolean value) {
    if (value) {
      finishedTriggers.add(trigger);
    } else {
      finishedTriggers.remove(trigger);
    }
  }

  @Override
  public void clearRecursively(ExecutableTrigger trigger) {
    finishedTriggers.remove(trigger);
    for (ExecutableTrigger subTrigger : trigger.subTriggers()) {
      clearRecursively(subTrigger);
    }
  }

  @Override
  public FinishedTriggersSet copy() {
    return fromSet(Sets.newHashSet(finishedTriggers));
  }

}