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.runners.core.triggers;
  
  import java.util.Set;
  import org.apache.beam.vendor.guava.v32_1_2_jre.com.google.common.collect.Sets;
  
  /** An implementation of {@link FinishedTriggers} atop a user-provided mutable {@link Set}. */
  public class FinishedTriggersSet implements FinishedTriggers {
  
    private final Set<ExecutableTriggerStateMachine> finishedTriggers;
  
    private FinishedTriggersSet(Set<ExecutableTriggerStateMachine> finishedTriggers) {
      this.finishedTriggers = finishedTriggers;
    }
  
    public static FinishedTriggersSet fromSet(Set<ExecutableTriggerStateMachine> finishedTriggers) {
      return new FinishedTriggersSet(finishedTriggers);
    }
  
    /** Returns a mutable {@link Set} of the underlying triggers that are finished. */
    public Set<ExecutableTriggerStateMachine> getFinishedTriggers() {
      return finishedTriggers;
    }
  
    @Override
    public boolean isFinished(ExecutableTriggerStateMachine trigger) {
      return finishedTriggers.contains(trigger);
    }
  
    @Override
    public void setFinished(ExecutableTriggerStateMachine trigger, boolean value) {
      if (value) {
        finishedTriggers.add(trigger);
      } else {
        finishedTriggers.remove(trigger);
      }
    }
  
    @Override
    public void clearRecursively(ExecutableTriggerStateMachine trigger) {
      finishedTriggers.remove(trigger);
      for (ExecutableTriggerStateMachine subTrigger : trigger.subTriggers()) {
        clearRecursively(subTrigger);
      }
    }
  
    @Override
    public FinishedTriggersSet copy() {
      return fromSet(Sets.newHashSet(finishedTriggers));
    }
  }
  