StopOnErrorCallable.java

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 * Pentaho Data Integration
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 * Copyright (C) 2002-2016 by Pentaho : http://www.pentaho.com
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 * 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
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 *    http://www.apache.org/licenses/LICENSE-2.0
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package org.pentaho.di.concurrency;

import java.util.concurrent.Callable;
import java.util.concurrent.atomic.AtomicBoolean;

/**
 * A convenient class to derive from as it takes care of handling crashes during execution of callable
 *
 * @author Andrey Khayrutdinov
 */
abstract class StopOnErrorCallable<T> implements Callable<T> {

  final AtomicBoolean condition;

  StopOnErrorCallable( AtomicBoolean condition ) {
    this.condition = condition;
  }

  @Override
  public T call() throws Exception {
    try {
      return doCall();
    } catch ( Exception e ) {
      condition.set( false );
      throw e;
    }
  }

  abstract T doCall() throws Exception;
}