#region License Information
/* HeuristicLab
 * Copyright (C) 2002-2010 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
 *
 * This file is part of HeuristicLab.
 *
 * HeuristicLab is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * HeuristicLab is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
 */
#endregion

using System;
using System.Collections.Generic;
using HeuristicLab.Core;
using HeuristicLab.Common;

namespace HeuristicLab.Hive {
  public interface IJob : INamedItem {
    TimeSpan ExecutionTime { get; }

    ExecutionState ExecutionState { get; }
    
    /// <summary>
    /// indicates wether it is possible to create childjobs from this job
    /// </summary>
    bool IsParallelizable { get; }

    /// <summary>
    /// Configuration to indicate if this job should create child-jobs which will be executed in hive
    /// Cannot be set true if IsParallelizable is false
    /// </summary>
    bool ComputeInParallel { get; set; }
    event EventHandler ComputeInParallelChanged;

    void Run();
    void Prepare();
    void Start();
    void Stop();
    void Resume(IEnumerable<IJob> childJobs);

    event EventHandler JobStopped;
    event EventHandler JobFailed;

    /// <summary>
    /// When this event occurs the job wants to sleep until all his child jobs are finished
    /// </summary>
    event EventHandler WaitForChildJobs;

    /// <summary>
    /// This event will be fired when the job wants to have a child-job to be computed
    /// </summary>
    event EventHandler<EventArgs<IJob>> NewChildJob;

    /// <summary>
    /// Will be fired when job wants all child-jobs to be deleted from hive
    /// </summary>
    event EventHandler DeleteChildJobs;
    
    /// <summary>
    /// If this is set to true, the job should be Resumed with the child-jobs attatched instead of Started
    /// </summary>
    bool CollectChildJobs { get; set; }
  }
}