SimpleThreadPoolTaskExecutor.cs :  » Inversion-of-Control-Dependency-Injection » Spring.net » Spring » Scheduling » Quartz » C# / CSharp Open Source

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C# / CSharp Open Source » Inversion of Control Dependency Injection » Spring.net 
Spring.net » Spring » Scheduling » Quartz » SimpleThreadPoolTaskExecutor.cs
/*
* Copyright 2002-2006 the original author or authors.
*
* 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.
*/
using System;
using System.Threading;

using Quartz;
using Quartz.Simpl;
using Spring.Objects.Factory;

namespace Spring.Scheduling.Quartz{
  /// <summary> 
  /// Subclass of Quartz's SimpleThreadPool that implements Spring's
  /// TaskExecutor interface and listens to Spring lifecycle callbacks.
  /// </summary>
  /// <author>Juergen Hoeller</author>
  /// <seealso cref="SimpleThreadPool" />
  /// <seealso cref="ITaskExecutor" />
  /// <seealso cref="SchedulerFactoryObject.TaskExecutor" />
  public class SimpleThreadPoolTaskExecutor : SimpleThreadPool, ISchedulingTaskExecutor, IInitializingObject, IDisposable
  {
    private bool waitForJobsToCompleteOnShutdown = false;

    /// <summary>
    /// Set whether to wait for running jobs to complete on Shutdown.
    /// Default is "false".
    /// </summary>
    /// <value>
    ///   <c>true</c> if [wait for jobs to complete on shutdown]; otherwise, <c>false</c>.
    /// </value>
    /// <seealso cref="SimpleThreadPool.Shutdown(bool)"/>
    public virtual bool WaitForJobsToCompleteOnShutdown
    {
      set { waitForJobsToCompleteOnShutdown = value; }
    }

        /// <summary>
        /// Invoked by an <see cref="Spring.Objects.Factory.IObjectFactory"/>
        /// after it has injected all of an object's dependencies.
        /// </summary>
        /// <remarks>
        ///   <p>
        /// This method allows the object instance to perform the kind of
        /// initialization only possible when all of it's dependencies have
        /// been injected (set), and to throw an appropriate exception in the
        /// event of misconfiguration.
        /// </p>
        ///   <p>
        /// Please do consult the class level documentation for the
        /// <see cref="Spring.Objects.Factory.IObjectFactory"/> interface for a
        /// description of exactly <i>when</i> this method is invoked. In
        /// particular, it is worth noting that the
        /// <see cref="Spring.Objects.Factory.IObjectFactoryAware"/>
        /// and <see cref="Spring.Context.IApplicationContextAware"/>
        /// callbacks will have been invoked <i>prior</i> to this method being
        /// called.
        /// </p>
        /// </remarks>
        /// <exception cref="System.Exception">
        /// In the event of misconfiguration (such as the failure to set a
        /// required property) or if initialization fails.
        /// </exception>
    public virtual void AfterPropertiesSet()
    {
      Initialize();
    }

        /// <summary>
        /// Executes the specified task.
        /// </summary>
        /// <param name="task">The task.</param>
    public virtual void Execute(ThreadStart task)
    {
      if (task == null)
      {
        throw new ArgumentException("Runnable must not be null", "task");
      }
      if (!RunInThread(new ThreadRunnableDelegate(task)))
      {
        throw new SchedulingException("Quartz SimpleThreadPool already shut down");
      }
    }

    /// <summary> This task executor prefers short-lived work units.</summary>
    public virtual bool PrefersShortLivedTasks
    {
      get { return true; }
    }

        /// <summary>
        /// Performs application-defined tasks associated with freeing, releasing, or resetting unmanaged resources.
        /// </summary>
    public virtual void Dispose()
    {
      Shutdown(waitForJobsToCompleteOnShutdown);
    }

        internal class ThreadRunnableDelegate : IThreadRunnable
        {
            private ThreadStart ts;


            public ThreadRunnableDelegate(ThreadStart ts)
            {
                this.ts = ts;
            }

            public void Run()
            {
                ts.Invoke();
            }
        }
  }
}
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