/// <summary>
/// 执行批量操作
/// </summary>
/// <typeparam name="T">批量操作项类型</typeparam>
/// <param name="request">执行批量操作请求数据列表</param>
/// <param name="doAction">需要对每个数据项执行的操作</param>
/// <param name="exceptionHandler">异常处理器</param>
/// <returns>批量操作结果</returns>
private static BatchActionResult <T> InnerDoGroupBatchAction <T>(IEnumerable <IGrouping <int, BatchActionItem <T> > > request,
Action <T> doAction, Action <Exception> exceptionHandler)
{
if (request == null || request.Count() == 0)
{
return(new BatchActionResult <T>(0));
}
var result = new BatchActionResult <T>(request.SelectMany(s => s).Count());
//取得主线程的ServiceContext
var currentContext = ServiceContext.Current;
List <Task> tasks = new List <Task>();
request.ForEach(group =>
{
var g = group;
//为每一个组开启一个新的线程，减少线程数量。
var task = Task.Factory.StartNew(c =>
{
//将主线程的ServiceContext附加到当前的ServiceContext
ServiceContext.Current.Attach((IContext)c);
g.ForEach(item =>
{
try
{
doAction(item.Data);
lock (result.SuccessList)
{
result.SuccessList.Add(item);
}
}
catch (Exception exp)
{
lock (result.FaultList)
{
result.FaultList.Add(new FaultTask <BatchActionItem <T> >(item, exp));
}
if (exceptionHandler != null)
{
exceptionHandler(exp);
}
}
});
}, currentContext);
tasks.Add(task);
});
//阻塞，直到所有任务完成
Task.WaitAll(tasks.ToArray());
return(result);
}
/// <summary>
/// 执行批量操作
/// </summary>
/// <typeparam name="T">批量操作项类型</typeparam>
/// <param name="request">执行批量操作请求数据列表</param>
/// <param name="doAction">需要对每个数据项执行的操作</param>
/// <param name="exceptionHandler">异常处理器</param>
/// <returns>批量操作结果</returns>
public static BatchActionResult <T> DoBatchAction <T>(List <BatchActionItem <T> > request,
Action <T> doAction, Action <Exception> exceptionHandler)
{
if (request == null || request.Count == 0)
{
return(new BatchActionResult <T>(0));
}
var result = new BatchActionResult <T>(request.Count);
//取得主线程的ServiceContext
var currentContext = ServiceContext.Current;
List <Task> tasks = new List <Task>();
request.ForEach(r =>
{
var item = r;
var task = Task.Factory.StartNew(c =>
{
try
{
//将主线程的ServiceContext附加到当前的ServiceContext
ServiceContext.Current.Attach((IContext)c);
doAction(item.Data);
lock (result.SuccessList)
{
result.SuccessList.Add(item);
}
}
catch (Exception exp)
{
lock (result.FaultList)
{
result.FaultList.Add(new FaultTask <BatchActionItem <T> >(item, exp));
}
if (exceptionHandler != null)
{
exceptionHandler(exp);
}
}
}, currentContext);
tasks.Add(task);
});
//阻塞，直到所有任务完成
Task.WaitAll(tasks.ToArray());
return(result);
}