public static IPropagatorBlock <SplitJoinItem <TParent, TItem>, SplitJoinResult <TParent, TItem> > CreateJoinBlock <TParent, TItem> ()
{
var intermediate_results = new Dictionary <TParent, SplitJoinIntermediateResult <TItem> > ();
var block = new TransformManyBlock <SplitJoinItem <TParent, TItem>, SplitJoinResult <TParent, TItem> >
(x =>
{
if (x.Result == null)
{
x.CompletedSuccessfully();
}
SplitJoinIntermediateResult <TItem> intermediate_result;
if (!intermediate_results.TryGetValue(x.Parent, out intermediate_result))
{
intermediate_result = new SplitJoinIntermediateResult <TItem> (x.TotalItemsCount);
intermediate_results[x.Parent] = intermediate_result;
}
if (intermediate_result.Completed(x))
{
var split_join_result = new SplitJoinResult <TParent, TItem> (x.Parent, intermediate_result);
return(new[] { split_join_result });
}
return(new SplitJoinResult <TParent, TItem> [0]);
},
new ExecutionDataflowBlockOptions
{
BoundedCapacity = DataflowBlockOptions.Unbounded,
MaxDegreeOfParallelism = 1
});
return(block);
}
public static IPropagatorBlock <SplitJoinItem <TParent, TItem>, TOutput> CreateJoinBlockAsync <TParent, TItem, TOutput>
([NotNull] Func <SplitJoinResult <TParent, TItem>, Task <TOutput> > process,
Action <Exception, SplitJoinResult <TParent, TItem> > defaultExceptionLogger = null)
{
if (process == null)
{
throw new ArgumentNullException(nameof(process));
}
var intermediate_results = new Dictionary <TParent, SplitJoinIntermediateResult <TItem> > ();
var block = new TransformManyBlock <SplitJoinItem <TParent, TItem>, TOutput>
(async x =>
{
if (x.Result == null)
{
x.CompletedSuccessfully();
}
SplitJoinIntermediateResult <TItem> intermediate_result;
if (!intermediate_results.TryGetValue(x.Parent, out intermediate_result))
{
intermediate_result = new SplitJoinIntermediateResult <TItem> (x.TotalItemsCount);
intermediate_results[x.Parent] = intermediate_result;
}
if (intermediate_result.Completed(x))
{
var split_join_result = new SplitJoinResult <TParent, TItem> (x.Parent, intermediate_result);
try
{
var result = await process(split_join_result).ConfigureAwait(false);
return(new[] { result });
}
catch (Exception ex)
{
var logger = x.Parent as IDataflowErrorLogger;
if (logger != null)
{
logger.OnException(ex);
}
else if (defaultExceptionLogger != null)
{
defaultExceptionLogger(ex, split_join_result);
}
}
}
return(new TOutput[0]);
},
new ExecutionDataflowBlockOptions
{
BoundedCapacity = DataflowBlockOptions.Unbounded,
MaxDegreeOfParallelism = 1
});
return(block);
}
public static ITargetBlock <SplitJoinItem <TParent, TItem> > CreateFinalJoinBlock <TParent, TItem> (
[NotNull] Action <SplitJoinResult <TParent, TItem> > process,
Action <Exception, SplitJoinResult <TParent, TItem> > defaultExceptionLogger = null)
{
if (process == null)
{
throw new ArgumentNullException(nameof(process));
}
var intermediate_results = new Dictionary <TParent, SplitJoinIntermediateResult <TItem> > ();
var block = new ActionBlock <SplitJoinItem <TParent, TItem> >
(x =>
{
if (x.Result == null)
{
x.CompletedSuccessfully();
}
SplitJoinIntermediateResult <TItem> intermediate_result;
if (!intermediate_results.TryGetValue(x.Parent, out intermediate_result))
{
intermediate_result = new SplitJoinIntermediateResult <TItem> (x.TotalItemsCount);
intermediate_results[x.Parent] = intermediate_result;
}
if (intermediate_result.Completed(x))
{
var split_join_result = new SplitJoinResult <TParent, TItem> (x.Parent, intermediate_result);
try
{
process(split_join_result);
}
catch (Exception ex)
{
var logger = x.Parent as IDataflowErrorLogger;
if (logger != null)
{
logger.OnException(ex);
}
else if (defaultExceptionLogger != null)
{
defaultExceptionLogger(ex, split_join_result);
}
}
}
},
new ExecutionDataflowBlockOptions
{
BoundedCapacity = DataflowBlockOptions.Unbounded,
MaxDegreeOfParallelism = 1
});
return(block);
}
