//---------------------------------------------------------------------------------------
// Executes the query and returns the results in an array.
//
internal TOutput[] ExecuteAndGetResultsAsArray()
{
QuerySettings querySettings =
SpecifiedQuerySettings
.WithPerExecutionSettings()
.WithDefaults();
QueryLifecycle.LogicalQueryExecutionBegin(querySettings.QueryId);
try
{
Debug.Assert(querySettings.ExecutionMode != null);
if (querySettings.ExecutionMode.Value == ParallelExecutionMode.Default && LimitsParallelism)
{
IEnumerable <TOutput> opSequential = AsSequentialQuery(querySettings.CancellationState.ExternalCancellationToken);
IEnumerable <TOutput> opSequentialWithCancelChecks = CancellableEnumerable.Wrap(opSequential, querySettings.CancellationState.ExternalCancellationToken);
return(ExceptionAggregator.WrapEnumerable(opSequentialWithCancelChecks, querySettings.CancellationState).ToArray());
}
QueryResults <TOutput> results = GetQueryResults(querySettings);
// Top-level preemptive cancellation test.
// This handles situations where cancellation has occurred before execution commences
// The handling for in-execution occurs in QueryTaskGroupState.QueryEnd()
if (querySettings.CancellationState.MergedCancellationToken.IsCancellationRequested)
{
querySettings.CancellationState.ExternalCancellationToken.ThrowIfCancellationRequested();
throw new OperationCanceledException();
}
if (results.IsIndexible && OutputOrdered)
{
// The special array-based merge performs better if the output is ordered, because
// it does not have to pay for ordering. In the unordered case, we it appears that
// the stop-and-go merge performs a little better.
ArrayMergeHelper <TOutput> merger = new ArrayMergeHelper <TOutput>(SpecifiedQuerySettings, results);
merger.Execute();
TOutput[] output = merger.GetResultsAsArray();
querySettings.CleanStateAtQueryEnd();
return(output);
}
else
{
Debug.Assert(querySettings.TaskScheduler != null);
PartitionedStreamMerger <TOutput> merger =
new PartitionedStreamMerger <TOutput>(false, ParallelMergeOptions.FullyBuffered, querySettings.TaskScheduler,
OutputOrdered, querySettings.CancellationState, querySettings.QueryId);
results.GivePartitionedStream(merger);
Debug.Assert(merger.MergeExecutor != null);
TOutput[]? output = merger.MergeExecutor.GetResultsAsArray();
querySettings.CleanStateAtQueryEnd();
Debug.Assert(output != null);
return(output);
}
}
finally
{
QueryLifecycle.LogicalQueryExecutionEnd(querySettings.QueryId);
}
}
internal TOutput[] ExecuteAndGetResultsAsArray()
{
TOutput[] localArray3;
QuerySettings querySettings = base.SpecifiedQuerySettings.WithPerExecutionSettings().WithDefaults();
QueryLifecycle.LogicalQueryExecutionBegin(querySettings.QueryId);
try
{
if ((((ParallelExecutionMode)querySettings.ExecutionMode.Value) == ParallelExecutionMode.Default) && this.LimitsParallelism)
{
IEnumerable <TOutput> source = this.AsSequentialQuery(querySettings.CancellationState.ExternalCancellationToken);
IEnumerable <TOutput> introduced13 = CancellableEnumerable.Wrap <TOutput>(source, querySettings.CancellationState.ExternalCancellationToken);
return(ExceptionAggregator.WrapEnumerable <TOutput>(introduced13, querySettings.CancellationState).ToArray <TOutput>());
}
QueryResults <TOutput> queryResults = this.GetQueryResults(querySettings);
if (queryResults.IsIndexible && this.OutputOrdered)
{
ArrayMergeHelper <TOutput> helper = new ArrayMergeHelper <TOutput>(base.SpecifiedQuerySettings, queryResults);
helper.Execute();
TOutput[] localArray = helper.GetResultsAsArray();
querySettings.CleanStateAtQueryEnd();
return(localArray);
}
PartitionedStreamMerger <TOutput> recipient = new PartitionedStreamMerger <TOutput>(false, ParallelMergeOptions.FullyBuffered, querySettings.TaskScheduler, this.OutputOrdered, querySettings.CancellationState, querySettings.QueryId);
queryResults.GivePartitionedStream(recipient);
TOutput[] resultsAsArray = recipient.MergeExecutor.GetResultsAsArray();
querySettings.CleanStateAtQueryEnd();
localArray3 = resultsAsArray;
}
finally
{
QueryLifecycle.LogicalQueryExecutionEnd(querySettings.QueryId);
}
return(localArray3);
}
//---------------------------------------------------------------------------------------
// Executes the query and returns the results in an array.
//
internal TOutput[] ExecuteAndGetResultsAsArray()
{
QuerySettings querySettings =
SpecifiedQuerySettings
.WithPerExecutionSettings()
.WithDefaults();
QueryLifecycle.LogicalQueryExecutionBegin(querySettings.QueryId);
try
{
if (querySettings.ExecutionMode.Value == ParallelExecutionMode.Default && LimitsParallelism)
{
IEnumerable <TOutput> opSequential = AsSequentialQuery(querySettings.CancellationState.ExternalCancellationToken);
IEnumerable <TOutput> opSequentialWithCancelChecks = CancellableEnumerable.Wrap(opSequential, querySettings.CancellationState.ExternalCancellationToken);
return(ExceptionAggregator.WrapEnumerable(opSequentialWithCancelChecks, querySettings.CancellationState).ToArray());
}
QueryResults <TOutput> results = GetQueryResults(querySettings);
if (results.IsIndexible && OutputOrdered)
{
// The special array-based merge performs better if the output is ordered, because
// it does not have to pay for ordering. In the unordered case, we it appears that
// the stop-and-go merge performs a little better.
ArrayMergeHelper <TOutput> merger = new ArrayMergeHelper <TOutput>(SpecifiedQuerySettings, results);
merger.Execute();
TOutput[] output = merger.GetResultsAsArray();
querySettings.CleanStateAtQueryEnd();
return(output);
}
else
{
PartitionedStreamMerger <TOutput> merger =
new PartitionedStreamMerger <TOutput>(false, ParallelMergeOptions.FullyBuffered, querySettings.TaskScheduler,
OutputOrdered, querySettings.CancellationState, querySettings.QueryId);
results.GivePartitionedStream(merger);
TOutput[] output = merger.MergeExecutor.GetResultsAsArray();
querySettings.CleanStateAtQueryEnd();
return(output);
}
}
finally
{
QueryLifecycle.LogicalQueryExecutionEnd(querySettings.QueryId);
}
}
