public static TryCatch <IQueryPipelineStage> MonadicCreate(
CosmosElement requestContinuation,
CancellationToken cancellationToken,
MonadicCreatePipelineStage monadicCreatePipelineStage,
IReadOnlyDictionary <string, AggregateOperator?> groupByAliasToAggregateType,
IReadOnlyList <string> orderedAliases,
bool hasSelectValue,
int pageSize)
{
TryCatch <GroupingTable> tryCreateGroupingTable = GroupingTable.TryCreateFromContinuationToken(
groupByAliasToAggregateType,
orderedAliases,
hasSelectValue,
continuationToken: null);
if (tryCreateGroupingTable.Failed)
{
return(TryCatch <IQueryPipelineStage> .FromException(tryCreateGroupingTable.Exception));
}
TryCatch <IQueryPipelineStage> tryCreateSource = monadicCreatePipelineStage(requestContinuation, cancellationToken);
if (tryCreateSource.Failed)
{
return(tryCreateSource);
}
IQueryPipelineStage stage = new ClientGroupByQueryPipelineStage(
tryCreateSource.Result,
cancellationToken,
tryCreateGroupingTable.Result,
pageSize);
return(TryCatch <IQueryPipelineStage> .FromResult(stage));
}
public static async Task <TryCatch <IDocumentQueryExecutionComponent> > TryCreateAsync(
CosmosElement requestContinuation,
Func <CosmosElement, Task <TryCatch <IDocumentQueryExecutionComponent> > > tryCreateSource,
IReadOnlyDictionary <string, AggregateOperator?> groupByAliasToAggregateType,
IReadOnlyList <string> orderedAliases,
bool hasSelectValue)
{
TryCatch <GroupingTable> tryCreateGroupingTable = GroupingTable.TryCreateFromContinuationToken(
groupByAliasToAggregateType,
orderedAliases,
hasSelectValue,
continuationToken: null);
if (!tryCreateGroupingTable.Succeeded)
{
return(TryCatch <IDocumentQueryExecutionComponent> .FromException(tryCreateGroupingTable.Exception));
}
return((await tryCreateSource(requestContinuation)).Try <IDocumentQueryExecutionComponent>(source =>
{
return new ClientGroupByDocumentQueryExecutionComponent(
source,
tryCreateGroupingTable.Result);
}));
}
public static async Task <TryCatch <IDocumentQueryExecutionComponent> > TryCreateAsync(
string requestContinuation,
Func <string, Task <TryCatch <IDocumentQueryExecutionComponent> > > tryCreateSourceAsync,
IReadOnlyDictionary <string, AggregateOperator?> groupByAliasToAggregateType,
IReadOnlyList <string> orderedAliases,
bool hasSelectValue)
{
GroupByContinuationToken groupByContinuationToken;
if (requestContinuation != null)
{
if (!GroupByContinuationToken.TryParse(requestContinuation, out groupByContinuationToken))
{
return(TryCatch <IDocumentQueryExecutionComponent> .FromException(
new MalformedContinuationTokenException($"Invalid {nameof(GroupByContinuationToken)}: '{requestContinuation}'")));
}
}
else
{
groupByContinuationToken = new GroupByContinuationToken(
groupingTableContinuationToken: null,
sourceContinuationToken: null);
}
TryCatch <IDocumentQueryExecutionComponent> tryCreateSource;
if (groupByContinuationToken.SourceContinuationToken == ComputeGroupByDocumentQueryExecutionComponent.DoneReadingGroupingsContinuationToken)
{
tryCreateSource = TryCatch <IDocumentQueryExecutionComponent> .FromResult(DoneDocumentQueryExecutionComponent.Value);
}
else
{
tryCreateSource = await tryCreateSourceAsync(groupByContinuationToken.SourceContinuationToken);
}
if (!tryCreateSource.Succeeded)
{
return(TryCatch <IDocumentQueryExecutionComponent> .FromException(tryCreateSource.Exception));
}
TryCatch <GroupingTable> tryCreateGroupingTable = GroupingTable.TryCreateFromContinuationToken(
groupByAliasToAggregateType,
orderedAliases,
hasSelectValue,
groupByContinuationToken.GroupingTableContinuationToken);
if (!tryCreateGroupingTable.Succeeded)
{
return(TryCatch <IDocumentQueryExecutionComponent> .FromException(tryCreateGroupingTable.Exception));
}
return(TryCatch <IDocumentQueryExecutionComponent> .FromResult(
new ComputeGroupByDocumentQueryExecutionComponent(
tryCreateSource.Result,
tryCreateGroupingTable.Result)));
}
