public override Task <IAsyncCursor <TResult> > MapReduceAsync <TResult>(BsonJavaScript map, BsonJavaScript reduce, MapReduceOptions <TDocument, TResult> options = null, CancellationToken cancellationToken = default(CancellationToken))
{
options = options ?? new MapReduceOptions <TDocument, TResult>();
options.Filter = CombineFilters(options.Filter);
return(_wrappedCollection.MapReduceAsync(map, reduce, options, cancellationToken));
}
public abstract Task <IAsyncCursor <TResult> > MapReduceAsync <TResult>(BsonJavaScript map, BsonJavaScript reduce, MapReduceOptions <TDocument, TResult> options = null, CancellationToken cancellationToken = default(CancellationToken));
public virtual Task <IAsyncCursor <TResult> > MapReduceAsync <TResult>(IClientSessionHandle session, BsonJavaScript map, BsonJavaScript reduce, MapReduceOptions <TDocument, TResult> options = null, CancellationToken cancellationToken = default(CancellationToken))
{
throw new NotImplementedException();
}
private FindOperation <TResult> CreateMapReduceOutputToCollectionFindOperation <TResult>(MapReduceOptions <TDocument, TResult> options, CollectionNamespace outputCollectionNamespace, IBsonSerializer <TResult> resultSerializer)
{
return(new FindOperation <TResult>(
outputCollectionNamespace,
resultSerializer,
_messageEncoderSettings)
{
MaxTime = options.MaxTime,
ReadConcern = _settings.ReadConcern
});
}
public virtual IAsyncCursor <TResult> MapReduce <TResult>(BsonJavaScript map, BsonJavaScript reduce, MapReduceOptions <TDocument, TResult> options = null, CancellationToken cancellationToken = default(CancellationToken))
{
throw new NotImplementedException();
}
private MapReduceOutputToCollectionOperation CreateMapReduceOutputToCollectionOperation <TResult>(BsonJavaScript map, BsonJavaScript reduce, MapReduceOptions <TDocument, TResult> options, MapReduceOutputOptions outputOptions)
{
var collectionOutputOptions = (MapReduceOutputOptions.CollectionOutput)outputOptions;
var databaseNamespace = collectionOutputOptions.DatabaseName == null ?
_collectionNamespace.DatabaseNamespace :
new DatabaseNamespace(collectionOutputOptions.DatabaseName);
var outputCollectionNamespace = new CollectionNamespace(databaseNamespace, collectionOutputOptions.CollectionName);
return(new MapReduceOutputToCollectionOperation(
_collectionNamespace,
outputCollectionNamespace,
map,
reduce,
_messageEncoderSettings)
{
BypassDocumentValidation = options.BypassDocumentValidation,
Filter = options.Filter == null ? null : options.Filter.Render(_documentSerializer, _settings.SerializerRegistry),
FinalizeFunction = options.Finalize,
JavaScriptMode = options.JavaScriptMode,
Limit = options.Limit,
MaxTime = options.MaxTime,
NonAtomicOutput = collectionOutputOptions.NonAtomic,
Scope = options.Scope,
OutputMode = collectionOutputOptions.OutputMode,
ShardedOutput = collectionOutputOptions.Sharded,
Sort = options.Sort == null ? null : options.Sort.Render(_documentSerializer, _settings.SerializerRegistry),
Verbose = options.Verbose
});
}
private MapReduceOperation <TResult> CreateMapReduceOperation <TResult>(BsonJavaScript map, BsonJavaScript reduce, MapReduceOptions <TDocument, TResult> options, IBsonSerializer <TResult> resultSerializer)
{
return(new MapReduceOperation <TResult>(
_collectionNamespace,
map,
reduce,
resultSerializer,
_messageEncoderSettings)
{
Filter = options.Filter == null ? null : options.Filter.Render(_documentSerializer, _settings.SerializerRegistry),
FinalizeFunction = options.Finalize,
JavaScriptMode = options.JavaScriptMode,
Limit = options.Limit,
MaxTime = options.MaxTime,
ReadConcern = _settings.ReadConcern,
Scope = options.Scope,
Sort = options.Sort == null ? null : options.Sort.Render(_documentSerializer, _settings.SerializerRegistry),
Verbose = options.Verbose
});
}
public override async Task <IAsyncCursor <TResult> > MapReduceAsync <TResult>(BsonJavaScript map, BsonJavaScript reduce, MapReduceOptions <TDocument, TResult> options = null, CancellationToken cancellationToken = default(CancellationToken))
{
Ensure.IsNotNull(map, nameof(map));
Ensure.IsNotNull(reduce, nameof(reduce));
options = options ?? new MapReduceOptions <TDocument, TResult>();
var outputOptions = options.OutputOptions ?? MapReduceOutputOptions.Inline;
var resultSerializer = ResolveResultSerializer <TResult>(options.ResultSerializer);
if (outputOptions == MapReduceOutputOptions.Inline)
{
var operation = CreateMapReduceOperation(map, reduce, options, resultSerializer);
return(await ExecuteReadOperationAsync(operation, cancellationToken).ConfigureAwait(false));
}
else
{
var mapReduceOperation = CreateMapReduceOutputToCollectionOperation(map, reduce, options, outputOptions);
await ExecuteWriteOperationAsync(mapReduceOperation, cancellationToken).ConfigureAwait(false);
var findOperation = CreateMapReduceOutputToCollectionFindOperation <TResult>(options, mapReduceOperation.OutputCollectionNamespace, resultSerializer);
// we want to delay execution of the find because the user may
// not want to iterate the results at all...
var deferredCursor = new DeferredAsyncCursor <TResult>(
ct => ExecuteReadOperation(findOperation, ReadPreference.Primary, ct),
ct => ExecuteReadOperationAsync(findOperation, ReadPreference.Primary, ct));
return(await Task.FromResult(deferredCursor).ConfigureAwait(false));
}
}
public override IAsyncCursor <TResult> MapReduce <TResult>(IClientSessionHandle session, BsonJavaScript map, BsonJavaScript reduce, MapReduceOptions <TDocument, TResult> options = null, CancellationToken cancellationToken = default(CancellationToken))
{
options = options ?? new MapReduceOptions <TDocument, TResult>();
options.Filter = CombineFilters(options.Filter);
return(_wrappedCollection.MapReduce(session, map, reduce, options, cancellationToken));
}
public override async Task <IAsyncCursor <TResult> > MapReduceAsync <TResult>(BsonJavaScript map, BsonJavaScript reduce, MapReduceOptions <TDocument, TResult> options = null, CancellationToken cancellationToken = default(CancellationToken))
{
Ensure.IsNotNull(map, nameof(map));
Ensure.IsNotNull(reduce, nameof(reduce));
options = options ?? new MapReduceOptions <TDocument, TResult>();
var outputOptions = options.OutputOptions ?? MapReduceOutputOptions.Inline;
var resultSerializer = ResolveResultSerializer <TResult>(options.ResultSerializer);
if (outputOptions == MapReduceOutputOptions.Inline)
{
var operation = new MapReduceOperation <TResult>(
_collectionNamespace,
map,
reduce,
resultSerializer,
_messageEncoderSettings)
{
Filter = options.Filter == null ? null : options.Filter.Render(_documentSerializer, _settings.SerializerRegistry),
FinalizeFunction = options.Finalize,
JavaScriptMode = options.JavaScriptMode,
Limit = options.Limit,
MaxTime = options.MaxTime,
Scope = options.Scope,
Sort = options.Sort == null ? null : options.Sort.Render(_documentSerializer, _settings.SerializerRegistry),
Verbose = options.Verbose
};
return(await ExecuteReadOperationAsync(operation, cancellationToken).ConfigureAwait(false));
}
else
{
var collectionOutputOptions = (MapReduceOutputOptions.CollectionOutput)outputOptions;
var databaseNamespace = collectionOutputOptions.DatabaseName == null ?
_collectionNamespace.DatabaseNamespace :
new DatabaseNamespace(collectionOutputOptions.DatabaseName);
var outputCollectionNamespace = new CollectionNamespace(databaseNamespace, collectionOutputOptions.CollectionName);
var operation = new MapReduceOutputToCollectionOperation(
_collectionNamespace,
outputCollectionNamespace,
map,
reduce,
_messageEncoderSettings)
{
BypassDocumentValidation = options.BypassDocumentValidation,
Filter = options.Filter == null ? null : options.Filter.Render(_documentSerializer, _settings.SerializerRegistry),
FinalizeFunction = options.Finalize,
JavaScriptMode = options.JavaScriptMode,
Limit = options.Limit,
MaxTime = options.MaxTime,
NonAtomicOutput = collectionOutputOptions.NonAtomic,
Scope = options.Scope,
OutputMode = collectionOutputOptions.OutputMode,
ShardedOutput = collectionOutputOptions.Sharded,
Sort = options.Sort == null ? null : options.Sort.Render(_documentSerializer, _settings.SerializerRegistry),
Verbose = options.Verbose
};
await ExecuteWriteOperationAsync(operation, cancellationToken).ConfigureAwait(false);
var findOperation = new FindOperation <TResult>(
outputCollectionNamespace,
resultSerializer,
_messageEncoderSettings)
{
MaxTime = options.MaxTime
};
// we want to delay execution of the find because the user may
// not want to iterate the results at all...
var deferredCursor = new DeferredAsyncCursor <TResult>(
ct => ExecuteReadOperation(findOperation, ReadPreference.Primary, ct),
ct => ExecuteReadOperationAsync(findOperation, ReadPreference.Primary, ct));
return(await Task.FromResult(deferredCursor).ConfigureAwait(false));
}
}
