public override IAggregateFluent <AggregateBucketResult <TValue> > Bucket <TValue>(
AggregateExpressionDefinition <TResult, TValue> groupBy,
IEnumerable <TValue> boundaries,
Optional <TValue> defaultBucket = default(Optional <TValue>))
{
const string operatorName = "$bucket";
var stage = new DelegatedPipelineStageDefinition <TResult, AggregateBucketResult <TValue> >(
operatorName,
(s, sr) =>
{
var valueSerializer = sr.GetSerializer <TValue>();
var renderedGroupBy = groupBy.Render(s, sr);
var serializedBoundaries = boundaries.Select(b => valueSerializer.ToBsonValue(b));
var serializedDefaultBucket = defaultBucket.HasValue ? valueSerializer.ToBsonValue(defaultBucket.Value) : null;
var document = new BsonDocument
{
{ operatorName, new BsonDocument
{
{ "groupBy", renderedGroupBy },
{ "boundaries", new BsonArray(serializedBoundaries) },
{ "default", serializedDefaultBucket, serializedDefaultBucket != null }
} }
};
return(new RenderedPipelineStageDefinition <AggregateBucketResult <TValue> >(
operatorName,
document,
sr.GetSerializer <AggregateBucketResult <TValue> >()));
});
return(AppendStage(stage));
}
public override IAggregateFluent <AggregateBucketAutoResult <TValue> > BucketAuto <TValue>(
AggregateExpressionDefinition <TResult, TValue> groupBy,
int buckets,
AggregateBucketAutoOptions options = null)
{
Ensure.IsNotNull(groupBy, nameof(groupBy));
Ensure.IsGreaterThanZero(buckets, nameof(buckets));
const string operatorName = "$bucketAuto";
var stage = new DelegatedPipelineStageDefinition <TResult, AggregateBucketAutoResult <TValue> >(
operatorName,
(s, sr) =>
{
var renderedGroupBy = groupBy.Render(s, sr);
var document = new BsonDocument
{
{ operatorName, new BsonDocument
{
{ "groupBy", renderedGroupBy },
{ "buckets", buckets },
{ "granularity", () => options.Granularity.Value.Value, options != null && options.Granularity.HasValue }
} }
};
return(new RenderedPipelineStageDefinition <AggregateBucketAutoResult <TValue> >(
operatorName,
document,
sr.GetSerializer <AggregateBucketAutoResult <TValue> >()));
});
return(AppendStage(stage));
}
public override IAggregateFluent <TNewResult> GraphLookup <TNewResult, TFrom, TConnect, TConnectFrom, TStartWith, TAs, TAsEnumerable>(
IMongoCollection <TFrom> from,
FieldDefinition <TFrom, TConnectFrom> connectFromField,
FieldDefinition <TFrom, TConnect> connectToField,
AggregateExpressionDefinition <TResult, TStartWith> startWith,
FieldDefinition <TNewResult, TAsEnumerable> @as,
FieldDefinition <TAs, int> depthField,
AggregateGraphLookupOptions <TNewResult, TFrom, TConnect, TConnectFrom, TStartWith, TAs, TAsEnumerable> options = null)
{
Ensure.IsNotNull(from, nameof(from));
Ensure.IsNotNull(connectFromField, nameof(connectFromField));
Ensure.IsNotNull(connectToField, nameof(connectToField));
Ensure.IsNotNull(startWith, nameof(startWith));
Ensure.IsNotNull(@as, nameof(@as));
Ensure.That(from.Database.DatabaseNamespace.Equals(_collection.Database.DatabaseNamespace), "From collection must be from the same database.", nameof(from));
Ensure.That(IsTConnectOrEnumerableTConnect <TConnectFrom, TConnect>(), "TConnectFrom must be either TConnect or a type that implements IEnumerable<TConnect>.", nameof(TConnectFrom));
Ensure.That(IsTConnectOrEnumerableTConnect <TStartWith, TConnect>(), "TStartWith must be either TConnect or a type that implements IEnumerable<TConnect>.", nameof(TStartWith));
const string operatorName = "$graphLookup";
var stage = new DelegatedPipelineStageDefinition <TResult, TNewResult>(
operatorName,
(s, sr) =>
{
var resultSerializer = s;
var newResultSerializer = options?.NewResultSerializer ?? sr.GetSerializer <TNewResult>();
var fromSerializer = options?.FromSerializer ?? sr.GetSerializer <TFrom>();
var asSerializer = options?.AsSerializer ?? sr.GetSerializer <TAs>();
var renderedConnectToField = connectToField.Render(fromSerializer, sr);
var renderedStartWith = startWith.Render(resultSerializer, sr);
var renderedConnectFromField = connectFromField.Render(fromSerializer, sr);
var renderedAs = @as.Render(newResultSerializer, sr);
var renderedDepthField = depthField?.Render(asSerializer, sr);
var renderedRestrictSearchWithMatch = options?.RestrictSearchWithMatch?.Render(fromSerializer, sr);
var document = new BsonDocument
{
{ operatorName, new BsonDocument
{
{ "from", from.CollectionNamespace.CollectionName },
{ "connectFromField", renderedConnectFromField.FieldName },
{ "connectToField", renderedConnectToField.FieldName },
{ "startWith", renderedStartWith },
{ "as", renderedAs.FieldName },
{ "depthField", () => renderedDepthField.FieldName, renderedDepthField != null },
{ "maxDepth", () => options.MaxDepth.Value, options != null && options.MaxDepth.HasValue },
{ "restrictSearchWithMatch", renderedRestrictSearchWithMatch, renderedRestrictSearchWithMatch != null }
} }
};
return(new RenderedPipelineStageDefinition <TNewResult>(operatorName, document, newResultSerializer));
});
return(AppendStage <TNewResult>(stage));
}
public override IAggregateFluent <TNewResult> Bucket <TValue, TNewResult>(
AggregateExpressionDefinition <TResult, TValue> groupBy,
IEnumerable <TValue> boundaries,
ProjectionDefinition <TResult, TNewResult> output,
AggregateBucketOptions <TValue> options = null)
{
Ensure.IsNotNull(groupBy, nameof(groupBy));
Ensure.IsNotNull(boundaries, nameof(boundaries));
Ensure.IsNotNull(output, nameof(output));
const string operatorName = "$bucket";
var stage = new DelegatedPipelineStageDefinition <TResult, TNewResult>(
operatorName,
(s, sr) =>
{
var valueSerializer = sr.GetSerializer <TValue>();
var newResultSerializer = sr.GetSerializer <TNewResult>();
var renderedGroupBy = groupBy.Render(s, sr);
var serializedBoundaries = boundaries.Select(b => valueSerializer.ToBsonValue(b));
var serializedDefaultBucket = options != null && options.DefaultBucket.HasValue ? valueSerializer.ToBsonValue(options.DefaultBucket.Value) : null;
var renderedOutput = output.Render(s, sr);
var document = new BsonDocument
{
{ operatorName, new BsonDocument
{
{ "groupBy", renderedGroupBy },
{ "boundaries", new BsonArray(serializedBoundaries) },
{ "default", serializedDefaultBucket, serializedDefaultBucket != null },
{ "output", renderedOutput.Document }
} }
};
return(new RenderedPipelineStageDefinition <TNewResult>(
operatorName,
document,
newResultSerializer));
});
return(AppendStage(stage));
}
public override IAggregateFluent <AggregateSortByCountResult <TId> > SortByCount <TId>(AggregateExpressionDefinition <TResult, TId> id)
{
const string operatorName = "$sortByCount";
var stage = new DelegatedPipelineStageDefinition <TResult, AggregateSortByCountResult <TId> >(
operatorName,
(s, sr) =>
{
var outputSerializer = sr.GetSerializer <AggregateSortByCountResult <TId> >();
return(new RenderedPipelineStageDefinition <AggregateSortByCountResult <TId> >(operatorName, new BsonDocument(operatorName, id.Render(s, sr)), outputSerializer));
});
return(AppendStage(stage));
}
public override IAggregateFluent <TNewResult> ReplaceRoot <TNewResult>(AggregateExpressionDefinition <TResult, TNewResult> newRoot)
{
const string operatorName = "$replaceRoot";
var stage = new DelegatedPipelineStageDefinition <TResult, TNewResult>(
operatorName,
(s, sr) =>
{
var document = new BsonDocument(operatorName, new BsonDocument("newRoot", newRoot.Render(s, sr)));
var outputSerializer = sr.GetSerializer <TNewResult>();
return(new RenderedPipelineStageDefinition <TNewResult>(operatorName, document, outputSerializer));
});
return(AppendStage(stage));
}