public override IAggregateFluent <TNewResult> Group <TNewResult>(ProjectionDefinition <TResult, TNewResult> group)
{
const string operatorName = "$group";
var stage = new DelegatedPipelineStageDefinition <TResult, TNewResult>(
operatorName,
(s, sr) =>
{
var renderedProjection = group.Render(s, sr);
return(new RenderedPipelineStageDefinition <TNewResult>(operatorName, new BsonDocument(operatorName, renderedProjection.Document), renderedProjection.ProjectionSerializer));
});
return(AppendStage <TNewResult>(stage));
}
public override IAggregateFluent <TNewResult> Project <TNewResult>(ProjectionDefinition <TResult, TNewResult> projection)
{
const string operatorName = "$project";
var stage = new DelegatedPipelineStageDefinition <TResult, TNewResult>(
operatorName,
(s, sr) =>
{
var renderedProjection = projection.Render(s, sr);
BsonDocument document;
if (renderedProjection.Document == null)
{
document = new BsonDocument();
}
else
{
document = new BsonDocument(operatorName, renderedProjection.Document);
}
return(new RenderedPipelineStageDefinition <TNewResult>(operatorName, document, renderedProjection.ProjectionSerializer));
});
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 = "$bucket";
var stage = new DelegatedPipelineStageDefinition <TResult, TNewResult>(
operatorName,
(s, sr) =>
{
var valueSerializer = sr.GetSerializer <TValue>();
var newResultSerializer = sr.GetSerializer <TNewResult>();
var renderedGroupBy = groupBy.Render(s, sr);
var serializedBoundaries = boundaries.Select(b => valueSerializer.ToBsonValue(b));
var serializedDefaultBucket = options != null && options.DefaultBucket.HasValue ? valueSerializer.ToBsonValue(options.DefaultBucket.Value) : null;
var renderedOutput = output.Render(s, sr);
var document = new BsonDocument
{
{ operatorName, new BsonDocument
{
{ "groupBy", renderedGroupBy },
{ "boundaries", new BsonArray(serializedBoundaries) },
{ "default", serializedDefaultBucket, serializedDefaultBucket != null },
{ "output", renderedOutput.Document }
} }
};
return(new RenderedPipelineStageDefinition <TNewResult>(
operatorName,
document,
newResultSerializer));
});
return(AppendStage(stage));
}
public override IAggregateFluent <TNewResult> BucketAuto <TValue, TNewResult>(
AggregateExpressionDefinition <TResult, TValue> groupBy,
int buckets,
ProjectionDefinition <TResult, TNewResult> output,
AggregateBucketAutoOptions options = null)
{
Ensure.IsNotNull(groupBy, nameof(groupBy));
Ensure.IsGreaterThanZero(buckets, nameof(buckets));
Ensure.IsNotNull(output, nameof(output));
const string operatorName = "$bucketAuto";
var stage = new DelegatedPipelineStageDefinition <TResult, TNewResult>(
operatorName,
(s, sr) =>
{
var newResultSerializer = sr.GetSerializer <TNewResult>();
var renderedGroupBy = groupBy.Render(s, sr);
var renderedOutput = output.Render(s, sr);
var document = new BsonDocument
{
{ operatorName, new BsonDocument
{
{ "groupBy", renderedGroupBy },
{ "buckets", buckets },
{ "output", renderedOutput.Document },
{ "granularity", () => options.Granularity.Value.Value, options != null && options.Granularity.HasValue }
} }
};
return(new RenderedPipelineStageDefinition <TNewResult>(
operatorName,
document,
newResultSerializer));
});
return(AppendStage(stage));
}
/// <summary>
/// Projects the result.
/// </summary>
/// <typeparam name="TDocument">The type of the document.</typeparam>
/// <typeparam name="TProjection">The type of the projection (same as TDocument if there is no projection).</typeparam>
/// <param name="find">The fluent find.</param>
/// <param name="projection">The projection.</param>
/// <returns>The fluent find interface.</returns>
public static IFindFluent <TDocument, BsonDocument> Project <TDocument, TProjection>(this IFindFluent <TDocument, TProjection> find, ProjectionDefinition <TDocument, BsonDocument> projection)
{
Ensure.IsNotNull(find, nameof(find));
Ensure.IsNotNull(projection, nameof(projection));
return(find.Project <BsonDocument>(projection));
}
/// <inheritdoc /> public abstract IAggregateFluent <TNewResult> Group <TNewResult>(ProjectionDefinition <TResult, TNewResult> group);
public override IFindFluent <TDocument, TNewProjection> Project <TNewProjection>(ProjectionDefinition <TDocument, TNewProjection> projection)
{
var newOptions = new FindOptions <TDocument, TNewProjection>
{
AllowDiskUse = _options.AllowDiskUse,
AllowPartialResults = _options.AllowPartialResults,
BatchSize = _options.BatchSize,
Collation = _options.Collation,
Comment = _options.Comment,
CursorType = _options.CursorType,
Hint = _options.Hint,
Limit = _options.Limit,
Max = _options.Max,
MaxAwaitTime = _options.MaxAwaitTime,
MaxTime = _options.MaxTime,
Min = _options.Min,
#pragma warning disable 618
Modifiers = _options.Modifiers,
#pragma warning restore 618
NoCursorTimeout = _options.NoCursorTimeout,
#pragma warning disable 618
OplogReplay = _options.OplogReplay,
#pragma warning restore 618
Projection = projection,
ReturnKey = _options.ReturnKey,
ShowRecordId = _options.ShowRecordId,
Skip = _options.Skip,
Sort = _options.Sort,
};
return(new FindFluent <TDocument, TNewProjection>(_session, _collection, _filter, newOptions));
}
/// <summary>
/// Appends a project stage to the pipeline.
/// </summary>
/// <typeparam name="TResult">The type of the result.</typeparam>
/// <param name="aggregate">The aggregate.</param>
/// <param name="projection">The projection.</param>
/// <returns>
/// The fluent aggregate interface.
/// </returns>
public static IAggregateFluent <BsonDocument> Project <TResult>(this IAggregateFluent <TResult> aggregate, ProjectionDefinition <TResult, BsonDocument> projection)
{
Ensure.IsNotNull(aggregate, nameof(aggregate));
return(aggregate.AppendStage(PipelineStageDefinitionBuilder.Project(projection)));
}
/// <summary>
/// Combines an existing projection with a projection that filters the contents of an array.
/// </summary>
/// <typeparam name="TDocument">The type of the document.</typeparam>
/// <typeparam name="TItem">The type of the item.</typeparam>
/// <param name="projection">The projection.</param>
/// <param name="field">The field.</param>
/// <param name="filter">The filter.</param>
/// <returns>
/// A combined projection.
/// </returns>
public static ProjectionDefinition <TDocument> ElemMatch <TDocument, TItem>(this ProjectionDefinition <TDocument> projection, Expression <Func <TDocument, IEnumerable <TItem> > > field, Expression <Func <TItem, bool> > filter)
{
var builder = Builders <TDocument> .Projection;
return(builder.Combine(projection, builder.ElemMatch(field, filter)));
}
/// <summary>
/// Combines an existing projection with a projection that excludes a field.
/// </summary>
/// <typeparam name="TDocument">The type of the document.</typeparam>
/// <param name="projection">The projection.</param>
/// <param name="field">The field.</param>
/// <returns>
/// A combined projection.
/// </returns>
public static ProjectionDefinition <TDocument> Exclude <TDocument>(this ProjectionDefinition <TDocument> projection, FieldDefinition <TDocument> field)
{
var builder = Builders <TDocument> .Projection;
return(builder.Combine(projection, builder.Exclude(field)));
}
/// <inheritdoc /> public abstract IFindFluent <TDocument, TNewProjection> Project <TNewProjection>(ProjectionDefinition <TDocument, TNewProjection> projection);
/// <summary>
/// Appends a group stage to the pipeline.
/// </summary>
/// <typeparam name="TResult">The type of the result.</typeparam>
/// <param name="aggregate">The aggregate.</param>
/// <param name="group">The group projection.</param>
/// <returns>
/// The fluent aggregate interface.
/// </returns>
public static IAggregateFluent <BsonDocument> Group <TResult>(this IAggregateFluent <TResult> aggregate, ProjectionDefinition <TResult, BsonDocument> group)
{
Ensure.IsNotNull(aggregate, "aggregate");
Ensure.IsNotNull(group, "group");
return(aggregate.Group <BsonDocument>(group));
}
/// <summary>
/// Combines an existing projection with a meta projection.
/// </summary>
/// <typeparam name="TDocument">The type of the document.</typeparam>
/// <param name="projection">The projection.</param>
/// <param name="field">The field.</param>
/// <param name="metaFieldName">The meta field name.</param>
/// <returns>
/// A combined projection.
/// </returns>
public static ProjectionDefinition <TDocument> Meta <TDocument>(this ProjectionDefinition <TDocument> projection, string field, string metaFieldName)
{
var builder = Builders <TDocument> .Projection;
return(builder.Combine(projection, builder.Meta(field, metaFieldName)));
}
public override IAggregateFluent <TNewResult> Group <TNewResult>(ProjectionDefinition <TResult, TNewResult> group)
{
return(WithPipeline(_pipeline.Group(group)));
}
/// <summary>
/// Combines an existing projection with a projection that includes a field.
/// </summary>
/// <typeparam name="TDocument">The type of the document.</typeparam>
/// <param name="projection">The projection.</param>
/// <param name="field">The field.</param>
/// <returns>
/// A combined projection.
/// </returns>
public static ProjectionDefinition <TDocument> Include <TDocument>(this ProjectionDefinition <TDocument> projection, Expression <Func <TDocument, object> > field)
{
var builder = Builders <TDocument> .Projection;
return(builder.Combine(projection, builder.Include(field)));
}
public KnownResultTypeProjectionDefinitionAdapter(ProjectionDefinition <TSource> projection, IBsonSerializer <TProjection> projectionSerializer = null)
{
_projection = Ensure.IsNotNull(projection, "projection");
_projectionSerializer = projectionSerializer;
}
/// <summary>
/// Appends a project stage to the pipeline.
/// </summary>
/// <typeparam name="TResult">The type of the result.</typeparam>
/// <param name="aggregate">The aggregate.</param>
/// <param name="projection">The projection.</param>
/// <returns>
/// The fluent aggregate interface.
/// </returns>
public static IAggregateFluent <BsonDocument> Project <TResult>(this IAggregateFluent <TResult> aggregate, ProjectionDefinition <TResult, BsonDocument> projection)
{
Ensure.IsNotNull(aggregate, "aggregate");
Ensure.IsNotNull(projection, "projection");
return(aggregate.Project <BsonDocument>(projection));
}
/// <inheritdoc /> public abstract IAggregateFluent <TNewResult> Project <TNewResult>(ProjectionDefinition <TResult, TNewResult> projection);
/// <summary>
/// Combines an existing projection with a projection that filters the contents of an array.
/// </summary>
/// <typeparam name="TDocument">The type of the document.</typeparam>
/// <typeparam name="TItem">The type of the item.</typeparam>
/// <param name="projection">The projection.</param>
/// <param name="field">The field.</param>
/// <param name="filter">The filter.</param>
/// <returns>
/// A combined projection.
/// </returns>
public static ProjectionDefinition <TDocument> ElemMatch <TDocument, TItem>(this ProjectionDefinition <TDocument> projection, FieldDefinition <TDocument> field, FilterDefinition <TItem> filter)
{
var builder = Builders <TDocument> .Projection;
return(builder.Combine(projection, builder.ElemMatch(field, filter)));
}
/// <summary>
/// Combines an existing projection with a text score projection.
/// </summary>
/// <typeparam name="TDocument">The type of the document.</typeparam>
/// <param name="projection">The projection.</param>
/// <param name="field">The field.</param>
/// <returns>
/// A combined projection.
/// </returns>
public static ProjectionDefinition <TDocument> MetaTextScore <TDocument>(this ProjectionDefinition <TDocument> projection, string field)
{
var builder = Builders <TDocument> .Projection;
return(builder.Combine(projection, builder.MetaTextScore(field)));
}
public override IFindFluent <TDocument, TNewProjection> Project <TNewProjection>(ProjectionDefinition <TDocument, TNewProjection> projection)
{
var newOptions = new FindOptions <TDocument, TNewProjection>
{
AllowPartialResults = _options.AllowPartialResults,
BatchSize = _options.BatchSize,
Collation = _options.Collation,
Comment = _options.Comment,
CursorType = _options.CursorType,
Limit = _options.Limit,
MaxAwaitTime = _options.MaxAwaitTime,
MaxTime = _options.MaxTime,
Modifiers = _options.Modifiers,
NoCursorTimeout = _options.NoCursorTimeout,
OplogReplay = _options.OplogReplay,
Projection = projection,
Skip = _options.Skip,
Sort = _options.Sort,
};
return(new FindFluent <TDocument, TNewProjection>(_session, _collection, _filter, newOptions));
}
public override IAggregateFluent <TNewResult> Project <TNewResult>(ProjectionDefinition <TResult, TNewResult> projection)
{
return(WithPipeline(_pipeline.Project(projection)));
}
/// <summary>
/// Combines an existing projection with an array slice projection.
/// </summary>
/// <typeparam name="TDocument">The type of the document.</typeparam>
/// <param name="projection">The projection.</param>
/// <param name="field">The field.</param>
/// <param name="skip">The skip.</param>
/// <param name="limit">The limit.</param>
/// <returns>
/// A combined projection.
/// </returns>
public static ProjectionDefinition <TDocument> Slice <TDocument>(this ProjectionDefinition <TDocument> projection, Expression <Func <TDocument, object> > field, int skip, int?limit = null)
{
var builder = Builders <TDocument> .Projection;
return(builder.Combine(projection, builder.Slice(field, skip, limit)));
}
