/// <inheritdoc />
public virtual IAggregateFluent <TNewResult> Lookup <TForeignDocument, TAsElement, TAs, TNewResult>(
IMongoCollection <TForeignDocument> foreignCollection,
BsonDocument let,
PipelineDefinition <TForeignDocument, TAsElement> lookupPipeline,
FieldDefinition <TNewResult, TAs> @as,
AggregateLookupOptions <TForeignDocument, TNewResult> options = null)
where TAs : IEnumerable <TAsElement>
{
throw new NotImplementedException();
}
public override IAggregateFluent <TNewResult> Lookup <TForeignDocument, TAsElement, TAs, TNewResult>(
IMongoCollection <TForeignDocument> foreignCollection,
BsonDocument let,
PipelineDefinition <TForeignDocument, TAsElement> lookupPipeline,
FieldDefinition <TNewResult, TAs> @as,
AggregateLookupOptions <TForeignDocument, TNewResult> options = null)
{
Ensure.IsNotNull(foreignCollection, nameof(foreignCollection));
return(WithPipeline(_pipeline.Lookup(foreignCollection, let, lookupPipeline, @as)));
}
/// <summary>
/// Appends a lookup stage to the pipeline.
/// </summary>
/// <typeparam name="TResult">The type of the result.</typeparam>
/// <typeparam name="TForeignDocument">The type of the foreign collection.</typeparam>
/// <typeparam name="TNewResult">The type of the new result.</typeparam>
/// <param name="aggregate">The aggregate.</param>
/// <param name="foreignCollection">The foreign collection.</param>
/// <param name="localField">The local field.</param>
/// <param name="foreignField">The foreign field.</param>
/// <param name="as">The field in the result to place the foreign matches.</param>
/// <param name="options">The options.</param>
/// <returns>The fluent aggregate interface.</returns>
public static IAggregateFluent <TNewResult> Lookup <TResult, TForeignDocument, TNewResult>(
this IAggregateFluent <TResult> aggregate,
IMongoCollection <TForeignDocument> foreignCollection,
Expression <Func <TResult, object> > localField,
Expression <Func <TForeignDocument, object> > foreignField,
Expression <Func <TNewResult, object> > @as,
AggregateLookupOptions <TForeignDocument, TNewResult> options = null)
{
Ensure.IsNotNull(aggregate, nameof(aggregate));
return(aggregate.AppendStage(PipelineStageDefinitionBuilder.Lookup(foreignCollection, localField, foreignField, @as, options)));
}
/// <summary>
/// Appends a lookup stage to the pipeline.
/// </summary>
/// <typeparam name="TResult">The type of the result.</typeparam>
/// <typeparam name="TForeignDocument">The type of the foreign collection documents.</typeparam>
/// <typeparam name="TAsElement">The type of the as field elements.</typeparam>
/// <typeparam name="TAs">The type of the as field.</typeparam>
/// <typeparam name="TNewResult">The type of the new result.</typeparam>
/// <param name="aggregate">The aggregate.</param>
/// <param name="foreignCollection">The foreign collection.</param>
/// <param name="let">The "let" definition.</param>
/// <param name="lookupPipeline">The lookup pipeline.</param>
/// <param name="as">The as field in <typeparamref name="TNewResult" /> in which to place the results of the lookup pipeline.</param>
/// <param name="options">The options.</param>
/// <returns>The fluent aggregate interface.</returns>
public static IAggregateFluent <TNewResult> Lookup <TResult, TForeignDocument, TAsElement, TAs, TNewResult>(
this IAggregateFluent <TResult> aggregate,
IMongoCollection <TForeignDocument> foreignCollection,
BsonDocument let,
PipelineDefinition <TForeignDocument, TAsElement> lookupPipeline,
Expression <Func <TNewResult, TAs> > @as,
AggregateLookupOptions <TForeignDocument, TNewResult> options = null)
where TAs : IEnumerable <TAsElement>
{
Ensure.IsNotNull(aggregate, nameof(aggregate));
return(aggregate.AppendStage(PipelineStageDefinitionBuilder.Lookup <TResult, TForeignDocument, TAsElement, TAs, TNewResult>(
foreignCollection,
let,
lookupPipeline,
@as,
options)));
}
public override IAggregateFluent <TNewResult> Lookup <TForeignDocument, TNewResult>(string foreignCollectionName, FieldDefinition <TResult> localField, FieldDefinition <TForeignDocument> foreignField, FieldDefinition <TNewResult> @as, AggregateLookupOptions <TForeignDocument, TNewResult> options)
{
Ensure.IsNotNull(foreignCollectionName, nameof(foreignCollectionName));
var foreignCollection = _collection.Database.GetCollection <TForeignDocument>(foreignCollectionName);
return(WithPipeline(_pipeline.Lookup(foreignCollection, localField, foreignField, @as, options)));
}
public override IAggregateFluent <TNewResult> Lookup <TForeignDocument, TNewResult>(string foreignCollectionName, FieldDefinition <TResult> localField, FieldDefinition <TForeignDocument> foreignField, FieldDefinition <TNewResult> @as, AggregateLookupOptions <TForeignDocument, TNewResult> options)
{
options = options ?? new AggregateLookupOptions <TForeignDocument, TNewResult>();
const string operatorName = "$lookup";
var stage = new DelegatedPipelineStageDefinition <TResult, TNewResult>(
operatorName,
(localSerializer, sr) =>
{
var foreignSerializer = options.ForeignSerializer ?? (localSerializer as IBsonSerializer <TForeignDocument>) ?? sr.GetSerializer <TForeignDocument>();
var newResultSerializer = options.ResultSerializer ?? (localSerializer as IBsonSerializer <TNewResult>) ?? sr.GetSerializer <TNewResult>();
return(new RenderedPipelineStageDefinition <TNewResult>(
operatorName, new BsonDocument(operatorName, new BsonDocument
{
{ "from", foreignCollectionName },
{ "localField", localField.Render(localSerializer, sr).FieldName },
{ "foreignField", foreignField.Render(foreignSerializer, sr).FieldName },
{ "as", @as.Render(newResultSerializer, sr).FieldName }
}),
newResultSerializer));
});
return(AppendStage <TNewResult>(stage));
}
/// <inheritdoc />
public virtual IAggregateFluent <TNewResult> Lookup <TForeignDocument, TNewResult>(string foreignCollectionName, FieldDefinition <TResult> localField, FieldDefinition <TForeignDocument> foreignField, FieldDefinition <TNewResult> @as, AggregateLookupOptions <TForeignDocument, TNewResult> options)
{
throw new NotImplementedException();
}
/// <summary>
/// Appends a lookup stage to the pipeline.
/// </summary>
/// <typeparam name="TResult">The type of the result.</typeparam>
/// <typeparam name="TForeignDocument">The type of the foreign collection.</typeparam>
/// <typeparam name="TNewResult">The type of the new result.</typeparam>
/// <param name="aggregate">The aggregate.</param>
/// <param name="foreignCollection">The foreign collection.</param>
/// <param name="localField">The local field.</param>
/// <param name="foreignField">The foreign field.</param>
/// <param name="as">The field in the result to place the foreign matches.</param>
/// <param name="options">The options.</param>
/// <returns>The fluent aggregate interface.</returns>
public static IAggregateFluent <TNewResult> Lookup <TResult, TForeignDocument, TNewResult>(this IAggregateFluent <TResult> aggregate,
IMongoCollection <TForeignDocument> foreignCollection,
Expression <Func <TResult, object> > localField,
Expression <Func <TForeignDocument, object> > foreignField,
Expression <Func <TNewResult, object> > @as,
AggregateLookupOptions <TForeignDocument, TNewResult> options = null)
{
Ensure.IsNotNull(aggregate, nameof(aggregate));
Ensure.IsNotNull(foreignCollection, nameof(foreignCollection));
Ensure.IsNotNull(localField, nameof(localField));
Ensure.IsNotNull(foreignField, nameof(foreignField));
Ensure.IsNotNull(@as, nameof(@as));
options = options ?? new AggregateLookupOptions <TForeignDocument, TNewResult>();
if (options.ForeignSerializer == null)
{
options.ForeignSerializer = foreignCollection.DocumentSerializer;
}
return(aggregate.Lookup(
foreignCollection.CollectionNamespace.CollectionName,
new ExpressionFieldDefinition <TResult>(localField),
new ExpressionFieldDefinition <TForeignDocument>(foreignField),
new ExpressionFieldDefinition <TNewResult>(@as),
options));
}
