/// <summary>
/// Appends a $bucketAuto stage to the pipeline.
/// </summary>
/// <typeparam name="TResult">The type of the result.</typeparam>
/// <typeparam name="TValue">The type of the value.</typeparam>
/// <param name="aggregate">The aggregate.</param>
/// <param name="groupBy">The expression providing the value to group by.</param>
/// <param name="buckets">The number of buckets.</param>
/// <param name="options">The options (optional).</param>
/// <returns>The fluent aggregate interface.</returns>
public static IAggregateFluent <AggregateBucketAutoResult <TValue> > BucketAuto <TResult, TValue>(
this IAggregateFluent <TResult> aggregate,
Expression <Func <TResult, TValue> > groupBy,
int buckets,
AggregateBucketAutoOptions options = null)
{
Ensure.IsNotNull(aggregate, nameof(aggregate));
Ensure.IsNotNull(groupBy, nameof(groupBy));
var groupByDefinition = new ExpressionAggregateExpressionDefinition <TResult, TValue>(groupBy, aggregate.Options.TranslationOptions);
return(aggregate.BucketAuto(groupByDefinition, buckets, options));
}
/// <summary>
/// Appends a $bucket stage to the pipeline.
/// </summary>
/// <typeparam name="TResult">The type of the result.</typeparam>
/// <typeparam name="TValue">The type of the value.</typeparam>
/// <param name="aggregate">The aggregate.</param>
/// <param name="groupBy">The expression providing the value to group by.</param>
/// <param name="boundaries">The bucket boundaries.</param>
/// <param name="options">The options.</param>
/// <returns>The fluent aggregate interface.</returns>
public static IAggregateFluent <AggregateBucketResult <TValue> > Bucket <TResult, TValue>(
this IAggregateFluent <TResult> aggregate,
Expression <Func <TResult, TValue> > groupBy,
IEnumerable <TValue> boundaries,
AggregateBucketOptions <TValue> options = null)
{
Ensure.IsNotNull(aggregate, nameof(aggregate));
Ensure.IsNotNull(groupBy, nameof(groupBy));
Ensure.IsNotNull(boundaries, nameof(boundaries));
var groupByDefinition = new ExpressionAggregateExpressionDefinition <TResult, TValue>(groupBy, aggregate.Options.TranslationOptions);
return(aggregate.Bucket(groupByDefinition, boundaries, options));
}
/// <summary>
/// Appends a $bucketAuto stage to the pipeline.
/// </summary>
/// <typeparam name="TResult">The type of the result.</typeparam>
/// <typeparam name="TValue">The type of the value.</typeparam>
/// <typeparam name="TNewResult">The type of the new result.</typeparam>
/// <param name="aggregate">The aggregate.</param>
/// <param name="groupBy">The expression providing the value to group by.</param>
/// <param name="buckets">The number of buckets.</param>
/// <param name="output">The output projection.</param>
/// <param name="options">The options (optional).</param>
/// <returns>The fluent aggregate interface.</returns>
public static IAggregateFluent <TNewResult> BucketAuto <TResult, TValue, TNewResult>(
this IAggregateFluent <TResult> aggregate,
Expression <Func <TResult, TValue> > groupBy,
int buckets,
Expression <Func <IGrouping <TValue, TResult>, TNewResult> > output,
AggregateBucketAutoOptions options = null)
{
Ensure.IsNotNull(aggregate, nameof(aggregate));
Ensure.IsNotNull(groupBy, nameof(groupBy));
Ensure.IsNotNull(output, nameof(output));
var groupByDefinition = new ExpressionAggregateExpressionDefinition <TResult, TValue>(groupBy, aggregate.Options.TranslationOptions);
var outputDefinition = new ExpressionBucketOutputProjection <TResult, TValue, TNewResult>(x => default(TValue), output, aggregate.Options.TranslationOptions);
return(aggregate.BucketAuto(groupByDefinition, buckets, outputDefinition, options));
}
/// <summary>
/// Appends a $bucket stage to the pipeline.
/// </summary>
/// <typeparam name="TResult">The type of the result.</typeparam>
/// <typeparam name="TValue">The type of the value.</typeparam>
/// <typeparam name="TNewResult">The type of the new result.</typeparam>
/// <param name="aggregate">The aggregate.</param>
/// <param name="groupBy">The expression providing the value to group by.</param>
/// <param name="boundaries">The bucket boundaries.</param>
/// <param name="output">The output projection.</param>
/// <param name="defaultBucket">The default bucket (optional).</param>
/// <returns>The fluent aggregate interface.</returns>
public static IAggregateFluent <TNewResult> Bucket <TResult, TValue, TNewResult>(
this IAggregateFluent <TResult> aggregate,
Expression <Func <TResult, TValue> > groupBy,
IEnumerable <TValue> boundaries,
Expression <Func <IGrouping <TValue, TResult>, TNewResult> > output,
Optional <TValue> defaultBucket = default(Optional <TValue>))
{
Ensure.IsNotNull(aggregate, nameof(aggregate));
Ensure.IsNotNull(groupBy, nameof(groupBy));
Ensure.IsNotNull(boundaries, nameof(boundaries));
var groupByDefinition = new ExpressionAggregateExpressionDefinition <TResult, TValue>(groupBy, aggregate.Options.TranslationOptions);
var outputDefinition = new ExpressionBucketOutputProjection <TResult, TValue, TNewResult>(x => default(TValue), output, aggregate.Options.TranslationOptions);
return(aggregate.Bucket(groupByDefinition, boundaries, outputDefinition, defaultBucket));
}
/// <summary>
/// Appends a $graphLookup stage to the pipeline.
/// </summary>
/// <typeparam name="TResult">The type of the result.</typeparam>
/// <typeparam name="TNewResult">The type of the new result (must be same as TResult with an additional as field).</typeparam>
/// <typeparam name="TFrom">The type of the from documents.</typeparam>
/// <typeparam name="TConnect">The type of the connect field.</typeparam>
/// <typeparam name="TConnectFrom">The type of the connect from field (must be either TConnect or a type that implements IEnumerable{TConnect}).</typeparam>
/// <typeparam name="TStartWith">The type of the start with expression (must be either TConnect or a type that implements IEnumerable{TConnect}).</typeparam>
/// <typeparam name="TAsEnumerable">The type of the enumerable as field.</typeparam>
/// <param name="aggregate">The aggregate.</param>
/// <param name="from">The from collection.</param>
/// <param name="connectFromField">The connect from field.</param>
/// <param name="connectToField">The connect to field.</param>
/// <param name="startWith">The start with value.</param>
/// <param name="as">The as field.</param>
/// <param name="options">The options.</param>
/// <returns>The fluent aggregate interface.</returns>
public static IAggregateFluent <TNewResult> GraphLookup <TResult, TNewResult, TFrom, TConnect, TConnectFrom, TStartWith, TAsEnumerable>(
this IAggregateFluent <TResult> aggregate,
IMongoCollection <TFrom> from,
Expression <Func <TFrom, TConnectFrom> > connectFromField,
Expression <Func <TFrom, TConnect> > connectToField,
Expression <Func <TResult, TStartWith> > startWith,
Expression <Func <TNewResult, TAsEnumerable> > @as,
AggregateGraphLookupOptions <TNewResult, TFrom, TConnect, TConnectFrom, TStartWith, TFrom, TAsEnumerable> options = null)
where TAsEnumerable : IEnumerable <TFrom>
{
Ensure.IsNotNull(aggregate, nameof(aggregate));
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));
var connectFromFieldDefinition = new ExpressionFieldDefinition <TFrom, TConnectFrom>(connectFromField);
var connectToFieldDefinition = new ExpressionFieldDefinition <TFrom, TConnect>(connectToField);
var startWithDefinition = new ExpressionAggregateExpressionDefinition <TResult, TStartWith>(startWith, aggregate.Options.TranslationOptions);
var asDefinition = new ExpressionFieldDefinition <TNewResult, TAsEnumerable>(@as);
return(aggregate.GraphLookup(from, connectFromFieldDefinition, connectToFieldDefinition, startWithDefinition, asDefinition, options));
}