/*
* $project => Select()
* $limit => Take()
* $group => GroupBy()
* $sort => OrderBy(),OrderByDescending()
* $unwind => SelectMany()
* $skip => Skip()
* $match => Where()
*/
public AggregationBuilder Add(AggregationBuilder builder)
{
this.pipeline.AddRange(builder.pipeline);
return(this);
}
public CommandResult Aggregate(AggregationBuilder b)
{
var result = context.Collection.Database.RunCommand(b.Build());
return(result);
}