Count¶

class Count<Document : Any> : Command, AbstractBsonNode

Counting a number of documents in a collection.

users.count({ limit(99) }) {
    User::age lt 18
}

Constructors¶

constructor(context: BsonContext)

@LowLevelApi
open val context: BsonContext

The context used to generate this expression.

val filter: FilterQuery<Document>

val options: CountOptions<Document>

@LowLevelApi
open override fun freeze()

Makes this expression immutable.

@LowLevelApi
open fun simplify(): AbstractBsonNode?

Returns a simplified (but equivalent) expression to the current expression.

@LowLevelApi
open fun toBson(): BsonDocument

Writes the result of simplifying to a new BsonDocument.

fun toString(simplified: Boolean): String

JSON representation of this expression.

override fun toString(): String

JSON representation of this expression.

@LowLevelApi
override fun writeTo(writer: BsonFieldWriter)

Writes the result of simplifying this expression into writer.