MongoDB request DSL • opensavvy.ktmongo.dsl.command • Count

Count

class Count<Document : Any> : AbstractBsonNode, Command

Counting a number of documents in a collection.

Example

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

External resources

• Official documentation

See also

• FilterQuery Filter operators

• CountOptions Options

Constructors

Count

constructor(context: )

Properties

context

abstract val context: 

The context used to generate this expression.

filter

val filter: FilterQuery<Document>

options

val options: CountOptions<Document>

Functions

freeze

abstract override fun freeze()

Makes this expression immutable.

simplify

abstract fun simplify(): BsonNode?

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

toBson

open fun toBson(): 

Writes the result of simplifying to a new Bson.

toString

fun toString(simplified: Boolean): String

JSON representation of this expression.

abstract override fun toString(): String

JSON representation of this expression.

writeTo

abstract fun writeTo(writer: )

Writes the result of simplifying this expression into writer.