KtMongo: MongoDB driver for Kotlin • API/opensavvy.ktmongo.api.operations/CountOperations

CountOperations

interface CountOperations<Document : Any> : BaseOperations(source)

The different MongoDB operations related to counting documents.

Inheritors

MongoCollection

Properties

abstract val context: BsonContext

The full BSON configuration, used by the DSL to generate queries.

Functions

abstract suspend fun count(): Long

Counts how many documents exist in the collection.

abstract suspend fun count(options: CountOptions<Document>.() -> Unit = {}, predicate: FilterQuery<Document>.() -> Unit): Long

Counts how many documents match predicate in the collection.

abstract suspend fun countEstimated(): Long

Counts all documents in the collection.

open suspend fun exists(options: CountOptions<Document>.() -> Unit = {}, predicate: FilterQuery<Document>.() -> Unit): Boolean

Tests if there exists a document that matches predicate in the collection.