KtMongo: MongoDB driver for Kotlin • Synchronous/opensavvy.ktmongo.sync.operations/CountOperations

CountOperations

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

Interface grouping MongoDB operations relating to counting documents.

Inheritors

MongoCollection

Properties

abstract val context: BsonContext

Functions

abstract fun count(): Long

Counts how many documents exist in the collection.

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

Counts how many documents match predicate in the collection.

abstract fun countEstimated(): Long

Counts all documents in the collection.

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

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