MongoDB request DSL • opensavvy.ktmongo.dsl.query • FilterQueryPredicate • isUndefined

isUndefined

open fun isUndefined()

Deprecated

Selects documents for which the field is undefined.

Example

class User(
    val name: String,
    val age: Int?,
)

collection.find {
    User::age { isUndefined() }
}

External resources

• Official documentation

See also

• FilterQuery.isUndefined Shorthand.

• FilterQueryPredicate.isNotUndefined Opposite.