MongoDB request DSL/opensavvy.ktmongo.dsl.query/FilterQuery/isMapNotEmpty

isMapNotEmpty

open fun Field<T, Map<String, *>>.isMapNotEmpty()(source)
open fun KProperty1<T, Map<String, *>>.isMapNotEmpty()(source)

Matches documents in which a map is not empty.

Example

Return all users that have one or more grades.

class User(
    val name: String?,
    val grades: Map<String, Int>
)

collection.find {
    User::grades.isMapNotEmpty()
}
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See also