MongoDB request DSL • opensavvy.ktmongo.dsl.options • SortOptionDsl • descending

descending¶

abstract fun descending(field: Field<Document, *>)

If two documents have a different value of field, the one with greater value will be returned first.

If this function is called multiple times, the first call takes precedence: subsequent calls determine the order of documents when they are equal according to the first call.

Example¶

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

users.find(
    options = {
        sort {
            descending(User::age)
            ascending(User::name)
        }
    },
    filter = {}
)

This will return users from the oldest to the youngest. If multiple users have the same age, they are returned in the alphabetical order of their name.

See also¶

SortOptionDsl.ascending To return documents in ascending order.

open fun descending(field: KProperty1<Document, *>)

If two documents have a different value of field, the one with greater value will be returned first.

If this function is called multiple times, the first call takes precedence: subsequent calls determine the order of documents when they are equal according to the first call.

Example¶

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

users.find(
    options = {
        sort {
            descending(User::age)
            ascending(User::name)
        }
    },
    filter = {}
)

This will return users from the oldest to the youngest. If multiple users have the same age, they are returned in the alphabetical order of their name.