MongoDB request DSL/opensavvy.ktmongo.dsl.query/UpdateQuery/setUnless

setUnless

open fun <V> Field<T, V>.setUnless(condition: Boolean, value: V)(source)
open fun <V> KProperty1<T, V>.setUnless(condition: Boolean, value: V)(source)

Replaces the value of a field with the specified value, if condition is false.

If condition is true, this operator does nothing.

Example

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

collection.filter {
    User::name eq "foo"
}.updateMany {
    User::age.setUnless(someComplexOperation, 18)
}
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Only set if a new document is created.