Skip to content

MongoDB request DSL • opensavvy.ktmongo.dsl.query • UpdateQuery • mul

mul

abstract infix fun <V : Number> Field<T, V>.mul(amount: V)

Multiplies a field by the specified amount.

If the field doesn't exist (either the document doesn't have it, or the operation is an upsert and a new document is created), the field is created with an initial value of 0.

Use of this operator with a field with a null value will generate an error.

Example

class User(
    val name: String,
    val price: Double,
)

collection.updateMany {
    User::price mul 2.0
}

External resources

open infix fun <V : Number> KProperty1<T, V>.mul(amount: V)

Multiplies a field by the specified amount.

If the field doesn't exist (either the document doesn't have it, or the operation is an upsert and a new document is created), the field is created with an initial value of 0.

Use of this operator with a field with a null value will generate an error.

Example

class User(
    val name: String,
    val price: Double,
)

collection.updateMany {
    User::price mul 2.0
}

External resources