Enum deno_kv::MutationKind

pub enum MutationKind {
    Set(Value),
    Delete,
    Sum(Value),
    Min(Value),
    Max(Value),
}

The type of mutation to perform on a key in the database.

Set

The set mutation sets the value of the key to the specified value. It discards the previous value of the key, if any.

This operand supports all Value types.

Delete

The delete mutation deletes the value of the key.

Sum

The sum mutation adds the specified value to the existing value of the key.

This operand supports only value types Value::U64. The existing value in the database must match the type of the value specified in the mutation. If the key does not exist in the database, then the value specified in the mutation is used as the new value of the key.

Min

The min mutation sets the value of the key to the minimum of the existing value of the key and the specified value.

This operand supports only value types Value::U64. The existing value in the database must match the type of the value specified in the mutation. If the key does not exist in the database, then the value specified in the mutation is used as the new value of the key.

Max

The max mutation sets the value of the key to the maximum of the existing value of the key and the specified value.

This operand supports only value types Value::U64. The existing value in the database must match the type of the value specified in the mutation. If the key does not exist in the database, then the value specified in the mutation is used as the new value of the key.

Variants

Set(Value)

Delete

Sum(Value)

Min(Value)

Max(Value)

Implementations

impl MutationKind

pub fn value(&self) -> Option<&Value>