com.basho.riak.client.cap

Interface Mutation<T>

All Known Subinterfaces:

ConditionalStoreMutation<T>

All Known Implementing Classes:

ClobberMutation

public interface Mutation<T>

A Mutation is some encapsulated logic that generates a new value from some previous value

Big thanks to Coda Hale from Yammer for this. Modelling your data as logically monotonic makes store operations more predictable in a distributed environment. Basically changing data *based on its contents* and your logic. As the simplest example: Rather than creating a riak object with a value of (say 25) you create a Mutation that adds 1 to whatever value comes from Riak

Author:

russell

Method Summary

Methods

Modifier and Type	Method and Description
T	apply(T original) Applies a mutation to the original value passed in

Method Detail

apply

T apply(T original)

Applies a mutation to the original value passed in

Parameters:

original - the value to mutate.

Returns:

the mutated value.