Network.Riak.Value

This module allows storage and retrieval of data using the IsContent typeclass. This provides access to more of Riak's storage features than JSON, e.g. links.

The functions in this module do not perform any conflict resolution.

Documentation

class IsContent c where

Methods

parseContent :: Content -> Parser c

toContent :: c -> Content

Instances

IsContent ()

IsContent Value

IsContent Content

IsContent a => IsContent (ResolvableMonoid a)

(FromJSON a, ToJSON a) => IsContent (JSON a)

fromContent :: IsContent c => Content -> Maybe c

get :: IsContent c => Connection -> Bucket -> Key -> R -> IO (Maybe ([c], VClock))

Retrieve a value. This may return multiple conflicting siblings. Choosing among them is your responsibility.

getMany :: IsContent c => Connection -> Bucket -> [Key] -> R -> IO [Maybe ([c], VClock)]

put :: IsContent c => Connection -> Bucket -> Key -> Maybe VClock -> c -> W -> DW -> IO ([c], VClock)

Store a single value. This may return multiple conflicting siblings. Choosing among them, and storing a new value, is your responsibility.

You should only supply Nothing as a T.VClock if you are sure that the given bucket+key combination does not already exist. If you omit a T.VClock but the bucket+key does exist, your value will not be stored.

put_ :: IsContent c => Connection -> Bucket -> Key -> Maybe VClock -> c -> W -> DW -> IO ()

Store a single value, without the possibility of conflict resolution.

You should only supply Nothing as a T.VClock if you are sure that the given bucket+key combination does not already exist. If you omit a T.VClock but the bucket+key does exist, your value will not be stored, and you will not be notified.

putMany :: IsContent c => Connection -> Bucket -> [(Key, Maybe VClock, c)] -> W -> DW -> IO [([c], VClock)]

Store many values. This may return multiple conflicting siblings for each value stored. Choosing among them, and storing a new value in each case, is your responsibility.

You should only supply Nothing as a T.VClock if you are sure that the given bucket+key combination does not already exist. If you omit a T.VClock but the bucket+key does exist, your value will not be stored.

putMany_ :: IsContent c => Connection -> Bucket -> [(Key, Maybe VClock, c)] -> W -> DW -> IO ()

Store many values, without the possibility of conflict resolution.

You should only supply Nothing as a T.VClock if you are sure that the given bucket+key combination does not already exist. If you omit a T.VClock but the bucket+key does exist, your value will not be stored, and you will not be notified.