Database.Cypher

Documentation

data Cypher a

All interaction with Neo4j is done through the Cypher monad. Use cypher to add a query to the monad.

Instances

Monad Cypher

data Entity a

A neo4j node or edge

Instances

Eq a => Eq (Entity a)

Show a => Show (Entity a)

ToJSON (Entity a)

FromJSON a => FromJSON (Entity a)

data CypherResult a

Raw result data returned by Neo4j. Only use this if you care about column headers.

Constructors

CypherResult

Fields

rescolumns :: [Text]

resdata :: a

Instances

Eq a => Eq (CypherResult a)

Show a => Show (CypherResult a)

ToJSON a0 => ToJSON (CypherResult a0)

FromJSON a0 => FromJSON (CypherResult a0)

FromJSON a => FromCypher (CypherResult a)

runCypher :: Cypher a -> Hostname -> Port -> IO a

Execute some number of cypher queries

cypher :: FromCypher a => Text -> Value -> Cypher a

Perform a cypher query

data CypherException

An error in handling a Cypher query, either in communicating with the server or parsing the result

Constructors

CypherServerException Status ResponseHeaders ByteString

CypherClientParseException ByteString

Instances

Show CypherException

Typeable CypherException

Exception CypherException

type Hostname = ByteString

type Port = Int

data OneTuple a

OneTuple is the singleton tuple data type.

Constructors

OneTuple a

singleton tuple constructor

Instances

Monad OneTuple

Functor OneTuple

MonadFix OneTuple

Applicative OneTuple

Foldable OneTuple

Traversable OneTuple

Bounded a => Bounded (OneTuple a)

Enum a => Enum (OneTuple a)

Eq a => Eq (OneTuple a)

Ord a => Ord (OneTuple a)

Read a => Read (OneTuple a)

Show a => Show (OneTuple a)

Ix a => Ix (OneTuple a)

ToJSON a => ToJSON (OneTuple a)

FromJSON a => FromJSON (OneTuple a)

Monoid a => Monoid (OneTuple a)

FromJSON a => FromCypher (OneTuple a)