Redland.Util

Utility functions based on mid-level bindings.

Hashes

withHash :: ForeignPtr RedlandWorld -> String -> [(String, String)] -> (ForeignPtr RedlandHash -> IO a) -> IO a

Mostly a conversion function.

RDF Graph (librdf_model)

withStatements :: ForeignPtr RedlandWorld -> ForeignPtr RedlandModel -> Triple -> ([Triple] -> IO a) -> IO a

Wrapper around modelFindStatements.

RDF term (librdf_node)

data LiteralNodeType

Constructors

XMLSchema String

LanguageTag String

Instances

Eq LiteralNodeType

Methods

(==) :: LiteralNodeType -> LiteralNodeType -> Bool

(/=) :: LiteralNodeType -> LiteralNodeType -> Bool

Ord LiteralNodeType

Methods

compare :: LiteralNodeType -> LiteralNodeType -> Ordering

(<) :: LiteralNodeType -> LiteralNodeType -> Bool

(<=) :: LiteralNodeType -> LiteralNodeType -> Bool

(>) :: LiteralNodeType -> LiteralNodeType -> Bool

(>=) :: LiteralNodeType -> LiteralNodeType -> Bool

max :: LiteralNodeType -> LiteralNodeType -> LiteralNodeType

min :: LiteralNodeType -> LiteralNodeType -> LiteralNodeType

Show LiteralNodeType

Methods

showsPrec :: Int -> LiteralNodeType -> ShowS

show :: LiteralNodeType -> String

showList :: [LiteralNodeType] -> ShowS

NFData LiteralNodeType

Methods

rnf :: LiteralNodeType -> ()

data Node

Haskell representation of RedlandNode.

Constructors

BlankNode String

LiteralNode String (Maybe LiteralNodeType)

ResourceNode String

Instances

Eq Node

Methods

(==) :: Node -> Node -> Bool

(/=) :: Node -> Node -> Bool

Ord Node

Methods

compare :: Node -> Node -> Ordering

(<) :: Node -> Node -> Bool

(<=) :: Node -> Node -> Bool

(>) :: Node -> Node -> Bool

(>=) :: Node -> Node -> Bool

max :: Node -> Node -> Node

min :: Node -> Node -> Node

Show Node

Methods

showsPrec :: Int -> Node -> ShowS

show :: Node -> String

showList :: [Node] -> ShowS

NFData Node

Methods

rnf :: Node -> ()

redlandNodeToNode :: ForeignPtr RedlandNode -> IO Node

A conversion function.

nodeToRedlandNode :: ForeignPtr RedlandWorld -> Node -> Initializer RedlandNode

A conversion function.

Parsers

guessingParseStringIntoModel

Arguments

:: ForeignPtr RedlandWorld

-> ForeignPtr RedlandModel

-> ForeignPtr RedlandURI

base URI

-> String

string to parse

-> IO ()

Guesses a parser name, and applies it.

Querying

withQuery

Arguments

:: ForeignPtr RedlandWorld

-> ForeignPtr RedlandModel

-> String

query language

-> String

query string

-> Maybe (ForeignPtr RedlandURI)

base URI

-> (QueryResults -> IO a)

-> IO a

Querying helper.

Query results

type QueryResults = [[(String, Node)]]

queryResultsToList :: ForeignPtr RedlandQueryResults -> IO QueryResults

A conversion function.

RDF Triple (librdf_statement)

data Triple

Haskell representation of RedlandStatement.

Constructors

Triple

Fields

• subject :: Maybe Node
• predicate :: Maybe Node
• object :: Maybe Node

Instances

Eq Triple

Methods

(==) :: Triple -> Triple -> Bool

(/=) :: Triple -> Triple -> Bool

Ord Triple

Methods

compare :: Triple -> Triple -> Ordering

(<) :: Triple -> Triple -> Bool

(<=) :: Triple -> Triple -> Bool

(>) :: Triple -> Triple -> Bool

(>=) :: Triple -> Triple -> Bool

max :: Triple -> Triple -> Triple

min :: Triple -> Triple -> Triple

Show Triple

Methods

showsPrec :: Int -> Triple -> ShowS

show :: Triple -> String

showList :: [Triple] -> ShowS

NFData Triple

Methods

rnf :: Triple -> ()

statementToTriple :: ForeignPtr RedlandStatement -> IO Triple

A conversion function.

tripleToStatement :: ForeignPtr RedlandWorld -> Triple -> Initializer RedlandStatement

A conversion function.

Stream of triples (librdf_statement)

streamToList :: ForeignPtr RedlandStream -> IO [Triple]

A conversion function.

Other

withWSMU

Arguments

:: String

storage factory

-> [(String, String)]

storage options

-> String

storage identifier

-> String

model options

-> String

base URI

-> (ForeignPtr RedlandWorld -> ForeignPtr RedlandStorage -> ForeignPtr RedlandModel -> ForeignPtr RedlandURI -> IO a)

-> IO a

Initializes world, storage, model, and base URI at once.