hsparql-0.4.0: A SPARQL query generator and DSL, and a client to query a SPARQL server.

Safe Haskell	None
Language	Haskell2010

Database.HSparql.Connection

Contents

submit queries using HSparql DSL
submit queries using raw SPARQL strings
parse query results

Synopsis

type EndPoint = String
data BindingValue
- = Bound Node
- | Unbound
selectQuery :: EndPoint -> Query SelectQuery -> IO (Maybe [[BindingValue]])
constructQuery :: Rdf a => EndPoint -> Query ConstructQuery -> IO (RDF a)
askQuery :: EndPoint -> Query AskQuery -> IO Bool
updateQuery :: EndPoint -> Query UpdateQuery -> IO Bool
describeQuery :: Rdf a => EndPoint -> Query DescribeQuery -> IO (RDF a)
selectQueryRaw :: EndPoint -> String -> IO (Maybe [[BindingValue]])
constructQueryRaw :: Rdf a => EndPoint -> String -> IO (RDF a)
askQueryRaw :: EndPoint -> String -> IO Bool
updateQueryRaw :: EndPoint -> String -> IO Bool
describeQueryRaw :: Rdf a => EndPoint -> String -> IO (RDF a)
structureContent :: XmlSource a => a -> Maybe [[BindingValue]]

Documentation

type EndPoint = String Source #

URI of the SPARQL endpoint.

data BindingValue Source #

Local representations of incoming XML results.

Constructors

Bound Node	RDF Node (UNode, BNode, LNode)
Unbound	Unbound result value

Instances

Instances details

Show BindingValue Source #
Instance details Defined in Database.HSparql.Connection Methods showsPrec :: Int -> BindingValue -> ShowS # show :: BindingValue -> String # showList :: [BindingValue] -> ShowS #
Eq BindingValue Source #
Instance details Defined in Database.HSparql.Connection Methods (==) :: BindingValue -> BindingValue -> Bool # (/=) :: BindingValue -> BindingValue -> Bool #

submit queries using HSparql DSL

selectQuery :: EndPoint -> Query SelectQuery -> IO (Maybe [[BindingValue]]) Source #

Connect to remote EndPoint and find all possible bindings for the Variables in the 'SelectQueryRaw action.

constructQuery :: Rdf a => EndPoint -> Query ConstructQuery -> IO (RDF a) Source #

Connect to remote EndPoint and construct TriplesGraph from given 'ConstructQueryRaw action. Provisional implementation.

askQuery :: EndPoint -> Query AskQuery -> IO Bool Source #

Connect to remote EndPoint and find all possible bindings for the Variables in the 'SelectQueryRaw action.

updateQuery :: EndPoint -> Query UpdateQuery -> IO Bool Source #

Connect to remote EndPoint and find all possible bindings for the Variables in the 'SelectQueryRaw action.

describeQuery :: Rdf a => EndPoint -> Query DescribeQuery -> IO (RDF a) Source #

Connect to remote EndPoint and construct TriplesGraph from given 'ConstructQueryRaw action. Provisional implementation.

submit queries using raw SPARQL strings

selectQueryRaw :: EndPoint -> String -> IO (Maybe [[BindingValue]]) Source #

constructQueryRaw :: Rdf a => EndPoint -> String -> IO (RDF a) Source #

askQueryRaw :: EndPoint -> String -> IO Bool Source #

updateQueryRaw :: EndPoint -> String -> IO Bool Source #

describeQueryRaw :: Rdf a => EndPoint -> String -> IO (RDF a) Source #

parse query results

structureContent :: XmlSource a => a -> Maybe [[BindingValue]] Source #

Transform the String result from the HTTP request into a two-dimensional table storing the bindings for each variable in each row.