Package SPARQL :: Module Results :: Class SPARQLWrapper2

Class SPARQLWrapper2

Wrapper.SPARQLWrapper --+
                        |
                       SPARQLWrapper2

Subclass of Wrapper that works with a JSON return result only. The query result is automaticall set to a Results instance. Makes the standard query processing a bit simpler

Instance Methods

[hide private]

__init__(self, baseURI, defaultGraph=None)
Class encapsulating a full SPARQL call.

source code

setReturnFormat(self, format)
Set the return format.

source code

Python dictionary

convertJSON(self, queryResult)
Convert a JSON result into a Python dict and then creates a Results instance

source code

Results instance

query(self)
Execute the query.

source code

Inherited from Wrapper.SPARQLWrapper: addDefaultGraph, addExtraURITag, addNamedGraph, convert, convertRDF, convertXML, getURI, queryAndConvert, setQuery

Method Details

[hide private]

init(self, baseURI, defaultGraph=None)
(Constructor)

source code

Class encapsulating a full SPARQL call. In contrast to the SPARQL.SPARQLWrapper superclass, the return format cannot be set (it is defaulted to JSON)

Parameters:

baseURI (string) - string of the SPARQL endpoint's URI
defaultGraph (string) - URI for the default graph. Default is None, can be set via an explicit call, too

Overrides: Wrapper.SPARQLWrapper.__init__

setReturnFormat(self, format)

source code

Set the return format. This method is doing nothing; this class instance should work with JSON only!

Overrides: Wrapper.SPARQLWrapper.setReturnFormat

convertJSON(self, queryResult)

source code

Convert a JSON result into a Python dict and then creates a Results instance

Parameters:

queryResult - result of a (previous) query

Returns: Python dictionary

converted result

Overrides: Wrapper.SPARQLWrapper.convertJSON

query(self)

source code

Execute the query. Exceptions can be raised if either the URI is wrong or the HTTP sends back an error. The usual urllib2 exceptions are raised, which cover possible SPARQL errors, too

Returns: Results instance: query result
Overrides: Wrapper.SPARQLWrapper.query

Class SPARQLWrapper2

__init__(self, baseURI, defaultGraph=None) (Constructor)

setReturnFormat(self, format)

convertJSON(self, queryResult)

query(self)

init(self, baseURI, defaultGraph=None)
(Constructor)