# -*- coding: utf-8 -*-
#
# Copyright IRI (c) 2013
#
# contact@iri.centrepompidou.fr
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# This software is governed by the CeCILL-B license under French law and
# abiding by the rules of distribution of free software.  You can  use, 
# modify and/ or redistribute the software under the terms of the CeCILL-B
# license as circulated by CEA, CNRS and INRIA at the following URL
# "http://www.cecill.info". 
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from rdflib.graph import Graph
from rdflib.namespace import Namespace, RDF, RDFS


DCT = Namespace("http://purl.org/dc/terms/")
IIEP = Namespace("http://www.iiep.unesco.org/plan4learning/model.owl#")
UNESCO = Namespace("http://www.iiep.unesco.org/Ontology/")

GRAPH_NAMESPACES = {
    'iiep': IIEP,
    'dct': DCT,
    'rdf': RDF,
    'rdfs': RDFS
}

def get_empty_graph():
    record_graph = Graph()
    for prefix,uri in GRAPH_NAMESPACES.items():
        record_graph.bind(prefix,uri)
    return record_graph