"""

this is a proposal for a ConjunctiveGraph method in rdflib

"""

import sys

if sys.path[0] == '/usr/lib/python2.7/dist-packages':

    # nosetests puts this in

    sys.path = sys.path[1:]

import unittest

def patchQuads(graph, deleteQuads, addQuads, perfect=False):

    """

    Delete the sequence of given quads. Then add the given quads just

    like addN would. If perfect is True, we'll error before the

    deletes or before the adds (not a real transaction) if any of the

    deletes isn't in the graph or if any of the adds was already in

    the graph.

    These input quads use URIRef for the context, but

    Graph(identifier=) is also allowed (which is what you'll get

    sometimes from rdflib APIs).

    g = ConjunctiveGraph()

    #g.addN(q) # no effect on nquad output

    for s,p,o,c in q:

        #g.get_context(c).add((s,p,o)) # kind of works with broken rdflib nquad serializer code; you need this for json_ld serialize to work :(

        g.store.add((s,p,o), c) # no effect on nquad output

    return g

def graphFromNQuad(text):

    g1 = ConjunctiveGraph()

    g1.parse(data=text, format='nquads')

    return g1

def serializeQuad(g):

    out = []

    for s,p,o,c in g.quads((None,None,None)):

        if isinstance(c, Graph):

            # still not sure why this is Graph sometimes,

            # already URIRef other times

            c = c.identifier

        if '[' in c.n3():

            import ipdb;ipdb.set_trace()

        out.append(u"%s %s %s %s .\n" % (s.n3(),

                                     p.n3(),

                                     c.n3()))

    return ''.join(out)

def inContext(graph, newContext):

    """

    make a ConjunctiveGraph where all the triples in the given graph

    (or collection) are now in newContext (a uri)

    """

    return graphFromQuads((s,p,o,newContext) for s,p,o in graph)

def contextsForStatement(graph, triple):

    return [q[3] for q in graph.quads(triple)]

Twisted==17.1.0

webcolors==1.7

Louie==1.1

cyclone==1.1

web.py==0.38

restkit==4.2.2

ipython==5.3.0

nose==1.3.7

nose-watcher==0.1.3

watchdog==0.8.3

freezegun==0.3.8