def evalGraph(ctx, part):
if ctx.dataset is None:
raise Exception("Non-conjunctive-graph doesn't know about " +
"graphs. Try a query without GRAPH.")
ctx = ctx.clone()
graph = ctx[part.term]
if graph is None:
for graph in ctx.dataset.contexts():
# in SPARQL the default graph is NOT a named graph
if graph == ctx.dataset.default_context:
continue
c = ctx.pushGraph(graph)
c = c.push()
graphSolution = [{part.term: graph.identifier}]
for x in _join(evalPart(c, part.p), graphSolution):
yield x
else:
c = ctx.pushGraph(ctx.dataset.get_context(graph))
for x in evalPart(c, part.p):
yield x
def evalGraph(ctx, part):
if ctx.dataset is None:
raise Exception(
"Non-conjunctive-graph doesn't know about " +
"graphs. Try a query without GRAPH.")
ctx = ctx.clone()
graph = ctx[part.term]
if graph is None:
for graph in ctx.dataset.contexts():
# in SPARQL the default graph is NOT a named graph
if graph == ctx.dataset.default_context:
continue
c = ctx.pushGraph(graph)
c = c.push()
graphSolution = [{part.term: graph.identifier}]
for x in _join(evalPart(c, part.p), graphSolution):
yield x
else:
c = ctx.pushGraph(ctx.dataset.get_context(graph))
for x in evalPart(c, part.p):
yield x
def evalDeleteWhere(ctx, u):
"""
http://www.w3.org/TR/sparql11-update/#deleteWhere
"""
res = {}
res["type_"] = "DELETEWHERE"
res["delta"] = {}
_res = evalBGP(ctx, u.triples)
for g in u.quads:
cg = ctx.dataset.get_context(g)
c = ctx.pushGraph(cg)
_res = _join(_res, list(evalBGP(c, u.quads[g])))
for c in _res:
g = ctx.graph
filled, filled_delta = tee(_fillTemplate(u.triples, c))
_append(res["delta"], 'default', 'removals', list(filled_delta))
g -= filled
for g in u.quads:
cg = ctx.dataset.get_context(c.get(g))
filledq, filledq_delta = tee(_fillTemplate(u.quads[g], c))
_append(res["delta"], cg.identifier, 'removals', list(filledq_delta))
cg -= filledq
return res
def evalDeleteWhere(ctx, u):
"""
http://www.w3.org/TR/sparql11-update/#deleteWhere
"""
res = {}
res["type"] = "DELETEWHERE"
res["delta"] = {}
_res = evalBGP(ctx, u.triples)
for g in u.quads:
cg = ctx.dataset.get_context(g)
c = ctx.pushGraph(cg)
_res = _join(_res, list(evalBGP(c, u.quads[g])))
for c in _res:
g = ctx.graph
filled, filled_delta = tee(_fillTemplate(u.triples, c))
_append(res["delta"], 'default', 'removals', list(filled_delta))
g -= filled
for g in u.quads:
cg = ctx.dataset.get_context(c.get(g))
filledq, filledq_delta = tee(_fillTemplate(u.quads[g], c))
_append(res["delta"], cg.identifier, 'removals', list(filledq_delta))
cg -= filledq
return res
def evalJoin(ctx, join):
# TODO: Deal with dict returned from evalPart from GROUP BY
# only ever for join.p1
if join.lazy:
return evalLazyJoin(ctx, join)
else:
a = evalPart(ctx, join.p1)
b = set(evalPart(ctx, join.p2))
return _join(a, b)
def evalJoin(ctx, join):
# TODO: Deal with dict returned from evalPart from GROUP BY
# only ever for join.p1
if join.lazy:
return evalLazyJoin(ctx, join)
else:
a = evalPart(ctx, join.p1)
b = set(evalPart(ctx, join.p2))
return _join(a, b)
def evalJoin(ctx, join):
# TODO: Deal with dict returned from evalPart from GROUP BY
# only ever for join.p1
# print 'evaluating join {}'.format(join)
if join.lazy:
return evalLazyJoin(ctx, join)
else:
a = evalPart(ctx, join.p1)
b = set(evalPart(ctx, join.p2))
return _join(a, b)
def evalDeleteWhere(ctx, u):
"""
http://www.w3.org/TR/sparql11-update/#deleteWhere
"""
res = evalBGP(ctx, u.triples)
for g in u.quads:
cg = ctx.dataset.get_context(g)
c = ctx.pushGraph(cg)
res = _join(res, list(evalBGP(c, u.quads[g])))
for c in res:
g = ctx.graph
g -= _fillTemplate(u.triples, c)
for g in u.quads:
cg = ctx.dataset.get_context(c.get(g))
cg -= _fillTemplate(u.quads[g], c)
def evalDeleteWhere(ctx, u):
"""
http://www.w3.org/TR/sparql11-update/#deleteWhere
"""
res = evalBGP(ctx, u.triples)
for g in u.quads:
cg = ctx.dataset.get_context(g)
c = ctx.pushGraph(cg)
res = _join(res, list(evalBGP(c, u.quads[g])))
for c in res:
g = ctx.graph
g -= _fillTemplate(u.triples, c)
for g in u.quads:
cg = ctx.dataset.get_context(c.get(g))
cg -= _fillTemplate(u.quads[g], c)
