def includePhysicalOperatorsUnionBlock(query, ub, a, wc, buffersize, c):
r = []
#print "ub.triples", ub.triples
for jb in ub.triples:
r.append(includePhysicalOperatorsJoinBlock(query, jb,
a, wc, buffersize, c))
while len(r) > 1:
left = r.pop(0)
right = r.pop(0)
all_variables = left.vars | right.vars
if a:
n = TreePlan(Xunion(left.vars, right.vars),
all_variables, left, right)
else:
n = TreePlan(Union(left.vars, right.vars, query.distinct),
all_variables, left, right)
r.append(n)
if len(r) == 1:
n = r[0]
for f in ub.filters:
n = TreePlan(Xfilter(f),n.vars,n)
return n
else:
return None
def includePhysicalOperatorsUnionBlock(simulated, query, ub, a, wc,
buffersize):
r = []
for jb in ub.triples:
r.append(
includePhysicalOperatorsJoinBlock(simulated, query, jb, a, wc,
buffersize))
while len(r) > 1:
left = r.pop(0)
right = r.pop(0)
all_variables = left.vars | right.vars
if a:
n = TreePlan(Xunion(left.vars, right.vars, query.distinct),
all_variables, left, right)
else:
n = TreePlan(Union(left.vars, right.vars, query.distinct),
all_variables, left, right)
r.append(n)
if len(r) == 1:
return r[0]
else:
return None