def merge(self, other):
"""
Merges two PathQueryTest
"""
new_q = PathQueryTest(0)
new_content = {**self.content, **other.content}
new_q.top_sort = self.top_sort + other.top_sort
ConjunctiveQuery.__init__(new_q, new_content)
return new_q
def __init__(self, n, rel_base="E_", var_base="X_"):
content = {}
self.n = n
for i in range(1, n + 1):
x = AtomValue(var_base + str(i - 1), True)
y = AtomValue(var_base + str(i), True)
fd = FunctionalDependencySet()
fd.add(FunctionalDependency(frozenset([x]), y))
atom = Atom(rel_base + str(i), [x, y])
content[atom] = (fd, [True, False], False)
self.top_sort = [rel_base + str(i) for i in range(1, self.n + 1)]
ConjunctiveQuery.__init__(self, content)