def test_dereference(self):
self.assertRaises(
XigtLookupError, ref.dereference, self.xc1, 'alignment'
)
self.assertRaises(
XigtLookupError, ref.dereference, self.xc1[0], 'alignment'
)
self.assertRaises(
KeyError, ref.dereference, self.xc1[0]['p'], 'alignment'
)
self.assertEqual(
ref.dereference(self.xc2[0]['t'], 'alignment').id, 'p'
)
self.assertEqual(
ref.dereference(self.xc3[0]['g'], 'alignment').id, 'm'
)
self.assertEqual(
ref.dereference(self.xc3[0]['m'], 'segmentation').id, 'w'
)
self.assertEqual(
ref.dereference(self.xc3[0]['m']['m1'], 'segmentation').id,
'w1'
)
self.assertEqual(
ref.dereference(self.xc3[0]['x']['x4'], 'children').id,
'x1'
)
def ancestors(obj, refattrs=(ALIGNMENT, SEGMENTATION)):
"""
>>> for anc in query.ancestors(igt.get_item('g1'), refattrs=(ALIGNMENT, SEGMENTATION)):
... print(anc)
(<Tier object (id: g type: glosses) at ...>, 'alignment', <Tier object (id: m type: morphemes) at ...>, [<Item object (id: m1) at ...>])
(<Tier object (id: m type: morphemes) at ...>, 'segmentation', <Tier object (id: w type: words) at ...>, [<Item object (id: w1) at ...>])
(<Tier object (id: w type: words) at ...>, 'segmentation', <Tier object (id: p type: phrases) at ...>, [<Item object (id: p1) at ...>])
"""
if hasattr(obj, 'tier'):
tier = obj.tier
items = [obj]
else:
tier = obj
items = tier.items
# a tier may be visited twice (e.g. A > B > A), but then it stops;
# this is to avoid cycles
visited = set([tier.id])
while True:
# get the first specified attribute
refattr = next((ra for ra in refattrs if ra in tier.attributes), None)
if not refattr:
break
reftier = ref.dereference(tier, refattr)
ids = set(chain.from_iterable(
ref.ids(item.attributes.get(refattr, '')) for item in items
))
refitems = [item for item in reftier.items if item.id in ids]
yield (tier, refattr, reftier, refitems)
# cycle detection; break if we've now encountered something twice
if reftier.id in visited:
break
visited.update(reftier.id)
tier = reftier
items = refitems
def ancestors(obj, refattrs=(ALIGNMENT, SEGMENTATION)):
"""
>>> for anc in query.ancestors(igt.get_item('g1'), refattrs=(ALIGNMENT, SEGMENTATION)):
... print(anc)
(<Tier object (id: g type: glosses) at ...>, 'alignment', <Tier object (id: m type: morphemes) at ...>, [<Item object (id: m1) at ...>])
(<Tier object (id: m type: morphemes) at ...>, 'segmentation', <Tier object (id: w type: words) at ...>, [<Item object (id: w1) at ...>])
(<Tier object (id: w type: words) at ...>, 'segmentation', <Tier object (id: p type: phrases) at ...>, [<Item object (id: p1) at ...>])
"""
if hasattr(obj, 'tier'):
tier = obj.tier
items = [obj]
else:
tier = obj
items = tier.items
while True:
# get the first specified attribute
refattr = next((ra for ra in refattrs if ra in tier.attributes), None)
if not refattr:
break
reftier = ref.dereference(tier, refattr)
ids = set(
chain.from_iterable(
ref.ids(item.attributes.get(refattr, '')) for item in items))
refitems = [item for item in reftier.items if item.id in ids]
yield (tier, refattr, reftier, refitems)
tier = reftier
items = refitems
def test_dereference(self):
with pytest.raises(XigtLookupError): ref.dereference(self.xc1, 'alignment')
with pytest.raises(XigtLookupError): ref.dereference(self.xc1[0], 'alignment')
with pytest.raises(KeyError): ref.dereference(self.xc1[0]['p'], 'alignment')
assert ref.dereference(self.xc2[0]['t'], 'alignment').id == 'p'
assert ref.dereference(self.xc3[0]['g'], 'alignment').id == 'm'
assert ref.dereference(self.xc3[0]['m'], 'segmentation').id == 'w'
assert ref.dereference(self.xc3[0]['m']['m1'], 'segmentation').id == 'w1'
assert ref.dereference(self.xc3[0]['x']['x4'], 'children').id == 'x1'