def get_codings(self):
"""Return a sequence of codings with pre-fetched values"""
# late import to prevent cycles
from amcat.models.coding.coding import CodingValue
q = CodingValue.objects.filter(coding__codingjob__exact=self)
q = q.select_related("field__fieldtype", "value__strval", "value__intval", "coding")
q = q.order_by("coding", 'field__fieldnr')
# possible optimzation: use running values list because of sort order
values_per_coding = {} # coding : [(field, value), ...]
for val in q:
values_per_coding.setdefault(val.coding, []).append((val.field, val.value))
for coding, values in values_per_coding.iteritems():
set_cache(coding, coding.get_values.__name__, values)
yield coding
def test_set_cache(self):
"""Can we manually set the cache?"""
t = TestCaching.TestClass(x=4, y=1)
# Are set values used?
set_cache(t, "xprop", 99)
self.assertEqual(t.xprop, 99)
self.assertFalse(t.changed)
# Does reset bring back real value?
reset(t)
self.assertEqual(t.xprop, 4)
self.assertTrue(t.changed)
# Same for named prop
t.changed = False
set_cache(t, t.get_y.__name__, 7, "y_cache")
self.assertEqual(t.get_y(), 7)
self.assertFalse(t.changed)
reset(t, "y_cache")
self.assertEqual(t.get_y(), 1)
self.assertTrue(t.changed)
def test_set_cache(self):
"""Can we manually set the cache?"""
t = TestCaching.TestClass(x=4, y=1)
# Are set values used?
set_cache(t, "xprop", 99)
self.assertEqual(t.xprop, 99)
self.assertFalse(t.changed)
# Does reset bring back real value?
reset(t)
self.assertEqual(t.xprop, 4)
self.assertTrue(t.changed)
# Same for named prop
t.changed = False
set_cache(t, t.get_y.__name__, 7, "y_cache")
self.assertEqual(t.get_y(), 7)
self.assertFalse(t.changed)
reset(t, "y_cache")
self.assertEqual(t.get_y(), 1)
self.assertTrue(t.changed)