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relational
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Removed a couple of un-pythonic lines

master
Salvo 'LtWorf' Tomaselli 2015-06-17 17:13:35 +07:00
parent 5218f41e7b
commit bcc7053892
1 changed files with 15 additions and 14 deletions
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29
relational/optimizations.py
Unescape Escape View File

@ -289,10 +289,7 @@ def futile_renames(n):
# Scans dictionary to locate things like "a->b,b->c" and replace them
# with "a->c"
for key in list(_vars.keys()):
try:
value = _vars[key]
except:
value = None
value = _vars.get(key)
if key == value:
_vars.pop(value) # Removes the unused one
# Reset prop var
@ -332,10 +329,7 @@ def subsequent_renames(n):
# Scans dictionary to locate things like "a->b,b->c" and replace them
# with "a->c"
for key in list(_vars.keys()):
try:
value = _vars[key]
except:
value = None
value = _vars.get(key)
if value in _vars.keys():
if _vars[value] != key:
# Double rename on attribute
@ -593,8 +587,7 @@ def selection_and_product(n, rels):
n.child.right = r_node
while len(right) > 0:
c = right.pop(0)
for i in c:
r_node.prop += i + ' '
r_node.prop += ' '.join(c)
if len(right) > 0:
r_node.prop += ' and '
if '(' in r_node.prop:
@ -604,8 +597,7 @@ def selection_and_product(n, rels):
if len(both) != 0:
while len(both) > 0:
c = both.pop(0)
for i in c:
n.prop += i + ' '
n.prop += ' '.join(c)
if len(both) > 0:
n.prop += ' and '
if '(' in n.prop:
@ -616,8 +608,17 @@ def selection_and_product(n, rels):
return changes + recoursive_scan(selection_and_product, n, rels)
general_optimizations = [
duplicated_select, down_to_unions_subtractions_intersections, duplicated_projection, selection_inside_projection,
subsequent_renames, swap_rename_select, futile_union_intersection_subtraction, swap_union_renames, swap_rename_projection, select_union_intersect_subtract]
duplicated_select,
down_to_unions_subtractions_intersections,
duplicated_projection,
selection_inside_projection,
subsequent_renames,
swap_rename_select,
futile_union_intersection_subtraction,
swap_union_renames,
swap_rename_projection,
select_union_intersect_subtract
]
specific_optimizations = [selection_and_product]
if __name__ == "__main__":