CCF_100/relational
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Reuse code for optimizations

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Salvo 'LtWorf' Tomaselli 2020-06-18 17:12:57 +02:00
parent 8fd2db12b5
commit 3056dafbff
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1 changed files with 1 additions and 3 deletions
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relational/parser.py
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@ -150,7 +150,7 @@ class Node:
elif isinstance(self, Binary) and self.name == DIVISION:
return list(set(self.left.result_format(rels)) - set(self.right.result_format(rels)))
elif self.name == PROJECTION:
return [i.strip() for i in self.prop.split(',')]
return self.get_projection_prop()
elif self.name == PRODUCT:
return self.left.result_format(rels) + self.right.result_format(rels)
elif self.name == SELECTION:
@ -270,8 +270,6 @@ class Unary(Node):
self.prop = ','.join(f'{k}{ARROW}{v}' for k, v in renames.items())
def parse_tokens(expression: List[Union[list, str]]) -> Node:
'''Generates the tree from the tokenized expression
If no expression is specified then it will create an empty node'''