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removed todo... because i did

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git-svn-id: http://galileo.dmi.unict.it/svn/relational/trunk@173 014f5005-505e-4b48-8d0a-63407b615a7c
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LtWorf 2009-05-13 14:34:35 +00:00
parent 1cffcffdbc
commit 328d0f6bce
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relational/optimizations.py
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@ -212,7 +212,6 @@ def swap_rename_select(n):
'''This function locates things like σ k(ρ j(R)) and replaces '''This function locates things like σ k(ρ j(R)) and replaces
them with ρ j(σ k(R)). Renaming the attributes used in the them with ρ j(σ k(R)). Renaming the attributes used in the
selection, so the operation is still valid.''' selection, so the operation is still valid.'''
#TODO document into the wiki
changes=0 changes=0
if n.name=='σ' and n.child.name=='ρ': if n.name=='σ' and n.child.name=='ρ':
@ -256,8 +255,6 @@ def selection_and_product(n,rels):
'''This function locates things like σ k (R*Q) and converts them into '''This function locates things like σ k (R*Q) and converts them into
σ l (σ j (R) * σ i (Q)). Where j contains only attributes belonging to R, σ l (σ j (R) * σ i (Q)). Where j contains only attributes belonging to R,
i contains attributes belonging to Q and l contains attributes belonging to both''' i contains attributes belonging to Q and l contains attributes belonging to both'''
#TODO document in the wiki
changes=0 changes=0
if n.name=='σ' and n.child.name in ('*','ᐅᐊ','ᐅLEFTᐊ','ᐅRIGHTᐊ','ᐅFULLᐊ'): if n.name=='σ' and n.child.name in ('*','ᐅᐊ','ᐅLEFTᐊ','ᐅRIGHTᐊ','ᐅFULLᐊ'):