- Clearer and better code for handling relation comparisons
git-svn-id: http://galileo.dmi.unict.it/svn/relational/trunk@252 014f5005-505e-4b48-8d0a-63407b615a7c
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@ -2,6 +2,7 @@
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- Removed encoding from .desktop file (was deprecated)
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- Added manpage for relational-cli
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- Internally uses set instead of lists to describe relation's content
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- Tuples are internally mapped on tuples and no longer on lists
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- Discards the old and not so functional tlb format
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- Rename will mark the resulting relation as readonly and subsequent updates, insert or deletes will actually copy the content
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@ -381,16 +381,13 @@ class relation (object):
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def __eq__(self,other):
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'''Returns true if the relations are the same, ignoring order of items.
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This operation is rather heavy, since it requires sorting and comparing.'''
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other=self._rearrange_(other) #Rearranges attributes' order so can compare tuples directly
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if (self.__class__!=other.__class__)or(self.header!=other.header):
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return False #Both parameters must be a relation
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if set(self.header.attributes)!=set(other.header.attributes):
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return False
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#Comparing header
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if len(self.header.attributes) != len(other.header.attributes):
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return False #Not the same number of attributes -> not equals
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for i in self.header.attributes:
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if i not in other.header.attributes:
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return False #Non shared attribute
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other=self._rearrange_(other) #Rearranges attributes' order so can compare tuples directly
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#comparing content
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return self.content==other.content
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