implemented tree function

git-svn-id: http://galileo.dmi.unict.it/svn/relational/trunk@131 014f5005-505e-4b48-8d0a-63407b615a7c
2009-04-28 18:42:40 +00:00 · 2009-04-28 18:42:40 +00:00 · 1060e9d275
commit 1060e9d275
parent 92b5e55a75
1 changed files with 1 additions and 1 deletions
--- a/relational/optimizer.py
+++ b/relational/optimizer.py
@ -166,7 +166,7 @@ def tree(expression):
    '''This function parses a relational algebra expression into a tree and returns
    the root node using the Node class defined in this module.'''
    #isinstance(k,list)
-    pass
+    return node(tokenize(expression))

 if __name__=="__main__":