- Fixed tokenize_select that was not providing level prop for the tokens anymore

git-svn-id: http://galileo.dmi.unict.it/svn/relational/trunk@257 014f5005-505e-4b48-8d0a-63407b615a7c

relational/optimizations.py

@@ -326,6 +326,17 @@ def tokenize_select(expression):
     except:
         pass
     
+    
+    level=0
+    for i in range(len(l)):
+        l[i]=level_string(l[i])
+        l[i].level=level
+        
+        if l[i]=='(':
+            level+=1
+        elif l[i]==')':
+            level-=1
+    
     return l
 
 def swap_rename_projection(n):

test/driver.py

@@ -22,6 +22,8 @@ from relational import relation, parser, optimizer
 
 import os
 
+print relation
+
 rels={}
 examples_path='samples/'
 tests_path='test/'
@@ -44,9 +46,10 @@ def load_relations():
             #Naming the relation
             relname=i[:-4]
             
-            print "Loading relation %s with name %s" % (i,relname)
+            print ("Loading relation %s with name %s..." % (i,relname)),
             
             rels[relname]=relation.relation('%s%s' % (examples_path,i))
+            print 'done'
             
 def execute_tests():
     

test/php.query

@@ -1 +1 @@
-σ age<30and skill=='PHP' (people ᐅᐊ skills)
+σ age<30 and skill=='PHP' (people ᐅᐊ skills)