<https://lh5.googleusercontent.com/-kybjcR5IeLg/USI_PoFwEYI/AAAAAAAAAAM/qjEgUJHNrJA/s1600/tablas4.png>
Thanks a ton, Jose, I did a much more modest attempt at the same thing:
print 'digraph Bloques{\n' \
'ranksep="2"\n' \
'splines="true"\n'
for table in db:
for field in table:
if field.type.startswith('reference'):
t = '%s -> %s'%(table, field.type[10:])
type = field.type[10:]
elif field.type.startswith('list:reference'):
t = '%s -> %s [arrowhead="veevee" ]'%(table, field.type[15:])
else: continue
if field.name!=type:
t += '[ label = "%s" ]'%field.name
print t
print '}'
This generates a diagram with only the references between the tables,
labeling the arrows if the field name is different from the target table.
Calling
dot -Tpng db.dot -o db_picture.png
gives a file like in the example above.
BTW; have you considered using canviz?:
http://code.google.com/p/canviz/
I'm not sure it does what Massimo wants, because it might need the
coordinates of the points, that are obtained with a call to 'dot'.
Regards
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