There's a bug in makeTriples when you have two or more tables in a query. Since the $class is used to both create the rdf:type and in the namespace of the table, setting it to NULL for secondary tables has an undesired side effect.
If you have this configuration:
$triplify['queries']=array(
'pam'=>array(
"SELECT * FROM pam",
"SELECT id, id_category...
2009-10-09 13:20:46 UTC in Triplify