Added GAE tasks that are related to updating GHOP Tasks.
Several TODO's have been added. Also note that some functionality that is being used here is under construction and is being integrated asap. That's the price to pay for cleaner integration commits I guess :).
Reviewed by: Lennard de Rijk
from django.db.backends.postgresql.introspection import DatabaseIntrospection as PostgresDatabaseIntrospection
class DatabaseIntrospection(PostgresDatabaseIntrospection):
def get_relations(self, cursor, table_name):
"""
Returns a dictionary of {field_index: (field_index_other_table, other_table)}
representing all relationships to the given table. Indexes are 0-based.
"""
cursor.execute("""
SELECT con.conkey, con.confkey, c2.relname
FROM pg_constraint con, pg_class c1, pg_class c2
WHERE c1.oid = con.conrelid
AND c2.oid = con.confrelid
AND c1.relname = %s
AND con.contype = 'f'""", [table_name])
relations = {}
for row in cursor.fetchall():
# row[0] and row[1] are single-item lists, so grab the single item.
relations[row[0][0] - 1] = (row[1][0] - 1, row[2])
return relations