def __init__(self, api):
self.api = api
self.debug = False
+# self.debug = True
self.connection = None
def cursor(self):
cursor.close()
return self.rowcount
+ def next_id(self, table_name, primary_key):
+ sequence = "%(table_name)s_%(primary_key)s_seq" % locals()
+ sql = "SELECT nextval('%(sequence)s')" % locals()
+ rows = self.selectall(sql, hashref = False)
+ if rows:
+ return rows[0][0]
+
+ return None
+
def last_insert_id(self, table_name, primary_key):
if isinstance(self.lastrowid, int):
sql = "SELECT %s FROM %s WHERE oid = %d" % \
return None
+ # modified for psycopg2-2.0.7
+ # executemany is undefined for SELECT's
+ # see http://www.python.org/dev/peps/pep-0249/
+ # accepts either None, a single dict, a tuple of single dict - in which case it execute's
+ # or a tuple of several dicts, in which case it executemany's
def execute(self, query, params = None):
- return self.execute_array(query, (params,))
- def execute_array(self, query, param_seq):
cursor = self.cursor()
try:
- if self.debug:
- for params in param_seq:
- if params:
- print >> log, query % params
- else:
- print >> log, query
# psycopg2 requires %()s format for all parameters,
# regardless of type.
if psycopg2:
query = re.sub(r'(%\([^)]*\)|%)[df]', r'\1s', query)
- cursor.executemany(query, param_seq)
+ if not params:
+ if self.debug:
+ print >> log,'execute0',query
+ cursor.execute(query)
+ elif isinstance(params,dict):
+ if self.debug:
+ print >> log,'execute-dict: params',params,'query',query%params
+ cursor.execute(query,params)
+ elif isinstance(params,tuple) and len(params)==1:
+ if self.debug:
+ print >> log,'execute-tuple',query%params[0]
+ cursor.execute(query,params[0])
+ else:
+ param_seq=(params,)
+ if self.debug:
+ for params in param_seq:
+ print >> log,'executemany',query%params
+ cursor.executemany(query, param_seq)
(self.rowcount, self.description, self.lastrowid) = \
(cursor.rowcount, cursor.description, cursor.lastrowid)
except Exception, e:
print >> log, "Query:"
print >> log, query
print >> log, "Params:"
- print >> log, pformat(param_seq[0])
+ print >> log, pformat(params)
raise PLCDBError("Please contact " + \
self.api.config.PLC_NAME + " Support " + \
"<" + self.api.config.PLC_MAIL_SUPPORT_ADDRESS + ">" + \