def multiple_insert(tablename, values, seqname=None, _test=False):
# multiple inserts are supported only in version 8.2+
if get_postgres_version() < (8, 2):
result = [web.insert(tablename, seqname=seqname, **v) for v in values]
if seqname:
return result
else:
return None
if not values:
return []
keys = list(values[0])
#@@ make sure all keys are valid
# make sure all rows have same keys.
for v in values:
if list(v) != keys:
raise Exception('Bad data')
q = web.SQLQuery('INSERT INTO %s (%s) VALUES ' %
(tablename, ', '.join(keys)))
data = []
for row in values:
d = join([web.SQLQuery(web.aparam(), [row[k]]) for k in keys], ', ')
data.append('(' + d + ')')
q += join(data, ',')
if seqname is not False:
if seqname is None:
seqname = tablename + "_id_seq"
q += "; SELECT currval('%s')" % seqname
if _test:
return q
db_cursor = web.ctx.db_cursor()
web.ctx.db_execute(db_cursor, q)
try:
out = db_cursor.fetchone()[0]
out = list(range(out - len(values) + 1, out + 1))
except Exception:
out = None
if not web.ctx.db_transaction:
web.ctx.db.commit()
return out
def sqlands(left, lst):
"""Similar to webpy sqlors but for ands"""
if isinstance(lst, web.utils.iters):
lst = list(lst)
ln = len(lst)
if ln == 0:
return web.SQLQuery("1!=2")
if ln == 1:
lst = lst[0]
if isinstance(lst, web.utils.iters):
return web.SQLQuery(['('] + sum([[left, web.sqlparam(x), ' AND ']
for x in lst], []) + ['1!=2)'])
else:
return left + web.sqlparam(lst)
def join(items, sep):
q = web.SQLQuery('')
for i, item in enumerate(items):
if i:
q += sep
q += item
return q
def create(self, sitename):
if self.sitestore is None:
self.sitestore = DBSiteStore(self.db, self.schema)
if not self.has_initialized():
q = str(self.schema.sql())
self.db.query(web.SQLQuery([q]))
self.sitestore.initialize()
return self.sitestore
