[server] extract "no pooler" CnxSet class to a _BaseCnxSet class
So we get rid of "if self._queue is None" in each method of _CnxSetPool
Also add helper get_cnxset(source, size) to instantiate the correct pooler class.
from yams.constraints import UniqueConstraint
for rschema in schema.relations():
if rschema.rule or not rschema.final:
continue
for rdef in rschema.rdefs.values():
if (rdef.object != 'String'
and any(isinstance(cstr, UniqueConstraint) for cstr in rdef.constraints)):
table = 'cw_{0}'.format(rdef.subject)
column = 'cw_{0}'.format(rdef.rtype)
repo.system_source.create_index(cnx, table, column, unique=True)