#################### Session Usage ###############
# What is all this l_session madness? See:
# http://www.sqlalchemy.org/docs/orm/session.html#lifespan-of-a-contextual-session
# "This has the effect such that each web request starts fresh with
# a brand new session, and is the most definitive approach to closing
# out a request."
#################### Model #######################
# In elixir, the session (DB connection) is a property of the model..
# There can only be one for all of the listeners below that use it
# See http://elixir.ematia.de/trac/wiki/Recipes/MultipleDatabases
OP=None
tc_metadata = MetaData()
tc_metadata.echo=True
tc_session = scoped_session(sessionmaker(autoflush=True))
def setup_db(db_uri, echo=False, drop=False):
tc_engine = create_engine(db_uri, echo=echo)
tc_metadata.bind = tc_engine
tc_metadata.echo = echo
setup_all()
if drop: drop_all()
create_all()
if sqlalchemy.__version__ < "0.5.0":
# DIAF SQLAlchemy. A token gesture at backwards compatibility
# wouldn't kill you, you know.
tc_session.add = tc_session.save_or_update
from elixir import *
# Nodes with a ratio below this value will be removed from consideration
# for higher-valued nodes
MIN_RATIO=0.5
NO_FPE=2**-50
#################### Model #######################
# In elixir, the session (DB connection) is a property of the model..
# There can only be one for all of the listeners below that use it
# See http://elixir.ematia.de/trac/wiki/Recipes/MultipleDatabases
OP=None
tc_metadata = MetaData()
tc_metadata.echo=True
tc_session = scoped_session(sessionmaker(autoflush=True))
def setup_db(db_uri, echo=False, drop=False):
tc_engine = create_engine(db_uri, echo=echo)
tc_metadata.bind = tc_engine
tc_metadata.echo = echo
setup_all()
if drop: drop_all()
create_all()
if sqlalchemy.__version__ < "0.5.0":
# DIAF SQLAlchemy. A token gesture at backwards compatibility
# wouldn't kill you, you know.
tc_session.add = tc_session.save_or_update
