mirror of
https://github.com/sqlalchemy/sqlalchemy.git
synced 2026-05-27 11:01:44 -04:00
Mike Bayer
20cdc64588
become an externally usable package but still remains within the main sqlalchemy parent package. in this system, we use kind of an ugly hack to get the noseplugin imported outside of the "sqlalchemy" package, while still making it available within sqlalchemy for usage by third party libraries.
95 lines
2.6 KiB
Python
95 lines
2.6 KiB
Python
import time, resource
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from sqlalchemy import *
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from sqlalchemy.orm import *
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from sqlalchemy.testing import *
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from sqlalchemy.testing.util import gc_collect
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NUM = 100
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metadata = MetaData(testing.db)
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Person_table = Table('Person', metadata,
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Column('id', Integer, primary_key=True),
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Column('name', String(40)),
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Column('sex', Integer),
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Column('age', Integer))
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Email_table = Table('Email', metadata,
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Column('id', Integer, primary_key=True),
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Column('person_id', Integer, ForeignKey('Person.id')),
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Column('address', String(300)))
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class Person(object):
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pass
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class Email(object):
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def __repr__(self):
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return '<email %s %s>' % (getattr(self, 'id', None),
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getattr(self, 'address', None))
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mapper(Person, Person_table, properties={
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'emails': relationship(Email, backref='owner', lazy='joined')
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})
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mapper(Email, Email_table)
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compile_mappers()
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def setup():
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metadata.create_all()
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i = Person_table.insert()
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data = [{'name':'John Doe','sex':1,'age':35}] * NUM
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i.execute(data)
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i = Email_table.insert()
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for j in xrange(1, NUM + 1):
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i.execute(address='foo@bar', person_id=j)
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if j % 2:
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i.execute(address='baz@quux', person_id=j)
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print "Inserted %d rows." % (NUM + NUM + (NUM // 2))
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def orm_select(session):
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return session.query(Person).all()
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@profiling.profiled('update_and_flush')
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def update_and_flush(session, people):
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for p in people:
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p.name = 'Exene Cervenka'
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p.sex = 2
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p.emails[0].address = 'hoho@lala'
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session.flush()
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def all():
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setup()
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try:
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t, t2 = 0, 0
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def usage(label):
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now = resource.getrusage(resource.RUSAGE_SELF)
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print "%s: %0.3fs real, %0.3fs user, %0.3fs sys" % (
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label, t2 - t,
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now.ru_utime - usage.last.ru_utime,
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now.ru_stime - usage.last.ru_stime)
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usage.snap(now)
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usage.snap = lambda stats=None: setattr(
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usage, 'last', stats or resource.getrusage(resource.RUSAGE_SELF))
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session = create_session()
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gc_collect()
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usage.snap()
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t = time.clock()
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people = orm_select(session)
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t2 = time.clock()
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usage('load objects')
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gc_collect()
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usage.snap()
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t = time.clock()
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update_and_flush(session, people)
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t2 = time.clock()
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usage('update and flush')
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finally:
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metadata.drop_all()
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if __name__ == '__main__':
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all()
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